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Association mapping of local climate-sensitive quantitative trait loci in Arabidopsis thaliana

Open access
Li, Yan, Huang, Yu, Bergelson, Joy, Nordborg, Magnus, Borevitz, Justin O.·2010·Proceedings of the National Academy of Sciences

Abstract

Flowering time (FT) is the developmental transition coupling an internal genetic program with external local and seasonal climate cues. The genetic loci sensitive to predictable environmental signals underlie local adaptation. We dissected natural variation in FT across a new global diversity set of 473 unique accessions, with >12,000 plants across two seasonal plantings in each of two simulated local climates, Spain and Sweden. Genome-wide association mapping was carried out with 213,497 SNPs. A total of 12 FT candidate quantitative trait loci (QTL) were fine-mapped in two independent studies, including 4 located within ±10 kb of previously cloned FT alleles and 8 novel loci. All QTL show sensitivity to planting season and/or simulated location in a multi-QTL mixed model. Alleles at four QTL were significantly correlated with latitude of origin, implying past selection for faster flowering in southern locations. Finally, maximum seed yield was observed at an optimal FT unique to each season and location, with four FT QTL directly controlling yield. Our results suggest that these major, environmentally sensitive FT QTL play an important role in spatial and temporal adaptation.

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Metadata

Authors
Li, Y., Huang, Y., Bergelson, J., Nordborg, M., & Borevitz, J. O.
Venue
Proceedings of the National Academy of Sciences
Published
2010-11-15
Volume
107
Issue
49
Pages
21199-21204
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2035422475
Cited by
293
References
3
FWCI
11.40
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Association mapping of local climate-sensitive quantitative trait loci in Arabidopsis thaliana. https://app.cochat.ai/papers/10.1073/pnas.1007431107
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Li, Y., Huang, Y., Bergelson, J., Nordborg, M., & Borevitz, J. O. (2010). Association mapping of local climate-sensitive quantitative trait loci in Arabidopsis thaliana. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1007431107

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