Time-resolved multiomics analysis of the genetic regulation of maize kernel moisture

查看全文 作　　者：Jianzhou [1,2]Qu;Shutu [1,2]Xu;Xiaonan [1,2]Gou;Hao [1,2]Zhang;Qian [1,2]Cheng;Xiaoyue [1,2]Wang;Chuang [1,3]Ma;Jiquan [1,2]Xue

机构地区：[1]The Key Laboratory of Biology and Genetic Improvement of Maize in Arid Area of Northwest Region,Northwest A&F University,Yangling 712100,Shaanxi,China;[2]Maize Engineering&Technology Research Centre,College of Agronomy,Northwest A&F University,Yangling 712100,Shaanxi,China;[3]State Key Laboratory of Crop Stress Biology for Arid Areas,Center of Bioinformatics,College of Life Sciences,Northwest A&F University,Yangling 712100,Shaanxi,China

出　　处：《The Crop Journal》索引2023年第11卷第1期,共11页

基　　金：supported by Natural Science Foundation of Shaanxi Province(S2021-JC-WT-006);the National Key Research and Development Program of China(2018YFD0100200);the China Postdoctoral Science Foundation(2018M633588);the China Agriculture Research System(CARS-02-77)。 摘　　要：Maize kernel moisture content(KMC)at harvest greatly affects mechanical harvesting,transport and storage.KMC is correlated with kernel dehydration rate(KDR)before and after physiological maturity.KMC and KDR are complex traits governed by multiple quantitative trait loci(QTL).Their genetic architecture is incompletely understood.We used a multiomics integration approach with an association panel to identify genes influencing KMC and KDR.A genome-wide association study using time-series KMC data from 7 to 70 days after pollination and their transformed KDR data revealed respectively 98and 279 loci significantly associated with KMC and KDR.Time-series transcriptome and proteome datasets were generated to construct KMC correlation networks,from which respectively 3111 and 759 module genes and proteins were identified as highly associated with KMC.Integrating multiomics analysis,several promising candidate genes for KMC and KDR,including Zm00001d047799 and Zm00001d035920,were identified.Further mutant experiments showed that Zm00001d047799,a gene encoding heat shock 70 kDa protein 5,reduced KMC in the late stage of kernel development.Our study provides resources for the identification of candidate genes influencing maize KMC and KDR,shedding light on the genetic architecture of dynamic changes in maize KMC. 关键词：MAIZE Kernel moisture Kernel dehydration rate GWAS Multiomics

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Time-resolved multiomics analysis of the genetic regulation of maize kernel moisture

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