Flowering time variation in oilseed rape (Brassica napus L.) is associated with allelic variation in the FRIGIDA homologue BnaA.FRI.a

doi:10.1093/jxb/err249

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	Flowering time variation in oilseed rape (Brassica napus L.) is associated with allelic variation in the FRIGIDA homologue BnaA.FRI.a
	Wang, Nian 1,2; Qian, Wei 1,3; Suppanz, Ida 1; Wei, Lijuan 3; Mao, Bizeng 1,4; Long, Yan 5; Meng, Jinling 5; Mueller, Andreas E.1; Jung, Christian 1
刊名	JOURNAL OF EXPERIMENTAL BOTANY
	2011-11-01
卷号	62 期号:15 页码:5641-5658
关键词	Association mapping B. napus flowering time FRI growth type QTL vernalization requirement
ISSN号	0022-0957
DOI	10.1093/jxb/err249
英文摘要	Oilseed rape (Brassica napus L.) is a major oil crop which is grown worldwide. Adaptation to different environments and regional climatic conditions involves variation in the regulation of flowering time. Winter types have a strong vernalization requirement whereas semi-winter and spring types have a low vernalization requirement or flower without exposure to cold, respectively. In Arabidopsis thaliana, FRIGIDA (FRI) is a key regulator which inhibits floral transition through activation of FLOWERING LOCUS C (FLC), a central repressor of flowering which controls vernalization requirement and response. Here, four FRI homologues in B. napus were identified by BAC library screening and PCR-based cloning. While all homologues are expressed, two genes were found to be differentially expressed in aerial plant organs. One of these, BnaA.FRI.a, was mapped to a region on chromosome A03 which co-localizes with a major flowering time quantitative trait locus in multiple environments in a doubled-haploid mapping population. Association analysis of BnaA.FRI.a revealed that six SNPs, including at least one at a putative functional site, and one haplotype block, respectively, are associated with flowering time variation in 248 accessions, with flowering times differing by 13-19 d between extreme haplotypes. The results from both linkage analysis and association mapping indicate that BnaA.FRI.a is a major determinant of flowering time in oilseed rape, and suggest further that this gene also contributes to the differentiation between growth types. The putative functional polymorphisms identified here may facilitate adaptation of this crop to specific environments through marker-assisted breeding.
资助项目	Deutsche Forschungsgemeinschaft[DFG JU 205/14-1] ; National Natural Science Foundation of China[30900788]
WOS研究方向	Plant Sciences
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000297373500034
内容类型	期刊论文
源URL	[http://202.127.146.157/handle/2RYDP1HH/835]
专题	中国科学院武汉植物园
通讯作者	Mueller, Andreas E.
作者单位	1.Univ Kiel, Plant Breeding Inst, D-24098 Kiel, Germany 2.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Plant Germplasm Enhancement & Special Agr, Wuhan 430074, Peoples R China 3.Southwest Univ, Coll Agron & Biotechnol, Chongqing 400716, Peoples R China 4.Zhejiang Univ, Inst Biotechnol, State Key Lab Rice Biol, Hangzhou 310029, Zhejiang, Peoples R China 5.Huazhong Agr Univ, Natl Key Lab Crop Genet Improvement, Wuhan 430070, Peoples R China
推荐引用方式 GB/T 7714	Wang, Nian,Qian, Wei,Suppanz, Ida,et al. Flowering time variation in oilseed rape (Brassica napus L.) is associated with allelic variation in the FRIGIDA homologue BnaA.FRI.a[J]. JOURNAL OF EXPERIMENTAL BOTANY,2011,62(15):5641-5658.
APA	Wang, Nian.,Qian, Wei.,Suppanz, Ida.,Wei, Lijuan.,Mao, Bizeng.,...&Jung, Christian.(2011).Flowering time variation in oilseed rape (Brassica napus L.) is associated with allelic variation in the FRIGIDA homologue BnaA.FRI.a.JOURNAL OF EXPERIMENTAL BOTANY,62(15),5641-5658.
MLA	Wang, Nian,et al."Flowering time variation in oilseed rape (Brassica napus L.) is associated with allelic variation in the FRIGIDA homologue BnaA.FRI.a".JOURNAL OF EXPERIMENTAL BOTANY 62.15(2011):5641-5658.