Efficient Regulation of CO₂ Assimilation Enables Greater Resilience to High Temperature and Drought in Maize.

ABSTRACT: Increasing temperatures and extended drought episodes are among the major constraints affecting food production. Maize has a relatively high temperature optimum for photosynthesis compared to C₃ crops, however, the response of this important C₄ crop to the combination of heat and drought stress is poorly understood. Here, we hypothesized that resilience to high temperature combined with water deficit (WD) would require efficient regulation of the photosynthetic traits of maize, including the C₄-CO₂ concentrating mechanism (CCM). Two genotypes of maize with contrasting levels of drought and heat tolerance, B73 and P0023, were acclimatized at high temperature (38°C versus 25°C) under well-watered (WW) or WD conditions. The photosynthetic performanc

SUBMITTER: Correia PMP 

PROVIDER: S-EPMC8350398 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature