数字农科院2.0

Temporal dynamics of pre-flowering dry matter remobilization and post-flowering photosynthetic compensation in wheat under combined high temperature and drought stress

文献类型： 外文期刊

作者： Li, Qiao;Ye, Yangchun;Wang, Demei;Wang, Yanjie;Zhang, Min;Cai, Ruiguo;Zhao, Guangcai;Yang, Yushuang;Chang, Xuhong;Liu, Xiwei

作者机构：

关键词： Wheat;High temperature;Drought;Dry matter;Remobilization

期刊名称： PLANT GROWTH REGULATION

ISSN： 0167-6903

年卷期： 2025 年

页码：

收录情况： SCIE（2025版）

摘要： Pre-flowering total dry matter remobilization (PTDR) and post-flowering photosynthetic accumulation (PTPA) are critical for grain-filling under abiotic stress, yet their temporal dynamics and organ-specific contributions under combined high temperature (HT) and drought stress (DS) remain poorly understood. Through a two-year field study (2021-2023) with two wheat cultivars (Zhongmai36 and Jimai22), we investigated yield components, PTDR-PTPA coordination, and grain-filling dynamics under HT, DS, and combined drought-heat stress (DHS). The results demonstrated that stress treatments significantly reduced yield by 14.1-33.3% (Zhongmai36) and 14.9-29.5% (Jimai22), driven by declines in grain numbers per spike (7.0-18.4%) and 1000-grains weight (5.0-17.5%). Random Forest analysis revealed the contribution of 1000-grains weight to the yield variation under all stresses amounts to 55.1-59.1%, while grain numbers per spike dominated 56.1-70.3% for Jimai22 under DS and DHS. Additionally, pre-flowering total dry matter remobilization (PTDR) increased by 18.6-21.5% under DHS due to enhanced contributions from the stem-sheath and leaf, partially mitigating yield losses. However, post-flowering photosynthetic accumulation (PTPA) decreased by 7.5-50.8%, with the most severe reductions under DHS. Meanwhile, the PTDR/PTPA ratio rose significantly under DHS, highlighting compensatory remobilization under combined stresses. The timing and contribution of dry matter remobilization varied across organs and stress conditions. The stem-sheath contributions peaked at 10-20 days after stress (DAS) under HT and DS, while leaf remobilization occurred earlier (0-10 DAS). Cultivar-specific responses were evident. The Zhongmai36 showed greater drought tolerance but higher HT sensitivity, whereas Jimai22 prioritized maintaining grains per spike (GNS) under DHS, reflecting divergent adaptation strategies to concurrent stresses. These findings underscore the importance of breeding strategies targeting organ-specific remobilization efficiency and photosynthetic retention during grain-filling are critical for climate-resilient wheat production.

分类号：

  • 相关文献

[1]充分发掘保护利用生物多样性;促进农业可持续发展——《生物多样性与小麦改良》简评. 李祥洲. 1997

[2]Transgenerational impact of climatic changes on cotton production. Muhammad Awais Farooq,Waqas Shafqat Chattha,Muhammad Sohaib Shafique,Umer Karamat,Javaria Tabusam,Sumer Zulfiqar,Amir Shakeel. 2023

[3]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

[4]Genomic and Transcriptomic Dissection of the Large-Effect Loci Controlling Drought-Responsive Agronomic Traits in Wheat. Cao, Liangjing,Lyu, Mingjie,Wang, Jingyi,Wang, Xuan,Li, Xinchang,Jing, Ruilian,Liu, Jun,Hu, Xinwen. 2022

[5]Multivariate and Association Analyses of Quantitative Attributes Reveal Drought Tolerance Potential of Wheat (Triticum aestivum L.) Genotypes. Khan, Mueen Alam,Akram, Muhammad Waseem,Iqbal, Muhammad,Ahmed, Hafiz Ghulam Muhu-Din,Rehman, Abdul,Iqbal, Hafiz Syed M. Arslan,Alam, Beena. 2022

[6]The Effects of Foliar Supplementation of Silicon on Physiological and Biochemical Responses of Winter Wheat to Drought Stress during Different Growth Stages. Ning, Dongfeng,Zhang, Yingying,Li, Xiaojing,Qin, Anzhen,Huang, Chao,Fu, Yuanyuan,Gao, Yang,Duan, Aiwang. 2023

