Developmental mechanisms underlying variable, invariant and plastic phenotypes
Developmental mechanisms underlying variable, invariant and plastic phenotypes
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DOI：
10.1093/aob/mcw016
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发表时间：
2016-04-01
期刊：
影响因子：
4.2
通讯作者：
Leyser, H. M. Ottoline
中科院分区：
文献类型：
--
作者：
Abley, Katie;Locke, James C. W.;Leyser, H. M. Ottoline
背景
表型稳健性的讨论通常考虑不变表型为最优的情况，并假定发育机制已经进化到能够缓冲特定性状的表型免受随机和环境扰动的影响。然而，在不同环境间变化的可塑性植物表型，或者在一个环境内随机变化的可变表型在某些情况下也可能是有利的。
范围
在此，研究了特定性状的不变、可塑性和可变表型在植物中可能具有选择优势的条件。借鉴微生物和多细胞生物的研究成果，讨论了可能产生每种表型的机制。
结论
与将稳健性视为基因型产生单一、不变表型的能力的观点相反，表型对环境的响应变化，或者环境内的表型变异性，也可能是一致的（即稳健的）。因此，对于某些植物性状，很可能已经进化出一些机制以可靠的方式产生可塑性或变异性。
Background Discussions of phenotypic robustness often consider scenarios where invariant phenotypes are optimal and assume that developmental mechanisms have evolved to buffer the phenotypes of specific traits against stochastic and environmental perturbations. However, plastic plant phenotypes that vary between environments or variable phenotypes that vary stochastically within an environment may also be advantageous in some scenarios.Scope Here the conditions under which invariant, plastic and variable phenotypes of specific traits may confer a selective advantage in plants are examined. Drawing on work from microbes and multicellular organisms, the mechanisms that may give rise to each type of phenotype are discussed.Conclusion In contrast to the view of robustness as being the ability of a genotype to produce a single, invariant phenotype, changes in a phenotype in response to the environment, or phenotypic variability within an environment, may also be delivered consistently (i.e. robustly). Thus, for some plant traits, mechanisms have probably evolved to produce plasticity or variability in a reliable manner.