数字农科院2.0

Exogenous melatonin alleviates drought stress in cotton by enhancing root cortical activity and metabolic adaptation

文献类型： 外文期刊

作者： Haitao Zhang;Congcong Guo;Hongchun Sun;Lingxiao Zhu;Ke Zhang;Yongjiang Zhang;Zhanbiao Wang;Cundong Li;Liantao Liu

作者机构：

关键词： cotton;drought;living cortical area;melatonin;root absorption;root metabolism

期刊名称： Frontiers in Plant Science

ISSN： 1664-462X

年卷期： 2025 年 16 卷

页码：

收录情况： SCIE（2025版）

摘要： Introduction: The root cortex plays a critical role in water uptake and metabolic activity, directly influencing root functionality. However, despite melatonin’s known role in plant stress tolerance, its mechanisms in modulating root cortical anatomy and metabolic adaptation under drought remain unclear. This study examines the impact of exogenous melatonin on the root cortex of cotton under drought stress, focusing on its relationship with water uptake and drought resilience. Methods: Cotton plants (cv. Lumian 532) were subjected to drought stress (8% PEG 6000) with foliar application of melatonin (100 μmol/L) to evaluate its effects on root cortical integrity and water uptake. Results: The results demonstrated that melatonin application significantly increased living cortical area (LCA) and cortical thickness of roots under drought stress, and the effect was more obvious near the middle segment of the root (13 cm from the root tip). Melatonin also enhanced osmotic regulation, increased respiratory enzyme activity, and improved specific root length uptake rates for water and key nutrients. Furthermore, melatonin promoted root and above-ground growth, as evidenced by increases in root length, plant height, stem diameter, and leaf area. Notably, LCA positively correlated with osmotic substance accumulation, root respiration, and absorption capacity under drought conditions. Discussion: In conclusion, exogenous melatonin synergistically enhances drought resistance by maintaining cortical integrity, improving water absorption efficiency, and activating respiratory metabolism, thereby enhancing cotton growth and drought resistance. These findings underscore melatonin as a promising regulator for enhancing drought resistance.

分类号：

  • 相关文献

[1]Melatonin enhances drought tolerance by affecting jasmonic acid and lignin biosynthesis in wheat (Triticum aestivum L.). Mingzhao Luo,Daoping Wang,Pierre Delaplace,Yinghong Pan,Yongbin Zhou,Wensi Tang,Kai Chen,Jun Chen,Zhaoshi Xu,Youzhi Ma,Ming Chen. 2023

[2]Recent advances in melatonin regulation of drought tolerance in plants. Mingzhao Luo,Dandan Zhang,Wensi Tang,Pierre Delaplace,Ming Chen,Youzhi Ma. 2025

[3]Identification of SNAT Family Genes Suggests GhSNAT3D Functional Reponse to Melatonin Synthesis Under Salinity Stress in Cotton. Yuexin Zhang,Cun Rui,Yapeng Fan,Nan Xu,Hong Zhang,Jing Wang,Liangqing Sun,Maohua Dai,Kesong Ni,Xiugui Chen,Xuke Lu,Delong Wang,Junjuan Wang,Shuai Wang,Lixue Guo,Lanjie Zhao,Xixian Feng,Chao Chen,Wuwei Ye. 2022

[4]Melatonin receptor, GhCAND2-D5 motivated responding to NaCl signaling in cotton. Yuexin Zhang,Maohua Dai,Zhe Wu,Shuai Wang,Yapeng Fan,Kesong Ni,Xuke Lu,Xiaoyu Liu,Mengyue Liu,Wenhua Chen,Xiugui Chen,Delong Wang,Junjuan Wang,Lixue Guo,Lanjie Zhao,Xiuping Wang,Wuwei Ye. 2023

[5]Cloning and Expression of the Chloroplast Copper/Zinc-Superoxide Dismutase Gene in Upland Cotton （Gossypium hirsutum L.）. Yu Shuxun,Fan Shuli,Song Meizhen. 2007

[6]2015年全国棉花种植品种监测报告——播种品种(系)344个;数量减少83个;减幅19.4%. 毛树春,冯璐,芦建华. 2016

[7]2015年中国与美国棉花种植品种比较. 冯璐,毛树春. 2016

[8]兰州百合病毒病原的DAS-ELISA检测. 王发林,古勤生,刘芬,彭斌,刘丽锋. 2003

[9]GhMYB102 promotes drought resistance by regulating drought-responsive genes and ABA biosynthesis in cotton (Gossypium hirsutum L.). Liu R.,Shen Y.,Wang M.,Liu R.,Cui Z.,Li P.,Wu Q.,Shen Q.,Chen J.,Zhang S.,Liu S.,Ma H.,Pang C.,Ge C.. 2023

