Title |
Plasticity and constraints on fatty acid composition in the phospholipids and triacylglycerols of Arabidopsisaccessions grown at different temperatures
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Published in |
BMC Plant Biology, April 2013
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DOI | 10.1186/1471-2229-13-63 |
Pubmed ID | |
Authors |
Anushree Sanyal, Craig Randal Linder |
Abstract |
Natural selection acts on multiple traits in an organism, and the final outcome of adaptive evolution may be constrained by the interaction of physiological and functional integration of those traits. Fatty acid composition is an important determinant of seed oil quality. In plants the relative proportions of unsaturated fatty acids in phospholipids and seed triacylglycerols often increases adaptively in response to lower growing temperatures to increase fitness. Previous work produced evidence of genetic constraints between phospholipids and triacylglycerols in the widely studied Arabidopsis lines Col and Ler, but because these lines are highly inbred, the correlations might be spurious. In this study, we grew 84 wild Arabidopsis accessions at two temperatures to show that genetic correlation between the fatty acids of the two lipid types is not expected and one should not influence the other and seed oil evolution and also tested for the adaptive response of fatty acids to latitude and temperature. |
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