| a photobacterium-like bacterium able to fix nitrogen. | a photobacterium-like bacterium isolated from the roots of eelgrass (zostera marina) was shown to fix nitrogen under anaerobic conditions. nitrogen fixation by photobacterium spp. has not been reported previous to this. | 1990 | 2372212 |
| tissue-specific expression of the gene for a putative plasma membrane h(+)-atpase in a seagrass. | a cdna clone corresponding to the gene (zha1) for a putative plasma membrane h(+)-atpase of a seagrass (zostera marina l.) was isolated and sequenced. comparison of the amino acid predicted sequence from the nucleotide sequence of zha1 with those encoded by known genes for plasma membrane h(+)-atpases from other plants indicated that zha1 is most similar to the gene (pma4) for a plasma membrane h(+)-atpase in a tobacco (84.4%). northern hybridization indicated that zha1 was strongly expressed in ... | 1996 | 8587992 |
| desulfovibrio zosterae sp. nov., a new sulfate reducer isolated from surface-sterilized roots of the seagrass zostera marina. | a sulfate-reducing bacterium, designated strain lact, was isolated from surface-sterilized roots of the benthic macrophyte zostera marina. cells were motile by means of a single polar flagellum. strain lact utilized lactate, pyruvate, malate, ethanol, l-alanine, fumarate, choline and fructose with sulfate as electron acceptor. in addition, fumarate, pyruvate and fructose were also degraded without an external electron acceptor. sulfate could be substituted with thiosulfate, sulfite and elemental ... | 1999 | 10319511 |
| ferric iron reduction by bacteria associated with the roots of freshwater and marine macrophytes. | in vitro assays of washed, excised roots revealed maximum potential ferric iron reduction rates of >100 micromol g (dry weight)(-1) day(-1) for three freshwater macrophytes and rates between 15 and 83 micromol (dry weight)(-1) day(-1) for two marine species. the rates varied with root morphology but not consistently (fine root activity exceeded smooth root activity in some but not all cases). sodium molybdate added at final concentrations of 0.2 to 20 mm did not inhibit iron reduction by roots o ... | 1999 | 10508065 |
| predator-prey relations between age-1+ summer flounder (paralichthys dentatus, linnaeus) and age-0 winter flounder (pseudopleuronectes americanus, walbaum): predator diets, prey selection, and effects of sediments and macrophytes. | laboratory experiments and weekly trammel net surveys in the navesink river, new jersey (usa) were used to examine the predator-prey interaction between age-1+ summer flounder (paralichthys dentatus) and age-0 winter flounder (pseudopleuronectes americanus). winter flounder (24-67 mm tl) were the dominant piscine prey of summer flounder (n=95, 252-648 mm tl) collected in trammel nets. we observed a temporal shift in summer flounder diets from sand shrimp (crangon septemspinosa) and winter flound ... | 2000 | 10958899 |
| review of nitrogen and phosphorus metabolism in seagrasses. | within the past few decades, major losses of seagrass habitats in coastal waters impacted by cultural eutrophication have been documented worldwide. in confronting a pressing need to improve the management and protection of seagrass meadows, surprisingly little is known about the basic nutritional physiology of these critical habitat species, or the physiological mechanisms that control their responses to n and p gradients. the limited available evidence to date already has revealed, for some se ... | 2000 | 10969167 |
| desulfomusa hansenii gen. nov., sp. nov., a novel marine propionate-degrading, sulfate-reducing bacterium isolated from zostera marina roots. | the physiology and phylogeny of a novel sulfate-reducing bacterium, isolated from surface-sterilized roots of the marine macrophyte zostera marina, are presented. the strain, designated p1t, was enriched and isolated in defined oxygen-free, bicarbonate-buffered, iron-reduced seawater medium with propionate as sole carbon source and electron donor and sulfate as electron acceptor. strain p1t had a rod-shaped, slightly curved cell morphology and was motile by means of a single polar flagellum. cel ... | 2001 | 11760947 |
| tolerance to cadmium of free-living and associated with marine animals and eelgrass marine gamma-proteobacteria. | the tolerance to cd2+ and possible mechanisms of cd2+ detoxification by 178 free-living bacteria isolated from sea water, associated with marine animals (a mussel crenomytilus grayanus, a scallop patinopecten yessoensis), and eelgrass zostera marina collected in the sea of japan and the sea of okhotsk have been studied. the concentrations of 25 and 50 mg cd2+/l were highly toxic and inhibited the growth from 54% to 78% of the total bacteria studied. the free-living bacteria isolated from seawate ... | 2002 | 11927987 |
| deterioration of eelgrass, zostera marina l., meadows by water pollution in seto inland sea, japan. | survival of transplanted zostera marina l. (eelgrass) and environmental conditions (water quality, bottom sediments, sedimentation on leaves and flow regime) were studied concurrently in the center, edge, and at the outside of a eelgrass meadow located in a eutrophic coastal zone in northern hiroshima bay, seto inland sea, japan. eelgrass transplants at the outside of the meadow declined significantly, whereas those at the center were consistently well established. silt content in the bottom sed ... | 2002 | 12523524 |
