Time-course transcriptomic analysis reveals transcription factors involved in modulating nitrogen sensibility in maize
文献类型： 外文期刊
作者： Zhang, Mingliang 1 ; Wang, Yuancong 1 ; Wu, Qi 1 ; Sun, Yangming 1 ; Zhao, Chenxu 1 ; Ge, Min 1 ; Zhou, Ling 1 ; Zhang, Tifu 1 ; Zhang, Wei 2 ; Qian, Yiliang 2 ; Ruan, Long 2 ; Zhao, Han 1 ;
作者机构： 1.Jiangsu Acad Agr Sci, Inst Crop Germplasm & Biotechnol, Jiangsu Prov Key Lab Agrobiol, Nanjing 210014, Jiangsu, Peoples R China
2.Anhui Acad Agr Sci, Crop Inst, Hefei 230041, Anhui, Peoples R China
关键词： Maize; Genotype; N response; DiffCoEx network; MADS26
期刊名称：JOURNAL OF GENETICS AND GENOMICS （ 影响因子：7.1； 五年影响因子：6.4 ）
ISSN： 1673-8527
年卷期： 2025 年 52 卷 3 期
页码：
收录情况： SCI
摘要： Nitrogen (N) serves both as a vital macronutrient and a signaling molecule for plants. Unveiling key regulators involved in N metabolism helps dissect the mechanisms underlying N metabolism, which is essential for developing maize with high N use efficiency. Two maize lines, B73 and Ki11, show differential chlorate and low-N tolerance. Time-course transcriptomic analysis reveals that the expression of N utilization genes (NUGs) in B73 and Ki11 have distinct responsive patterns to nitrate variation. By the coexpression networks, significant differences in the number of N response modules and regulatory networks of transcription factors (TFs) are revealed between B73 and Ki11. There are 23 unique TFs in B73 and 41 unique TFs in Ki11. MADS26 is a unique TF in the B73 N response network, with different expression levels and N response patterns in B73 and Ki11. Overexpression of MADS26 enhances the sensitivity to chlorate and the utilization of nitrate in maize, at least partially explaining the differential chlorate tolerance and low-N sensitivity between B73 and Ki11. The findings in this work provide unique insights and promising candidates for maize breeding to reduce unnecessary N overuse. Copyright (c) 2024, The Authors. Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, and Genetics Society of China. Published by Elsevier Limited and Science Press. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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