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Quantitative trait loci for glucosinolate accumulation in Brassica rapa leaves

文献类型： 外文期刊

作者： Lou, Ping 1 ; Zhao, Jianjun 1 ; He, Hongju 4 ; Hanhart, Corrie 3 ; Del Carpio, Dunia Pino 1 ; Verkerk, Ruud 4 ; Custer 1 ;

作者机构： 1.Wageningen Univ, Lab Plant Breeding, NL-6700 AJ Wageningen, Netherlands

2.Hebei Agr Univ, Hort Coll, Baoding 071001, Peoples R China

3.Wageningen Univ, Genet Lab, NL-6703 BD Wageningen, Netherlands

4.Wageningen Univ, Prod Design & Qual Management Grp, NL-6700 EV Wageningen, Netherlands

5.Natl Engn Res Ctr Vegetables, Beijing 100081, Peoples R China

6.Univ Wageningen & Res Ctr, NL-6708 PB Wageningen, Netherlands

7.Max Planck Inst Plant Breeding Res, D-50829 Cologne, Germany

关键词： brassica rapa; double haploid populations; glucosinolates; integrated map; quantitative trait loci (QTL)

期刊名称：NEW PHYTOLOGIST （ 影响因子：10.151； 五年影响因子：10.475 ）

ISSN： 0028-646X

年卷期： 2008 年 179 卷 4 期

页码：

收录情况： SCI

摘要： Glucosinolates and their breakdown products have been recognized for their effects on plant defense, human health, flavor and taste of cruciferous vegetables. Despite this importance, little is known about the regulation of the biosynthesis and degradation in Brassica rapa. Here, the identification of quantitative trait loci (QTL) for glucosinolate accumulation in B. rapa leaves in two novel segregating double haploid (DH) populations is reported: DH38, derived from a cross between yellow sarson R500 and pak choi variety HK Naibaicai; and DH30, from a cross between yellow sarson R500 and Kairyou Hakata, a Japanese vegetable turnip variety. An integrated map of 1068 cM with 10 linkage groups, assigned to the international agreed nomenclature, is developed based on the two individual DH maps with the common parent using amplified fragment length polymorphism (AFLP) and single sequence repeat (SSR) markers. Eight different glucosinolate compounds were detected in parents and F(1)s of the DH populations and found to segregate quantitatively in the DH populations. QTL analysis identified 16 loci controlling aliphatic glucosinolate accumulation, three loci controlling total indolic glucosinolate concentration and three loci regulating aromatic glucosinolate concentrations. Both comparative genomic analyses based on Arabidopsis-Brassica rapa synteny and mapping of candidate orthologous genes in B. rapa allowed the selection of genes involved in the glucosinolate biosynthesis pathway that may account for the identified QTL.

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