| natural water-purification system observed in a shallow coastal lagoon: matsukawa-ura, japan. | field surveys and in situ experiments were conducted in the shallow matsukawa-ura in summer to evaluate the biological efficiencies of shallow-water areas for preserving coastal ecosystems. in matsukawa-ura (5.8 km(2)), the suspension-feeding bivalves ruditapes philippinarum and crassostrea gigas were the dominant animals--their total biomasses (wet weight) were estimated to be 3.4 x 10(6) and 2.3 x 10(6) kg, respectively. ulva sp. and zostera marina were the dominant macrophyte species during t ... | 2003 | 12787612 |
| fatty acid composition of individual polar lipid classes from marine macrophytes. | major glycolipids [monogalactosyldiacylglycerol (mgdg), digalactosyldiacylglycerol (dgdg), sulfoquinovosyldiacylglycerol (sqdg)) and phospholipids (phosphatidylcholine (pc), phosphatidylethanolamine (pe) and phosphatidylglycerol (pg)] as well as betaine lipid 1,2-diacylglycero-o-4'-(n,n,n-tri-methyl)-homoserine (dgts) were isolated from anfeltia tobuchiensis (rhodophyta), laminaria japonica, sargassum pallidum (phaeophyta), ulva fenestrata (chlorophyta) and zostera marina (embriophyta), harveste ... | 2004 | 15016568 |
| sulfitobacter delicatus sp. nov. and sulfitobacter dubius sp. nov., respectively from a starfish (stellaster equestris) and sea grass (zostera marina). | on the basis of data from phenotypic and genotypic characterization and analysis of 16s rrna gene sequences, two novel species belonging to the genus sulfitobacter are described. strains kmm 3584(t), a pale-yellowish, non-motile strain isolated from a starfish (stellaster equestris), and kmm 3554(t), which is motile by means of a single subpolar flagellum and was isolated from sea grass (zostera marina), are marine, gram-negative, aerobic, rod-shaped organisms. both strains have the ability to d ... | 2004 | 15023963 |
| effects of pulp mill chlorate on baltic sea algae. | the long-term effects of pulp mill chlorate on different algal species of the baltic sea were studied in land-based model ecosystems simulating the littoral zone. brown algae (phaeophyta) exhibited an extraordinarily high sensitivity to chlorate and pulp mill effluents containing chlorate. all brown algal species ceased growth or showed major signs of toxicity at all concentrations tested, down to microgram per litre levels. ec50 levels for growth of fucus vesiculosus were about 80-100 microg cl ... | 1994 | 15091680 |
| integrin-like protein at the invaginated plasma membrane of epidermal cells in mature leaves of the marine angiosperm zostera marina l. | by immunoblotting with anti-human integrin beta polyclonal antibodies (beta1, beta3 or beta5), a single distinct band of about 60 kda was detected in total protein extracts from mature leaves of the seagrass zostera marina l., but no band was detected in total protein extracts from immature seagrass leaves, freshwater grass leaves or arabidopsis thaliana (l.) heynh. leaves. this integrin-like protein was detected by indirect immunofluorescence microscopy on the surface of non-spherical protoplas ... | 2004 | 15316778 |
| perfusion method for assaying microbial activities in sediments: applicability to studies of n(2) fixation by c(2)h(2) reduction. | a perfusion method for assaying nitrogenase activity (acetylene reduction) in marine sediments was developed. the method was used to assay sediment cores from spartina alterniflora (salt marsh), zostera marina (sea grass), and thalassia testudinum (sea grass) communities, and the results were compared with those of conventional sealed-flask assays. rates of ethylene production increased progressively with time in the perfusion assays, reaching plateau values of 2 to 3 nmol . g of dry sediment . ... | 1982 | 16346036 |
| effects of el niño on distribution and reproductive performance of black brant. | climate in low-latitude wintering areas may influence temperate and high-latitude breeding populations of birds, but demonstrations of such relationships have been rare because of difficulties in linking wintering with breeding populations. we used long-term aerial surveys in mexican wintering areas and breeding areas in alaska, usa, to assess numbers of black brant (branta bernicla nigricans; hereafter brant) on their principal wintering and breeding area in el niño and non-el niño years. we us ... | 2006 | 16634306 |
| zmvha-b1, the gene for subunit b of vacuolar h+-atpase from the eelgrass zostera marina l. is able to replace vma2 in a yeast null mutant. | a vacuolar h(+)-atpase (vha) gene (zmvha-b1) was isolated from an eelgrass (zostera marina) leaf cdna library and was characterized to be approximately 1.4 kbp in length and to encode the b subunit protein of vha comprising 488 amino acids. zmvha-b1 was highly expressed in all organs of eelgrass; the expression level was highest in the leaves. on transformation of a yeast vma2 null mutant with zmvha-b1, yeast cells became able to grow at ph 7.5, accompanied by the vesicular accumulation of lysos ... | 2006 | 17189165 |
