数字农科院2.0

Genotypic Differences in Maize Root Morphology in Response to Low-Nitrogen Stress

文献类型： 外文期刊

作者： Xichao Sun;Peng Wang;Guohua Mi

作者机构：

关键词： genotype;maize;nitrogen;root morphology

期刊名称： Agronomy

ISSN： 2073-4395

年卷期： 2025 年 15 卷 2 期

页码：

收录情况： SCIE（2025版）

摘要： The root system plays an important role in the efficient absorption of nitrogen (N), but there is limited understanding of the growth characteristics of maize roots of different genotypes and their dynamic response to N supply. In this study, landraces in the 1950s and modern hybrids, modern hybrids and their parents, inbred lines with different N efficiency and standard inbred line B73 were used, combined with the dynamic culture method, to observe the dynamic changes in root growth under long-term N stress conditions. The results showed that there were genotypic differences in the response of maize roots to low N. Low N enhances root growth earlier than the increases in shoot-to-root dry matter allocation. With the extension of low N stress, the root biomass of each genotype basically increased significantly from 3 to 6 days and then was gradually reversed by high N on the 12th day. As for shoot biomass, 11 genotypes began to decrease significantly from 6 to 9 days after low-N stress. The total axial root length, primary root length, seminal root length, and the first and second whorl crown root length of seven genotypes were increased more or less under low N. With the extension of N stress, the number of third and fourth whorl crown roots decreased significantly, which indicated that regulation of root elongation is earlier than that of crown root initiation. As the degree of low-N stress increased, the trend of total lateral root length changes in different genotypes could be divided into three categories, indicating that the response of lateral root growth to low-N stress is genotype-dependent. With the advancement of the breeding process, the roots of modern hybrids become smaller but more responsive to low-N stress. The root phenotypes of Zhengdan958 and Xianyu335 come from different genetic models. Compared with embryonic roots, the crown roots of B73 have a more active role in adapting to low-N stress. Shoot N concentration may reflect plant internal N status, which plays a regulatory role in root morphogenesis.

分类号：

  • 相关文献

[1]Comparative transcriptome analysis of different nitrogen responses in low-nitrogen sensitive and tolerant maize genotypes. Qing guo DU,Juan YANG,Shah SYED MUHAMMAD SADIQ,Rong xin YANG,Jing juan YU,Wen xue LI. 2021

[2]Effects of Solar Radiation on Dry Matter Distribution and Root Morphology of High Yielding Maize Cultivars. Xiaoxia Guo,Yunshan Yang,Huifang Liu,Guangzhou Liu,Wanmao Liu,Yonghong Wang,Rulang Zhao,Bo Ming,Ruizhi Xie,Keru Wang,Shaokun Li,Peng Hou. 2022

[3]ComparativecharacterizationofmicroRNAprofilesofdifferentgenotypesofToxoplasmagondii. 周东辉,MinjunXu,SiyangHuang,FurongZhao,AlasdairJ.Nisbet,HuiqunSong,XingquanZhu. 2013

[4]Strand-specific RNA-Seq transcriptome analysis of genotypes with and without low-phosphorus tolerance provides novel insights into phosphorus-use efficiency in maize. Qingguo Du, Kai Wang, Cheng Xu, Cheng Zou, Chuanxiao Xie, Yunbi Xu & Wen-Xue Li. 2016

[5]Crop residue, manure and fertilizer in dryland maize under reduced tillage in northern China: I grain yields and nutrient use efficiencies. Wang, Xiaobin,Cai, Dianxiong,Hoogmoed, Willem B.,Perdok, Udo D.,Oenema, Oene. 2007

[6]Establishment of The Crop Growth and Nitrogen Nutrition State Model Using Spectral Parameters Canopy Cover. Tao Zhi-qiang,Bagum, Shamim Ara,Ma Wei,Zhou Bao-yuan,Fu Jin-dong,Cui Ri-xian,Sun Xue-fang,Zhao Ming. 2016

[7]Nutrient requirements for maize in China based on QUEFTS analysis. Xu, Xinpeng,He, Ping,Chuan, Limin,Qiu, Shaojun,Zhao, Shicheng,Zhou, Wei,He, Ping,Pampolino, Mirasol F.,Johnston, Adrian M..

