Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.1038/s41396-020-00781-1 |
| A symbiotic nutrient exchange within the cyanosphere microbiome of the biocrust cyanobacterium,Microcoleus vaginatus | |
| Nelson, Corey; Giraldo-Silva, Ana; Garcia-Pichel, Ferran | |
| 通讯作者 | Garcia-Pichel, F |
| 来源期刊 | ISME JOURNAL
 |
| ISSN | 1751-7362 |
| EISSN | 1751-7370 |
| 英文摘要 | Microcoleus vaginatusplays a prominent role as both primary producer and pioneer in biocrust communities from dryland soils. And yet, it cannot fix dinitrogen, essential in often nitrogen-limited drylands. But a diazotroph-rich "cyanosphere" has been described inM. vaginatus, hinting that there exists a C for N exchange between the photoautotroph and heterotrophic diazotrophs. We provide evidence for this by establishing such a symbiosis in culture and by showing that it is selective and dependent on nitrogen availability. In natural populations, provision of nitrogen resulted in loss of diazotrophs from the cyanosphere ofM. vaginatuscompared to controls, but provision of phosphorus did not. Co-culturing of pedigreed cyanosphere diazotroph isolates with axenicM. vaginatusresulted in copious growth in C and N-free medium, but co-culture with non-cyanosphere diazotrophs or other heterotrophs did not. Unexpectedly, bundle formation inM. vaginatus, diacritical to the genus but not seen in axenic culture, was restored in vitro by imposed nitrogen limitation or, even more strongly, by co-culture with diazotrophic partners, implicating this trait in the symbiosis. Our findings provide direct evidence for a symbiotic relationship betweenM. vaginatusand its cyanosphere and help explain how it can be a global pioneer in spite of its genetic shortcomings. |
| 类型 | Article ; Early Access |
| 语种 | 英语 |
| 收录类别 | SCI-E |
| WOS记录号 | WOS:000572303200001 |
| WOS关键词 | BIOLOGICAL SOIL CRUSTS ; COLORADO PLATEAU ; COMMUNITY STRUCTURE ; DESERT CRUSTS ; GREEN-ALGAE ; CYANOBACTERIA ; DIVERSITY ; PATTERNS ; DIAZOTROPHS ; SEQUENCES |
| WOS类目 | Ecology ; Microbiology |
| WOS研究方向 | Environmental Sciences & Ecology ; 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/2XILL650/328268 |
| 作者单位 | [Nelson, Corey; Giraldo-Silva, Ana; Garcia-Pichel, Ferran] Arizona State Univ, Biodesign Inst, Ctr Fundamental & Appl Microbi, Tempe, AZ 85287 USA; [Nelson, Corey; Giraldo-Silva, Ana; Garcia-Pichel, Ferran] Arizona State Univ, Sch Life Sci, Tempe, AZ 85287 USA |
| 推荐引用方式 GB/T 7714 | Nelson, Corey,Giraldo-Silva, Ana,Garcia-Pichel, Ferran. A symbiotic nutrient exchange within the cyanosphere microbiome of the biocrust cyanobacterium,Microcoleus vaginatus[J]. Arizona State University. |
| APA | Nelson, Corey,Giraldo-Silva, Ana,&Garcia-Pichel, Ferran. |
| MLA | Nelson, Corey,et al."A symbiotic nutrient exchange within the cyanosphere microbiome of the biocrust cyanobacterium,Microcoleus vaginatus".ISME JOURNAL |
| 条目包含的文件 | 条目无相关文件。 | |||||
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