| site-specific success of three transplanting methods and the effect of planting time on the establishment of zostera marina transplants. | eelgrass, zostera marina, is the most abundant seagrass species on the coast of korea, but most large eelgrass meadows have disappeared since the 1970s due to human-induced disturbance. to restore disturbed seagrass habitats in die-off areas, seagrass transplanting has been attempted using various methods. here, we assessed the feasibility and efficiency of seagrass transplanting methods depending on the sediment type at the planting site. additionally, the effect of planting time on the establi ... | 2007 | 17512958 |
| effects of ulvoid (ulva spp.) accumulation on the structure and function of eelgrass (zostera marina l.) bed. | the objective of this study is to clarify the effect of ulvoid (ulva spp.) accumulation on the structure and function of an eelgrass bed by the coast of iwakuni, seto inland sea, japan. we monitored eelgrass shoot density and volume of ulvoid accumulation in the study site and evaluated effects of the accumulated ulvoid canopy on the percent survival, seedling density, growth rates, photosynthetic photon flux density (ppfd) and carbon contents of eelgrass. eelgrass shoot density decreased by the ... | 2007 | 17692339 |
| eelgrass (zostera marina l.) in the gulf of california:. | discovery of its nutritional value by the seri indians zostera marina occurs in the northern gulf of california. the grain of eelgrass is harvested in the spring and formed an important part of traditional seri diet and culture. this is the only known case of a grain from the sea being used as a human food source. eelgrass has considerable potential as a general food resource for mankind. its cultivation would not require fresh water, pesticides, or artificial fertilizer. | 1973 | 17832031 |
| [characteristics of adhesion of epiphytic bacteria on leaves of the seagrass zostera marina and on abiotic surfaces]. | a comparative study of the adhesion of epiphytic bacteria and marine free-living, saprophytic, and pathogenic bacteria on seagrass leaves and abiotic surfaces was performed to prove the occurrence of true epiphytes of zostera marina and to elucidate the bacterium-plant symbiotrophic relationships. it was shown that in the course of adhesion to the seagrass leaves of two taxonomically different bacteria, cytophaga sp. kmm 3552 and pseudoalteromonas citrea kmm 461, isolated from the seagrass surfa ... | 2007 | 17974207 |
| trace metals in sediments and zostera marina of san ignacio and ojo de liebre lagoons in the central pacific coast of baja california, mexico. | san ignacio and ojo de liebre lagoons in central baja california, mexico are nursery and grazing grounds for whales and turtles. ojo de liebre lagoon also supports a salt mine operation. by concentrating trace metals via evaporation, this activity might harm biota. consequently, salt mining might be incompatible with the lagoon's ecological role. eelgrass can incorporate these elements and reroute them to other organisms. trace metals in sediments (cd, co, cu, mn, ni, pb, zn, and fe) were measur ... | 2008 | 18188634 |
| before and after wasting disease in common eelgrass zostera marina along the french atlantic coasts: a general overview and first accurate mapping. | we examined the original manuscripts of a french national survey conducted in 1933 on the state of common eelgrass zostera marina beds along the french atlantic coasts during the period when wasting disease struck the entire north atlantic population in the 1930s. based on gis related techniques and old sets of aerial photographs, we present the first accurate mapping of the z. marina beds before wasting disease occurred and assess their spatial recolonization since the 1950s in the chausey arch ... | 2008 | 18590001 |
| in vitro inhibition of dengue virus entry by p-sulfoxy-cinnamic acid and structurally related combinatorial chemistries. | the anti-adhesive compound p-sulfoxy-cinnamic acid, zosteric acid (za), is derived from the temperate marine eelgrass, zostera marina. za and five combinatorial chemistries based on za were evaluated for their anti-viral properties against dengue virus in a focus forming unit reduction assay. none of the compounds showed evidence of toxicity to the monkey kidney cell line llcmk-2 over the concentration ranges tested. za showed a modest ic(50) of approximately 2.3 mm against denv-2. three other c ... | 2008 | 18606464 |
| inhibition of fungal spore adhesion by zosteric acid as the basis for a novel, nontoxic crop protection technology. | abstract to explore the potential for nontoxic crop protection technologies based on the inhibition of fungal spore adhesion, we have tested the effect of synthetic zosteric acid (p-(sulfo-oxy) cinnamic acid), a naturally occurring phenolic acid in eelgrass (zostera marina l.) plants, on spore adhesion and infection in two pathosystems: rice blast caused by magnaporthe grisea and bean anthracnose caused by colletotrichum lindemuthianum. we have shown that zosteric acid inhibits spore adhesion to ... | 2002 | 18942950 |
| an economical non-destructive method for estimating eelgrass, zostera marina (potamogetonaceae) leaf growth rates: formal development and use in northwestern baja california. | seagrass beds provide much of the primary production in estuaries; host many fishes and fish larvae, and abate erosion. the present study presents original analytical methods for estimating mean leaf-growth rates of eelgrass (zostera marina). the method was calibrated by using data collected in a z. marina meadow at punta banda estuary in baja california, mexico. the analytical assessments were based on measurements of leaf length and standard regression procedures. we present a detailed explana ... | 2008 | 19419023 |
