Strategies and Structure Feature of the Aboveground and Belowground Microbial Community Respond to Drought in Wild Rice (Oryza longistaminata).
Strategies and Structure Feature of the Aboveground and Belowground Microbial Community Respond to Drought in Wild Rice (Oryza longistaminata).
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DOI：
10.1186/s12284-021-00522-8
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发表时间：
2021-09-08
期刊：
影响因子：
--
通讯作者：
Ding X
中科院分区：
文献类型：
--
作者：
Xie J;Wang X;Xu J;Xie H;Cai Y;Liu Y;Ding X
干旱是限制农作物产量的全球环境压力。与植物相关的微生物组在决定植物应对干旱的适应性方面发挥着至关重要的作用，但野生稻在干旱干扰下维持微生物群落稳定性的基本机制尚不清楚。我们对耐旱野生稻（Oryza longistaminata）的叶、茎、根和根际微生物组对干旱胁迫的响应进行了明确的比较。我们发现野生稻微生物组对干旱的反应分为地上-地下模式。干旱降低了叶和茎微生物群落的多样性和网络稳定性，但不会降低根和根际的多样性和网络稳定性。与地上微生物网络相反，干旱负响应类群比干旱正响应类群表现出更紧密的互连性，并且是地下共生网络的主要网络枢纽，这可能有助于地下网络的稳定性。值得注意的是，干旱会导致放线菌在地下隔室中富集，但不会在地上隔室中富集。此外，与其他区室的微生物组相比，根际微生物组表现出更高的通才比例和更广泛的生境生态位宽度，并且干旱提高了所有区室中专家的比例。零模型分析表明，地上和地下群落主要受随机组装过程控制，此外，干旱减少了“扩散限制”，增强了“漂移”。我们的研究结果为地上和地下微生物群落应对干旱的不同策略和组装机制提供了新的见解，包括丰富分类群，并强调了随机组装过程在干旱胁迫下塑造微生物群落中的重要作用。在线版本包含可在 10.1186/s12284-021-00522-8 获取的补充材料。
Drought is global environmental stress that limits crop yields. Plant-associated microbiomes play a crucial role in determining plant fitness in response to drought, yet the fundamental mechanisms for maintaining microbial community stability under drought disturbances in wild rice are poorly understood. We make explicit comparisons of leaf, stem, root and rhizosphere microbiomes from the drought-tolerant wild rice (Oryza longistaminata) in response to drought stress. We find that the response of the wild rice microbiome to drought was divided into aboveground–underground patterns. Drought reduced the leaf and stem microbial community diversity and networks stability, but not that of the roots and rhizospheres. Contrary to the aboveground microbial networks, the drought-negative response taxa exhibited much closer interconnections than the drought-positive response taxa and were the dominant network hubs of belowground co-occurrence networks, which may contribute to the stability of the belowground network. Notably, drought induces enrichment of Actinobacteria in belowground compartments, but not the aboveground compartment. Additionally, the rhizosphere microbiome exhibited a higher proportion of generalists and broader habitat niche breadth than the microbiome at other compartments, and drought enhanced the proportion of specialists in all compartments. Null model analysis revealed that both the aboveground and belowground-community were governed primarily by the stochastic assembly process, moreover, drought decreased ‘dispersal limitation’, and enhanced ‘drift’. Our results provide new insight into the different strategies and assembly mechanisms of the above and belowground microbial community in response to drought, including enrichment of taxonomic groups, and highlight the important role of the stochastic assembly process in shaping microbial community under drought stress. The online version contains supplementary material available at 10.1186/s12284-021-00522-8.
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影响因子：
16.6
作者：
de Vries FT;Griffiths RI;Bailey M;Craig H;Girlanda M;Gweon HS;Hallin S;Kaisermann A;Keith AM;Kretzschmar M;Lemanceau P;Lumini E;Mason KE;Oliver A;Ostle N;Prosser JI;Thion C;Thomson B;Bardgett RD
通讯作者：
Bardgett RD
DOI：
10.1126/science.1224203
发表时间：
2012-06-08
期刊：
Science (New York, N.Y.)
影响因子：
--
作者：
Costello EK;Stagaman K;Dethlefsen L;Bohannan BJ;Relman DA
通讯作者：
Relman DA
影响因子：
4.4
作者：
Yang H;Hu L;Hurek T;Reinhold-Hurek B
通讯作者：
Reinhold-Hurek B
影响因子：
9.7
作者：
Fan, Kunkun;Weisenhorn, Pamela;Chu, Haiyan
通讯作者：
Chu, Haiyan
影响因子：
64.8
作者：
Bai, Yang;Mueller, Daniel B.;Schulze-Lefert, Paul
通讯作者：
Schulze-Lefert, Paul