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Insulin-like antigen of mangrove leaves and its anti-diabetic activity in alloxan-induced diabetic rats.The objective of this study was to evaluate the anti-diabetic potential of three mangrove plants, Rhizophora mucronata, Rhizophora apiculata and Rhizophora annamalayana, and to detect the presence of their insulin-like protein. The in vivo anti-diabetic experiment was done on male albino Wister rats. Oral administration of 60?mg?kg(-1) leaf powder extract of the three different mangrove plants for 30 days modulated the parameters such as blood glucose, plasma insulin, body weight, total haemoglo ...201122017188
a review on biosynthesis of nanoparticles by marine organisms.marine organisms produce remarkable nanofabricated structures in cell wall, shells, pearls and fish bones. marine microorganisms such as bacteria (e. coli, pseudomonas sp.), cyanobacteria (spirulina platensis, oscillatoria willei, phormidium tenue), yeasts (pichia capsulata, rhodospiridium diobovatum), fungi (thraustochytrium sp., penicillium fellutanum, aspergillus niger), and algae (navicula atomus, diadesmis gallica, stauroneis sp. sargassum wightii, fucus vesiculosus) are reported to synthes ...201323202242
pestalotiopens a and b: stereochemically challenging flexible sesquiterpene-cyclopaldic acid hybrids from pestalotiopsis sp.from the endophytic fungus pestalotiopsis sp. isolated from the leaves of the chinese mangrove, rhizophora mucronata, two novel hybrid sesquiterpene-cyclopaldic acid metabolites with an unusual carbon skeleton, named pestalotiopens a and b, were obtained, together with the already known phytotoxin altiloxin b. pestalotiopen b even contains a third, triketide-derived module. the constitutions and the absolute configurations of the new metabolites and of altiloxin b were unambiguously determined b ...201324123472
population dynamics of free living, nitrogen fixing bacteria azospirillum in manakkudi mangrove ecosystem, india.seasonal variations of population dynamics of free living nitrogen fixing bacteria, azospirillum in relation to chemical parameters in manakkudi mangrove ecosystem was assessed in root and rhizosphere soil samples of mangroves and mangrove associated plants. in rhizosphere soil and root samples, the counts of azospirillum were recorded maximum in acrostichum aureum as 8.63 +/- 0.92 x 10(4) and 115.48 +/- 17.36 x 10(4) cfu g(-1), respectively. the counts of azospirillum in non-rhizosphere soil va ...201223029909
antibacterial activity of mangrove leaf extracts against human pathogens.the antibacterial activity of leaf extract of mangroves, namely, rhizophora mucronata, sonneratia alba and exoecaria agallocha from chorao island, goa was investigated against human bacterial pathogens staphylococcus aureus, streptococcus sp., salmonella typhi, proteus vulgaris and proteus mirabilis. as compared to aqueous, ethanol extract showed broad-spectrum activity. the multidrug-resistant (mdr) bacteria salmonella typhi was inhibited by the ethanol extract of s. alba leaf whereas the other ...201223626390
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 ...201021120528
mangrove plant, rhizophora mucronata (lamk, 1804) mediated one pot green synthesis of silver nanoparticles and its antibacterial activity against aquatic pathogens.biosynthesis of nanoparticles has received increasing attention due to the growing need to develop safe, time-effective and environmentally friendly technologies for nano-materials synthesis. this paper reports the one pot green synthesis of silver nanoparticles (agnps) using the leaf bud extract of a mangrove plant, rhizophora mucronata and their antimicrobial effects against aquatic pathogens. highly stable agnps were synthesized by treating the mangrove leaf bud extract with aqueous silver ni ...201222608057
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 ...201019640623
comparative anatomy of intervessel pits in two mangrove species growing along a natural salinity gradient in gazi bay, kenya.according to the air-seeding hypothesis, embolism vulnerability in xylem elements is linked directly to bordered pit structure and functioning. to elucidate the adaptive potential of intervessel pits towards fluctuating environmental conditions, two mangrove species with a distinct ecological distribution growing along a natural salinity gradient were investigated.200717565970
can scientific evidence support using bangladeshi traditional medicinal plants in the treatment of diarrhoea? a review on seven plants.diarrhoea is a common disease which causes pain and may be deadly, especially in developing countries. in bangladesh, diarrhoeal diseases affect thousands of people every year, and children are especially vulnerable. bacterial toxins or viral infections are the most common cause of the disease. the diarrhoea outbreaks are often associated with flood affected areas with contaminated drinking water and an increased risk of spreading the water-borne disease. not surprisingly, plants found in the ne ...201323698166
