QTL mapping and transcriptome analysis identify candidate genes influencing water–nitrogen interaction in maize

作     者：Kunhui He Yakun Zhang Wei Ren Pengyun Chen Jianchao Liu Guohua Mi Fanjun Chen Qingchun Pan Kunhui He;Yakun Zhang;Wei Ren;Pengyun Chen;Jianchao Liu;Guohua Mi;Fanjun Chen;Qingchun Pan

作者机构：State Key Laboratory of Nutrient Use and ManagementCollege of Resources and Environmental SciencesChina Agricultural UniversityBeijing 100193China College of AgronomyNorthwest A&F UniversityYangling 712100ShaanxiChina Sanya Institute of China Agricultural UniversitySanya 572000HainanChina 

出 版 物：《The Crop Journal》 (作物学报（英文版）)

年 卷 期：2023年第11卷第6期

页      面：1872-1883页

核心收录：

学科分类：09[农学] 0901[农学-作物学] 

基　　金：the National Key Research and Development Program of China(2021YFD1200700) the National Natural Science Foundation of China(32272076) the Hainan Provincial Science and Technology Plan Sanya Yazhou Bay Science and Technology City Joint Project(320LH011) the Inner Mongolia Foundation for the Conversion of Scientific and Technological Achievements(2021CG0026) 

主　　题：Quantitative trait loci Water Nitrogen Interaction Maize 

摘      要：Water and nitrogen fertilization are the key factors limiting maize *** genetic basis of interactions between maize genotype,water,and nitrogen is unclear.A recombinant inbred line(RIL)maize population was evaluated for seven yield and five agronomic traits under four water and nitrogen conditions:water stress and low nitrogen,water stress and high nitrogen,well-watered and low nitrogen,and well-watered and high *** eight,six,and six traits varied in response to genotype–water interactions,genotype–nitrogen interactions,and genotype–water–nitrogen *** a linkage map consisting of 896 single-nucleotide polymorphism markers and multipleenvironmental quantitative-trait locus(QTL)mapping,we identified 31 QTL,including 12 for genotype–water–nitrogen interaction,across the four treatments.A set of 8060 genes were differentially expressed among *** genetic analysis,gene co-expression,and functional annotation revealed two candidate genes controlling genotype–water–nitrogen interactions,affecting both leaf width and grain *** involved in abscisic acid biosynthesis and bZIP,NAC,and WRKY transcription factors participated in maize response to water and nitrogen *** results represent a step toward understanding the genetic regulatory network of maize that responds to water and nitrogen stress and provide a theoretical basis for the genetic improvement of both water-and nitrogen-use efficiency.