Mikrobiologiia最新文献_第4页

Microbial Community Associated with Thioploca sp. Sheaths in the Area of the Posolski Bank Methane Seep, Southern Baikal. 南贝加尔湖Posolski岸甲烷渗漏区与硫蚤鞘相关的微生物群落

Mikrobiologiia Pub Date : 2016-09-01

S M Chernitsyna, I A Khal'zov, T A Khanaeva, I V Morozov, I V Klimenkov, N V Pimenov, T I Zemskayal

{"title":"Microbial Community Associated with Thioploca sp. Sheaths in the Area of the Posolski Bank Methane Seep, Southern Baikal.","authors":"S M Chernitsyna, I A Khal'zov, T A Khanaeva, I V Morozov, I V Klimenkov, N V Pimenov, T I Zemskayal","doi":"","DOIUrl":"","url":null,"abstract":"Bacterial mats formed by a colorless sulfur bacterium Thioploca sp. in the area of the Posolski Bank cold methane seep (southern Baikal) were -studied using electron microscopy and phylogenetic analysis. Morphologically the bacteria were identified as Thioploca ingrica.- Confocal microscopy of DAPI-stained samples revealed numerous rod-shaped, filamentous, and spiral microorganisms in the sheaths, as well as in- side and between the trichomes. Transmission electron microscopy revealed nonvacuolated bacteria and small cells-without cell envelopes within the sheath. Bacteria with pronounced intracytoplasmic membranes characteristic; of type I methanotrophs were observed at the outer side of the sheath. Based on analysis of the 16S rRNA gene sequences, the following phyla were idenified in the sheath community: Bacteroidetes, Nitro- spira, Chloroflexi, Planctomycetes, Verrucomicrobia,'y-, and 6-Proteobacteria, Euryarchaeota, Crenarchaeota, and Thaumarchaeota, as well as anammox bacteria. A hypothetical scheme of matter flows in the Lake Baikal bacterial mats was proposed based on the data on metabolism of the cultured homologues.","PeriodicalId":18732,"journal":{"name":"Mikrobiologiia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35763002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Emended Description of Methylovorus glucosotrophus Govorukhina and Trotsenko 1991. Govorukhina和Trotsenko的甲基嗜糖蛋毒的修订描述1991。

Mikrobiologiia Pub Date : 2016-09-01

N V Doronina, E N Kaparulina, Yu A Trotsenko

引用次数: 0

[Modeling the Propagation of Microbial Cells and Phage Particles from the Sites of Permafrost Thawing.] [模拟永久冻土融化处微生物细胞和噬菌体颗粒的繁殖。]

Mikrobiologiia Pub Date : 2016-09-01

D A Skladnev, A L Mulyukin, S N Filippoval, E E Kulikov, M A Letaroval, E A Yuzbasheva, E A Karnysheva, A V Brushkov, V F Gal'chenko

引用次数: 0

Phylogenetic and Functional Prokaryotic Diversity in the Hoito-Gol Mesothermal Mineral Spring (Eastern Savan Mountains. Buryat Renuhlie). 萨凡山脉东部Hoito-Gol中温矿泉的系统发育与功能原核生物多样性。布里亚特人Renuhlie)。

Mikrobiologiia Pub Date : 2016-09-01

E S Kashkak, N L Bel'kova, E V Danilova, O P Dagurova, B B Namsaraev, V M Gorlenko

{"title":"Phylogenetic and Functional Prokaryotic Diversity in the Hoito-Gol Mesothermal Mineral Spring (Eastern Savan Mountains. Buryat Renuhlie).","authors":"E S Kashkak, N L Bel'kova, E V Danilova, O P Dagurova, B B Namsaraev, V M Gorlenko","doi":"","DOIUrl":"","url":null,"abstract":"High-throughput sequencing was used for comparative analysis of microbial communities of the water and mat from the Hoito-Gol mesothermal mineral sulfide spring (Eastern Sayan Mountains, Buryat Republic). Activity of microbial communities was determined. While both spring biotopes were dominated by members of three bacterial phyla, Proteobacteria, Bacteroidetes, and Firmicutes, they differed drastically in the composition of predominant phylotypes (at the genus level). In the water, the organisms wide spread in aquatic'environments were predominant, mostly aerobic chemoorganotrophs of the generaAcinetobacter, Pe- dobacter, and Flavobacterium. In the microbial mat,;the organisms actively involved in the sulfur cycle predominated, including sulfur-reducing bacteria Sulfurospirillum, sulfate-reducing deltaproteobacteria, sulfur- oxidizing chemoautotrophic bacteria, anoxygenic phototrophic bacteria of,the phyla Chloroflexi and Chloro- bi, as well as purple bacteria belonging to the Q-, P--, and y-Proteobacteria. Microbial mats of the spring exhibited higher phylogenetic diversity compared to high-temperature mats containing photosynthetic microorganisms.","PeriodicalId":18732,"journal":{"name":"Mikrobiologiia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35763005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

