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Correlated response in plasticity to selection for early flowering in Arabidopsis thaliana
Author(s) -
SPRINGATE D. A.,
SCARCELLI N.,
ROWNTREE J.,
KOVER P. X.
Publication year - 2011
Publication title -
journal of evolutionary biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.289
H-Index - 128
eISSN - 1420-9101
pISSN - 1010-061X
DOI - 10.1111/j.1420-9101.2011.02360.x
Subject(s) - biology , plasticity , trait , phenotypic plasticity , selection (genetic algorithm) , environmental change , arabidopsis thaliana , evolutionary biology , ex situ conservation , adaptive value , stabilizing selection , ecology , climate change , genetic variation , genetics , gene , endangered species , physics , artificial intelligence , habitat , computer science , mutant , thermodynamics , programming language
Phenotypic plasticity is an important strategy for coping with changing environments. However, environmental change usually results in strong directional selection, and little is known empirically about how this affects plasticity. If genes affecting a trait value also affect its plasticity, selection on the trait should influence plasticity. Synthetic outbred populations of Arabidopsis thaliana were selected for earlier flowering under simulated spring‐ and winter‐annual conditions to investigate the correlated response of flowering time plasticity and its effect on family‐by‐environment variance ( V g×e) within each selected line. We found that selection affected plasticity in an environmentally dependent manner: under simulated spring‐annual conditions, selection increased the magnitude of plastic response but decreased V g×e; selection under simulated winter‐annual conditions reduced the magnitude of plastic response but did not alter V g×e significantly. As selection may constrain future response to environmental change, the environment for crop breeding and ex situ conservation programmes should be carefully chosen. Models of species persistence under environmental change should also consider the interaction between selection and plasticity.

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