anticancer and antimicrobial activity of mangrove derived fungi hypocrea lixii vb1.mangrove is one of the oldest living tree species and its leaves are among the most extensively studied botanicals in use today. scientific research throughout the world has found evidence to support the fact that its foliar extracts have great potential against human microbial pathogens. this study highlights the isolation of foliar fungi from rhizophora mucronata, avicenna officialis and avicenna marina.201223302537
high-resolution time series of vessel density in kenyan mangrove trees reveal a link with climate.tropical trees are often excluded from dendrochronological investigations because of a lack of distinct growth ring boundaries, causing a gap in paleoclimate reconstructions from tropical regions. the potential use of time series of vessel features (density, diameter, surface area and hydraulic conductivity) combined with spectral analysis as a proxy for environmental conditions in the mangrove rhizophora mucronata was investigated. intra-annual differences in the vessel features revealed a trad ...200515998396
in vitro antiplasmodial activity of ethanolic extracts of mangrove plants from south east coast of india against chloroquine-sensitive plasmodium falciparum.malaria is one of the most prevalent infectious diseases in the world. treatment for malaria is commonly inadequate due to the lack of quality assured effective drugs. the effectiveness of these drugs is declining at an ever accelerating rate, with consequent increase in malaria related morbidity and mortality. the newest antiplasmodial drug from plants is needed to overcome this problem. numerous mangroves and mangal associates are used as folklore medicine to treat various human diseases. the ...201020978786
ophiostomatoid fungi associated with mangroves in south africa, including ophiostoma palustre sp. nov.mangrove trees are continuously under stress due to environmental and/or anthropogenic pressures, which expose them to attack by pathogens, compromising their survival. ophiostomatoid fungi cause sap stain and diseases of a wide spectrum of tree species globally. these fungi infect trees through natural, insect, animal and/or human made wounds. during routine surveys of mangrove trees in south africa, wounds on branches and stems of avicennia marina were regularly monitored for the presence of o ...201627562287
endophytic botryosphaeriaceae, including five new species, associated with mangrove trees in south africa.little is known regarding the fungi, especially fungal pathogens, associated with mangroves in africa. this includes fungi in the botryosphaeriaceae that comprise numerous opportunistic, stress-associated pathogens often associated with trees affected by environmental and anthropogenically generated stresses, such as those affecting mangroves. we investigated the occurrence of endophytic botryosphaeriaceae along the entire distribution of mangroves in south africa. asymptomatic branches were col ...201728317540
biosynthesis of silver nanoparticles by using mangrove plant extract and their potential mosquito larvicidal property.to identify the larvicidal activities of silver nano particles synthesised with rhizophora mucronata (r. mucronata) leaf extract against the larvae of aedes aegypti (ae. aegypti) and culex quinquefasciatus (cx. quinquefasciatus).201122014736
insecticidal compounds from rhizophoraceae mangrove plants for the management of dengue vector aedes aegypti.mosquito control is facing a threat due to the emergence of resistance to synthetic insecticides. insecticides of botanical origin could serve as potential alternatives in future. larvicidal efficacies of different parts of mangrove plants belonging to rhizophoraceae family were tested against the late iv instar larvae of dengue vector, aedes aegypti.201424947217
mangrove propagule size and oil contamination effects: does size matter?three mangroves species with differential propagule size, avicennia marina (2.5±0.3cm), bruguiera gymnorrhiza (16±2cm) and rhizophora mucronata (36±3cm), were subjected to oil contamination. in a series of glasshouse and field experiments, the sediment, propagules, leaves and stems were oiled and growth monitored. oiling of the propagules, leaves, internodes or sediment reduced plant height, leaf number, leaf chlorophyll content index and induced growth abnormalities, leaf abscission and mortali ...201627342901
interaction between water and wind as a driver of passive dispersal in mangroves.although knowledge on dispersal patterns is essential for predicting long-term population dynamics, critical information on the modalities of passive dispersal and potential interactions between vectors is often missing. here, we use mangrove propagules with a wide variety of morphologies to investigate the interaction between water and wind as a driver of passive dispersal. we imposed 16 combinations of wind and hydrodynamic conditions in a flume tank, using propagules of six important mangrove ...201525811191
