Identification of promoter exchange at a male fertility restorer locus for cytoplasmic male sterility in radish (Raphanus sativus L.)

文献类型： 外文期刊

第一作者： Wang, Zhi Wei

作者： Wang, Zhi Wei;Cai, Qing Ze;Wang, Zhi Wei;De Wang, Chuan;Gao, Lei;Zhou, Yuan;Wang, Ting;De Wang, Chuan;Mei, Shi Yong;Mei, Shi Yong

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关键词： Cytoplasmic male sterility;Fertility restoration;Promoter exchange;Radish

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

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收录情况： SCI

摘要： The cytoplasmic male sterility (CMS)/nucleus-controlled fertility restoration (Rf) system is a major component that exploits hybrid vigor in crops. Here, we have identified a new pentatricopeptide repeat (PPR)-encoding allele at the RsRf3 locus linked to the fertility restoration to CMS in radish. This allele was named as RsRf3-5 and encodes a putative protein with 18 PPRs and a predicted mitochondrial targeting signal. Another allele RsRf3-6 encoding the same protein with RsRf3-5 possesses a different promoter region and has failed to restore fertility to CMS. The non-restoring allele RsRf3-7 encoding a predicted protein with 15 PPRs has an identical promoter region with RsRf3-6, suggesting that RsRf3-6 could result from a recent crossover between RsRf3-5 and RsRf3-7. Interestingly, the RsRf3-5 allele shows higher RNA expression levels in the CMS cytoplasmic background compared with the RsRf3-6 allele.

分类号： Q94

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