| mortality rate estimation for eelgrass zostera marina (potamogetonaceae) using projections from leslie matrices. | the main goal of this study is to provide estimations of mean mortality rate of vegetative shoots of the seagrass zostera marina in a meadow near ensenada baja california, using a technique that minimizes destructive sampling. using cohorts and leslie matrices, three life tables were constructed, each representing a season within the period of monthly sampling (april 1999 to april 2000). ages for the cohorts were established in terms of plastochrone interval (pi). the matrices were projected thr ... | 2008 | 19419024 |
| divergence in host use ability of a marine herbivore from two habitat types. | we studied ecological divergence of host use ability in a generalist marine herbivore living in two distinct host plant assemblages. we collected idotea balthica isopods from three populations dominated by the brown alga fucus vesiculosus and three dominated by the seagrass zostera marina. in two reciprocal common garden feeding experiments for adult and laboratory-born juvenile isopods, we found that isopods from both assemblages performed better with their sympatric dominant host species than ... | 2009 | 19500204 |
| granulosicoccus coccoides sp. nov., isolated from leaves of seagrass (zostera marina). | a non-pigmented, motile, gram-negative bacterium, strain z 271(t), was isolated from the surface of leaves of the seagrass zostera marina which was collected in troitza bay (sea of japan, pacific ocean). the new isolate grew between 5 degrees c and 28 degrees c and was slightly halophilic, tolerating environments containing up to 5 % (w/v) nacl. strain z 271(t) was able to degrade tweens 20, 40 and 80 and partially degrade gelatin, but was unable to degrade casein. phosphatidylethanolamine (36.9 ... | 2010 | 19661498 |
| endoglucanase-producing micromycetes capable of plant wastes degrading. | the screening study of endoglucanase producers among 58 strains 28 species 12 genera of mesophilous and thermotolerant micromycetes has been performed. approximately 20% of investigated strains of micromycetes showed the highest endoglucanase activities (hydrolysis rates reached 0.40-0.57) during their submerged cultivation with different cellulose-containing subsrates. such plant wastes as rye straw, wheat bran, husk of sunflower seeds, leaves and stems of zostera marina were optimal for fungal ... | 2009 | 20387653 |
| structural characterization and cytotoxic properties of an apiose-rich pectic polysaccharide obtained from the cell wall of the marine phanerogam zostera marina. | zosterin, an apiose-rich pectic polysaccharide, was extracted and purified from the sea grass zostera marina. structural studies conducted by gas chromatography and nmr spectroscopy on a purified zosterin fraction (agu) revealed a typical apiogalacturonan structure comprising an alpha-1,4-d-galactopyranosyluronan backbone substituted by 1,2-linked apiofuranose oligosaccharides and single apiose residues. the average molecular mass of agu was estimated to be about 4100 da with a low polydispersit ... | 2010 | 20465284 |
| the concept of population in clonal organisms: mosaics of temporally colonized patches are forming highly diverse meadows of zostera marina in brittany. | seagrasses structure some of the world's key coastal ecosystems presently in decline due to human activities and global change. the ability to cope with environmental changes and the possibilities for shifts in distribution range depend largely on their evolvability and dispersal potential. as large-scale data usually show strong genetic structure for seagrasses, finer-grained work is needed to understand the local processes of dispersal, recruitment and colonization that could explain the appar ... | 2010 | 20465589 |
| seasonal changes in abundance of ammonia-oxidizing archaea and ammonia-oxidizing bacteria and their nitrification in sand of an eelgrass zone. | seasonal changes in the abundance of ammonia-oxidizing archaea (aoa) and ammonia-oxidizing bacteria (aob) within the sand of an eelgrass (zostera marina) zone were examined by a quantitative pcr of both crenarchaeotal and betaproteobacterial ammonia monooxygenase alpha subunit (amoa) genes together with temperature and concentrations of ammonium, nitrite, and nitrate from may 2007 to june 2008 at tanoura bay, shizuoka, japan. the abundance of both amoas in the sand between may and june 2007 and ... | 2009 | 21566349 |
| food-web structure of seagrass communities across different spatial scales and human impacts. | seagrass beds provide important habitat for a wide range of marine species but are threatened by multiple human impacts in coastal waters. although seagrass communities have been well-studied in the field, a quantification of their food-web structure and functioning, and how these change across space and human impacts has been lacking. motivated by extensive field surveys and literature information, we analyzed the structural features of food webs associated with zostera marina across 16 study s ... | 2011 | 21811637 |
