| the influence of high dietary protein, energy and mineral intake on deficient young camel (camelus dromedarius)--i. changes in metabolic profiles and growth performance. | 1. the main forage for camels in northern djibouti (mangrove with avicennia marina) is very poor in nitrogen and energy. in a trial, 32 young camels (less than 2 years old) were used in four groups of eight each. 2. all the camels received mangrove as basal diet ad lib. 3. after 1 month, the camels received mineral supplementation in copper and zinc (groups 1 and 3) or/and a concentrate rich in protein and energy (groups 2 and 3) or continued with the basal diet (controls). 4. any supplementatio ... | 1992 | 1354589 |
| the influence of high dietary protein, energy and mineral intake on deficient young camel (camelus dromedarius)--ii. changes in mineral status. | 1. mangrove avicennia marina is poor in some trace elements such as copper, zinc and manganese. in a trial we used 32 young camels divided into four groups. 2. groups 1 and 3 were supplemented with copper and zinc in drinking water after 1 month of mangrove feeding. 3. groups 2 and 3 received concentrate rich in protein and energy. the supplementation was stopped after 2 months. 4. all the camels were deficient in trace elements at the beginning of mineral supplementation. 5. the plasma concentr ... | 1992 | 1354590 |
| toxicological studies on the leaves of avicennia marina (mangrove) in rats. | haematological, biochemical and pathological effects in rats produced by the salt-tolerant plant avicennia marina given at oral doses of 1 or 4 g kg(-1) for three consecutive days or 0.5 g kg(-1) day(-1) for 28 consecutive days are reported. no overt behavioral changes, moribundity or mortality were seen in either of the two experiments. a dose of 1 g kg(-1) did not affect significantly either body or liver weights. however, at a dose of 4 g kg(-1) the extract reduced both body and liver weights ... | 1998 | 9570693 |
| chemical constituents of avicennia alba. isolation and structural elucidation of new naphthoquinones and their analogues. | three new naphthoquinones and their analogues, named avicequinone-a (1), -b (2), -c (3), and avicenol-a (4), -b (5), -c (6), respectively, were isolated from the stem bark of avicennia alba (avicenniaceae) collected in singapore, and their structures were elucidated by means of spectral methods. gillan and co-workers have proposed that the structures of the new phytoalexins isolated from avicennia marina are 1,2-naphthoquinones 8 and 9. our synthetic and spectrometric studies showed that these s ... | 2000 | 10726853 |
| new flavonoids from avicennia marina. | in addition to luteolin 7-o-methylether, chrysoeriol 7-o-glucoside and isorhamnetin 3-o-rutinoside, the methanol extract of the aerial parts of avicennia marina yielded two new flavonoids identified as luteolin 7-o-methylether 3'-o-beta-d-glucoside and its galactoside analogue 2. | 2000 | 10844167 |
| microsatellite analysis of genetic structure in the mangrove species avicennia marina (forsk.) vierh. (avicenniaceae). | the level of genetic variation throughout the entire worldwide range of the mangrove species avicennia marina (forsk.) vierh. was examined using microsatellite markers. three microsatellite loci detected high levels of allelic diversity (70 alleles in total), essential for an accurate estimation of population genetic parameters. the informativeness of the microsatellite loci tended to increase with increasing average number of repeats. the levels of heterozygosity detected for each population, o ... | 2000 | 11091321 |
| molecular cloning and functional characterization of two kinds of betaine-aldehyde dehydrogenase in betaine-accumulating mangrove avicennia marina (forsk.) vierh. | glycinebetaine is an important osmoprotectant in bacteria, plants, and animals, but only little information is available on the synthesis of glycinebetaine in tree plants. among four mangrove species, glycinebetaine could be detected only in avicennia marina. pinitol was the main osmoprotectant in the other three species. the level of glycinebetaine in a. marina increased under high salinity. betaine-aldehyde dehydrogenase (badh) was detected in all four species, but choline monooxygenase could ... | 2001 | 11292080 |
| roles of larval supply and behavior in determining settlement of barnacles in a temperate mangrove forest. | recruitment is often a major influence on the spatial distribution of populations of benthic marine invertebrates, but the contributions of different components of recruitment are not well known, with the added complication that the relative importance of various life-history processes may be scale-dependent. previously, we have shown that over a large scale across a mangrove (avicennia marina) forest in southeastern australia, settlement of the barnacle elminius covertus explained its patterns ... | 2001 | 11358575 |
| photosynthetic pigments and peroxidase activity as indicators of heavy metal stress in the grey mangrove, avicennia marina (forsk.) vierh. | mangroves have been observed to possess a tolerance to high levels of heavy metals, yet accumulated metals may induce subcellular biochemical changes, which can impact on processes at the organism level. six month-old seedlings of the grey mangrove, avicennia marina (forsk.) vierh, were exposed to a range of cu (0-800 micrograms/g), pb (0-800 micrograms/g) and zn (0-1000 micrograms/g) concentrations in sediments under laboratory conditions, to determine leaf tissue metal accumulation patterns, e ... | 2001 | 11381878 |
| salt secretion and stomatal behaviour in avicennia marina seedlings fumigated with the volatile fraction of light arabian crude oil. | seedlings of the salt secreting mangrove avicennia marina were exposed to fumes of the volatile fraction of light arabian crude oil (vfco) under controlled conditions. rates of salt secretion were determined in leaves fumigated for 0, 3, and 6 h under four different salinity levels (10, 20, 30, and 40 ppt). studying the effect of these fumigation periods on stomatal resistance and transpiration was restricted to one salinity level (20 ppt). opposite to salinity, increasing the fumigation period ... | 2002 | 11806449 |
| iridoids from avicennia marina. | three new iridoid glucosides, 10-o-[(e)-cinnamoyl]-geniposidic acid, 10-o-[(e)-p-coumaroyl]-geniposidic acid, 10-o-[(e)-caffeoyl]-geniposidic acid and the known iridoid glucoside, 2'-o-[(e)-cinnamoyl]-mussaenosidic acid have been isolated from avicennia marina. the structures were determined primarily by nmr spectroscopy. the assignment of nmr signals was performed by means of 1h-1h cosy, hmqc and hmbc experiments. | 2001 | 11837684 |
| functional characterization of betaine/proline transporters in betaine-accumulating mangrove. | betaine is an important osmoprotectant in many plants, but its transport activity has only been demonstrated using a proline transporter from tomato, a betaine-nonaccumulating plant. in this study, two full-length and one partial transporter genes were isolated from betaine-accumulating mangrove avicennia marina. their homologies to betaine transporters from bacteria and betaine/4-aminobutyrate transporters from mammalian cells were low but were high to proline transporters from arabidopsis and ... | 2002 | 11907031 |
| leaf biochemical parameters in avicennia marina (forsk.) vierh as potential biomarkers of heavy metal stress in estuarine ecosystems. | sediment loadings and leaf accumulation of the heavy metals copper (cu), lead (pb) and zinc (zn) with accompanying changes in leaf chlorophylls' (a + b), carotenoids and the antioxidant enzyme peroxidase were examined in the grey mangrove avicennia marina (forsk.) vierh, in order to determine the applicability of these parameters as biomarkers of heavy metal stress under field conditions. copper was found to show limited accumulation to leaf tissue, following a linear relationship at lower sedim ... | 2002 | 11954742 |
