Molecular and geographic evolutionary support for the essential role of GIGANTEAa in soybean domestication of flowering time

doi:10.1186/s12862-016-0653-9

	Molecular and geographic evolutionary support for the essential role of GIGANTEAa in soybean domestication of flowering time
	Wang, Yan ; Gu, Yongzhe 1; Gao, Huihui 1; Qiu, Lijuan 2; Chang, Ruzhen 2; Chen, Shouyi 3; He, Chaoying
	2016
发表期刊	BMC EVOLUTIONARY BIOLOGY
ISSN	1471-2148
卷号	16
摘要	Background: Flowering time is a domestication trait of Glycine max and varies in soybeans, yet, a gene for flowering time variation has not been associated with soybean domestication. GIGANTEA (GI) is a major gene involved in the control of flowering time in Arabidopsis, although three GI homologs complicate this model in the soybean genome. Results: In the present work, we revealed that the geographic evolution of the GIGANTEAa (GIa) haplotypes in G. max (GmGIa) and Glycine soja (GsGIa). Three GIa haplotypes (H1, H2, and H3) were found among cultivated soybeans and their wild relatives, yet an additional 44 diverse haplotypes were observed in wild soybeans. H1 had a premature stop codon in the 10th exon, whereas the other haplotypes encoded full-length GIa protein isoforms. In both wild-type and cultivated soybeans, H2 was present in the Southern region of China, and H3 was restricted to areas near the Northeast region of China. H1 was genetically derived from H2, and it was dominant and widely distributed among cultivated soybeans, whereas in wild populations, the ortholog of this domesticated haplotype H1 was only found in Yellow River basin with a low frequency. Moreover, this mutated GIa haplotype significantly correlated with early flowering. We further determined that the differences in gene expression of the three GmGIa haplotypes were not correlated to flowering time variations in cultivated soybeans. However, only the truncated GmGIa H1 could partially rescue gi-2 Arabidopsis from delayed flowering in transgenic plants, whereas both GmGIa H2 and H3 haplotypes could significantly repress flowering in transgenic Arabidopsis with a wild-type background. Conclusions: Thus, GmGIa haplotype diversification may have contributed to flowering time adaptation that facilitated the radiation of domesticated soybeans. In light of the evolution of the GIa gene, soybean domestication history for an early flowering phenotype is discussed.
关键词	Domestication Evolution Flowering time GIGANTEA Haplotype Soybean
学科领域	Evolutionary Biology ; Genetics & Heredity
DOI	10.1186/s12862-016-0653-9
收录类别	SCI
语种	英语
WOS关键词	GENETIC DIVERSITY ; CIRCADIAN CLOCK ; GLYCINE-SOJA ; DAY-LENGTH ; ARABIDOPSIS ; WILD ; POLYMORPHISM ; MATURITY ; CONSTANS ; ORTHOLOG
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000374128700004
出版者	BMC
文献子类	Article
出版地	LONDON
资助机构	Chinese Academy of SciencesChinese Academy of Sciences [XDA08010105] ; CAS/SAFEA International Partner Program for Creative Research Teams of Systematic and Evolutionary Botany
作者邮箱	chaoying@ibcas.ac.cn
作品OA属性	Green Published, gold
引用统计	被引频次：52[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/25055
专题	系统与进化植物学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Nanxincun 20Xiangshan, Beijing 100093, Peoples R China 2.Chinese Acad Sci, Grad Univ, Yuquan Rd 19, Beijing 100049, Peoples R China 3.Chinese Acad Agr Sci, Inst Crop Sci, Natl Key Facil Crop Gene Resources & Genet Improv, Key Lab Germplasm Utilizat MOA, Beijing 100081, Peoples R China 4.Chinese Acad Sci, Inst Genet & Dev Biol, Natl Key Lab Plant Genom, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yan,Gu, Yongzhe,Gao, Huihui,et al. Molecular and geographic evolutionary support for the essential role of GIGANTEAa in soybean domestication of flowering time[J]. BMC EVOLUTIONARY BIOLOGY,2016,16.
APA	Wang, Yan.,Gu, Yongzhe.,Gao, Huihui.,Qiu, Lijuan.,Chang, Ruzhen.,...&He, Chaoying.(2016).Molecular and geographic evolutionary support for the essential role of GIGANTEAa in soybean domestication of flowering time.BMC EVOLUTIONARY BIOLOGY,16.
MLA	Wang, Yan,et al."Molecular and geographic evolutionary support for the essential role of GIGANTEAa in soybean domestication of flowering time".BMC EVOLUTIONARY BIOLOGY 16(2016).

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