Alphaproteobacteria facilitate Trichodesmium community trimethylamine utilization
Alphaproteobacteria facilitate Trichodesmium community trimethylamine utilization
复制标题
α变形菌促进木藻群落三甲胺的利用
DOI:
10.1111/1462-2920.15773
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发表时间:
2021
影响因子:
5.1
通讯作者:
Webb, Eric A.
中科院分区:
文献类型:
--
作者:
Conover, Asa E.;Morando, Michael;Zhao, Yiming;Semones, Jacob;Hutchins, David A.;Webb, Eric A.
In the surface waters of the warm oligotrophic ocean, filaments and aggregated colonies of the nitrogen (N)‐fixing cyanobacteriumTrichodesmiumcreate microscale nutrient‐rich oases. These hotspots fuel primary productivity and harbour a diverse consortium of heterotrophs. Interactions with associated microbiota can affect the physiology ofTrichodesmium, often in ways that have been predicted to support its growth. Recently, it was found that trimethylamine (TMA), a globally abundant organic N compound, inhibits N2fixation in cultures ofTrichodesmiumwithout impairing growth rate, suggesting thatTrichodesmiumcan use TMA as an alternate N source. In this study,15N‐TMA DNA stable isotope probing (SIP) of aTrichodesmiumenrichment was employed to further investigate TMA metabolism and determine whether TMA‐N is incorporated directly or secondarily via cross‐feeding facilitated by microbial associates. Herein, we identify two members of the marineRoseobacterclade (MRC) of Alphaproteobacteria as the likely metabolizers of TMA and provide genomic evidence that they converted TMA into a more readily available form of N, e.g., ammonium (NH4+), which was subsequently used byTrichodesmiumand the rest of the community. The results implicate microbiome‐mediated carbon (C) and N transformations in modulating N2fixation and thus highlight the involvement of host‐associated heterotrophs in global biogeochemical cycling.
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影响因子:
48
作者:
Langmead, Ben;Salzberg, Steven L.
通讯作者:
Salzberg, Steven L.
DOI:
10.1073/pnas.2016810118
发表时间:
2021-03-23
影响因子:
11.1
作者:
Weissman JL;Hou S;Fuhrman JA
通讯作者:
Fuhrman JA
影响因子:
2.9
作者:
N. Wasmund;I. Topp;D. Schories
通讯作者:
N. Wasmund;I. Topp;D. Schories
影响因子:
5.2
作者:
Gradoville MR;Crump BC;Letelier RM;Church MJ;White AE
通讯作者:
White AE
影响因子:
5.3
作者:
A. M. Eren;A. Murat Eren;Ozcan C Esen;C. Quince;Joseph H Vineis;H. Morrison;M. Sogin;Tom O. Delmont-Tom-O.-D
通讯作者:
A. M. Eren;A. Murat Eren;Ozcan C Esen;C. Quince;Joseph H Vineis;H. Morrison;M. Sogin;Tom O. Delmont-Tom-O.-D