| [extraction of the salt-tolerant cdna in mangrove avicennia marina by mrna differential display]. | rnas of the leaves in avicennia marina, which cultured in 50@1000 and 0@1000 salinity condition respectively, were isolated for mrna differential display analysis. screened by oligodt12 gc and eight 10-oligonucleotide arbitrary primers, differential cdna fragments-csrg1(600 bp), csrg2(550 bp), csrg3(480 bp), only appeared in the leaves of avicennia marina cultured in 50@1000 salinity condition. after detected by rna dot hybridization, only csrg1 appeared the difference between the rnas of the le ... | 2002 | 11977600 |
| genetic variation in avicennia marina in three estuaries of sydney (australia) and implications for rehabilitation and management. | in order to ensure conservation of mangroves, genetic diversity in remaining populations must be explored. both morphological and isozyme analyses were used and compared in investigating the intra- and inter-estuarine variation in avicennia marina in sydney, the most urbanised area in australia. sediment characteristics, metal levels, tree attributes, leaf morphology and isozyme/allozyme analyses were conducted. tree characteristics did not prove to be adequate genetic markers, but leaf morpholo ... | 2002 | 12146830 |
| toxicity, growth and accumulation relationships of copper, lead and zinc in the grey mangrove avicennia marina (forsk.) vierh. | the effects of three heavy metals copper (cu), lead (pb) and zinc (zn), and the interaction of an essential (zn) and non-essential (pb) metal on germination, growth, and accumulation of metals in the grey mangrove, avicennia marina (forsk.) vierh var. australasica (walp.) moldenke, were studied under laboratory conditions. avicennia marina was found to be highly tolerant to the metals applied. copper was accumulated in root tissue in a linear relationship at lower sediment concentrations, but at ... | 2002 | 12148945 |
| screening of some indigenous qatari medicinal plants for antimicrobial activity. | aqueous, ethanol and butanol crude extracts of the aerial parts of ten plants exhibited variable degrees of antimicrobial activity against four bacterial and two fungal species. aqueous extracts had low antimicrobial activity against e.coli, p.aeruginosa, b. cerreus, s.aureus, c.albicans and a.flavus. avicennia marina (am) aqueous extract exhibited a moderate antifungal activity. ethanol and butanol crude extracts exhibited an improved antimicrobial activity. however, butanol exhibited a superio ... | 2002 | 12458480 |
| chlorophyll a fluorescence as a potential biomarker of zinc stress in the grey mangrove, avicennia marina (forsk.) vierh. | | 2003 | 12478429 |
| chlorophyll-deficient propagules of avicennia marina and apparent longer term deterioration of mangrove fitness in oil-polluted sediments. | a correlation between petroleum hydrocarbon concentrations in sediments and chlorophyll-deficient mutations in mangroves may occur also in australian mangroves. earlier reports of such mutations in the caribbean area were evident in viviparous propagules of the common mangrove genera, rhizophora, borne on otherwise normal trees. these mutant propagules were termed albinos' since they lacked chlorophyll and normal green coloration, leaving them white, yellow or red. the mutation was considered le ... | 2002 | 12523526 |
| the east african decapod crab neosarmatium meinerti (de man) sweeps mangrove floors clean of leaf litter. | leaf litter removal by the abundant mangrove decapod crab neosarmatium meinerti was studied in series of field and laboratory experiments in east africa. in the high intertidal avicennia marina zone crabs buried all leaves placed on the forest floor and consumed on average 67% of them within 2 hrs. high shore crabs in kenya buried 4 g m(-2) leaf-litter in 1 hr, i.e. approx. twice the daily litter fall. in contrast, in the low shore sonneratia alba zone, where typical leaf-eating crabs were absen ... | 2002 | 12572824 |
| comparative analysis of genetic diversity in the mangrove species avicennia marina (forsk.) vierh. (avicenniaceae) detected by aflps and ssrs. | avicennia marina is an important mangrove species with a wide geographical and climatic distribution which suggests that large amounts of genetic diversity are available for conservation and breeding programs. in this study we compare the informativeness of aflps and ssrs for assessing genetic diversity within and among individuals, populations and subspecies of a. marina in australia. our comparison utilized three ssr loci and three aflp primer sets that were known to be polymorphic, and could ... | 2002 | 12582711 |
| lipid composition of mangrove and its relevance to salt tolerance. | lipid compositions of mangrove trees were studied in relation to the salt-tolerance mechanism. leaves and roots were obtained from seven mature mangrove trees on iriomote island, okinawa: bruguiera gymnorrhiza, rhizophora stylosa, kandelia candel, lumnitzera racemosa, avicennia marina, pemphis acidula and sonneratia alba. lipids of mangrove leaves mainly consisted of 11 lipid classes: polar lipids, unknown (uk) 1-6, sterols, triacyl glycerols, wax ester and sterol ester (uk 3 and 4 were found to ... | 2003 | 12605298 |
| photosynthetic gas exchange and accumulation of phytotoxins in mangrove seedlings in response to soil physico-chemical characteristics associated with waterlogging. | we evaluated photosynthetic gas exchange and the accumulation of iron, manganese and sulfur in seedlings of five mangrove species (aegiceras corniculatum (l.) blanco, avicennia marina (forsk.) vierh., bruguiera gymnorrhiza (l.) lamk., hibiscus tiliaceus l. and rhizophora stylosa griff.) growing under anoxic soil conditions at low irradiance. seedlings of the viviparous mangroves showed no significant responses to root anoxia. the presence of ferrous sulfate or manganous sulfate had a smaller eff ... | 1998 | 12651371 |
| accumulation and distribution of heavy metals in the grey mangrove, avicennia marina (forsk)vierh: biological indication potential. | the accumulative partitioning of the heavy metals cu, pb and zn in the grey mangrove, avicennia marina, were studied under field conditions. copper and pb were accumulated in root tissue to levels higher than surrounding sediment levels. zinc was accumulated to levels reflecting sediment concentrations. strong linear relationships existed for all metals in sediments with metals in root tissue. accumulation of cu in leaf tissue followed a linear relationship at lower sediment concentrations, with ... | 2003 | 12663214 |
| a study of some biochemical and histopathological responses of wet-stored recalcitrant seeds of avicennia marina infected by fusarium moniliforme. | although fungi cause a recognized problem during storage of recalcitrant seeds of many tropical species, there are no data to date on defence strategies of these seeds against fungal attack. to ascertain whether recalcitrant seeds of avicennia marina elaborate compounds that might suppress fungal proliferation during hydrated storage, the production and efficacy of beta-1,3-glucanase (ec 3.2.1.39) and chitinase (ec 3.2.1.14) were studied in relation to histopathological changes. freshly harveste ... | 2003 | 12881405 |
