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Mutation of CsARC6 affects fruit color and increases fruit nutrition in cucumber

文献类型： 外文期刊

作者： Sun, Weike 1 ; Li, Xu 2 ; Huang, Hongyu 3 ; Wei, Jingwei 1 ; Zeng, Fang 2 ; Huang, Yichao 1 ; Sun, Qingqing 2 ; Miao, Weili 3 ; Tian, Yongqiang 1 ; Li, Yuhe 4 ; Gao, Lihong 1 ; Li, Xin 1 ; Gao, Hongbo 2 ;

作者机构： 1.China Agr Univ, Coll Hort, Beijing Key Lab Growth & Dev Regulat Protected Veg, Beijing 100193, Peoples R China

2.Beijing Forestry Univ, Coll Biol Sci & Technol, Natl Engn Res Ctr Tree Breeding & Ecol Restorat, Beijing, Peoples R China

3.Tianjin Kernel Cucumber Res Inst, State Key Lab Vegetable Biobreeding, Tianjin 300192, Peoples R China

4.Tianjin Acad Agr Sci, Inst Cucumber Res, Tianjin 300192, Peoples R China

期刊名称：THEORETICAL AND APPLIED GENETICS （ 影响因子：5.4； 五年影响因子：5.7 ）

ISSN： 0040-5752

年卷期： 2023 年 136 卷 5 期

页码：

收录情况： SCI

摘要： Key messageA mutation of CsARC6 not only causes white fruit color in cucumber, but also affects plant growth and fruit quality.Fruit color of cucumber is a very important agronomic trait, but most of the genes affecting cucumber white fruit color are still unknow, and no further studies were reported on the effect of cucumber fruit quality caused by white fruit color genes. Here, we obtained a white fruit mutant em41 in cucumber by EMS mutagenesis. The mutant gene was mapped to a 548 kb region of chromosome 2. Through mutation site analysis, it was found to be a null allele of CsARC6 (CsaV3_2G029290). The Csarc6 mutant has a typical phenotype of arc6 mutant that mesophyll cells contained only one or two giant chloroplasts. ARC6 protein was not detected in em41, and the level of FtsZ1 and FtsZ2 was also reduced. In addition, FtsZ2 could not form FtsZ ring-like structures in em41. Although these are typical arc6 mutant phenotypes, some special phenotypes occur in Csarc6 mutant, such as dwarfness with shortened internodes, enlarged fruit epidermal cells, decreased carotenoid contents, smaller fruits, and increased fruit nutrient contents. This study discovered a new gene, CsARC6, which not only controls the white fruit color, but also affects plant growth and fruit quality in cucumber.

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