Spatial and temporal dynamics of the bacterial community under experimental warming in field-grown wheat.
Spatial and temporal dynamics of the bacterial community under experimental warming in field-grown wheat.
复制标题
大田小麦试验增温条件下细菌群落的时空动态
作者：
Wang J;Chen S;Sun R;Liu B;Waghmode T;Hu C
气候变化可能会对农作物造成不利影响，植物微生物群有可能帮助宿主抵消这些影响。虽然已知植物-微生物相互作用对温度敏感，但气候变暖如何影响大多数农作物中植物微生物群落的组成和功能仍不清楚。本文通过为期10年的田间试验，研究了气候变暖对大田小麦(Triticum aestivum L.)根区碳有效性、微生物活性和群落组成的影响。根际溶解有机碳和微生物活性随土壤变暖而增加，不同生育期差异较大。增温对根际和根际土壤微生物群落组成的影响比对土壤整体的影响更大。微生物群落组成，特别是放线菌门和微生物门，随着气候变暖发生了很大的变化。有趣的是，在变暖的情况下，根和根际中一些已知的共营养类群，如假单胞菌和芽孢杆菌，以及放线菌属的丰度增加，这些类群的增加表明它们可能在提高植物对气候变暖的适应能力方面发挥作用。综上所述，我们证明了土壤变暖、根部邻近和植物生长状况驱动了小麦根区微生物群落组成和功能的变化。
Climate change may lead to adverse effects on agricultural crops, plant microbiomes have the potential to help hosts counteract these effects. While plant–microbe interactions are known to be sensitive to temperature, how warming affects the community composition and functioning of plant microbiomes in most agricultural crops is still unclear. Here, we utilized a 10-year field experiment to investigate the effects of warming on root zone carbon availability, microbial activity and community composition at spatial (root, rhizosphere and bulk soil) and temporal (tillering, jointing and ripening stages of plants) scales in field-grown wheat (Triticum aestivum L.). The dissolved organic carbon and microbial activity in the rhizosphere were increased by soil warming and varied considerably across wheat growth stages. Warming exerted stronger effects on the microbial community composition in the root and rhizosphere samples than in the bulk soil. Microbial community composition, particularly the phyla Actinobacteria and Firmicutes, shifted considerably in response to warming. Interestingly, the abundance of a number of known copiotrophic taxa, such as Pseudomonas and Bacillus, and genera in Actinomycetales increased in the roots and rhizosphere under warming and the increase in these taxa implies that they may play a role in increasing the resilience of plants to warming. Taken together, we demonstrated that soil warming along with root proximity and plant growth status drives changes in the microbial community composition and function in the wheat root zone.
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影响因子：
5.2
作者：
Goldfarb KC;Karaoz U;Hanson CA;Santee CA;Bradford MA;Treseder KK;Wallenstein MD;Brodie EL
通讯作者：
Brodie EL
影响因子：
6.4
作者：
Langille MGI
通讯作者：
Langille MGI
影响因子：
5.2
作者：
Roy Chowdhury P;Golas SM;Alteio LV;Stevens JTE;Billings AF;Blanchard JL;Melillo JM;DeAngelis KM
通讯作者：
DeAngelis KM
影响因子：
48
作者：
Callahan BJ;McMurdie PJ;Rosen MJ;Han AW;Johnson AJ;Holmes SP
通讯作者：
Holmes SP
有机碳的有效性限制了深渗流区的微生物反硝化
影响因子：
5.1
作者：
Chen, Shuaimin;Wang, Fenghua;Liu, Binbin
通讯作者：
Liu, Binbin