| floral scent chemistry of mangrove plants. | the flowers of mangrove plants are pollinated by a variety of pollinators including birds, bats, and insects. this study analyzed the floral scent chemistry of mangroves on iriomote island (located near taiwan) including bruguiera gymnorrhiza (l.) lamk. (rhizophoraceae), kandelia candel (l.) druce (rhizophoraceae), rhizophora stylosa griff. (rhizophoraceae), sonneratia alba j. smith (sonneratiaceae), nypa fruticans (thunb.) wurmb. (palmae), lumnitzera racemosa willd. (combretaceae), avicennia ma ... | 2002 | 12884048 |
| effect of salt stress on the metabolism of ethanolamine and choline in leaves of the betaine-producing mangrove species avicennia marina. | glycinebetaine synthesis from [methyl-14c]choline and [1,2-14c]ethanolamine in leaf disks of avicennia marina, was increased by salt stress (250 and 500 mm nacl). after 18 h incubation with [methyl-14c]choline, phosphocholine and co(2) were found to be heavily labelled. phosphocholine contained 39% of the total radioactivity taken up by non-salinised (control) leaf disks and 15% of the total for salinised leaf disks stressed with 500 mm nacl. eighteen and 49% of the radioactivity absorbed by con ... | 2003 | 14561509 |
| potential use of mangrove plantation as constructed wetland for municipal wastewater treatment. | the study evaluated the possibility of using mangrove plantation to treat municipal wastewater. two types of pilot scale (100 x 150 m2) free water surface constructed wetland were set up. one system was a natural avicennia marina dominated forest system. the other system was a newly planted system in which seedlings of rhizophora spp., a. marina, bruguiera cylindrica and ceriops tagal were planted in 4 strips. municipal wastewater was retained within the systems for 7 and 3 days, respectively. t ... | 2003 | 14621172 |
| the effects of coal dust on photosynthetic performance of the mangrove, avicennia marina in richards bay, south africa. | richards bay, on the northern kwazulu-natal coast, is the largest coal exporting port in south africa. the coal is stored at the richards bay coal terminal (rbct) prior to export. dust from coal operations is a major problem in the richards bay area. in this study, we tested the hypothesis that coal dust adversely affects photosynthetic performance of avicennia marina (forssk.) vierh., the dominant mangrove species in the harbour. photosynthetic performance was determined on 10 trees by measurin ... | 2004 | 14638296 |
| genetic variation of avicennia marina (forsk.) vierh. (avicenniaceae) in vietnam revealed by microsatellite and aflp markers. | genetic variation of avicennia marina in the costal area of vietnam was examined using microsatellite and aflp markers. by using five microsatellite loci a total of 21 alleles were detected. the average number of alleles per locus per population ranged from 1.667 to 3.000. the observed heterozygosity varied from 0.180 to 0.263, with an average of 0.210 indicating relatively low level of genetic variation comparing to the previous studies on a. marina in the worldwide range. the expected heterozy ... | 2003 | 14973341 |
| sensitivity to chilling temperatures and distribution differ in the mangrove species kandelia candel and avicennia marina. | we compared the effects of short-term (hours) and long-term (days) exposure to chilling temperatures on the photosynthetic gas exchange, leaf characteristics and chlorophyll a fluorescence of seedlings of the mangrove species kandelia candel druce and avicennia marina (forsk.) vierh. both species occur along the west coast of taiwan, but k. candel occurs further north than a. marina. we hypothesized that temperature was one of the major environmental factors limiting the northern distribution of ... | 2004 | 15123458 |
| two new metabolites from the mangrove endophytic fungus no. 2524. | two new metabolites, the cyclo-(l-phe-l-leu1-l-leu2-l-leu3-l-ile) (1) and (3s,4r)-dihydroxy-(6s)-undecyl-alpha-pyranone (2) have been produced by the endophytic fungus no. 2524 isolated from a seed of mangrove avicennia marina in hong kong. the structures have been elucidated by spectra including two-dimensional nmr, esi tandem mass spectrometry and cd. these compounds show no activity toward human cancer cell lines bel-7402, nci-4460 and the normal human cell lines l-02. | 2004 | 15224415 |
| genetic variation among age-classes of the mangrove avicennia marina in clean and contaminated sediments. | an examination was made of the genetic variation with age in mangrove populations in two estuaries in south-east australia, one contaminated, the other uncontaminated. sediment nutrient and metal levels, and isozyme/allozyme complements were measured in three age-classes in four stands in each estuary, to identify site and intergenerational genetic composition, and influences of sediment contamination. within each river, there were greater genetic distances among the age-classes than among sampl ... | 2004 | 15530512 |
| changes of plasma membrane atpase activity, membrane potential and transmembrane proton gradient in kandelia candel and avicennia marina seedlings with various salinities. | the salt-secreting mangrove, avicennia marina, and non-salt-secreting mangrove, kandelia candel were cultivated in sand with various salinities(0 per thousand, 10 per thousand, 20 per thousand, 30 per thousand, 40 per thousand) for 60 d. plasma membrane vesicles of high-purity in leaves and roots of a. marina and k. candel seedlings were obtained by two-phase partitioning. the function of the plasma membranes, the activity of atpase, membrane potential and transmembrane proton gradient, at vario ... | 2004 | 15559803 |
| generation and analysis of expressed sequence tags from the salt-tolerant mangrove species avicennia marina (forsk) vierh. | salinization poses an increasingly serious problem in coastal and agricultural areas with negative effects on plant productivity and yield. avicennia marina is a pantropical mangrove species that can survive in highly saline conditions. as a first step towards the characterization of genes that contribute to combating salinity stress, the construction of a cdna library of a. marina genes is reported here. random expressed sequence tag (est) sequencing of 1,841 clones produced 1,602 quality reads ... | 2004 | 15609053 |
| effects of photosystem ii inhibiting herbicides on mangroves--preliminary toxicology trials. | mangroves are sensitive to the root application of photosystem ii inhibiting herbicides and avicennia marina is more sensitive than other mangroves tested. seedlings of four mangrove species, including two salt-excreting species (a. marina and aegiceras corniculatum) and two salt-excluding species (rhizophora stylosa and ceriops australis) were treated with a range of concentrations of the herbicides diuron, ametryn and atrazine. assessment of responses required the separation of seedlings into ... | 2004 | 15757729 |
| herbicides implicated as the cause of severe mangrove dieback in the mackay region, ne australia: consequences for marine plant habitats of the gbr world heritage area. | herbicides, particularly diuron, were correlated with severe and widespread dieback of the dominant mangrove, avicennia marina (forsk.) vierh. var. eucalyptifolia (val.) n.c. duke (avicenniaceae), its reduced canopy condition, and declines in seedling health within three neighbouring estuaries in the mackay region of ne australia. this unusual species-specific dieback, first observed in the early 1990s, had gotten notably worse by 2002 to affect >30 km(2) of mangroves in at least five adjacent e ... | 2004 | 15757730 |