[8]Crop residue, manure and fertilizer in dryland maize under reduced tillage in northern China: II nutrient balances and soil fertility. Wang, Xiaobin,Hoogmoed, Willem B.,Cai, Dianxiong,Perdok, Udo D.,Oenema, Oene. 2007

[9]Crop productivity and nutrient use efficiency as affected by long-term fertilisation in North China Plain. Wang, Yingchun,Wang, Enli,Smith, Chris J.,Wang, Yingchun,Huang, Shaomin,Wang, Daolong,Ma, Yibing,Wang, Ligang.

[10]Analysis of metabolic differences in maize in different growth stages under nitrogen stress based on UPLC-QTOF-MS. Guipei Song,Yanli Lu,Yuhong Wang,Caie Nie,Mengze Xu,Lei Wang,Youlu Bai. 2023

[11]Evaluation of maize root growth and genome-wide association studies of root traits in response to low nitrogen supply at seedling emergence. Xichao Sun,Wei Ren,Peng Wang,Fanjun Chen,Lixing Yuan,Qingchun Pan,Guohua Mi. 2021

[12]Nitrogen supply affects ion homeostasis by modifying root Casparian strip formation through the miR528-LAC3 module in maize. Guo, Yu,Wang, Yafei,Chen, Huan,Du, Qingguo,Wang, Zhonghua,Gong, Xiaoping,Sun, Qing,Li, Wen-Xue. 2023

[13]Inversion of maize leaf nitrogen using UAV hyperspectral imagery in breeding fields. Qiwen Cheng,Bingsun Wu,Huichun Ye,Yongyi Liang,Yingpu Che,Anting Guo,Zixuan Wang,Zhiqiang Tao,Wenwei Li,Jingjing Wang. 2024

[14]The Physiological Mechanisms and Hurdles of Efficient Water-Nitrogen Utilization in Maize Production: A Review. Sun, Xichao,Zhao, Qian,Gao, Jia,Liu, Zheng. 2025

[15]DissectingthemaizedirectandindirectdefenseresponseagainstAsianCornBorer. 汪海,李圣彦,查象敏,朱莉,黄大昉,郎志宏. 2015

[16]TheDifferentialTranscriptionNetworkbetweenEmbryoandEndospermintheEarlyDevelopingMaizeSeed. XiaoduoLu,DijunChen,DefengShu,ZhaoZhang,WeixuanWang,ChristianKlukas,Ling-lingChen,YunliuFan,MingChen,ChunyiZhang. 2015

[17]Earthworms enhanced winter oilseed rape (Brassica napus L.) growth and nitrogen uptake. Zhang, Shujie,Chao, Ying,Zhang, Chunlei,Cheng, Jing,Li, Jun,Ma, Ni.

[18]Genetic Dissection Of Root Morphological T.raits Related To Nitrogen U se Efficiency In Brassica Napus L. Under Two Contrasting Nitrogen Conditions. Wang, Xinfa,Liu, Guihua,Wang, Jie,Wang, Hanzhong,Dun, Xiaoling,Shi, Jiaqin. 2017

[19]Mycorrhizal efficacy of trifoliate orange seedlings on alleviating temperature stress. Wu, Q. S.,Wu, Q. S.. 2011

[20]Morpho-physiological traits of sugar beet exposed to salt stress. Stevanato, Piergiorgio,Cacco, Giovanni,Gui, Geng,Biancardi, Enrico,Abenavoli, Maria Rosa,Roman, Alessandro,Sorgona, Agostino.

作者其他论文 更多>>