[10]Editorial: Identification and functional dissection of stress-responsive genes in cotton. Wu J.,Wang P.,Ge X.. 2022

[11]Genome-Wide Dissection of the Genetic Basis for Drought Tolerance in Gossypium hirsutum L. Races. Xinlei Guo,Yuanyuan Wang,Yuqing Hou,Zhongli Zhou,Runrun Sun,Tengfei Qin,Kunbo Wang,Fang Liu,Yuhong Wang,Zhongwen Huang,Yanchao Xu,Xiaoyan Cai. 2022

[12]Overexpression of cotton GhNAC072 gene enhances drought and salt stress tolerance in transgenic Arabidopsis. Teame Gereziher Mehari,Yuqing Hou,Yanchao Xu,Muhammad Jawad Umer,Margaret Linyerera Shiraku,Yuhong Wang,Heng Wang,Renhai Peng,Yangyang Wei,Xiaoyan Cai,Zhongli Zhou,Fang Liu. 2022

[13]Characterization of WOX genes revealed drought tolerance, callus induction, and tissue regeneration in Gossypium hirsutum. Muhammad Tajo S.,Pan Z.,He S.,Chen B.,KM Y.,Mahmood T.,Bello Sadau S.,Shahid Iqbal M.,Gereziher T.,Suleiman Abubakar U.,Joseph M.,Sammani T.,Geng X.,Du X.. 2022

[14]The crucial role of lateral root angle in enhancing drought resilience in cotton. Guo C.,Bao X.,Sun H.,Chen J.,Zhu L.,Zhang J.,Zhang H.,Zhang Y.,Zhang K.,Bai Z.,Li A.,Liu L.,Li C.. 2024

[15]Hypocotyl Elongation Inhibition Of Melatonin I.s Involved In Repressing B rassinosteroid Biosynthesis In Arabidopsis. Li, Fuguang,Zhuo, Fengping,Qanmber, Ghulam,Reiter, Russel J.,Yang, Zuoren,Song, Yun,Wei, Zhenzhen,Qanmber, Ghulam,Wang, Lingling,Ren, Maozhi,Yang, Zuoren,Li, Fuguang,Deng, Kexuan,Feng, Li,Xiong, Fangjie,Wei, Zhenzhen,Wang, Lingling,Zhuo, Fengping,Song, Yun. 2019

[16]Comparative Transcriptional Profiling of Melatonin Synthesis and Catabolic Genes Indicates the Possible Role of Melatonin in Developmental and Stress Responses in Rice. Wei, Yunxie,Zeng, Hongqiu,He, Chaozu,Shi, Haitao,Hu, Wei,Chen, Lanzhen. 2016

[17]Melatonin improves reprogramming efficiency and proliferation of bovine-induced pluripotent stem cells. Bai, Chunyu,Li, Xiangchen,Gao, Yuhua,Yuan, Ziao,Hu, Pengfei,Wang, Hui,Liu, Changqing,Guan, Weijun,Ma, Yuehui,Gao, Yuhua,Yuan, Ziao,Hu, Pengfei,Wang, Hui,Liu, Changqing. 2016

[18]Skin deiodinase profiles after melatonin manipulated in chinese inner Mongolia cashmere goats. Yue, Chunwang,Du, Lixin,Zhu, Xiaoping,Kong, Xianghao,Zhang, Wei,Jia, Zhihai. 2007

[19]Glutathione-dependent induction of local and systemic defense against oxidative stress by exogenous melatonin in cucumber (Cucumis sativus L.). Li, Hao,He, Jie,Yang, Xiaozhen,Luo, Dan,Wei, Chunhua,Ma, Jianxiang,Zhang, Yong,Yang, Jianqiang,Zhang, Xian,Li, Xin. 2016

[20]Melatonin inhibits apoptosis and improves the developmental potential of vitrified bovine oocytes. Zhao, Xue-Ming,Hao, Hai-Sheng,Du, Wei-Hua,Zhao, Shan-Jiang,Wang, Hao-Yu,Wang, Na,Wang, Dong,Liu, Yan,Qin, Tong,Zhu, Hua-Bin. 2016

作者其他论文 更多>>