Genetic Mechanisms of Cold Signaling in Wheat (Triticum aestivum L.)

Abstract

Cold stress is a major environmental factor affecting the growth, development, and productivity of various crop species. With the current trajectory of global climate change, low temperatures are becoming more frequent and can significantly decrease crop yield. Wheat (Triticum aestivum L.) is the first domesticated crop and is the most popular cereal crop in the world. Because of a lack of systematic research on cold signaling pathways and gene regulatory networks, the underlying molecular mechanisms of cold signal transduction in wheat are poorly understood. This study reviews recent progress in wheat, including the ICE-CBF-COR signaling pathway under cold stress and the effects of cold stress on hormonal pathways, reactive oxygen species (ROS), and epigenetic processes and elements. This review also highlights possible strategies for improving cold tolerance in wheat.

Effect of Low Temperature on Content of Primary Metabolites in Two Wheat Genotypes Differing in Cold Tolerance

“…On Earth, approximately 64% of the land is subject to a seasonal drop in temperature below 0 • C [2]; meanwhile, 26% of this territory is used for agricultural plant cultivation [3]. The frequency of sudden cold spells is increasing, and this significantly reduces crop yields [4]. Plants are sustainable in low temperatures throughout their life, from seed germination to maturation.…”

A TaSnRK1α Modulates TaPAP6L‐Mediated Wheat Cold Tolerance through Regulating Endogenous Jasmonic Acid

“…[19] Phytohormones are important regulators of plant growth and development, as well as abiotic stress response signal networks, suggesting that plant hormones interact with signals for plant growth and environmental stresses. [14] Phytohormone regulation in wheat cold stress is another strategy to study wheat cold tolerance. Exogenous abscisic acid (ABA) enhances cold tolerance, possibly by increasing the activity of antioxidant enzymes.…”

“…[ 13 ] Overexpression of glucose‐6‐phosphate dehydrogenase, 6‐phosphogluconate dehydrogenase, and trehalose 6‐phosphate synthase 11 from winter wheat enhanced the cold tolerance in Arabidopsis, showing a potential value of these genes in wheat cold‐tolerance breeding. [ 14 , 15 , 16 ] The plastid‐lipid‐associated protein 6 ( PAP6 )‐silenced wheat plants showed significantly decreased cold tolerance. [ 17 ] Silencing of glycine‐rich RNA‐binding protein 2, CBS domain‐containing protein chloroplastic‐like, and cold acclimation protein Wcor410c reduced cold tolerance in common wheat.…”