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- W4384007990 abstract "Abstract Synchronizing the timing of reproduction with the environment is crucial in the wild. Among the multiple mechanisms annual plants evolved to sense their environment, the requirement of cold-mediated vernalization is a major process that prevents individuals from flowering during winter. In many annual plants including crops, both a long and short vernalization requirement can be observed within species, resulting in so-called early-(spring) and late (winter)-flowering genotypes. Here, using the grass model Brachypodium distachyon , we explored the link between vernalization requirement, flowering time, environmental variation, and diversity at flowering genes by combining measurements under greenhouse and outdoor conditions. These experiments confirmed that B. distachyon natural accessions display large differences regarding vernalization requirements and ultimately flowering time. We underline significant, albeit quantitative effects of current environmental conditions on flowering time. Population genomics in 332 natural accessions revealed that eight well-characterized flowering-time genes contribute significantly to flowering time variation and display signs of polygenic selection. Flowering-time genes, however, do not colocalize with GWAs peaks obtained with outdoor measurements, indicating that flowering-time genes may not largely contribute to flowering time variation in the wild. Altogether, our study fosters our understanding of the polygenic architecture of flowering time in a natural grass system and opens new avenues of research to investigate the gene-by-environment interaction at play for this trait." @default.
- W4384007990 created "2023-07-13" @default.
- W4384007990 creator A5000799115 @default.
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- W4384007990 date "2023-07-12" @default.
- W4384007990 modified "2023-10-17" @default.
- W4384007990 title "Polygenic architecture of flowering time and its relationship with local environments in the grass<i>Brachypodium distachyon</i>" @default.
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- W4384007990 doi "https://doi.org/10.1101/2023.07.11.548268" @default.
- W4384007990 hasPublicationYear "2023" @default.
- W4384007990 type Work @default.