TY - JOUR
T1 - Plant photosynthesis under heat stress
T2 - Effects and management
AU - Zahra, Noreen
AU - Hafeez, Muhammad Bilal
AU - Ghaffar, Abdul
AU - Kausar, Abida
AU - Al Zeidi, Maryam
AU - Siddique, Kadambot H. M.
AU - Farooq, Muhammad
PY - 2023/2
Y1 - 2023/2
N2 - Climate change and global warming have increased the frequency of extreme heat stress events that severely affect plant production. Photosynthesis is an intricate heat-sensitive physiological process. Heat stress affects CO2 assimilation, photochemical reactions, D1 and D2 protein turnover, and chlorophyll biosynthesis. Heat stress -induced damage to chloroplast downregulates important chloroplast components and inactivates heat -sensitive proteins, including RuBisCo activase, causing redox imbalance, reducing photosynthetic efficiency, and possibly causing cell death. As all photochemical processes in the Calvin cycle in the stroma and thylakoid lamellae of the chloroplast are prone to heat stress injury, these organelles are the primary activators of cellular heat stress responses and signaling. This review describes approaches to protect crop plants against heat-induced photochemical damage and discusses chloroplast responses, sensitivity, and retrograde signaling that contribute to the sensitivity and tolerance of photosynthetic apparatus.
AB - Climate change and global warming have increased the frequency of extreme heat stress events that severely affect plant production. Photosynthesis is an intricate heat-sensitive physiological process. Heat stress affects CO2 assimilation, photochemical reactions, D1 and D2 protein turnover, and chlorophyll biosynthesis. Heat stress -induced damage to chloroplast downregulates important chloroplast components and inactivates heat -sensitive proteins, including RuBisCo activase, causing redox imbalance, reducing photosynthetic efficiency, and possibly causing cell death. As all photochemical processes in the Calvin cycle in the stroma and thylakoid lamellae of the chloroplast are prone to heat stress injury, these organelles are the primary activators of cellular heat stress responses and signaling. This review describes approaches to protect crop plants against heat-induced photochemical damage and discusses chloroplast responses, sensitivity, and retrograde signaling that contribute to the sensitivity and tolerance of photosynthetic apparatus.
KW - Heat stress
KW - High temperature
KW - Chloroplast
KW - Photosynthesis
KW - Retrograde signaling
KW - Tolerance
KW - HIGH-TEMPERATURE STRESS
KW - TERMINAL HEAT
KW - EXOGENOUS APPLICATION
KW - ANTIOXIDANT CAPACITY
KW - DROUGHT STRESSES
KW - WINTER-WHEAT
KW - D1 PROTEIN
KW - TOLERANCE
KW - RICE
KW - MAIZE
UR - http://www.scopus.com/inward/record.url?scp=85144332975&partnerID=8YFLogxK
U2 - 10.1016/j.envexpbot.2022.105178
DO - 10.1016/j.envexpbot.2022.105178
M3 - Review article
SN - 0098-8472
VL - 206
JO - Environmental and Experimental Botany
JF - Environmental and Experimental Botany
M1 - 105178
ER -