Microbial population and community dynamics on plant roots and their feedbacks on plant communities.
Microbial population and community dynamics on plant roots and their feedbacks on plant communities.
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DOI：
10.1146/annurev-micro-092611-150107
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发表时间：
2012
影响因子：
10.5
通讯作者：
Morton ER
中科院分区：
文献类型：
--
作者：
Bever JD;Platt TG;Morton ER
由于与个别植物物种的关联，土壤微生物群落的组成可能会发生巨大变化，这些对微生物群落的影响可能会对植物生态产生重要的反馈。植物-土壤负反馈在维持植物群落多样性中起主要作用，而植物-土壤正反馈可能导致群落转变。微生物群落的宿主特异性分化是由于与克服植物防御相关的权衡和与植物奖励相关的特定利益的权衡所致。宿主特异性病原体的积累可能会对植物产生负反馈，而微生物互利共生体密度的变化可能会产生正反馈。然而，微生物之间的竞争动态取决于毒力和互利共生的多维成本、植物根内的精细空间结构以及主动的植物分配和局部防御。因此，全面了解微生物动态对于解释植物-土壤反馈动态以及植物群落生态至关重要。
The composition of the soil microbial community can be altered dramatically due to association with individual plant species, and these effects on the microbial community can have important feedbacks on plant ecology. Negative plant-soil feedback plays primary roles in maintaining plant community diversity, whereas positive plant-soil feedback may cause community conversion. Host-specific differentiation of the microbial community results from the trade-offs associated with overcoming plant defense and the specific benefits associated with plant rewards. Accumulation of host-specific pathogens likely generates negative feedback on the plant, while changes in the density of microbial mutualists likely generate positive feedback. However, the competitive dynamics among microbes depends on the multidimensional costs of virulence and mutualism, the fine-scale spatial structure within plant roots, and active plant allocation and localized defense. Because of this, incorporating a full view of microbial dynamics is essential to explaining the dynamics of plant-soil feedbacks and therefore plant community ecology.
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