文献类型： 外文期刊
作者： Wang, Lu 1 ; Jiang, Xiaohan 1 ; Zhao, Li 1 ; Wang, Furong 4 ; Liu, Yudi 1 ; Zhou, Hui 1 ; He, Huaping 4 ; Han, Yuepeng 1 ;
作者机构： 1.Chinese Acad Sci, CAS Key Lab Plant Germplasm Enhancement Specialty, Wuhan Bot Garden, Innovat Acad Seed Design, Wuhan, Peoples R China
2.Chinese Acad Sci, Core Bot Gardens, Ctr Econ Bot, Wuhan 430074, Peoples R China
3.Univ Chinese Acad Sci, 19A Yuquanlu, Beijing 100049, Peoples R China
4.Hubei Acad Agr Sci, Inst Fruit Tree & Tea, Wuhan 430209, Peoples R China
5.Chinese Acad Sci, Sino African Joint Res Ctr, Wuhan, Peoples R China
关键词： Prunus persica; Fruit acidity; Linkage mapping; Organic acids; Small protein
期刊名称：PLANT MOLECULAR BIOLOGY （ 影响因子：4.076； 五年影响因子：4.89 ）
ISSN： 0167-4412
年卷期：
页码：
收录情况： SCI
摘要： Key message A candidate gene, designate PpRPH, in the D locus was identified to control fruit acidity in peach. Fruit acidity has a strong impact on organoleptic quality of fruit. Peach fruit acidity is controlled by a large-effect D locus on chromosome 5. In this study, the D locus was mapped to a 509-kb interval, with two markers, 5dC720 and 5C1019, co-segregating with the non-acid/acid trait of peach fruit. Within this interval, a candidate gene encoding a putative small protein, designated PpRPH, showed a consistency between gene expression and fruit acidity, with up- and down-regulation in non-acidic and acidic fruits, respectively. Transient ectopic expression of PpRPH in tobacco leaves caused an increase of pH by approximately 40% compared to the control transformed with empty vector. Whereas, the concentrations of citrate and malate decreased significantly by 22% and 37%, respectively, with respect to the empty vector control. All these results suggest that PpRPH is a strong candidate gene of the D locus. These findings contribute to our overall understanding of the complex mechanism underlying fruit acidity in peach as well as that in other fruit crops.
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