Location: Crop Germplasm ResearchTitle: Heat stress in cotton: an interactive review on predicted and unpredicted growth-yield anomalies and mitigating breeding strategies
|MAJEED, SAJID - University Of Agriculture - Pakistan|
|RANA, IQRAR AHMAD - University Of Agriculture - Pakistan|
|MUBARIK, MUHAMMAD SALMAN - University Of Agriculture - Pakistan|
|ATIF, RANA MUHAMMAD - University Of Agriculture - Pakistan|
|YANG, SEUNG HWAN - Chonnam National University|
|CHUNG, GYUHWA - Chonnam National University|
|JIA, YINHUA - Chinese Academy Of Agricultural Sciences|
|DU, XIONGMING - Chinese Academy Of Agricultural Sciences|
|AZHAR, MUHAMMAD TEHSEE - Bahauddin Zakariya University|
Submitted to: Agronomy
Publication Type: Review Article
Publication Acceptance Date: 9/9/2021
Publication Date: 9/12/2021
Citation: Majeed, S., Rana, I., Mubarik, M., Atif, R., Yang, S., Chung, G., Jia, Y., Du, X., Hinze, L.L., Azhar, M. 2021. Heat stress in cotton: An interactive review on predicted and unpredicted growth-yield anomalies and mitigating breeding strategies. Agronomy. https://www.mdpi.com/2073-4395/11/9/1825.
Interpretive Summary: The effects of high temperature stress on cotton are reviewed, including effects on germination of cotton seed, early root and shoot development, lateral plant development, floral development, yield and fiber quality. Several mechanisms of heat tolerance in cotton have been proposed, including antioxidant activity in response to oxidative stress, the role of heat shock proteins in keeping cellular equilibrium under heat stress, and the activity of small RNAs to regulate proteins produced in response to heat stress. Conventional plant breeding approaches have traditionally been used to mitigate the plant's response to heat stress. More recently, molecular and biotechnological approaches as well as genome editing have been explored to address this problem. High temperature exerts a negative impact on cotton growth and yield. The understanding of heat tolerance mechanisms and characterization of related genes is essential to develop stress tolerant cultivars for sustainable cotton production under changing climatic conditions.
Technical Abstract: The demand for cotton fibers is increasing due to growing global population while its production is facing unpredictable rise in temperature owing to rapidly changing climatic conditions. High temperature stress is a major stumbling block to agricultural production around the world. Therefore, the development of thermo-stable cotton cultivars is gaining popularity. Understanding the effects of heat stress on various stages of plant growth and development, and its tolerance mechanism is pre-requisite to initiate the cotton breeding programs to sustain lint yield without compromising its quality under high temperature stress conditions. Thus, cotton breeders should consider all the possible options, such as developing superior cultivars through traditional breeding, utilizing molecular markers and transgenic technologies, or using genome editing techniques to get desired features. Therefore, this review article was planned to discuss the possible effects of heat stress on cotton plants, tolerance mechanisms and possible breeding strategies.