| [niches of several mangrove species in dongzhai harbor of hainan island]. | employing the succession series of kandelia candel-aegiceras corniculatum community in non-indigenous species sonneratia apetala extension area as resource axes, and with three axes, commonly used calculation formulae, this paper determined the niche breadth and overlap of mangrove populations. the results showed that the niche breadth decreased in order of aegiceras corniculatum (3.8357) > kandelia candel (3.3421) > bruguiera gymnorrhiza (3.3180) > avicennia marina (3.0975) > sonneratia apetala ... | 2005 | 15943346 |
| [distribution, migration and purifying effect of cadmium in artificial avicennia marina wetland system]. | an artificial mangrove avicennia marina wetland was set up in a greenhouse, and an irrigation experiment with synthetic wastewater was performed to research the behavior of cadmium in the artificial wetland system. the synthetic wastewater c1 had the characteristics and strength similar to normal municipal sewage, while c5 and c10 had the nutrients and heavy metals as five and ten times as those in c1, respectively. the control was of 15 per thousand salinity. all the test wastewater was quantit ... | 2005 | 15943375 |
| aerenchyma tissue development and gas-pathway structure in root of avicennia marina (forsk.) vierh. | the aerenchyma differentiation in cable roots, pneumatophores, anchor roots, and feeding roots of the mangrove plant, avicennia marina (verbenaceae) was analyzed using a light microscope and scanning electron microscope. in all types, cortex cells were arranged in longitudinal columns extending from the endodermis to the epidermis. no cells in the cortex had intercellular spaces at the root tip (0-150 microm), and aerenchyma started developing at 200 microm from the root apex. the aerenchyma for ... | 2005 | 16059658 |
| bioconcentration of polycyclic aromatic hydrocarbons in roots of three mangrove species in jiulong river estuary. | the polycyclic aromatic hydrocarbons(pahs) concentrations were determined in the root of three mangrove species (kandelia candel, avicennia marina and bruguiera gymnorrhiza) and their growing environment (sediment) in mangrove wetlands of jiulong river estuary, fujian, china. the total pahs (16 parent pahs) in mangrove sediments ranged from 193.44 to 270.53 ng/g dw, with a mean value of 231.76 +/- 31.78 ng/g dw. compared with other mangrove and coastal marine sediments, the pahs concentrations o ... | 2005 | 16295907 |
| nitrogen fixation associated with the new zealand mangrove (avicennia marina (forsk.) vierh. var. resinifera (forst. f.) bakh.). | nitrogenase activity in mangrove forests at two locations in the north island, new zealand, was measured by acetylene reduction and n(2) uptake. nitrogenase activity (c(2)h(2) reduction) in surface sediments 0 to 10 mm deep was highly correlated (r = 0.91, n = 17) with the dry weight of decomposing particulate organic matter in the sediment and was independent of light. the activity was not correlated with the dry weight of roots in the top 10 mm of sediment (r = -0.01, n = 13). seasonal and sam ... | 1985 | 16346771 |
| consequences of pre-dispersal damage by insects for the dispersal and recruitment of mangroves. | herbivores may enhance plant recruitment, but such positive interactions may be overlooked in favour of obvious negative effects of herbivory on propagules. my objective was to determine whether larval insects that feed and develop within fruit of the mangrove avicennia marina act as mutualist herbivores by increasing the dispersal of propagules without affecting their viability and emerging successfully as adults following dispersal of the propagule by water. surveys revealed that frugivory is ... | 2006 | 16450178 |
| monitoring expression profiles of antioxidant genes to salinity, iron, oxidative, light and hyperosmotic stresses in the highly salt tolerant grey mangrove, avicennia marina (forsk.) vierh. by mrna analysis. | plant photosynthesis results in the production of molecular oxygen. an inevitable consequence of this normal process is the production of reactive oxygen species (ros) by the transfer of electrons to molecular oxygen. plants are adequately protected by the presence of multiple antioxidative enzymes in different organelles of the plant such as chloroplasts, cytosol, mitochondria and peroxisomes. under high light and co(2) limiting conditions caused by environmental stress like salinity, these ant ... | 2006 | 16534598 |
| factors contributing to dwarfing in the mangrove avicennia marina. | in richards bay, south africa, avicennia marina frequently exhibits a distinct productivity gradient, with tree height decreasing markedly from 6-10 m in the fringe zone to <1.5 m in the dwarf zone which is 120 m inland at a slightly higher elevation. in this investigation, soil physico-chemical conditions between fringe and dwarf a. marina were compared and the constraints imposed by any differences on mangrove ecophysiology and productivity determined. | 2006 | 16565149 |
| nmr study of chloride ion interactions with thylakoid membranes. | the role of cl(-) in photosynthetic o(2) evolution has been investigated by observing the (35)cl nmr linewidth under a variety of conditions in aqueous suspensions of chloroplasts, primarily for the halophytes avicennia germinans, avicennia marina, and aster tripolium but also for spinach. the line broadening shows there is weak, ionic binding of cl(-) to thylakoids, the bound cl(-) exchanging rapidly (>>10(4) sec(-1)) with free cl(-) in solution. the binding is necessary for o(2) evolution to o ... | 1984 | 16593474 |
| photosynthetic responses to irradiance by the grey mangrove, avicennia marina, grown under different light regimes. | photosynthetic responses to irradiance by the grey mangrove, avicennia marina (forstk.) vierh var. australasica (walp.) moldenke, were studied using seedlings grown under natural understory shade and exposed conditions as well as in the laboratory under high and low light regimes, i.e. 100% and 6% sunlight, respectively. leaves in exposed locations were subjected to daylight quantum flux densities greater than 1,000 microeinsteins per square meter per second from 0900 to 1700 hours, whereas thos ... | 1982 | 16662621 |
| photosynthetic and stomatal responses of two mangrove species, aegiceras corniculatum and avicennia marina, to long term salinity and humidity conditions. | gas exchange characteristics were studied in two mangrove species, aegiceras corniculatum (l.) blanco and avicennia marina (forstk.) vierh. var australasica (walp.) moldenke, grown under a variety of salinity and humidity conditions. the assimilation rate was measured as a function of the intercellular co(2) concentration [a(c(i)) curve]. the photosynthetic capacity decreased with increase in salinity from 50 to 500 millimolar nacl, as shown by decline in both the initial linear slope and the up ... | 1984 | 16663359 |
| photosynthetic and stomatal responses of the grey mangrove, avicennia marina, to transient salinity conditions. | measurements of gas exchange characteristics were made on intact, attached leaves of hydroponically grown seedlings of avicennia marina (forstk.) vierh. var australasica (walp.) moldenke as the nacl concentration of the culture solution was varied by step changes of 50 millimolar nacl every 2nd day from 50 to 500 to 50 millimolar nacl. the co(2) assimilation rate, stomatal conductance, intercellular co(2) concentration, and evaporation rate decreased at salinities above 250 millimolar nacl and r ... | 1984 | 16663388 |
