Molecular characteristics of two new waxy mutations in China waxy maize

文献类型： 外文期刊

第一作者： Wu Xiaoyang

作者： Wu Xiaoyang;Chen Dan;Lu Yuqing;Liu Weihua;Yang Xinming;Li Xiuquan;Du Juan;Li Lihui;Chen Dan;Chen Dan;Chen Dan;Chen Dan

作者机构：

关键词： China waxy maize;Waxy mutation;Transposon;Origin area

期刊名称：MOLECULAR BREEDING （ 影响因子：2.589； 五年影响因子：2.75 ）

ISSN： 1380-3743

年卷期： 2017 年 37 卷 3 期

页码：

收录情况： SCI

摘要： The waxy gene mutation causes waxy maize grain to have a sticky quality. China has numerous waxy maize landraces and is thought to be the place of origin of waxy maize. The most abundant waxy maize resources in China are located in the Yunnan province and its surrounding areas. We collected 57 waxy maize landraces from Yunnan province and cloned and sequenced the waxy gene from its fourth to eighth exon. Two new waxy gene mutations, named wx-Cin4 and wx-124, were identified. The wx-Cin4 mutation is a 466-bp retrotransposon inserted into exon six. The wx-124 mutation is a 116-bp miniature inverted-repeat transposable element inserted into exon seven. This is the first time a 124-type mutation has been found in a maize waxy gene. The discovery of the two specific waxy mutations from landraces collected in Yunnan province provides new evidence supporting the hypothesis that China is the origin area for waxy maize.

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