A predicted NEDD8 conjugating enzyme gene identified as a Capsicum candidate Rf gene using bulk segregant RNA sequencing
文献类型： 外文期刊
作者： Wei, Bingqiang 1 ; Bosland, Paul W. 2 ; Zhang, Zhenghai 3 ; Wang, Yongfu 1 ; Zhang, Gaoyuan 1 ; Wang, Lanlan 4 ; Yu, J 1 ;
作者机构： 1.Gansu Agr Univ, Coll Hort, 1 Yingmeng Village, Lanzhou 730070, Peoples R China
2.New Mexico State Univ, Plant & Environm Sci Dept, POB 30003, Las Cruces, NM 88001 USA
3.Chinese Acad Agr Sci, Minist Agr, Key Lab Vegetable Genet & Physiol, Inst Vegetables & Flowers, 12 Zhongguancun Nandajie, Beijing 100081, Peoples R China
4.Gansu Acad Agr Sci, Vegetable Inst, 1 Nongkeyuan New Village, Lanzhou 730070, Peoples R China
期刊名称：HORTICULTURE RESEARCH （ 影响因子：6.793； 五年影响因子：6.589 ）
ISSN： 2662-6810
年卷期： 2020 年 7 卷 1 期
页码：
收录情况： SCI
摘要： Cytoplasmic male sterility (CMS) is an important tool for producing F-1 hybrids, which can exhibit heterosis. The companion system, restorer-of-fertility (Rf), is poorly understood at the molecular level and would be valuable in producing restorer lines for hybrid seed production. The identity of the Rf gene in Capsicum (pepper) is currently unclear. In this study, using bulked segregant RNA sequencing (BSR-seq), a strong candidate Rf gene, Capana06g002866, which is annotated as a NEDD8 conjugating enzyme E2, was identified. Capana06g002866 has an ORF of 555 bp in length encoding 184 amino acids; it can be cloned from F-1 plants from the hybridization of the CMS line 8A and restorer line R1 but is not found in CMS line 8A. With qRT-PCR validation, Capana06g002866 was found to be upregulated in restorer accessions compared to sterile accessions. The relative expression in flower buds increased with the developmental stage in F-1 plants, while the expression was very low in all flower bud stages of the CMS lines. These results provide new insights into the Rf gene in pepper and will be useful for other crops utilizing the CMS system.
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