| properties of thylakoid membranes of the mangroves, avicennia germinans and avicennia marina, and the sugar beet, beta vulgaris, grown under different salinity conditions. | properties of thylakoids isolated from leaves of three salt tolerant species, avicennia germinans l., avicennia marina var resinifera, and beta vulgaris l., were not affected by the salinity in which the plants were grown. with increase in the growth salinity from 50 to 500 millimolar nacl, there were no major effects on the per chlorophyll concentrations of lipids or proteins, or on the rates of uncoupled electron transport per chlorophyll mediated by either the whole chain or the partial react ... | 1984 | 16663875 |
| analysing ethnobotanical and fishery-related importance of mangroves of the east-godavari delta (andhra pradesh, india) for conservation and management purposes. | mangrove forests, though essentially common and wide-spread, are highly threatened. local societies along with their knowledge about the mangrove also are endangered, while they are still underrepresented as scientific research topics. with the present study we document local utilization patterns, and perception of ecosystem change. we illustrate how information generated by ethnobiological research can be used to strengthen the management of the ecosystem. this study was conducted in the godava ... | 2006 | 16681845 |
| purification and partial characterization of an acidic polysaccharide with complement fixing ability from the stems of avicennia marina. | an acidic polysaccharide fraction that had high anticomplementary activity was isolated from the stems of grey mangrove in 0.15% yield. the final fractions was designated ham-3-iib-ii. the polysaccharide fraction appeared to be homogenous by high performance size exclusion chromatography with an estimated molecular weight of 105 kda. the isolated polysaccharide is more effective than polysaccharide k (psk) in its anticomplementary activity at 58 microg/ml of psk and 23 microg/ml of ham-3-iib-ii ... | 2006 | 17002875 |
| genetic structure at range edge: low diversity and high inbreeding in southeast asian mangrove (avicennia marina) populations. | understanding the genetic composition and mating systems of edge populations provides important insights into the environmental and demographic factors shaping species' distribution ranges. we analysed samples of the mangrove avicennia marina from vietnam, northern philippines and australia, with microsatellite markers. we compared genetic diversity and structure in edge (southeast asia, and southern australia) and core (north and eastern australia) populations, and also compared our results wit ... | 2006 | 17032254 |
| iridoid glucosides and flavones from the aerial parts of avicennia marina. | two new iridoid glucosides, namely, 2'-o-[(2e,4e)-5-phenylpenta-2,4-dienoyl]mussaenosidic acid (1; mussaenosidic acid = [1s-(1alpha,4aalpha,7alpha,7aalpha)]-1-(beta-d-glucopyranosyloxy)-1,4a,5,6,7,7a-hexahydro-7-hydroxy-7-methylcyclopenta[c]pyran-4-carboxylic acid) and 2'-o-(4-methoxycinnamoyl)mussaenosidic acid (2), were isolated from the aerial parts of the mangrove plant avicennia marina. beside that, one known iridoid glucoside, 2'-o-coumaroylmussaenosidic acid (3) and four known flavones (f ... | 2006 | 17193312 |
| phenylpropanoid glycosides from avicennia marina. | | 1993 | 17235997 |
| unusual naphthoquinone derivatives from the twigs of avicennia marina. | in a continuing search for novel bioactive compounds from marine mangrove plants, seven new naphthoquinone derivatives were isolated from avicennia marina, namely, avicennone a (1), avicennone b (2), avicennone c (3), avicennone d (4), avicenone e (5), avicennone f (6), and avicennone g (7), along with the known compounds avicequinone a (8), stenocarpoquinone b (9), avicequinone c (10), avicenol a (11), and avicenol c (12). the chemical structures of 1-7 were elucidated by spectroscopic methods. ... | 2007 | 17500572 |
| over expression of cytosolic copper/zinc superoxide dismutase from a mangrove plant avicennia marina in indica rice var pusa basmati-1 confers abiotic stress tolerance. | antioxidant enzymes play an important role in conferring abiotic stress tolerance. superoxide dismutase (sod) is the first enzyme in the enzymatic antioxidative pathway. halophytic plants like mangroves have been reported to have a high level of sod activity, which plays a major role in defending the mangrove species against severe abiotic stresses. we had previously reported the isolation of sod1, a cdna encoding a cytosolic copper zinc superoxide dismutase from the mangrove plant avicennia mar ... | 2008 | 17541718 |
| [distribution and migration of zinc in avicennia marina plant-soil system]. | zinc is a major anthropogenic contaminant in estuarine ecosystem, and has potential ecotoxicological consequences for aquatic animals and plants. an artificial mangrove wetland was set up in greenhouse to study the distribution and migration of zinc in synthetic wastewater in avicennia marina plant-soil system. different concentration synthetic wastewater and 1.5% salinity artificial seawater (control) were discharged into the system in fixed quantity twice a week for a year. the results showed ... | 2007 | 17886642 |
| a patchy growth via successive and simultaneous cambia: key to success of the most widespread mangrove species avicennia marina? | secondary growth via successive cambia has been intriguing researchers for decades. insight into the mechanism of growth layer formation is, however, limited to the cellular level. the present study aims to clarify secondary growth via successive cambia in the mangrove species avicennia marina on a macroscopic level, addressing the formation of the growth layer network as a whole. in addition, previously suggested effects of salinity on growth layer formation were reconsidered. | 2008 | 18006508 |
| effects of used lubricating oil on two mangroves aegiceras corniculatum and avicennia marina. | an outdoor experiment was set up to investigate the effects of used lubricating oil (5 l/m2) on aegiceras corniculatum blanco. and avicennia marina (forsk) vierh., two salt-excreting mangroves. a. marina was more sensitive to used lubricating oil than a. corniculatum and canopy-oiling resulted in more direct physical damage and stronger lethal effects than base-oiling. when treated with canopy-oiling, half of a. corniculatum plants survived for the whole treatment time (90 d); but, for a. marina ... | 2007 | 18232231 |
| growth of avicennia marina and ceriops decandra seedlings inoculated with halophilic azotobacters. | inoculation of azotobacter has significant positive effects on the growth characteristics and pigments in mangrove seedlings of avicennia marina and ceriops decandra. the bacterial inoculation significantly increased the root dry biomass at the maximum of 75.8% at 30 gl(-1) salinity in ceriops decandra. but in avicennia marina, the shoot dry biomass was increased significantly at the maximum of 56.12% at 30 gl(-1) salinity in general, the azotobacter beijerinkii improved the growth characteristi ... | 2007 | 18380082 |
| structure elucidation of five new iridoid glucosides from the leaves of avicennia marina. | a chemical examination of the mangrove plant avicennia marina (forrsk.) vierh resulted in the isolation and characterization of five new iridoids, marinoids a-e (1-5), along with 2'-cinnamoyl-mussaenosidic acid (6), 2'-o-(4''-methoxycinnamoyl) mussaenosidic acid (7), 2'-o-(4''-hydroxycinnamoyl) mussaenosidic acid (8), and 3(r)-hydroxy-5-phenyl-4(e)-pentenoic acid (9). the structures of 1-5 were elucidated on the basis of 1d and 2d nmr (cosy, hmqc, hmbc, and noesy) in association with ir and ms d ... | 2008 | 18395881 |
