The impact of beneficial plant-associated microbes on plant phenotypic plasticity.
The impact of beneficial plant-associated microbes on plant phenotypic plasticity.
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DOI：
10.1007/s10886-013-0326-8
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发表时间：
2013-07
影响因子：
2.3
通讯作者：
Mathesius, Ulrike
中科院分区：
文献类型：
--
作者：
Goh, Chooi-Hua;Vallejos, Debora F. Veliz;Nicotra, Adrienne B.;Mathesius, Ulrike
关键词：
植物对变化或极端的非生物环境表现出表型可塑性；但数百万年来，它们也共同进化，以应对土壤微生物的存在。植物表型可塑性的研究主要集中在环境变化对植物生长和生存的影响上。越来越多的证据表明，微生物的存在可以改变植物表型的可塑性，以适应不断变化的环境。在这篇综述中，我们讨论了微生物对植物表型可塑性的影响，以应对不断变化的环境条件，以及这可能如何影响植物适应性。通过使用一系列特定的植物-微生物相互作用作为例子，我们证明微生物可以减轻环境胁迫对植物的影响，从而提高植物适应性的一种方式是直接消除胁迫，例如营养限制。此外，微生物通过调节植物的发育和防御反应间接影响植物的表型可塑性和适应性。在此过程中，微生物通过增加或减少表型可塑性的程度来影响适应度，这取决于所研究的表型和环境胁迫，一般来说，原核微生物和真核微生物的作用没有明显区别。此外，植物具有调节微生物行为的能力，这表明它们可以操纵细菌，增强相互作用，帮助它们应对压力环境。未来的挑战仍然存在于许多调节表型可塑性的微生物信号的识别，介导微生物对可塑性影响的植物基因（如受体）的表征，以及表型可塑性与适应性联系的分子机制的阐明。对信号合成或感知缺陷的植物和微生物突变体进行表征，以及精心设计的测试各种环境胁迫的温室或田间实验，对于理解控制塑性表型的分子机制与对植物适应性的影响之间的联系是必要的。
Plants show phenotypic plasticity in response to changing or extreme abiotic environments; but over millions of years they also have co-evolved to respond to the presence of soil microbes. Studies on phenotypic plasticity in plants have focused mainly on the effects of the changing environments on plants’ growth and survival. Evidence is now accumulating that the presence of microbes can alter plant phenotypic plasticity in a broad range of traits in response to a changing environment. In this review, we discuss the effects of microbes on plant phenotypic plasticity in response to changing environmental conditions, and how this may affect plant fitness. By using a range of specific plant-microbe interactions as examples, we demonstrate that one way that microbes can alleviate the effect of environmental stress on plants and thus increase plant fitness is to remove the stress, e.g., nutrient limitation, directly. Furthermore, microbes indirectly affect plant phenotypic plasticity and fitness through modulation of plant development and defense responses. In doing so, microbes affect fitness by both increasing or decreasing the degree of phenotypic plasticity, depending on the phenotype and the environmental stress studied, with no clear difference between the effect of prokaryotic and eukaryotic microbes in general. Additionally, plants have the ability to modulate microbial behaviors, suggesting that they manipulate bacteria, enhancing interactions that help them cope with stressful environments. Future challenges remain in the identification of the many microbial signals that modulate phenotypic plasticity, the characterization of plant genes, e.g. receptors, that mediate the microbial effects on plasticity, and the elucidation of the molecular mechanisms that link phenotypic plasticity with fitness. The characterization of plant and microbial mutants defective in signal synthesis or perception, together with carefully designed glasshouse or field experiments that test various environmental stresses will be necessary to understand the link between molecular mechanisms controlling plastic phenotypes with the resulting effects on plant fitness.
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影响因子：
2.9
作者：
Denison, RF
通讯作者：
Denison, RF
影响因子：
5.7
作者：
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通讯作者：
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通讯作者：
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作者：
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