α-glucosidase inhibitory activity of selected philippine plants.antidesma bunius spreng. (phyllantaceae), averrhoa bilimbi l. (oxalidaceae), biophytum sensitivum (l.) dc. (oxalidaceae), ceriops tagal (perr.) c.b. rob. (rhizophoraceae), kyllinga monocephala rottb. (cyperaceae), and rhizophora mucronata lam. (rhizophoraceae) are used as remedies to control diabetes. in the present study, these plants were screened for their potential α-glucosidase inhibitory activity.201222954497
effects of experimental sedimentation on the phenological dynamics and leaf traits of replanted mangroves at gazi bay, kenya.sedimentation results in the creation of new mudflats for mangroves to colonize among other benefits. however, large sediment input in mangrove areas may be detrimental to these forests. the dynamics of phenological events of three mangrove tree species (avicennia marina, ceriops tagal, and rhizophora mucronata) were evaluated under experimental sediment burial simulating sedimentation levels of 15, 30, and 45 cm.while there was generally no shift in timing of phenological events with sedimentat ...201425473472
interaction of free-living marine nematodes in the artificial mangrove environment (southeast coast of india).free-living marine nematode diversity was analyzed between avicennia marina and rhizophora mucronata mangrove covers of the vellar estuary (southeast coast of india). a total of 4,976 specimens of free-living marine nematodes were collected in 56 species. comparatively, a higher species richness was obtained for a. marina (52 species) than for r. mucronata (44 species), whereas 40 species commonly existed in both mangrove covers. a higher density of nematodes was found in sediments of sandy natu ...201423928719
therapeutics insight with inclusive immunopharmacology explication of human rotavirus a for the treatment of diarrhea.rotavirus is the most common cause of severe infant and childhood diarrhea worldwide, and the morbidity and mortality rate is going to be outnumbered in developing countries like bangladesh. to mitigate this substantial burden of disease, new therapeutics such as vaccine and drug are swiftly required against rotavirus. the present therapeutics insight study was performed with comprehensive immunoinformatics and pharmacoinformatics approach. t and b-cell epitopes were assessed in the conserved re ...201627445802
biological activity of secondary metabolites isolated from mangrove fungi neurospora crassa.the screening of antimicrobial compounds from mangrove-associated fungi is a promising way to meet the increasing threat of drug-resistant strains of human pathogens. in the present study, a novel foliar fungus was isolated from the leaves of rhizophora mucronata. crude fungal extracts were obtained through solvent extraction. the fungal extracts exhibited an effective antimicrobial activity against bacterial strains. this study reports the cytotoxic activity of the secondary metabolite produced ...201324640249
insecticidal activity of ethyl acetate extracts from culture filtrates of mangrove fungal endophytes.in the search for novel potent fungi-derived bioactive compounds for bioinsecticide applications, crude ethyl acetate culture filtrate extracts from 110 mangrove fungal endophytes were screened for their toxicity. toxicity tests of all extracts against brine shrimp (artemia salina) larvae were performed. the extracts with the highest toxicity were further examined for insecticidal activity against spodoptera litura larvae and acetylcholinesterase (ache) inhibition activity. the results showed th ...201526190921
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 ...200818793483
screening for potential α-glucosidase and α-amylase inhibitory constituents from selected vietnamese plants used to treat type 2 diabetes.the 18 plant species investigated in this study have been used as herbal antidiabetic remedies in vietnamese traditional medicines. this study aimed to evaluate their ability to inhibit α-glucosidase and α-amylase, two key enzymes involved in serum glucose regulation.201627041401
frequent water drinking by zanzibar red colobus (procolobus kirkii) in a mangrove forest refuge.isolated populations of procolobus kirkii on uzi island, zanzibar, use rhizophora mucronata-dominated mangrove forest for refuge. three groups, observed over 14 months, spent up to 85% of total observation time in mangroves with brief excursions to adjacent upland coral rag forest, habitat degraded by human cutting. a large proportion of monkeys' diets consisted of plant parts of five mangrove species. water drinking was common and 326 water-drinking events were recorded at a rate of up to 0.87 ...200818651613
