气候变化领域集成服务门户(CCPortal): Functional variants of DOG1 control seed chilling responses and variation in seasonal life-history strategies in Arabidopsis thaliana

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DOI	10.1073/pnas.1912451117
	Functional variants of DOG1 control seed chilling responses and variation in seasonal life-history strategies in Arabidopsis thaliana
	Martínez-Berdeja A.; Stitzer M.C.; Taylor M.A.; Okada M.; Ezcurra E.; Runcie D.E.; Schmitt J.
发表日期	2020
ISSN	0027-8424
起始页码	2526
结束页码	2534
卷号	117 期号:5
英文摘要	The seasonal timing of seed germination determines a plant’s realized environmental niche, and is important for adaptation to climate. The timing of seasonal germination depends on patterns of seed dormancy release or induction by cold and interacts with flowering-time variation to construct different seasonal life histories. To characterize the genetic basis and climatic associations of natural variation in seed chilling responses and associated life-history syndromes, we selected 559 fully sequenced accessions of the model annual species Arabidopsis thaliana from across a wide climate range and scored each for seed germination across a range of 13 cold stratification treatments, as well as the timing of flowering and senescence. Germination strategies varied continuously along 2 major axes: 1) Overall germination fraction and 2) induction vs. release of dormancy by cold. Natural variation in seed responses to chilling was correlated with flowering time and senescence to create a range of seasonal life-history syndromes. Genome-wide association identified several loci associated with natural variation in seed chilling responses, including a known functional polymorphism in the self-binding domain of the candidate gene DOG1. A phylogeny of DOG1 haplotypes revealed ancient divergence of these functional variants associated with periods of Pleistocene climate change, and Gradient Forest analysis showed that allele turnover of candidate SNPs was significantly associated with climate gradients. These results provide evidence that A. thaliana’s germination niche and correlated life-history syndromes are shaped by past climate cycles, as well as local adaptation to contemporary climate. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Delay of germination; Genome-wide association; Germination niche; Seed dormancy; Stratification
语种	英语
scopus关键词	Arabidopsis thaliana; article; climate change; cold acclimatization; cold stress; flower development; forest; gene frequency; genome-wide association study; germination; haplotype; life history; local adaptation; nonhuman; phylogeny; Pleistocene; seed dormancy; senescence; single nucleotide polymorphism; turnover rate; allele; Arabidopsis; chemistry; cold; gene expression regulation; genetic polymorphism; genetics; germination; growth, development and aging; life history trait; metabolism; plant seed; season; Arabidopsis protein; DOG1 protein, Arabidopsis; Alleles; Arabidopsis; Arabidopsis Proteins; Cold Temperature; Gene Expression Regulation, Plant; Germination; Life History Traits; Polymorphism, Genetic; Seasons; Seeds
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/161067
作者单位	Martínez-Berdeja, A., Department of Evolution and Ecology, University of California, Davis, CA 95616, United States; Stitzer, M.C., Department of Evolution and Ecology, University of California, Davis, CA 95616, United States, Center for Population Biology, University of California, Davis, CA 95616, United States; Taylor, M.A., Department of Evolution and Ecology, University of California, Davis, CA 95616, United States; Okada, M., Department of Evolution and Ecology, University of California, Davis, CA 95616, United States; Ezcurra, E., Department of Botany and Plant Sciences, University of California, Riverside, CA 92521, United States; Runcie, D.E., Department of Plant Sciences, University of California, Davis, CA 95616, United States; Schmitt, J., Department of Evolution and Ecology, University of California, Davis, CA 95616, United States, Center for Population Biology, University of California, Davis, CA 95616, United States
推荐引用方式 GB/T 7714	Martínez-Berdeja A.,Stitzer M.C.,Taylor M.A.,et al. Functional variants of DOG1 control seed chilling responses and variation in seasonal life-history strategies in Arabidopsis thaliana[J],2020,117(5).
APA	Martínez-Berdeja A..,Stitzer M.C..,Taylor M.A..,Okada M..,Ezcurra E..,...&Schmitt J..(2020).Functional variants of DOG1 control seed chilling responses and variation in seasonal life-history strategies in Arabidopsis thaliana.Proceedings of the National Academy of Sciences of the United States of America,117(5).
MLA	Martínez-Berdeja A.,et al."Functional variants of DOG1 control seed chilling responses and variation in seasonal life-history strategies in Arabidopsis thaliana".Proceedings of the National Academy of Sciences of the United States of America 117.5(2020).