The Genetic Architecture for Phenotypic Plasticity of the Rice Grain Ionome

Frontiers in Plant Science
Yongjun TanLiang Sun

Abstract

The ionome of the rice grain is crucial for the health of populations that consume rice as a staple food. However, the contribution of phenotypic plasticity to the variation of rice grain ionome and the genetic architecture of phenotypic plasticity are poorly understood. In this study, we investigated the rice grain ionome of a rice diversity panel in up to eight environments. A considerable proportion of phenotypic variance can be attributed to phenotypic plasticity. Then, phenotypic plasticity and mean phenotype were quantified using Bayesian Finlay-Wilkinson regression, and a significant correlation between them was observed. However, the genetic architecture of mean phenotype was distinct from that of phenotypic plasticity. Also, the correlation between them was mainly attributed to the phenotypic divergence between rice subspecies. Furthermore, the results of whole-genome regression analysis showed that the genetic loci related to phenotypic plasticity can explain a considerable proportion of the phenotypic variance in some environments, especially for Cd, Cu, Mn, and Zn. Our study not only sheds light on the genetic architecture of phenotypic plasticity of the rice grain ionome but also suggests that the genetic loci whic...Continue Reading

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Datasets Mentioned

BETA
CRA000995

Methods Mentioned

BETA
genotyping
dissection

Software Mentioned

R package
MAS
EIGENSTART
R
R package qqman
R package EnvStats
sommar
R package lmer4
R package Pstat
R package FW

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