Acclimation of leaf photosynthesis and respiration to warming in field‐grown wheat

2. Zero hunger 0301 basic medicine 571 S1 warming Genotype Victoria Acclimatization Sustainable Development Goals Temperature Carbon Dioxide 15. Life on land SDG 13 Global Warming heat stress Oxygen Plant Leaves 03 medical and health sciences climate change Seeds Photosynthesis dark respiration Triticum
DOI: 10.1111/pce.13971 Publication Date: 2020-12-07T11:53:41Z
ABSTRACT
Abstract Climate change and future warming will significantly affect crop yield. The capacity of crops to dynamically adjust physiological processes (i.e., acclimate) might improve overall performance. Understanding quantifying the degree acclimation in field could ensure better parameterization Earth System models predictions We hypothesized that for field‐grown wheat, when measured at a common temperature (25°C), grown under warmer conditions would exhibit acclimation, leading enhanced performance Acclimation was defined as (a) decreased rates net photosynthesis 25°C ( A 25 ) coupled with lower maximum carboxylation V cmax ), (b) reduced leaf dark respiration (both terms O 2 consumption R _O CO efflux _CO (c) ratio. Field experiments were conducted over two seasons 20 wheat genotypes, sown three different planting dates, test these hypotheses. Leaf‐level ‐based traits , did not show classic responses we hypothesized; by contrast, changes dark_ observed. These findings have implications predictive assume similar response among world.
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