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Genetic architecture and adaptation of flowering time among environments.

Publication ,  Journal Article
Yan, W; Wang, B; Chan, E; Mitchell-Olds, T
Published in: The New phytologist
May 2021

The genetic basis of flowering time changes across environments, and pleiotropy may limit adaptive evolution of populations in response to local conditions. However, little information is known about how genetic architecture changes among environments. We used genome-wide association studies (GWAS) in Boechera stricta (Graham) Al-Shehbaz, a relative of Arabidopsis, to examine flowering variation among environments and associations with climate conditions in home environments. Also, we used molecular population genetics to search for evidence of historical natural selection. GWAS found 47 significant quantitative trait loci (QTLs) that influence flowering time in one or more environments, control plastic changes in phenology between experiments, or show associations with climate in sites of origin. Genetic architecture of flowering varied substantially among environments. We found that some pairs of QTLs showed similar patterns of pleiotropy across environments. A large-effect QTL showed molecular signatures of adaptive evolution and is associated with climate in home environments. The derived allele at this locus causes later flowering and predominates in sites with greater water availability. This work shows that GWAS of climate associations and ecologically important traits across diverse environments can be combined with molecular signatures of natural selection to elucidate ecological genetics of adaptive evolution.

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Published In

The New phytologist

DOI

EISSN

1469-8137

ISSN

0028-646X

Publication Date

May 2021

Volume

230

Issue

3

Start / End Page

1214 / 1227

Related Subject Headings

  • Selection, Genetic
  • Quantitative Trait Loci
  • Plant Biology & Botany
  • Phenotype
  • Genome-Wide Association Study
  • Flowers
  • Adaptation, Physiological
  • 4102 Ecological applications
  • 4101 Climate change impacts and adaptation
  • 3108 Plant biology
 

Citation

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Yan, W., Wang, B., Chan, E., & Mitchell-Olds, T. (2021). Genetic architecture and adaptation of flowering time among environments. The New Phytologist, 230(3), 1214–1227. https://doi.org/10.1111/nph.17229
Yan, Wenjie, Baosheng Wang, Emily Chan, and Thomas Mitchell-Olds. “Genetic architecture and adaptation of flowering time among environments.The New Phytologist 230, no. 3 (May 2021): 1214–27. https://doi.org/10.1111/nph.17229.
Yan W, Wang B, Chan E, Mitchell-Olds T. Genetic architecture and adaptation of flowering time among environments. The New phytologist. 2021 May;230(3):1214–27.
Yan, Wenjie, et al. “Genetic architecture and adaptation of flowering time among environments.The New Phytologist, vol. 230, no. 3, May 2021, pp. 1214–27. Epmc, doi:10.1111/nph.17229.
Yan W, Wang B, Chan E, Mitchell-Olds T. Genetic architecture and adaptation of flowering time among environments. The New phytologist. 2021 May;230(3):1214–1227.
Journal cover image

Published In

The New phytologist

DOI

EISSN

1469-8137

ISSN

0028-646X

Publication Date

May 2021

Volume

230

Issue

3

Start / End Page

1214 / 1227

Related Subject Headings

  • Selection, Genetic
  • Quantitative Trait Loci
  • Plant Biology & Botany
  • Phenotype
  • Genome-Wide Association Study
  • Flowers
  • Adaptation, Physiological
  • 4102 Ecological applications
  • 4101 Climate change impacts and adaptation
  • 3108 Plant biology