Wheat Responses and Tolerance to High Temperature
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Hexaploid wheat (Triticum aestivum) is a globally important crop. Heat stress dramatically reduces wheat yield and quality, and model predictions indicate that global wheat production will fall by 6% per 1 °C increase in temperature. Correspondingly, wheat has developed a series of molecular mechanisms to cope with climate variations and to protect themselves from injury and damage. Therefore, investigation of how wheat responds to elevated temperatures will provide important strategies to help develop new varieties adapted to temperature variations, but the underlying molecular mechanisms are still largely unknown. In this review, we focused on the recent studies of heat responses in wheat from omics perspective and shed light on understanding heat-responsive mechanisms that gene expression, protein synthesis, and epigenetic modification are significantly altered when subjected to heat stress. With the development of wheat transformation technique, it would be applicable to modify heat responses by manipulating expression patterns of related genes, and the omics findings paved the way to identify candidate genes improving heat tolerance in wheat.
KeywordsWheat Heat stress Transcriptome Proteome Epigenome
- Gill BS, Appels R, Botha-Oberholster AM, Buell CR, Bennetzen JL, Chalhoub B, Chumle F, Dvorak J, Iwanaga M, Keller B, Li WL, McCombie WR, Ogihara Y, Quetier F, Sasaki T (2004) A workshop report on wheat genome sequencing: international genome research on wheat consortium. Genetics 168:1087–1096CrossRefGoogle Scholar
- Jenner CF (1994) Starch synthesis in the kernel of wheat under high-temperature conditions. Aust J Plant Physiol 21:791–806Google Scholar
- Kumar RR, Goswami S, Sharma SK, Singh K, Gadpayle KA, Kumar N, Rai GK, Singh M, Rai RD (2012) Protection against heat stress in wheat involves change in cell membrane stability, antioxidant enzymes, osmolyte, H2O2 and transcript of heat shock protein. Int J Plant Physiol Biochem 4:83–91Google Scholar
- Kumar RR, Goswami S, Sharma SK, Kala YK, Rai GK, Mishra DC, Grover M, Singh GP, Pathak H, Rai A, Chinnusamy V, Rai RD (2015b) Harnessing next generation sequencing in climate change: RNA-Seq analysis of heat stress-responsive genes in wheat (triticum aestivum l.). Omics 19:632–647CrossRefGoogle Scholar