Vegetative phase change causes age‐dependent changes in phenotypic plasticity
Vegetative phase change causes age‐dependent changes in phenotypic plasticity
复制标题
营养阶段的变化导致表型可塑性的年龄依赖性变化
DOI：
10.1111/nph.19174
复制
发表时间：
2023
期刊：
影响因子：
9.4
通讯作者：
Lasky, Jesse R.
中科院分区：
文献类型：
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作者：
Lawrence‐Paul, Erica H.;Poethig, R. Scott;Lasky, Jesse R.
表型可塑性使生物体能够根据环境优化性状。随着生物年龄的增长，它们经历了不同的环境，这些环境受益于不同程度的表型可塑性。发育转变可以控制这些年龄依赖性的可塑性变化，因此，这些转变的时间可以决定生物体的可塑性何时发生变化。在这里，我们研究了从幼年到成年营养发育的转变（称为营养相变（VPC））如何促进表型可塑性的年龄依赖性变化，以及这种转变的时间如何响应环境，使用了模式植物拟南芥的自然加入和突变系。我们发现营养发育的成虫期比幼虫期在叶片形态上具有更大的可塑性，并利用突变系证实了这种可塑性的差异是由VPC引起的。此外，我们发现VPC的时间，即获得增强可塑性的时间，在不同的基因型和环境中存在显著差异。VPC引起的可塑性随年龄的变化表明VPC可能具有适应性。这种遗传和环境变化在VPC的时间表明VPC的群体水平适应性进化的潜力。
Phenotypic plasticity allows organisms to optimize traits for their environment. As organisms age, they experience diverse environments that benefit from varying degrees of phenotypic plasticity. Developmental transitions can control these age‐dependent changes in plasticity, and as such, the timing of these transitions can determine when plasticity changes in an organism.Here, we investigate how the transition from juvenile‐to adult‐vegetative development known as vegetative phase change (VPC) contributes to age‐dependent changes in phenotypic plasticity and how the timing of this transition responds to environment using both natural accessions and mutant lines in the model plantArabidopsis thaliana.We found that the adult phase of vegetative development has greater plasticity in leaf morphology than the juvenile phase and confirmed that this difference in plasticity is caused by VPC using mutant lines. Furthermore, we found that the timing of VPC, and therefore the time when increased plasticity is acquired, varies significantly across genotypes and environments.The consistent age‐dependent changes in plasticity caused by VPC suggest that VPC may be adaptive. This genetic and environmental variation in the timing of VPC indicates the potential for population‐level adaptive evolution of VPC.