Characterization of the genetic and regulatory networks associated with sugar and acid metabolism in apples via an integrated strategy
文献类型： 外文期刊
作者： Shen, Fei 1 ; Hu, Chenyang 2 ; Huang, Xin 3 ; Wu, Ruigang 3 ; Luo, Shuzhen 2 ; Xu, Chengnan 2 ; Zhang, Hong 2 ; Wang, Xuan 4 ; Zhao, Jirong 2 ;
作者机构： 1.Beijing Acad Agr & Forestry Sci, Inst Biotechnol, Beijing, Peoples R China
2.Yanan Univ, Coll Life Sci, Shanxi Key Lab Chinese Jujube, Yanan, Shanxi, Peoples R China
3.Hebei Univ Engn, Coll Landscape & Ecol Engn, Handan, Hebei, Peoples R China
4.Hebei Normal Univ Sci & Technol, Qinhuangdao, Hebei, Peoples R China
关键词： apple; sugar; acid; RNA-seq; QTL; integrated strategy; genome sequencing
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：6.627； 五年影响因子：7.255 ）
ISSN： 1664-462X
年卷期： 2022 年 13 卷
页码：
收录情况： SCI
摘要： Although sugars and acids have a substantial influence on the taste of apple fruits, the genetic and regulatory networks underlying their metabolism in fruit remain insufficiently determined. To fully decipher the genetic basis of the accumulation of sugars and acids in apple fruits, we adopted an integrated strategy that included time-course RNA-seq, QTL mapping, and whole-genome sequencing to examine two typical cultivars ('HanFu' and 'Huahong') characterized by distinctive flavors. Whole-genome sequencing revealed substantial genetic variation between the two cultivars, thereby providing an indication of the genetic basis of the distinct phenotypes. Constructed co-expression networks yielded information regarding the intra-relationships among the accumulation of different types of metabolites, and also revealed key regulatory nodes associated with the accumulation of sugars and acids, including the genes MdEF2, MdPILS5, and MdGUN8. Additionally, on the basis of QTL mapping using a high-density genetic map, we identified a series of QTLs and functional genes underlying vital traits, including sugar and acid contents. Collectively, our methodology and observations will provide an important reference for further studies focusing on the flavor of apples.
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