Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1111/j.1574-6941.2006.00265.x |
Three distinct clades of cultured heterocystous cyanobacteria constitute the dominant N-2-fixing members of biological soil crusts of the Colorado Plateau, USA | |
Yeager, Chris M.; Kornosky, Jennifer L.; Morgan, Rachael E.; Cain, Elizabeth C.; Garcia-Pichel, Ferran; Housman, David C.; Belnap, Jayne; Kuske, Cheryl R. | |
通讯作者 | Kuske, Cheryl R. |
来源期刊 | FEMS MICROBIOLOGY ECOLOGY
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ISSN | 0168-6496 |
出版年 | 2007 |
卷号 | 60期号:1页码:85-97 |
英文摘要 | The identity of the numerically dominant N-2-fixing bacteria in biological soil crusts of the Colorado Plateau region and two outlying areas was determined using multiple approaches, to link the environmental diversity of nifH gene sequences to cultured bacterial isolates from the regions. Of the nifH sequence-types detected in soil crusts of the Colorado Plateau, 89% (421/473) were most closely related to nifH signature sequences from cyanobacteria of the order Nostocales. N-2-fixing cyanobacterial strains were cultured from crusts and their morphotypes, 16S rRNA gene and nifH gene sequences were characterized. The numerically dominant diazotrophs in the Colorado Plateau crusts fell within three clades of heterocystous cyanobacteria. Two clades are well-represented by phylogenetically and morphologically coherent strains, corresponding to the descriptions of Nostoc commune and Scytonema hyalinum, which are widely recognized as important N-2-fixing components of soil crusts. A third, previously-overlooked clade was represented by a phylogenetically coherent but morphologically diverse group of strains that encompass the morphogenera Tolypothrix and Spirirestis. Many of the strains in each of these groups contained at least two nifH copies that represent different clusters in the nifH environmental survey. |
英文关键词 | cyanobacteria nitrogen fixation nifH biological soil crust Nostoc Scytonema |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000244883800009 |
WOS关键词 | RIBOSOMAL-RNA GENE ; NITROGEN-FIXATION ; MICROCOLEUS-CHTHONOPLASTES ; MICROBIAL DIVERSITY ; COMMUNITY STRUCTURE ; SEQUENCE ALIGNMENT ; DESERT CRUSTS ; LAKE BONNEY ; ICE COVER ; SP-NOV |
WOS类目 | Microbiology |
WOS研究方向 | Microbiology |
来源机构 | Arizona State University |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/154202 |
作者单位 | (1)Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA;(2)Arizona State Univ, Sch Life Sci, Tempe, AZ USA |
推荐引用方式 GB/T 7714 | Yeager, Chris M.,Kornosky, Jennifer L.,Morgan, Rachael E.,et al. Three distinct clades of cultured heterocystous cyanobacteria constitute the dominant N-2-fixing members of biological soil crusts of the Colorado Plateau, USA[J]. Arizona State University,2007,60(1):85-97. |
APA | Yeager, Chris M..,Kornosky, Jennifer L..,Morgan, Rachael E..,Cain, Elizabeth C..,Garcia-Pichel, Ferran.,...&Kuske, Cheryl R..(2007).Three distinct clades of cultured heterocystous cyanobacteria constitute the dominant N-2-fixing members of biological soil crusts of the Colorado Plateau, USA.FEMS MICROBIOLOGY ECOLOGY,60(1),85-97. |
MLA | Yeager, Chris M.,et al."Three distinct clades of cultured heterocystous cyanobacteria constitute the dominant N-2-fixing members of biological soil crusts of the Colorado Plateau, USA".FEMS MICROBIOLOGY ECOLOGY 60.1(2007):85-97. |
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