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Characterization and Fine Mapping of Two White Panicle Genes with Duplicated Effect in Rice

文献类型： 外文期刊

作者： Lv, Wenkai 1 ; Hu, Hui 1 ; He, Liping 1 ; Zhang, Xiancheng 1 ; Ou, Xiaoxue 1 ; Chen, Huoyun 1 ; Yu, Sibin 4 ; Xu, Jianlon 1 ;

作者机构： 1.Yangtze Univ, Coll Agr, Hubei Key Lab Waterlogging Disaster & Agr Use Wet, Hubei Collaborat Innovat Ctr Grain Ind, Jingzhou 434025, Peoples R China

2.Chinese Acad Agr Sci, Inst Crop Sci, Beijing 100081, Peoples R China

3.Chinese Acad Agr Sci, Shenzhen Inst Breeding & Innovat, Shenzhen 518120, Peoples R China

4.Huazhong Agr Univ, Coll Plant Sci & Technol, Natl Key Lab Crop Genet Improvement, Wuhan 430070, Hubei, Peoples R China

5.Guangdong Acad Agr Sci, Rice Res Inst, Guangdong Prov Key Lab New Technol Rice Breeding, Guangzhou 510640, Guangdong, Peoples R China

6.Ningbo Acad Agr Sci, Ningbo 315040, Zhejiang, Peoples R China

7.Wenzhou Acad Agr Sci, Southen Zhejiang Key Lab Crop Breeding, Wenzhou 325006, Peoples R China

关键词： White panicle; Chloroplast number; Duplicated effect; Fine mapping

期刊名称：INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY （ 影响因子：0.822； 五年影响因子：0.906 ）

ISSN： 1560-8530

年卷期： 2018 年 20 卷 12 期

页码：

收录情况： SCI

摘要： Photosynthesis provides food and energy for all organisms on Earth, but their genetic basis particularly in rice panicle is unknown. In this study, the characterization of GZ-wp, a new rice white panicle mutant from the progeny of indica thermosensitive genic male sterile line Guangzhan 63-4S (GZ63-4S) with seeds treated by ethylmethane sulfonate was described. The results showed white panicle at heading stage and normal phenotype in other organs at whole developing stages, and some yield related traits decreased. Chlorophyll content accumulation reduced in GZ-wp. Transmission electron microscopy analysis suggested normal chloroplast structure but decreased chloroplast numbers. Genetic analysis indicated the white panicle was controlled by two independent recessive nuclear genes with duplicated effect, designed as wp5 and wp6. Finally, wp5 and wp6 were fine mapped to 211 kb and 175 kb regions on chromosome 1 and 7, respectively. The present results will facilitate the cloning of these two genes and help in understanding the genetic basis of chloroplast development in rice panicle. (C) 2018 Friends Science Publishers

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