Crops ›› 2018, Vol. 34 ›› Issue (5): 1-9.doi: 10.16035/j.issn.1001-7283.2018.05.001

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Research Advances on Physiological Basis and Gene Discovery for Thermal Tolerance in Crops

Wu Hao1,2,Li Yanmin1,Xie Chuanxiao1   

  1. 1 Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
    2 School of Life Sciences, Anhui Agricultural University, Hefei 230036, Anhui, China
  • Received:2018-04-19 Revised:2018-08-21 Online:2018-10-15 Published:2018-10-12
  • Contact: Chuanxiao Xie

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Abstract:

Thermal or heat stress is an environmental limiting factor in crop production which affects the growth and development of crops leading to yields reduction and lower quality of agricultural products. The research on physiology, biochemistry, gene discovery and molecular mechanism of plant heat resistance will lay the foundation for the agricultural production and breeding of the new varieties of heat tolerance. Thermal stress affecting on crops vegetative stage and reproductive stage, the anthesis and grain-filling stage that are critical for yield formation was reviewed in this paper. Four major kinds of the physiological thermal response, namely membrane fluidity change, protein unfolding, cytoskeleton depolymerization and metabolite change were introduced. The gene discovery of Hsf regulation under heat stress was summarized. We also prospected the genetic improvements, creating germplasm, and developing new biotechnology for heat tolerance in crops. This paper provides references for the study of physiological basis, gene discovery, molecular mechanism and breeding pathways for crop heat resistance.

Key words: Crop, Thermal stress, Physiological response, Heat shock transcription factor, Thermotolerance gene, Thermotolerance germplasm

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