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Natural variation at FLM splicing has pleiotropic effects modulating ecological strategies in Arabidopsis thaliana

Abstract : Investigating the evolution of complex phenotypes and the underlying molecular bases of their variation is critical to understand how organisms adapt to their environment. Applying classical quantitative genetics on a segregating population derived from a Can-0xCol-0 cross, we identify the MADS-box transcription factor FLOWERING LOCUS M (FLM) as a player of the phenotypic variation in plant growth and color. We show that allelic variation at FLM modulates plant growth strategy along the leaf economics spectrum, a trade-off between resource acquisition and resource conservation, observable across thousands of plant species. Functional differences at FLM rely on a single intronic substitution, disturbing transcript splicing and leading to the accumulation of non-functional FLM transcripts. Associations between this substitution and phenotypic and climatic data across Arabidopsis natural populations, show how noncoding genetic variation at a single gene might be adaptive through pleiotropic effects.
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https://hal.inrae.fr/hal-02945319
Contributor : Mathieu Hanemian <>
Submitted on : Tuesday, September 22, 2020 - 11:02:44 AM
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Mathieu Hanemian, François Vasseur, Elodie Marchadier, Elodie Gilbault, Justine Bresson, et al.. Natural variation at FLM splicing has pleiotropic effects modulating ecological strategies in Arabidopsis thaliana. Nature Communications, Nature Publishing Group, 2020, 11 (1), ⟨10.1038/s41467-020-17896-w⟩. ⟨hal-02945319⟩

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