| the glutathione antioxidant system as a biomarker suite for the assessment of heavy metal exposure and effect in the grey mangrove, avicennia marina (forsk.) vierh. | alterations in the glutathione antioxidant system and lipid peroxidation in avicennia marina were studied under laboratory and field conditions. the activity of glutathione peroxidase (gpx) was found to respond to zn exposure, and a significant positive relationship between leaf zn concentration and gpx activity was observed after 96 h and 8 weeks. lipid hydroperoxides increased proportionally with increasing leaf zn concentration after 2 and 8 weeks, while no changes in total glutathione were o ... | 2008 | 18455197 |
| molecular phylogeny of mangroves ii. intra -and inter-specific variation in avicennia revealed by rapd and rflp markers. | random amplified polymorphic dna (rapd) and restriction fragment length polymorphism (rflp) markers were used to estimate intra- and inter-specific variation in three species of an exclusive mangrove genus, avicennia. intrapopulation polymorphism among the 10 populations of avicennia marina, as measured by percentage of polymorphic rapds, varied between 17.8 and 38.9%, with a standard deviation of 7.28, and the coefficient of variation was 26.5%. polymorphism in avicennia officinalis (pichavaram ... | 1997 | 18464841 |
| new abietane diterpenoids from the mangrove avicennia marina. | phytochemical investigations of the twigs of avicennia marina yielded three new abietane diterpenoids 11-hydroxy-8,11,13-abietatriene 12- o-beta-xylopyranoside ( 1), and a pair of inseparable epimers 6 halpha-11,12,16-trihydroxy-6,7-secoabieta-8,11,13-triene-6,7-dial 11,6-hemiacetal ( 2) and 6 hbeta-11,12,16-trihydroxy-6,7-secoabieta-8,11,13-triene-6,7-dial 11,6-hemiacetal ( 3), as well as the new lignan (7' s,8' r)-4,4',9'-trihydroxy-3,3',5,5'-tetramethoxy-7,8-dehydro-9-al-2,7'-cyclolignan ( 5) ... | 2008 | 18484538 |
| transcript level characterization of a cdna encoding stress regulated nac transcription factor in the mangrove plant avicennia marina. | nac transcription factors are a family of functionally diverse proteins responsive to biotic and abiotic stresses. a full-length cdna isolated from the salt stressed mangrove plant avicennia marina showed high sequence identity to nac proteins induced upon biotic stress in tomato and potato. the predicted protein sequence had all the highly conserved sub domains characteristic of nac domain containing proteins. northern analysis for amnac1 expression under tolerable (250 mm) concentration of nac ... | 2008 | 18603438 |
| an oxidative and salinity stress induced peroxisomal ascorbate peroxidase from avicennia marina: molecular and functional characterization. | apx (ec, 1.11.1.11) has a key role in scavenging ros and in protecting cells against their toxic effects in algae and higher plants. a cdna encoding a peroxisomal ascorbate peroxidase, am-papx1, was isolated from salt stressed leaves of avicennia marina (forsk.) vierh. by est library screening and its expression in the context of various environmental stresses was investigated. am-papx1 contains an orf of 286 amino acids coding for a 31.4 kda protein. the c-terminal region of the am-papx1 orf ha ... | 2008 | 18614374 |
| two new metabolites from the mangrove endophytic fungus no. 2106. | two new metabolites, named no. 2106 a (1) and cyclo-(n-meval-n-meala) (2), have been produced by the endophytic fungus no. 2106 isolated from the seeds of the mangrove avicennia marina in hong kong. the structures were elucidated by 2d nmr, hr-ms, and x-ray diffraction analyses. | 2008 | 18636373 |
| corrections and updates to the article by duke et al. (2005) reporting on the unusual occurrence and cause of dieback of the common mangrove species, avicennia marina, in ne australia. | | 2008 | 18755333 |
| a novel analytical approach for investigation of anthracene adsorption onto mangrove leaves. | a solid surface fluorimetry approach was established for direct determination of anthracene (an) adsorbed onto fresh mangrove leaves. the experimental results showed that the linear dynamic ranges for determination of an adsorbed onto avicennia marina (am), bruguiera gymnorrhiza (bg), kandelia candel (kc) and rhizophors stylosa (rs) leaves varied from 0.92 to 8.71, 0.089 to 0.70, 0.063 to 5.61 and 0.11 to 1.82 microgg(-1), with detection limits of 5.77, 1.79, 4.29 and 1.42 ngg(-1), respectively, ... | 2008 | 18761174 |
| intervessel pit structure and histochemistry of two mangrove species as revealed by cellular uv microspectrophotometry and electron microscopy: intraspecific variation and functional significance. | intervessel pits play a key role in trees' water transport, lying at the base of drought-induced embolism, and in the regulation of hydraulic conductivity via hydrogels bordering pit canals. recently, their microstructure has been the focus of numerous studies, but the considerable variation, even within species and the histochemistry of pit membranes, remains largely unexplained. in the present study, intervessel pits of the outermost wood were examined for avicennia marina, of dry and rainy se ... | 2008 | 18793483 |
| microbial flora associated with submerged mangrove leaf litter in india. | we studied the microbial flora in decomposing mangrove leaves in relation to changes in nitrogen and tannin levels, and in penaeid prawn assemblages. senescent leaves of two mangrove species (rhizophora apiculata and avicennia marina) kept in nylon bags, were separately immersed for 80 days in five tanks full of mangrove water. a known amount of decomposing leaves was collected every ten days from each tank for microorganism counts, total nitrogen and tannin measurement, and juvenile penaeid pra ... | 2007 | 19069754 |
| isolation and molecular characterization of genetically diverse antagonistic, diazotrophic red-pigmented vibrios from different mangrove rhizospheres. | genetic diversity of red-pigmented vibrios from different mangrove rhizospheres (porteresia coarctata, avicennia marina and rhizophora mucronata) collected from pichavaram mangrove, india was investigated. twenty red-pink pigmented strains were isolated, 16s rrna gene analyses indicted that these isolates belong to the genus vibrio and were phylogenetically closely related to the type strains of vibrio rhizosphaerae and vibrio ruber. the rep-pcr analysis using gtg(5) and box primers had similar ... | 2009 | 19187214 |
| spectral reflectance properties of mangrove species of the muthupettai mangrove environment, tamil nadu. | in the muthupettai mangrove environment, spectral properties of six mangrove species viz. avicennia marina, aegiceras corniculatum, excoecaria agallocha, acanthus ilicifolius, suaeda monoica and s. maritima was studied using multi band ground truth radiometer (model-041). the study found that the chlorophyll concentration of different mangrove leaves varies between 0.05 and 0.36 mg g(-1), registering the minimum in s. maritima and maximum in e. agallocha. interestingly species with higher chloro ... | 2008 | 19295083 |
| [isolation and identification of compounds from marine mangrove plant avicennia marina]. | to investigate the chemical constituents from avicennia marina. | 2009 | 19377635 |
| a diurnally regulated dehydrin from avicennia marina that shows nucleo-cytoplasmic localization and is phosphorylated by casein kinase ii in vitro. | dehydrins have a key role in protecting plants from dehydration stress. we report here the isolation of two cdnas coding for the same dehydrin, amdhn1 and amdhn1a from salt stressed leaves of avicennia marina (forsk.) vierh. by est library screening. amdhn1 was found to contain a retained intron that was absent in amdhn1a. amdhn1 expression in the context of various environmental stresses was investigated. in leaves, amdhn1 shows a diurnal pattern of regulation and is induced only by mannitol ap ... | 2009 | 19398349 |
