Advances and opportunities in unraveling cold-tolerance mechanisms in the world’s primary staple food crops

Jan, S and Rustgi, S and Barmukh, R and Shikari, A B and Leske, B and Bekuma, A and Sharma, D and Ma, W and Kumar, U and Kumar, U and Bohra, A and Varshney, R K and Mir, R R (2023) Advances and opportunities in unraveling cold-tolerance mechanisms in the world’s primary staple food crops. The Plant Genome. pp. 1-23. ISSN 1940-3372

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Temperatures below or above optimal growth conditions are among the major stressors affecting productivity, end-use quality, and distribution of key staple crops including rice (Oryza sativa), wheat (Triticum aestivum), and maize (Zea mays L.). Among temperature stresses, cold stress induces cellular changes that cause oxidative stress and slowdown metabolism, limit growth, and ultimately reduce crop productivity. Perception of cold stress by plant cells leads to the activation of cold-responsive transcription factors and downstream genes, which ultimately impart cold tolerance. The response triggered in crops to cold stress includes gene expression/suppression, the accumulation of sugars upon chilling, and signaling molecules, among others. Much of the information on the effects of cold stress on perception, signal transduction, gene expression, and plant metabolism are available in the model plant Arabidopsis but somewhat lacking in major crops. Hence, a complete understanding of the molecular mechanisms by which staple crops respond to cold stress remain largely unknown. Here, we make an effort to elaborate on the molecular mechanisms employed in response to low-temperature stress. We summarize the effects of cold stress on the growth and development of these crops, the mechanism of cold perception, and the role of various sensors and transducers in cold signaling. We discuss the progress in cold tolerance research at the genome, transcriptome, proteome, and metabolome levels and highlight how these findings provide opportunities for designing cold-tolerant crops for the future.

Item Type: Article
Divisions: Center of Excellence in Genomics and Systems Biology
Uncontrolled Keywords: rice, wheat, maize, temperature stresses, cold stress, oxidative stress, slowdown metabolism, limit growth, crop productivity
Subjects: Others > Genetics and Genomics
Others > Climate Change
Depositing User: Mr Nagaraju T
Date Deposited: 29 Feb 2024 11:27
Last Modified: 29 Feb 2024 11:27
Official URL:
Acknowledgement: The authors acknowledge the NIFA Hatch/Multi-state grant (S009) for financial support to Sachin Rustgi. Rajeev K. Varshney is thankful to the Food Futures Institute, Murdoch University, Australia, for supporting this research in part. The authors acknowldge the Department of Biotechnology, Ministry of Sciences and Technology, India, for financial support to Reyazul Rouf Mir under the project (BT/Ag/Network/Wheat/2019-20).
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