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Exploring high temperature responses of photosynthesis and respiration to improve heat tolerance in wheat

Exploring high temperature responses of photosynthesis and respiration to improve heat tolerance in wheat

Posch, Bradley C. ORCID: 0000-0003-0924-6608, Kariyawasam, Buddhima C. ORCID: 0000-0002-4579-1577, Bramley, Helen ORCID: 0000-0003-0251-2942, Coast, Onoriode ORCID: 0000-0002-5013-4715, Richards, Richard A. ORCID: 0000-0002-0247-4037, Reynolds, Matthew P. ORCID: 0000-0002-4291-4316, Trethowan, Richard ORCID: 0000-0003-0105-875X and Atkin, Owen K. ORCID: 0000-0003-1041-5202 (2019) Exploring high temperature responses of photosynthesis and respiration to improve heat tolerance in wheat. Journal of Experimental Botany, 70 (19). pp. 5051-5069. ISSN 0022-0957 (Print), 1460-2431 (Online) (doi:https://doi.org/10.1093/jxb/erz257)

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Abstract

High temperatures account for major wheat yield losses annually and, as the climate continues to warm, these losses will probably increase. Both photosynthesis and respiration are the main determinants of carbon balance and growth in wheat, and both are sensitive to high temperature. Wheat is able to acclimate photosynthesis and respiration to high temperature, and thus reduce the negative affects on growth. The capacity to adjust these processes to better suit warmer conditions stands as a potential avenue toward reducing heat-induced yield losses in the future. However, much remains to be learnt about such phenomena. Here, we review what is known of high temperature tolerance in wheat, focusing predominantly on the high temperature responses of photosynthesis and respiration. We also identify the many unknowns that surround this area, particularly with respect to the high temperature response of wheat respiration and the consequences of this for growth and yield. It is concluded that further investigation into the response of photosynthesis and respiration to high temperature could present several methods of improving wheat high temperature tolerance. Extending our knowledge in this area could also lead to more immediate benefits, such as the enhancement of current crop models.

Item Type: Article
Uncontrolled Keywords: Abiotic stress, acclimation, carbon, heat, photosynthesis, respiration, stress, temperature, wheat
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
S Agriculture > S Agriculture (General)
Faculty / Department / Research Group: Faculty of Engineering & Science
Faculty of Engineering & Science > Natural Resources Institute
Faculty of Engineering & Science > Natural Resources Institute > Agriculture, Health & Environment Department
Last Modified: 10 Aug 2020 12:31
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
Selected for GREAT 2019: None
Selected for REF2021: None
URI: http://gala.gre.ac.uk/id/eprint/28742

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