| [medical and prophylactic properties lipids and antioxidants derived from sea hydrobionts]. | recent researches in the field of studying medical-preventive activity of lipids and natural antioxidants derived from sea hydrobionts at carbohydrate and lipid metabolic imbalances were analyzed. on experimental models of hyperlipidemia and a diabetes the optimum dozes and polyunsaturated fat acids omega-3/omega-6 in structure of phospho- and glycolipids derived from sea macrophytes sargassum pallidum, ulva fenestrata, zostera marina, and also antioxidants-- polyhydroxynaphthoquinone a echinoch ... | 2011 | 21692341 |
| [comparative study of antiviral activity of luteolin and 7,3'-disulfate luteolin]. | antiviral activity of 7,3'-disulfate luteolin, extracted from zostera marina was studied on an experimental model of tick-borne encephalitis (tbe) in vivo and in vitro. the drug increased the survival of the experimental mice infected with tbe virus and prolonged their lifespan. it was shown that 7,3'-disulfate luteolin reduced the virus accumulation in the spev cells by 2.0-4.0 lg tcid50/ml. | 2011 | 22856150 |
| seagrass (zostera marina) colonization promotes the accumulation of diazotrophic bacteria and alters the relative abundances of specific bacterial lineages involved in benthic carbon and sulfur cycling. | seagrass colonization changes the chemistry and biogeochemical cycles mediated by microbes in coastal sediments. in this study, we molecularly characterized the diazotrophic assemblages and entire bacterial community in surface sediments of a zostera marina-colonized coastal lagoon in northern china. higher nitrogenase gene (nifh) copy numbers were detected in the sediments from the vegetated region than in the sediments from the unvegetated region nearby. the nifh phylotypes detected were mostl ... | 2015 | 26209674 |
| attached bacterial populations shared by four species of aquatic angiosperms. | symbiotic relationships between microbes and plants are common and well studied in terrestrial ecosystems, but little is known about such relationships in aquatic environments. we compared the phylogenetic diversities of leaf- and root-attached bacteria from four species of aquatic angiosperms using denaturing gradient gel electrophoresis (dgge) and dna sequencing of pcr-amplified 16s rrna genes. plants were collected from three beds in chesapeake bay at sites characterized as freshwater (vallis ... | 2008 | 18676705 |
| rosmarinic acid from eelgrass shows nematicidal and antibacterial activities against pine wood nematode and its carrying bacteria. | pine wilt disease (pwd), a destructive disease for pine trees, is caused by the pine wood nematode (pwn), bursaphelenchus xylophilus and additional bacteria. in this study, extracts of zostera marina showed a high nematicidal activity against pwn and some of the bacteria that it carries. light yellow crystals were obtained from extracts of z. marina through solvent extraction, followed by chromatography on ab-8 resin and crystallization. the nmr and hplc analysis showed that the isolated compoun ... | 2012 | 23201594 |
| enterococcus growth on eelgrass (zostera marina); implications for water quality. | enterococci are fecal indicator bacteria used to monitor fecal pollution of recreational waters. when enterococci levels exceed health standards, fecal pollution is assumed as the cause. enterococci growing on plants limit their usefulness as fecal indicator bacteria. here we examined enterococcal growth on eelgrass in mission bay, ca where enterococci levels have exceeded water quality thresholds. a total of 69 eelgrass samples were collected from six sites, shaken to remove enterococci attache ... | 2016 | 26976844 |
| sulfation mediates activity of zosteric acid against biofilm formation. | zosteric acid (za), a metabolite from the marine sea grass zostera marina, has attracted much attention due to its attributed antifouling (af) activity. however, recent results on dynamic transformations of aromatic sulfates in marine phototrophic organisms suggest potential enzymatic desulfation of metabolites like za. the activity of za was thus re-investigated using biofilm assays and simultaneous analytical monitoring by liquid chromatography/mass spectrometry (lc/ms). comparison of za and i ... | 2015 | 25915112 |
| on the possibility of lipid-induced regulation of conformation and immunogenicity of influenza a virus h1/n1 hemagglutinin as antigen of ti-complexes. | the tubular immunostimulating complex (ti-complex) consisting of cucumarioside a2-2, cholesterol and monogalactosyldiacylglycerol (mgdg) from marine macrophytes is the perspective antigen delivery system for subunit vaccines. mgdg is a lipid matrix for the protein antigen incorporated in the ti-complex. the aim of the present work was to study the influence of mgdgs from different macrophytes on conformation and immunogenicity of the secreted recombinant uncleaved hemagglutinin monomer (ha0s) of ... | 2014 | 25060667 |
| draft genome sequence of pseudoalteromonas tetraodonis strain ucd-sed8 (phylum gammaproteobacteria). | here, we present the draft genome sequence of pseudoalteromonas tetraodonis ucd-sed8, a marine bacterium normally associated with the production of tetrodotoxin in pufferfish. this strain was isolated from sediment samples surrounding zostera marina roots collected from bodega marine, california. the assembly consists of 4,017,727 bp contained in 35 contigs. | 2015 | 26543114 |
