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A genome-wide analysis of the chloroplast NADH dehydrogenase - like genes in zostera marina

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Journal of Oceanology and Limnology 2022年第2期40卷 656-677页

作者： Mingyu MA Mingyu ZHONG Quansheng ZHANG Wei ZHAO Mengxin WANG Chengying LUO Bin XU Ocean School Yantai UniversityYantai 264005China

The chloroplast NADH dehydrogenase-like(NDH)complex,homologous to respiratory complex I,participates in photosystem I cyclic electron flow(PSI-CEF)and chlororespiration in *** analyses indicated that zostera marina,a widely distributed seagrass,has a complete NDH complex,which is rarely observed in marine *** identified all 31 ndh genes necessary for the functional NDH complex,of which ndhB and pnsb3 occurred as duplication *** structural analyses of antiporter-like subunits showed that the long amphipathic helix of NdhF was lost in ***,which could exhibit an alternative mode in the generation of trans-thylakoid proton *** splicing pattern of ndh exhibited tissue-specific patterns and responded to light *** editing in *** presented the ancestral pattern with many of the primitive editing sites and *** partial editing in ndhF reflected the link between light stress and RNA ***,the predominant expression in leaves of most ndh genes suggested that their major function is in *** quantitative real time-PCR results show that the expression of ndh was signifi cantly upregulated in response to light ***,there were two diverse responsive mechanisms of the NDH complex in PSI-CEF and ***,the presence of a complete structure,upregulated gene expression level,and multiple post-transcriptional regulations could provide a molecular basis for the powerful NDH complex and enable *** to maintain eff ective photosynthetic performance.

关键词： zostera marina NADH dehydrogenase-like complex genome-wide analysis profi les of expression

Influences of diel and tidal cycles on fish assemblage in eelgrass(zostera marina) bed of southern Korea during autumn

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Acta Oceanologica Sinica 2018年第4期37卷 40-47页

作者： KWAK Seok Nam PARK Joo Myun IM Seong Oh JAWAD Laith A. Environ-Ecological Engineering Institute Co. Ltd. Busan 48280 Republic of Korea Department of Biological Sciences Macquarie University Sydney NSW 2109 Australia Department of Marine Bioscience Gangneung-Wonju National University Gangneung 25457 Republic of Korea Korea Marine Environment Management Corporation Seou105718 Republic of Korea Flat Bush Manukau Auckland 2016 New Zealand

Short-term tidal and diel variations of autumn fish assemblage in a zostera marina bed were investigated using 3 h interval samplings for 24 h in both spring and neap tide using a small beam trawl.A total of 1 346 fishes belonging to 19 species were collected at spring tide,whereas 1 115 fishes belonging to 17 species were at neap *** common fish species were Nuchequula nuchalis,Acanthogobius flavimanus,Takifugu niphobles,Acentrogobius pflaumii,and Pholis nebulosa with the former three species dominating at spring tide,while the latter two species being abundant at neap *** variation in abundance was significant with higher abundance at night than day,but there were no significant differences between spring and neap tides,and between ebb and flood tides（three-way ANOVAs）.Diel variation in the abundance of fishes may be influenced by tidal range and cycle,and day-night differences of food availability and behaviors of fishes ***-metric multidimensional scaling（n MDS） ordination and analysis of similarity（ANOSIM） results revealed significant differences in species compositions both between day and night,and between spring and neap *** beds are highly productive marine ecosystem,and thus,our results will contribute to conservation of seagrass ecosystem in the study area.

关键词： tidal and diel variations fish assemblage eelgrass zostera marina southern Korea

Identification of Light-Harvesting Chlorophyll a/b-Binding Protein Genes of zostera marina *** Their Expression Under Different Environmental Conditions

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Journal of Ocean University of China 2016年第1期15卷 152-162页

作者： KONG Fanna ZHOU Yang SUN Peipei CAO Min LI Hong MAO Yunxiang College of Marine Life Science Ocean University of China Key Laboratory of Marine Genetics and Breeding of Ministry of Education Ocean University of China

Photosynthesis includes the collection of light and a/b-binding （LHC） proteins. In high plants, the LHC gene family constituting the light-harvesting complex ofphotosystems I and II. the transfer of solar energy using light-harvesting chlorophyll includes LHCA and LHCB sub-families, which encode proteins zostera marina L. is a monocotyledonous angiosperm and inhab- its submerged marine environments rather than land environments. We characterized the Lhca and Lhcb gene families of Z. marina from the expressed sequence tags （EST） database. In total, 13 unigenes were annotated as ZmLhc, 6 in Lhca family and 7 in ZmLhcb family. ZmLHCA and ZmLHCB contained the conservative LHC motifs and amino acid residues binding chlorophyll. The average similarity among mature ZmLHCA and ZmLHCB was 48.91% and 48.66%, respectively, which indicated a high degree of diver- gence within ZmLHChc gene family. The reconstructed phylogenetic tree showed that the tree topology and phylogenetic relation- ship were similar to those reported in other high plants, suggesting that the Lhc genes were highly conservative and the classification of ZmLhc genes was consistent with the evolutionary position of Z. marina. Real-time reverse transcription （RT） PCR analysis showed that different members of ZmLhca and ZmLhcb responded to a stress in different expression patterns. Salinity, temperature, light intensity and light quality may affect the expression of most ZmLhca and ZmLhcb genes. Inorganic carbon concentration and acidity had no obvious effect on ZmLhca and ZmLhcb gene expression, except for ZmLhca6.

