Increasing seed mass and oil content in transgenic Arabidopsis by the overexpression of wri1-like gene from Brassica napus

文献类型： 外文期刊

第一作者： Liu, Jing

作者： Liu, Jing;Hua, Wei;Zhan, Gaomiao;Wei, Fang;Wang, Xinfa;Liu, Guihua;Wang, Hanzhong

作者机构：

关键词： Bnwri1;Rapeseed;Oil content;Seed size;Polymorphism

期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：4.27； 五年影响因子：4.816 ）

ISSN：

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收录情况： SCI

摘要： Rapeseed (Brassica napus) is one of the most important edible oilseed crops in the world and is increasingly used globally to produce bio-diesel. Therefore, increasing oil content of oilseed corps is of importance economically in both food and oil industries. The wri1 genes are differentially expressed in B. napus lines with different oil content. To investigate the effects of B. napus WRI1 (BnWRI1) on oil content, two Bnwri1 genes with different lengths, Bnwri1-1 and Bnwri1-2, were identified and sequenced. Homology analysis shows 80% amino acids of Bnwri1s are homologous to Arabidopsis thaliana WRI1 (AtWRI1). Overexpression of Bnwri1 cDNAs driven by cauliflower mosaic virus 35S-promoter in 51 transgenic A. thaliana lines resulted in 10-40% increased seed oil content and enlarged seed size and mass. Detailed analysis on transgenic embryos indicates an increased cell size other than cell number. In addition, Bnwri1 sequence polymorphism is highly related to oil content (p < 0.001). Taking together, Bnwri1 has potential applications in food and oil industries and in rapeseed breeding.

分类号： Q945

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