| production of 16.5% v/v ethanol from seagrass seeds. | ethanol fermentation on seeds of seagrass zostera marina was studied. the seeds were collected from the annual plant colony of z. marina at hinase bay, okayama. the seeds contained 83.5% carbohydrates including 48.1% crude starch on a dry weight basis, which is comparable to cereals such as wheat flour and corns. the seeds were saccharified with glucoamylase (50°c, 96 h) and 103.4 g/l concentration of glucose juice was obtained. the glucose juice was further fermented (23°c-35°c, 15 days) with s ... | 2014 | 24969514 |
| draft genome sequence of tenacibaculum soleae ucd-kl19. | here, we present the draft genome sequence of tenacibaculum soleae strain ucd-kl19. the assembly contains 3,012,701 bp in 46 contigs. this strain was isolated from a seagrass leaf (zostera marina) collected from bodega bay, ca, as a part of an undergraduate student research project on isolating bacteria from seagrass. | 2016 | 27738035 |
| draft genome sequences of two vibrio splendidus strains, isolated from seagrass sediment. | here, we present the draft genome sequences of vibrio splendidus ucd-sed7 and ucd-sed10 (phylum proteobacteria). these strains were isolated from sediment surrounding zostera marina roots near the uc davis bodega marine laboratory (bodega, bay, california). these assemblies contain 5,334,236 bp and 5,904,824 bp, respectively. | 2016 | 26893436 |
| the influence of monogalactosyldiacylglycerols from different marine macrophytes on immunogenicity and conformation of protein antigen of tubular immunostimulating complex. | the tubular immunostimulating complex (ti-complex) is a novel nanoparticulate antigen delivery system consisting of cholesterol, triterpene glycoside cucumarioside a(2)-2, and glycolipid monogalactosyldiacylglycerol (mgdg) isolated from marine macrophytes. mgdg is crucial for the formation of a lipid matrix for the protein antigen incorporated in ti-complexes. fatty acid composition and the physical state of this glycolipid depend on the taxonomic position of marine macrophytes. therefore, the a ... | 2012 | 22269933 |
| eelgrass detritus as a food source for the sea cucumber apostichopus japonicus selenka (echinidermata: holothuroidea) in coastal waters of north china: an experimental study in flow-through systems. | eelgrass ecosystems have a wide variety of ecological functions in which living tissues and detritus may be a food source for many marine animals. in this study, we conducted a laboratory simulating experiment to understand the trophic relationship between the eelgrass zostera marina l and the sea cucumber apostichopus japonicus. a mixture of decaying eelgrass debris and seafloor surface muddy sediments was used as food to feed a. japonicus, and then specific growth rates (sgr) and fecal product ... | 2013 | 23505480 |
| a snare-like superfamily protein sbslsp from the halophyte salicornia brachiata confers salt and drought tolerance by maintaining membrane stability, k(+)/na(+) ratio, and antioxidant machinery. | about 1000 salt-responsive ests were identified from an extreme halophyte salicornia brachiata. among these, a novel salt-inducible gene sbslsp (salicornia brachiata snare-like superfamily protein), showed up-regulation upon salinity and dehydration stress. the presence of cis-regulatory motifs related to abiotic stress in the putative promoter region supports our finding that sbslsp gene is inducible by abiotic stress. the sbslsp protein showed a high sequence identity to hypothetical/uncharact ... | 2016 | 27313584 |
| comparative analysis of expressed sequence tag (est) libraries in the seagrass zostera marina subjected to temperature stress. | global warming is associated with increasing stress and mortality on temperate seagrass beds, in particular during periods of high sea surface temperatures during summer months, adding to existing anthropogenic impacts, such as eutrophication and habitat destruction. we compare several expressed sequence tag (est) in the ecologically important seagrass zostera marina (eelgrass) to elucidate the molecular genetic basis of adaptation to environmental extremes. we compared the tentative unigene (tu ... | 2017 | 18239962 |
| the wide distribution of endornaviruses, large double-stranded rna replicons with plasmid-like properties. | the international committee on taxonomy of viruses (ictv) recently accepted endornavirus as a new genus of plant dsrna virus. we have determined the partial nucleotide sequences of the rna-dependent rna polymerase regions from the large dsrnas (about 14 kbp) isolated from barley (hordeum vulgare), kidney bean (phaseolus vulgaris), melon (cucumis melo), bottle gourd (lagenaria siceraria), malabar spinach (basella alba), seagrass (zostera marina), and the fungus helicobasidium mompa. phylogenetic ... | 2006 | 16341944 |