关键词： zostera marina light-harvesting chlorophyll a/b-binding protein Lhca gene family Lhcb gene family environment stress response

Antibacterial Activity of Extracts from zostera marina Against Pathogens of Apostichopus japonicus Skin Ulceration Disease

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Journal of Ocean University of China 2010年第1期9卷 68-70页

作者： LIU Yang JIANG Guoliang WU Zhiqiang College of Marine Life Sciences Ocean University of China Qingdao 266003 P. R. China

The purpose of this study was to investigate the antibacterial activity of extracts from zostera marina against the pathogens of Apostichopus japonicus skin ulceration *** 95% ethanol (v/v) solvent was used to extract zostera marina at 50℃,aqueous extract (ZA) showed obvious bacteriostatic effects on the tested bacterial strains (inhibition halo diameters between 8.23 mm and 13.62 mm),whereas the ethyl acetate extract (ZE) was almost *** minimal inhibitory concentration (MIC) of ZA against four pathogens were homogeneous at 12.8 g *** components were analyzed by thin layer chromatography (TLC) assay and six fractions were *** another study,the six fractions showed inhibitory effects against the tested bacteria while their functions seemed to counteract the ZA activity.

关键词： zostera marina Apostichopusjaponicus skin ulceration disease antibacterial activity

Isolation and Identification of Flavonoids Found in zostera marina Collected in Norwegian Coastal Waters

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American Journal of Plant Sciences 2016年第7期7卷 1163-1172页

作者： Kjersti Hasle Enerstvedt Monica Jordheim Øyvind M. Andersen Department of Chemistry University of Bergen Bergen Norway

In extracts of the seagrass zostera marina, collected in coastal waters of West-Norway, fourteen different flavones and high amounts of rosmarinic acid were identified. Five of the flavones were found to be sulphated, among these were luteolin 7,3'-disulphate and chrysoeriol 7-sulphate structures previously not published with complete NMR assignments. Luteolin 7-O-β-(6''-malonyl) glucoside, and two other malonylated flavone compounds occurring in trace amounts, were identified for the first time in Z. marina. The sulphated flavones were fairly stable in slightly acidified (0.1% trifluoroacetic acid) extracts stored for months, however, under more acidic conditions (0.5% trifluoroacetic acid in the extracts) they were susceptible to undergo hydrolyses. When the solvents of purified fractions were removed by rotary evaporation, the sulphated flavones quickly decomposed to their corresponding aglycones due to the increased acid concentrations.

关键词： zostera marina Sulphated Flavones NMR Spectral Data Characterization Stability

Wind-Driven Dynamics of Beach-Cast Wrack in a Tide-Free System

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Open Journal of Marine Science 2014年第2期4卷 68-79页

作者： Sven Hammann Martin Zimmer Christian-Albrechts-Universitat zu Kiel Zoologisches InstitutKielGermany Thünen-Institut für Seefischerei HamburgGermany Paris-Lodron-Universitat Salzburg FB Organismische BiologieAG OkologieBiodiversitat&Evolution der TiereSalzburgAustria

Whereas wrack dynamics on tidally influenced beaches have been studied to some detail, essentially nothing is known about how drift lines in tide-free coastal systems vary in space and time. We provide evidence for high spatial and temporal dynamics of beach-cast wrack on a sand beach in the Western Baltic Sea. Over the course of one year, the amount of weekly deposited macrophyte wrack fluctuated from zero to 3000 g·m-1 shoreline. Wrack mostly accumulated just above the waterline. Part of the beach-cast wrack is frequently re-suspended into coastal water upon extreme high water level events, or wrack patches are translocated landwards by wind-driven changes in water level or along the shoreline by winds. Consequently, the deposited wrack does accumulate, but a steady-state of ca 400 g·m-1 builds up within 2 - 3 weeks. Eelgrass wrack buried in sand decomposed almost twice as fast as on top of the sand or re-suspended in water. Fragmentation of leaves promoted decomposition only when wrack remained on the sand surface. The spatial and temporal distribution of this valuable source of organic matter is unpredictable and depends on wind and wind-driven waves.

关键词： Decomposition Drift Line Spatial Subsidy zostera marina