| field evaluation of repellency effect of some plant extracts against mosquitoes in egypt. | sixteen ethanolic and petroleum ether extracts of 4 indigenous plants namely echinochloa stagninum (gramineae), phragmites austra-lis (poaceae), avicennia marina (avicenniaceae) and artemisia monosperma (compositae), were evaluated on human volunteers, and compared with off! (deet or n.n.diethyl toulamide), a commercial plant-based repellent against wild mosquitoes in tanbol district about 15 km north to el-mansoura city. the repellent action of the plant extracts tested varied depending on the ... | 2009 | 19530610 |
| ecosystem engineering potential of the gastropod terebralia palustris (linnaeus, 1767) in mangrove wastewater wetlands--a controlled mesocosm experiment. | the effect of different sewage concentrations (0, 20, 60 and 100%), vegetation (bare, avicennia marina or rhizophora mucronata) and immersion periods (immersion/emersion period of 12/12 h or 3/3 days just for 100%) conditions were studied for 6 months on survival and growth rates of terebralia palustris (linnaeus, 1767). gastropods' activity and ecosystem engineering preformed at bare and a. marina planted cells and 3 sewage conditions (0, 20 and 60%) were determined. survival rates were higher ... | 2010 | 19640623 |
| organochlorine pesticides in avicennia marina from the mumbai mangroves, india. | this paper examines the concentration levels of organochlorine pesticides (ocps) such as hexachlorocyclohexane (hch) (alpha, beta and gamma), aldrin, endosulfan (alpha, beta), dde, ddd, and ddt in the leaf, root and sediment part of avicennia marina, a dominantly distributed mangrove species in mumbai. the overall pattern of accumulation of ocps was observed as sigmahch> sigmaddt> sigmaendosulfan>aldrin. the occurrence of alphahch was found to be frequent in all the samples. the leaf and root sa ... | 2009 | 19665754 |
| mixed heavy metals tolerance and radial oxygen loss in mangrove seedlings. | the effects of a mixture of heavy metals (pb, zn and cu) on growth, radial oxygen loss (rol) and the spatial pattern of rol were investigated in mangrove seedlings of three species: aegiceras corniculatum, avicennia marina and bruguiera gymnorrhiza. heavy metals inhibited the growth of seedlings and led to decreased rol and changes in the "tight" barrier spatial pattern of rol. there was a significant positive correlation between the amount of rol from the roots of seedlings and metal tolerance. ... | 2009 | 19692098 |
| biological and environmental characteristics of mangrove habitats from manori creek, west coast, india. | mumbai, a megacity of india, and its adjacent marine environment, though heavily stressed from various anthropogenic interferences, harbor approximatley 146 km(2) of mangrove cover. manori creek, in the close vicinity of mumbai, sustains relatively better mangrove formations. a creek habitat had been evaluated for its biological and environmental characteristics, and is compared with similar but relatively lesser stressed mandovi estuary (approximately 475 km south of mumbai). several evidences ... | 2010 | 19728126 |
| applying benthic index of biotic integrity in a soft bottom ecosystem in north of the persian gulf. | in this study, the chesapeake bay benthic index of biotic integrity (b-ibi) was selected in an attempt to describe ecological health of soft bottom channels (khowr-e musa) in north of the persian gulf. most of study area was found to be in degraded or severely degraded conditions. b-ibi scores were ranged between 1 and 3.86. comparison ofmacrobenthos abundance and organic content between two developmental periods showed significant difference (p < 0.05). after the establishment and development o ... | 2009 | 19777783 |
| nitrogen fertilization enhances water-use efficiency in a saline environment. | effects of salinity and nutrients on carbon gain in relation to water use were studied in the grey mangrove, avicennia marina, growing along a natural salinity gradient in south-eastern australia. tall trees characterized areas of seawater salinities (fringe zone) and stunted trees dominated landward hypersaline areas (scrub zone). trees were fertilized with nitrogen (+n) or phosphorus (+p) or unfertilized. there was no significant effect of +p on shoot growth, whereas +n enhanced canopy develop ... | 2010 | 19906150 |
| pyridine salvage and nicotinic acid conjugate synthesis in leaves of mangrove species. | the metabolic fate of [carbonyl-14c]nicotinamide was surveyed in leaf disks of seven mangrove species, bruguiera gymnorrhiza, rhizophora stylosa, kandeliaobovata, sonneratia alba, pemphis acidula, lumnitzera racemosa and avicennia marina, with and without 250 mm nacl. uptake of [14c]nicotinamide by leaf disks was stimulated by 250 mm nacl in k. candel, r. stylosa, a. marina and l. racemosa. [carbonyl-14c]nicotinamide was converted to nicotinic acid and was utilised for the synthesis of nucleotid ... | 2010 | 19913262 |
| expression and characterization analysis of type 2 metallothionein from grey mangrove species (avicennia marina) in response to metal stress. | metallothioneins (mts) are a family of low-molecular-weight cysteine-rich proteins and are thought to play possible roles in metal metabolism or detoxification. to evaluate the roles of metallothioneins in metal homeostasis or tolerance in avicennia marina, a real-time quantitative pcr protocol was developed to directly evaluate the expression of ammt2 mrna, when a. marina seedlings were exposed to different concentrations of zinc (zn), copper (cu) or lead (pb) for 3 and 7d. real-time quantitati ... | 2010 | 20435357 |
| intra- and interspecific facilitation in mangroves may increase resilience to climate change threats. | mangroves are intertidal ecosystems that are particularly vulnerable to climate change. at the low tidal limits of their range, they face swamping by rising sea levels; at the high tidal limits, they face increasing stress from desiccation and high salinity. facilitation theory may help guide mangrove management and restoration in the face of these threats by suggesting how and when positive intra- and interspecific effects may occur: such effects are predicted in stressed environments such as t ... | 2010 | 20513720 |
| fatty acids in an estuarine mangrove ecosystem. | fatty acids have been successfully used to trace the transfer of organic matter in coastal and estuarine food webs. to delineate these web connections, fatty acid profiles were analyzed in species of microbes (azotobacter vinelandii, and lactobacillus xylosus), prawns (metapenaeus monoceros and macrobrachium rosenbergii) and finfish (mugil cephalus), that are associated with decomposing leaves of two mangrove species, rhizophora apiculata and avicennia marina. the fatty acids, except long chain ... | 2010 | 20527460 |
| a salt-inducible chloroplastic monodehydroascorbate reductase from halophyte avicennia marina confers salt stress tolerance on transgenic plants. | plant growth and productivity are adversely affected by various abiotic stress factors. in our previous study, we used avicennia marina, a halophytic mangrove, as a model plant system for isolating genes functioning in salt stress tolerance. a large scale random est sequencing from a salt stressed leaf tissue cdna library of one month old a. marina plants resulted in identification of a clone showing maximum homology to monodehydroascorbate reductase (am-mdar). mdar plays a key role in regenerat ... | 2010 | 20600571 |