| [habitat use patterns of the black brant branta bernicla nigricans (anseriformes: anatidae) in natural and artificial areas of guerrero negro, baja california sur, mexico]. | the black brant is a common inhabitant of the western artic american tundra, which migrates to southern pacific coasts during the winter season. approximately, 31000 birds (31%) constitute the mexican population of brants at guerrero negro, ojo de liebre, and exportadora de sal lagoon complex; nevertheless, there is little information about the distribution patterns and zone usage. at guerrero negro lagoon (gnl), ojo de liebre lagoon (oll, both natural sites), and at exportadora de sal (essa, ar ... | 2013 | 23885600 |
| predicted eelgrass response to sea level rise and its availability to foraging black brant in pacific coast estuaries. | managers need to predict how animals will respond to habitat redistributions caused by climate change. our objective was to model the effects of sea level rise on total eelgrass (zostera marina) habitat area and on the amount of that area that is accessible to brant geese (branta bernicla), specialist grazers of eelgrass. digital elevation models were developed for seven estuaries from alaska, washington, california (usa), and mexico. scenarios of future total eelgrass area were derived from com ... | 2012 | 23092012 |
| variability in the chemistry of estuarine plants and its effect on feeding by canada geese. | we investigated the influence of interspecific and seasonal variations in plant chemistry on food choices by adult and gosling canada geese, branta canadensis, on cape cod, massachusetts. the geese fed primarily on the abundant marsh grasses, spartina spp., and rushes, juncus gerardi, early in the growing season and switched to a greater dependence on eelgrass, zostera marina, later. forbs were generally avoided all season even when growing within patches of abundant species. the avoidance of fo ... | 1987 | 28311419 |
| trace element exposure of whooper swans (cygnus cygnus) wintering in a marine lagoon (swan lake), northern china. | trace element poisoning remains a great threat to various waterfowl and waterbirds throughout the world. in this study, we determined the trace element exposure of herbivorous whooper swans (cygnus cygnus) wintering in swan lake (rongcheng), an important swan protection area in northern china. a total of 70 samples including abiotic factors (seawater, sediments), food sources (seagrass, macroalgae), feathers and feces of whooper swans were collected from the marine lagoon during the winters of 2 ... | 2017 | 28392089 |
| trophic cascades on the edge: fostering seagrass resilience via a novel pathway. | despite widespread degradation, some coastal ecosystems display remarkable resilience. for seagrasses, a century-old paradigm has implicated macroalgal blooms stimulated by anthropogenic nutrient, loading as a primary driver of seagrass decline, yet relatively little attention has been given to drivers of seagrass resilience. in elkhorn slough, ca, an estuarine system characterized by extreme anthropogenic nutrient loading and macroalgal (ulva spp.) blooms, seagrass (zostera marina) beds have re ... | 2016 | 27167224 |
| recovery of a top predator mediates negative eutrophic effects on seagrass. | a fundamental goal of the study of ecology is to determine the drivers of habitat-forming vegetation, with much emphasis given to the relative importance to vegetation of "bottom-up" forces such as the role of nutrients and "top-down" forces such as the influence of herbivores and their predators. for coastal vegetation (e.g., kelp, seagrass, marsh, and mangroves) it has been well demonstrated that alterations to bottom-up forcing can cause major disturbances leading to loss of dominant vegetati ... | 2013 | 23983266 |
| local adaptation in adult feeding preference and juvenile performance in the generalist herbivore idotea balthica. | populations can respond to environmental heterogeneity by genetic adaptation to local conditions. evidence for local adaptation in herbivores with relatively broad host breadth is scarce, either because generalists rarely locally adapt or because fewer studies have tested for local adaptation. the marine isopod idotea balthica, a small (<3 cm) generalist herbivore common to estuaries of the northwestern atlantic, is found on multiple macroalgae and sea grasses north of 42°n, while more southerly ... | 2012 | 22451011 |
| draft genome sequences of pseudomonas moraviensis ucd-kl30, vibrio ostreicida ucd-kl16, colwellia sp. strain ucd-kl20, shewanella sp. strain ucd-kl12, and shewanella sp. strain ucd-kl21, isolated from seagrass. | here, we present the draft genome sequences for five bacterial strains. these strains were all isolated from seagrass (zostera marina) collected from bodega bay, ca, as a part of an undergraduate research project focused on seagrass-associated microbes. | 2017 | 28360178 |
| copper treatment during storage reduces phytophthora and halophytophthora infection of zostera marina seeds used for restoration. | restoration is increasingly considered an essential tool to halt and reverse the rapid decline of vital coastal ecosystems dominated by habitat-forming foundation species such as seagrasses. however, two recently discovered pathogens of marine plants, phytophthora gemini and halophytophthora sp. zostera, can seriously hamper restoration efforts by dramatically reducing seed germination. here, we report on a novel method that strongly reduces phytophthora and halophytophthora infection of eelgras ... | 2017 | 28225072 |
