Pozo María J, López-Ráez Juan A, Azcón-Aguilar Concepción, García-Garrido José M
Department of Soil Microbiology and Symbiotic Systems, Estación Experimental del Zaidín (CSIC), Granada, Spain.
New Phytol. 2015 Mar;205(4):1431-1436. doi: 10.1111/nph.13252. Epub 2015 Jan 7.
For survival, plants have to efficiently adjust their phenotype to environmental challenges, finely coordinating their responses to balance growth and defence. Such phenotypic plasticity can be modulated by their associated microbiota. The widespread mycorrhizal symbioses modify plant responses to external stimuli, generally improving the resilience of the symbiotic system to environmental stresses. Phytohormones, central regulators of plant development and immunity, are instrumental in orchestrating plant responses to the fluctuating environment, but also in the regulation of mycorrhizal symbioses. Exciting advances in the molecular regulation of phytohormone signalling are providing mechanistic insights into how plants coordinate their responses to environmental cues and mycorrhizal functioning. Here, we summarize how these mechanisms permit the fine-tuning of the symbiosis according to the ever-changing environment.
为了生存，植物必须有效地调整其表型以应对环境挑战，精细地协调其反应以平衡生长和防御。这种表型可塑性可由其相关的微生物群调节。广泛存在的菌根共生会改变植物对外界刺激的反应，通常会提高共生系统对环境压力的恢复力。植物激素作为植物发育和免疫的核心调节因子，不仅在协调植物对多变环境的反应中发挥作用，也在菌根共生的调节中发挥作用。植物激素信号传导的分子调控方面的激动人心的进展，正在为植物如何协调其对环境线索的反应和菌根功能提供机制上的见解。在这里，我们总结了这些机制如何根据不断变化的环境对共生关系进行微调。