| [adaptability of mangrove avicennia marina seedlings to simulated tide-inundated times]. | a laboratory test on the effects of differents simulated tide-inundated times with 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24 h x d(-1) on the growth of avicennia marina seedlings was conducted. the ten growth information indices including chlorophyll, root vigor, growth, biomass and photosynthetic rate were mensurated. the principal components analysis was made combining the ten growth information indices. the 210 d experimental results showed that the chlorophyll, root vigor, growth and biomas ... | 2010 | 20623875 |
| antibacterial activity of some medicinal mangroves against antibiotic resistant pathogenic bacteria. | the antibacterial activity of the leaves and bark of mangrove plants, avicennia marina, a. officinalis, bruguiera sexangula, exoecaria agallocha, lumnitzera racemosa, and rhizophora apiculata was evaluated against antibiotic resistant pathogenic bacteria, staphylococcus aureus and proteus sp. soxhlet extracts of petroleum ether, ethyl acetate, ethanol and water were prepared and evaluated the antibacterial activity using agar diffusion method. most of the plant extracts showed promising antibact ... | 2010 | 20838519 |
| nitric oxide enhances salt secretion and na(+) sequestration in a mangrove plant, avicennia marina, through increasing the expression of h(+)-atpase and na(+)/h(+) antiporter under high salinity. | modulation of nitric oxide (no) on ion homeostasis, by enhancing salt secretion in the salt glands and na(+) sequestration into the vacuoles, was investigated in a salt-secreting mangrove tree, avicennia marina (forsk.) vierh. the major results are as follows: (i) under 400 mm nacl treatment, the application of 100 µm sodium nitroprusside (snp), an no donor, significantly increased the density of salt crystals and salt secretion rate of the leaves, along with maintaining a low na(+) to k(+) rati ... | 2010 | 21030403 |
| bioavailability and concentration of heavy metals in the sediments and leaves of grey mangrove, avicennia marina (forsk.) vierh, in sirik azini creek, iran. | the concentration and bioavailability of ni, cu, cd, zn, and pb in the sediments and leaves of grey mangrove, avicennia marina, were studied throughout sirik azini creek (iran) with a view to determine heavy metals bioavailability, and two methods were used. results show that zn and ni had the highest concentrations in the sediments, while cd and cu were found to have the lowest concentrations in the sediments. compared to the mean concentrations of heavy metals in sedimentary rock (shales), zn ... | 2010 | 21053092 |
| [distribution of hg in mangrove plants and correlation with hg speciation in sediments]. | plant is an important role in biogeochemical cycle of hg. the aim of this study is to ascertain hg accumulation in several kinds of mangrove plants, and to discuss relationship among hg concentrations in mangrove plants and different hg speciation in sediments. contents of total mercury (thg) in mangrove plants and sediments were determined. hg speciation was determined with a modified tessier's method. contents of thg of the mangrove plants were in the range of 817.5-3 197.6 ng/g. in detail, hg ... | 2010 | 21072952 |
| mangrove plants as a source of lead compounds for the development of new antiplasmodial drugs from south east coast of india. | malaria is the world's leading killer among the infectious diseases. the treatment of malaria is mystified by the challenges of widespread resistance of the malaria parasites to cheap and affordable antimalarial drugs. the present study was made in an attempt to identify the in vitro antiplasmodial activity against mangrove plant parts. (avicennia marina, acanthus ilicifolius, bruguiera cylindrica, excoecaria agallocha, rhizophora apiculata, and rhizophora mucronata mangrove plant extracts exhib ... | 2010 | 21120528 |
| dissolved iron supply limits early growth of estuarine mangroves. | three mesocosm experiments were performed in an outdoor facility to quantify the responses of five mangrove species grown from seedling to sapling stage to increasing rates of dissolved iron supply. stem extension and biomass of mangroves were measured in the first two experiments, and in the third experiment, rates of microbial iron reduction were measured in relation to stem extension of two mangrove species. in all experiments, mangrove growth was enhanced by increasing iron supply, although ... | 2010 | 21141184 |
| plant growth and the performance of mangrove wetland microcosms for mariculture effluent depuration. | this study established wetland microcosms that were either unplanted or planted in monoculture with native mangrove species in taiwan (avicennia marina, rhizophora stylosa, and lumnitzera racemosa) for the purpose of receiving high-salinity mariculture effluents; additionally, the microcosms operated at different hydraulic retention times (hrts). plant growth and the performance of the microcosms with respect to pollutant removal were investigated. the results showed that seedlings of all three ... | 2011 | 21561629 |
| predicting the functionally distinct residues in the heme, cation, and substrate-binding sites of peroxidase from stress-tolerant mangrove specie, avicennia marina. | recent work was conducted to predict the structure of functionally distinct regions of avicennia marina peroxidase (ap) by using the structural coordinates of barley grains peroxidase as the template. this enzyme is utilized by all living organisms in many biosynthetic or degradable processes and in defense against oxidative stress. the homology model showed some distinct structural changes in the heme, calcium, and substrate-binding regions. val53 was found to be an important coordinating resid ... | 2011 | 21660646 |
| nigerapyrones a-h, a-pyrone derivatives from the marine mangrove-derived endophytic fungus aspergillus niger ma-132. | eight new a-pyrone derivatives, namely, nigerapyrones a-e (1-5) and nigerapyrones f-h (8-10), along with two known congeners, asnipyrones b (6) and a (7), were isolated from aspergillus niger ma-132, an endophytic fungus obtained from the fresh tissue of the marine mangrove plant avicennia marina. the structures of these compounds were elucidated on the basis of spectroscopic analysis. the undescribed geometries of the trisubstituted double bonds (c-9 and c-11) for asnipyrone b (6) have now been ... | 2011 | 21774474 |
| Biosynthesis, characterization and biological evalutation of Fe(III) and Cu(II) complexes of neoaspergillic acid, a hydroxamate siderophore produced by co-cultures of two marine-derived mangrove epiphytic fungi. | A hydroxamate siderophore, neoaspergillic acid (1), and a red pigment, ferrineoaspergillin (2) which is an Fe(III) complex of 1, were produced by co-cultures of two epiphytic fungi from a rotten fruit of the mangrove Avicennia marina from the South China Sea, and a new Cu(II) complex of 1, designated as cuprineoaspergillin (3), was also prepared by treatment of 1 with cupric acetate. All the compounds (1-3) were characterized by physical and chemical techniques, including 1H NMR, ESIMS, and phot ... | 2011 | 21922920 |
| Multiple markers pyrosequencing reveals highly diverse and host-specific fungal communities on the mangrove trees Avicennia marina and Rhizophora stylosa. | Fungi are important actors in ecological processes and trophic webs in mangroves. Although saprophytic fungi occurring in the intertidal part of mangrove have been well studied, little is known about the diversity and structure of the fungal communities in this ecosystem or about the importance of functional groups like pathogens and mutualists. Using tag-encoded 454 pyrosequencing of the ITS1, ITS2, nu-ssu-V5 and nu-ssu-V7 regions, we studied and compared the fungal communities found on the mar ... | 2011 | 22092266 |