Protection of photosynthesis in desiccation-tolerant resurrection plants

Journal of Plant Physiology
Dinakar ChallabathulaDorothea Bartels

Abstract

Inhibition of photosynthesis is a central, primary response that is observed in both desiccation-tolerant and desiccation-sensitive plants affected by drought stress. Decreased photosynthesis during drought stress can either be due to the limitation of carbon dioxide entry through the stomata and the mesophyll cells, due to increased oxidative stress or due to decreased activity of photosynthetic enzymes. Although the photosynthetic rates decrease in both desiccation-tolerant and sensitive plants during drought, the remarkable difference lies in the complete recovery of photosynthesis after rehydration in desiccation-tolerant plants. Desiccation of sensitive plants leads to irreparable damages of the photosynthetic membranes, in contrast the photosynthetic apparatus is deactivated during desiccation in desiccation-tolerant plants. Desiccation-tolerant plants employ different strategies to protect and/or maintain the structural integrity of the photosynthetic apparatus to reactivate photosynthesis upon water availability. Two major mechanisms are distinguished. Homoiochlorophyllous desiccation-tolerant plants preserve chlorophyll and thylakoid membranes and require active protection mechanisms, while poikilochlorophyllous plants...Continue Reading

Citations

Jul 21, 2020·Journal of Experimental Botany·Pierre-Nicolas Boulc'hIvan Couée
Apr 25, 2020·Proceedings of the National Academy of Sciences of the United States of America·Jeremy PardoRobert VanBuren
Oct 14, 2020·BMC Plant Biology·Gerardo Alejo-JacuindeLuis Herrera-Estrella
Apr 24, 2021·American Journal of Botany·Daniela BoanaresMarcel G C França
Nov 9, 2021·Journal of Experimental Botany·Hui Min Olivia OungHelmut Kirchhoff

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