[Not Available.] (不可用)

Mikrobiologiia Pub Date : 2016-09-01

引用次数: 0

Microbial Community Composition and Methanotroph Diversity of a Subarctic Wetland in Russia. 俄罗斯亚北极湿地微生物群落组成及甲烷养分多样性

Mikrobiologiia Pub Date : 2016-09-01

O V Danilova, S E Belova, I V Gagarinova, S N Dedysh

{"title":"Microbial Community Composition and Methanotroph Diversity of a Subarctic Wetland in Russia.","authors":"O V Danilova, S E Belova, I V Gagarinova, S N Dedysh","doi":"","DOIUrl":"","url":null,"abstract":"This study assessed the microbial diversity, activity, and composition of methane-oxidizing communities of a subarctic wetland in Russia,with mosaic cover of Sphagnum mosses and lichens of the genera Cladonia and Cetraria. Potential methane-oxidizing activity of peat sampled from lichen-dominated wetland sites was higher than that in the sites dominated by Sphagnum mosses. In peat from lichendominated sites, major bacterial groups identified by high-throughput sequencing of the 16S rRNA genes were the Acidobacteria (35.4-41.2% of total 16S rRNA gene reads), Alphaproteobacteria (19.1-24.2%), Gammaproteobacteria (7.9-11.1%), Actinobacteria (5.5-13.2%), Planctomycetes (7.2-9.5%), and Verrucomicrobia (5.1-9.5%). The distinctive feature of this community was high proportion of Subdivision 2 Acidobacteria, which are not char- acteristic for boreal Sphagnum peat bogs. Methanotrophic community composition was determined by mo- lecular analysis of the pmoA gene encoding particulate methane monooxygenase. Most (-80%) of all pmoA gene fragments revealed in peat from lichen-dominated sites belonged to the phylogenetic lineage represented by a microaerobic spiral-shaped methanotroph, \"Candidatus Methylospira mobilis.\" Members of the genus Methylocystis, which are typical inhabitants of boreal Sphagnum peat bogs, represented only a minor group of indigenous methanotrophs. The specific feature of a methanotrophic community in peat from lichen-dominated sites was the presence of uncultivated USCa (Upland Soil Cluster alpha) methanotrophs, which are typical for acidic upland soils showing atmospheric methane oxidation. The methanotrophic community composition in lichen-dominated sites of a tundra wetland, therefore, was markedly different from that in bo- real Sphagnum peat bogs.","PeriodicalId":18732,"journal":{"name":"Mikrobiologiia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35763004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Formation of a Subunit Form of the Core Light-Harvesting Complex from Sulfur Purple Bacteria Ectothiorhodospira haloalkaliphila with Different Carotenoid Composition. 不同类胡萝卜素组成的硫紫细菌Ectothiorhodospira haloalkaliphila核心光收集复合物亚基形式的形成

Mikrobiologiia Pub Date : 2016-09-01

A A Solov'ev, A A Ashikhmin, A A Moskalenko

引用次数: 0

[Diversity and Physiological and Biochemical Properties of Heterotrophic Bacteria. Isolated from Lake Baikal Neuston.] 异养细菌的多样性及其生理生化特性。孤立于贝加尔湖纽斯顿。

Mikrobiologiia Pub Date : 2016-09-01

A D Galach'yants, N L Bel'kova, E V Sukhanova, V A Romanovskaya, G V Gladka, E D Bedoshvili, V V Parfenova

引用次数: 0

Succession Processes in the Anoxygenic Phototrophic Bacterial Community in Lake Kislo-Sladkoe (Kandalaksha Bay, White Sea). 白海Kandalaksha湾Kislo-Sladkoe湖缺氧光养细菌群落演替过程