| influence of different types of sessile epibionts on the community structure of mobile invertebrates in an eelgrass bed. | eelgrass (zostera marina) beds are known to have high ecological and economical values within coastal ecosystems of the temperate northern hemisphere although their biodiversity and functions varied greatly from sites to sites. the variation in the biomass, abundance and diversity of mobile invertebrates in eelgrass beds has been examined in relation to various abiotic and biotic factors, such as water temperature, salinity, eelgrass biomass and epiphytic microalgae presence. however, the import ... | 2017 | 28168116 |
| marine phytophthora species can hamper conservation and restoration of vegetated coastal ecosystems. | phytophthora species are potent pathogens that can devastate terrestrial plants, causing billions of dollars of damage yearly to agricultural crops and harming fragile ecosystems worldwide. yet, virtually nothing is known about the distribution and pathogenicity of their marine relatives. this is surprising, as marine plants form vital habitats in coastal zones worldwide (i.e. mangrove forests, salt marshes, seagrass beds), and disease may be an important bottleneck for the conservation and rest ... | 2016 | 27559058 |
| draft genome sequence of cobetia sp. ucd-24c, isolated from roots and leaves of the seagrass zostera marina. | here, we present the 4,230,758-bp draft genome for cobetia sp. ucd-24c. this strain was isolated from zostera marina roots collected in woods hole, massachusetts, usa. | 2016 | 26966219 |
| draft genome sequences of two pseudoalteromonas strains isolated from roots and leaf blades of the seagrass zostera marina. | here, we present the draft genome sequences for pseudoalteromonas sp. strain ucd-33c and pseudoalteromonas lipolytica ucd-48b. pseudoalteromonas sp. ucd-33c was isolated from zostera marina roots and p. lipolytica ucd-48b from z. marina leaf blades, both collected in woods hole, ma. these assemblies contain 4,479,285 bp and 4,592,435 bp, respectively. | 2016 | 26893412 |
| cribrilina mutabilis n. sp., an eelgrass-associated bryozoan (gymnolaemata: cheilostomata) with large variationin zooid morphology related to life history. | we describe the cribrimorph cheilostome bryozoan cribrilina mutabilis n. sp., which we detected as an epibiont on eelgrass (zostera marina) at akkeshi, hokkaido, northern japan. this species shows three distinct zooid types during summer: the r (rib), i (intermediate), and s (shield) types. evidence indicates that zooids commit to development as a given type, rather than transform from one type to another with age. differences in the frontal spinocyst among the types appear to be mediated by a s ... | 2015 | 26428727 |
| phosphorus in seagull colonies and the effect on the habitats. the case of yellow-legged gulls (larus michahellis) in the atlantic islands national park (galicia-nw spain). | during the period 1980-2000, the yellow-legged gull population underwent exponential growth due to an increase in the availability of anthropogenic food resources. the aim of this study was to highlight the effect of the gull colonies on the p soil cycle and the associated effects on coastal ecosystems. samples of soil, water and faecal material were collected in a colony of yellow-legged gulls (cíes islands) and in a control area. four sampling plots were installed in the study areas, and sampl ... | 2015 | 26081740 |
| indirect effects of predators control herbivore richness and abundance in a benthic eelgrass (zostera marina) mesograzer community. | herbivore communities can be sensitive to changes in predator pressure (top-down effects) and resource availability (bottom-up effects) in a wide range of systems. however, it remains unclear whether such top-down and bottom-up effects reflect direct impacts of predators and/or resources on herbivores, or are indirect, reflecting altered interactions among herbivore species. we quantified direct and indirect effects of bottom-up and top-down processes on an eelgrass (zostera marina) herbivore as ... | 2015 | 25660764 |
| phytophthora gemini sp. nov., a new species isolated from the halophilic plant zostera marina in the netherlands. | eight strains belonging to the oomycete genus phytophthora were isolated from zostera marina (seagrass) in the netherlands over the past 25 y. based on morphology, isozymes, temperature-growth relationships and its sequences, these strains were found to belong to two different phytophthora species. five strains, four of them isolated from rotting seeds and one isolated from decaying plants, could not be assigned to a known species and hence belong to a new species for which we propose the name p ... | 2011 | 21802052 |
| fungi and bacteria in or on leaves of eelgrass (zostera marina l.) from chesapeake bay. | samples of green and brown leaves of eelgrass (zostera marina l.) were incubated in seawater without an additional carbon source. parallel leaf samples were used for acridine orange bacterial counting and water-soluble aniline blue estimation of fungal biovolume. the incubations produced no evidence that there is an eelgrass counterpart for the chytridialean symbiont which is very common in turtlegrass (thalassia testudinum könig). sterile mycelium (i.e., living mycelium without identifiable pro ... | 1981 | 16345773 |