cytosporones, coumarins, and an alkaloid from the endophytic fungus pestalotiopsis sp. isolated from the chinese mangrove plant rhizophoramucronata.chemical examination of the endophytic fungus pestalotiopsis sp., isolated from the leaves of the chinese mangrove rhizophora mucronata, yielded 11 new compounds including cytosporones j-n (1-3, 5-6), five new coumarins pestalasins a-e (8-12), and a new alkaloid named pestalotiopsoid a (14), along with the known compounds cytosporone c (4), dothiorelone b (7), and 3-hydroxymethyl-6,8-dimethoxycoumarin (13). the structures of the new compounds were unambiguously elucidated on the basis of extensi ...200919762244
chromones from the endophytic fungus pestalotiopsis sp. isolated from the chinese mangrove plant rhizophora mucronata.six new chromones, named pestalotiopsones a-f (1-6), and the known derivative 7-hydroxy-2-(2-hydroxypropyl)-5-methylchromone (7) were obtained from the mycelia and culture filtrate of the mangrove endophytic fungus pestalotiopsis sp., which was isolated from leaves of the chinese mangrove plant rhizophora mucronata. their structures were elucidated on the basis of spectroscopic data. pestalotiopsones a-f are chromones having both an alkyl side chain substituted at c-2 and a free or substituted c ...200919271764
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 ...200919187214
toxicity of some plant extracts against vector of lymphatic filariasis, culex pipiens.many insecticides are generally used as larvicides to control culex pipiens, vector of lymphatic filariasis. this study was undertaken to evaluate the larvicidal activity of some potential larvicidal plants extracts against c. pipiens larvae. the toxic effects of both ethanolic and petroleum ether plant extracts were evaluated under laboratory conditions against 3rd instar larvae of c. pipiens. forty ethanolic and petroleum ether extracts of 10 plants namely echinochloa stagninum, phragmites aus ...201526012233
in vitro anti-human immunodeficiency virus activity of polysaccharide from rhizophora mucronata poir.a polysaccharide was extracted with 1% sodium carbonate from the bark of rhizophora mucronata and its antiviral activities against human immunodeficiency virus (hiv) were assessed by an in vitro cell culture system. the anti-hiv activity of the alkaline extract was mainly recovered in the 25-75% ethanol-precipitated fraction. rhizophora mucronata polysaccharide (rmp) protected mt-4 cells from the hiv-induced cytopathogenicity and blocked the expression of hiv antigens. rmp completely inhibited t ...199910478446
pestalotiopamide e, a new amide from the endophytic fungus pestalotiopsis sp.chemical examination of the endophytic fungus pestalotiopsis sp., isolated from the leaves of the chinese mangrove rhizophora mucronata, yielded a new amide called pestalotiopamide e (1). the structure of the new compound was unambiguously elucidated on the basis of extensive spectroscopic data analysis.201121462043
regeneration status of mangrove forests in mida creek, kenya: a compromised or secured future?the structure and regeneration patterns of mida creek mangrove vegetation were studied along belt transects at 2 forest sites of mida creek (3 degrees 20's, 40 degrees 00'e): uyombo and kirepwe. based on the species importance values, the dominant mangrove tree species in mida were ceriops tagal (perr.) c. b. robinson and rhizophora mucronata lamk. tree density varied from 1197 trees ha(-1) at kirepwe to 1585 trees ha(-1) at uyombo and mean tree height was higher at the former site compared to t ...200212572823
diversity of endophytic fungi in the roots of mangrove species on the west coast of india.because mangrove plant species are a valuable source of useful metabolites, their endophytes have gained more importance. randomly sampled surface-sterilized whole root segments of four mangrove plant species, acanthus ilicifolius, avicennia officinalis, rhizophora mucronata, and sonneratia caseolaris from the mangroves of udyavara (karnataka) on the west coast of india, were characterized for fungal communities by direct plating, damp chamber, and bubbling chamber incubation methods. the richne ...200212489776
stereochemical assignment of the fungal metabolites pestalotiopsones d and e through enantiopure synthesis.the pestalotiopsones are fungal metabolites isolated from an endophytic fungus pestalotiopsis sp. found in the mangrove rhizophora mucronata, used in traditional chinese medicine to treat symptoms of dysentery. the absolute configurations of pestalotiopsones d (4) and e (5) were elucidated through total synthesis of both the r and s enantiomers, allowing for the assignment of the stereochemistry of the natural compounds as the (+)-s enantiomers. the key steps include homologation of a substitute ...201324168147
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