Mikrobiologiia Pub Date : 2016-09-01

O N Lunina, A S Savvichev, E D Krasnova, N M Kokryatskaya, E F Veslopolova, B B Kuznetsov, V M Gorlenko

{"title":"Succession Processes in the Anoxygenic Phototrophic Bacterial Community in Lake Kislo-Sladkoe (Kandalaksha Bay, White Sea).","authors":"O N Lunina, A S Savvichev, E D Krasnova, N M Kokryatskaya, E F Veslopolova, B B Kuznetsov, V M Gorlenko","doi":"","DOIUrl":"","url":null,"abstract":"The community of anoxygenic phototrophic bacteria (APB) in the water column of Lake Kislo- Sladkoe (Kandalaksha Bay, White Sea), which has recently become separated from the sea, was investigated in March-April 2012, March-April 2013, and in September 2013. The lake, which was previously considered meromictic, was in fact mixed and was strongly affected by the sea. In winter the lake is sometimes washed off with seawater, and this together with the seasonal cycles of succession processes determines the succession of the community. The consequences of the mixing in autumn 2011 could be observed in the APB community as late as autumn 2013. Green-colored green sulfur bacteria (GSB) usually predominated in the chemocline. In winter 2013 stagnation resulted in turbidity of water under the ice, which was responsible for both predom- inance of the brown GS B forms and the changes ratio of the species of purple sulfur bacteria (PS B) in anoxic water layers. Production of anoxygenic photosynthesis in the lake was at least 240 mg C m-2 day-- in September and 0-20 mg C m-2 day- in March-April, which corresponded to 40 and 69%, respectively, of oxygenic photosynthesis. Okenone-containing purple sulfur bacteria, strain TcakPS12 were isolated in 2012 from lake water. The ells of this strain form filaments of not separated cells. Strain TcakPS12 exhibited 98% similarity with the type strains of Thiocapsapendens DSM.236 and Thiocapsa bogorovii BBS, as well as with the strains AmPS10 and TcyrPS 10, which were isolated from Lake Kislo-Sladkoe in 2010.","PeriodicalId":18732,"journal":{"name":"Mikrobiologiia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35763003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

[Relations between Bacterioplankton, Heterotrophic Nanoflagellates, and Virioplankton in the Littoral Zone of a LarRe Plain Reservoir:. ImDact of Bird Colonies.] 浮游细菌、异养纳米鞭毛虫和微浮游生物在LarRe平原水库沿岸区的关系[j]。鸟类群落的影响。]

Mikrobiologiia Pub Date : 2016-09-01

K V Rumyantseva, N G Kosolapova, D B Kosolapov

{"title":"[Relations between Bacterioplankton, Heterotrophic Nanoflagellates, and Virioplankton in the Littoral Zone of a LarRe Plain Reservoir:. ImDact of Bird Colonies.]","authors":"K V Rumyantseva, N G Kosolapova, D B Kosolapov","doi":"","DOIUrl":"","url":null,"abstract":"Interactions of the main components of microbial planktonic food web (bacteria, heterotrophic nanoflagellates, and viruses) were studied in a protected overgrown littoral zone of the Rybinsk Reservoir (Upper Volga).. The effect of bird colonial, settlements (the Laridae family) on these processes was deter- mined. The following systems exhibited significant negative correlations: \"heterotrophic nanoflagellates- large rod-shaped bacteria\" (\"predator-prey\"), \"viruses-bacteriophages-bacterial products\" (\"parasite-. host\") and \"heterotrophic nanoflagellates-viruses-bacteriophages.\" Relations between biotic factors con- trolling bacterial development were more pronounced outside the zone affected by colonial bird settlements. Near the bird colony the role of viruses in mortality of planktonic bacteria increased. Reproduction of bacte- rial cells accelerated in response to the increase in feeding activity of heterotrophic nanoflagellates. Viruses- bacteriophages and heterotrophic nanoflagellates probably eliminate different targets until medium-sized cells become predominant in the bacterial community. Then heterotrophic nanoflagellates consume bacterial cells infected with viruses.","PeriodicalId":18732,"journal":{"name":"Mikrobiologiia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35763008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0