University of Miami, Department of Biology, Coral Gables, FL 33146, USA.
University of Miami, Department of Biology, Coral Gables, FL 33146, USA.
Curr Opin Plant Biol. 2020 Aug;56:28-36. doi: 10.1016/j.pbi.2020.02.003. Epub 2020 Apr 1.
All plants host diverse microbial assemblages that shape plant health, productivity, and function. While some microbial effects are attributable to particular symbionts, interactions among plant-associated microbes can nonadditively affect plant fitness and traits in ways that cannot be predicted from pairwise interactions. Recent research into tripartite plant-microbe mutualisms has provided crucial insight into this nonadditivity and the mechanisms underlying plant interactions with multiple microbes. Here, we discuss how interactions among microbial mutualists affect plant performance, highlight consequences of biotic and abiotic context-dependency for nonadditive outcomes, and summarize burgeoning efforts to determine the molecular bases of how plants regulate establishment, resource exchange, and maintenance of tripartite interactions. We conclude with four goals for future tripartite studies that will advance our overall understanding of complex plant-microbial interactions.
所有植物都有多种多样的微生物群落，这些群落影响着植物的健康、生产力和功能。虽然一些微生物的影响归因于特定的共生体，但植物相关微生物之间的相互作用可以以不能从两两相互作用中预测的方式非加性地影响植物的适应性和特征。最近对三方植物-微生物共生关系的研究为这种非加性以及植物与多种微生物相互作用的机制提供了重要的见解。在这里，我们讨论了微生物共生体之间的相互作用如何影响植物的表现，强调了生物和非生物背景依赖性对非加性结果的影响，并总结了确定植物如何调节三方相互作用的建立、资源交换和维持的分子基础的新兴努力。我们最后提出了未来三方研究的四个目标，这将有助于我们全面理解复杂的植物-微生物相互作用。
