Root carbon and protein metabolism associated with heat tolerance

Journal of Experimental Botany
Bingru HuangJichen Xu

Abstract

Extensive past efforts have been taken toward understanding heat tolerance mechanisms of the aboveground organs. Root systems play critical roles in whole-plant adaptation to heat stress, but are less studied. This review discusses recent research results revealing some critical physiological and metabolic factors underlying root thermotolerance, with a focus on temperate perennial grass species. Comparative analysis of differential root responses to supraoptimal temperatures by a heat-adapted temperate C3 species, Agrostis scabra, which can survive high soil temperatures up to 45 °C in geothermal areas in Yellow Stone National Park, and a heat-sensitive cogeneric species, Agrostis stolonifera, suggested that efficient carbon and protein metabolism is critical for root thermotolerance. Superior root thermotolerance in a perennial grass was associated with a greater capacity to control respiratory costs through respiratory acclimation, lowering carbon investment in maintenance for protein turnover, and efficiently partitioning carbon into different metabolic pools and alternative respiration pathways. Proteomic analysis demonstrated that root thermotolerance was associated with an increased maintenance of stability and less degr...Continue Reading

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Citations

Dec 11, 2013·PloS One·Weimin LiYuyang Wang
May 6, 2016·Plant Physiology and Biochemistry : PPB·Moses Kwame AidooShimon Rachmilevitch
May 31, 2016·The Science of the Total Environment·Tadeja SaviAndrea Nardini
Oct 25, 2016·Journal of Plant Physiology·María Benlloch-GonzálezManuel Benlloch
Jul 15, 2017·Frontiers in Plant Science·Shah FahadJianliang Huang
Apr 29, 2021·Plant Cell Reports·Noushina IqbalFrancisco J Corpas
Sep 25, 2021·Journal of Environmental Quality·Theivanayagam MaharajanSavarimuthu Ignacimuthu

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