[7]DIW1 encoding a clade I PP2C phosphatase negatively regulates drought tolerance by de-phosphorylating TaSnRK1.1 in wheat. Wang, Jingyi,Li, Chaonan,Li, Long,Gao, Lifeng,Hu, Ge,Zhang, Yanfei,Reynolds, Matthew P.,Zhang, Xueyong,Jia, Jizeng,Mao, Xinguo,Jing, Ruilian. 2023

[8]Qtl Mapping For Yield And P.hotosynthetic Related Traits Under D ifferent Water Regimes In Wheat. Xu, YF,Li, SS,Li, LH,Ma, FF,Fu, XY,Shi, ZL,Xu, HX,Ma, PT,An, DG. 2017

[9]Identification of Genetic Loci Affecting Flag Leaf Chlorophyll in Wheat Grown under Different Water Regimes. Bin Yang,Xiaojie Wen,Hongwei Wen,Yanru Feng,Jiajia Zhao,Bangbang Wu,Xingwei Zheng,Chenkang Yang,Sanwei Yang,Ling Qiao,Jun Zheng. 2022

[10]Abscisic acid improves drought resilience, growth, physio-biochemical and quality attributes in wheat (Triticum aestivum L.) at critical growth stages. Bilal Zulfiqar,Muhammad Aown Sammar Raza,Muhammad Farrukh Saleem,Baber Ali,Muhammad Usman Aslam,Abdullah Ahmed Al-Ghamdi,Mohamed S. Elshikh,Mahmood Ul Hassan,Monika Toleikienė,Junaid Ahmed,Muhammad Rizwan,Rashid Iqbal. 2024

[11]A genome-wide association study identifies novel QTL for wheat yield stability under drought stress. Xiaoqiang Liu,Zhaolin Yang,Wenjia Hu,Sitong Liu,Runze Sun,Songsong Jin,Khandmaa Nergui,Guangyao Zhao,Lifeng Gao,Yongxiu Liu,Xin Deng. 2024

[12]Drought-induced assembly of rhizosphere mycobiomes shows beneficial effects on plant growth. Pan, Yanshuo,Liu, Binhui,Zhang, Wenying,Zhuang, Shan,Wang, Hongzhe,Chen, Jieyin,Xiao, Liang,Li, Yuzhong,Han, Dongfei. 2024

[13]Combined application of biochar and silicon nanoparticles enhance soil and wheat productivity under drought: Insights into physiological and antioxidant defense mechanisms. Bilal Zulfiqar,Muhammad Aown Sammar Raza,Muhammad Akhtar,Nan Zhang,Mamoona Hussain,Junaid Ahmad,Mostafa A. Abdel-Maksoud,Hossam Ebaid,Rashid Iqbal,Muhammad Usman Aslam,Mohamed A. El-Tayeb,Shiming Su. 2024

[14]Leaf morpho-anatomical traits regulate the differential responses of stomatal and mesophyll conductance to drought in rice and wheat. Yuhan Yang,Yingchao Li,Xiaolin Ma,Zhipeng Teng,Lu Yan,Shuoqi Chang,Shaobing Peng,Peng Hou,Yong Li. 2026

[15]30个小麦新品系抗条锈病基因分析及成株期抗病性评价. 冯晶,蔺瑞明,林凤,徐世昌. 2013

[16]小麦抗菌蛋白编码基因BS108的克隆及其转基因抗病小麦的创制. 李钊,周淼平,张增艳,庄洪涛,徐惠君,杜丽璞,叶兴国. 2010

[17]渗透调节物质及有机附加物对小麦体细胞胚发生影响的研究(英文). 孙朝霞,侯思宇,王玉国. 2008

[18]普通小麦品种辐射敏感性模糊聚类分析<英文>. 冯志杰,王琳清. 1992

[19]基因枪转化小麦主要轰击参数的优化. 闵东红,何莎,张彦,夏兰琴. 2013

[20]小麦矮缩病毒分子群体遗传结构研究. 刘艳,王锡锋,周广和. 2008

作者其他论文 更多>>