A dynamic framework for quantifying the genetic architecture of phenotypic plasticity

文献类型： 外文期刊

第一作者： Wang, Zhong

作者： Wang, Zhong;Lv, Yafei;Xu, Fang;Zhou, Tao;Li, Xin;Feng, Sisi;Wu, Rongling;Pang, Xiaoming;Li, Jiahan;Li, Zhikang;Wu, Rongling

作者机构：

关键词： Genetic architecture;Genotype-environment interaction;Mathematical curve;Phenotypic plasticity;QTL;Statistical model

期刊名称：BRIEFINGS IN BIOINFORMATICS （ 影响因子：11.622； 五年影响因子：10.288 ）

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收录情况： SCI

摘要： Despite its central role in the adaptation and microevolution of traits, the genetic architecture of phenotypic plasticity, i.e. multiple phenotypes produced by a single genotype in changing environments, remains elusive. We know little about the genes that underlie the plastic response of traits to the environment, their number, chromosomal locations and genetic interactions as well as environment impact on their effects. Here we review key statistical approaches for analyzing the genetic variation of phenotypic plasticity due to genotype-environment interactions and describe the implementation of a dynamic model to map specific quantitative trait loci (QTLs) that affect the gradient expression of a quantitative trait across a range of environments. This dynamic model is distinct by incorporating mathematical aspects of phenotypic plasticity into a QTL mapping framework, thereby better unraveling the quantitative attribute of trait response to the environment. By testing the curve parameters that specify environment-dependent trajectories of the trait, the model allows a series of fundamental hypotheses to be tested in a quantitative way about the interplay between gene action/interaction and environmental sensitivity. The model can also make the dynamic prediction of genetic control over phenotypic plasticity within the context of changing environments. We demonstrate the usefulness of the model by reanalyzing a QTL data set for rice, gleaning new insights into the genetic basis for phenotypic plasticity in plant height growth.

分类号： Q3

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