Drought tolerance in selected aerobic and upland rice varieties is driven by different metabolic and antioxidative responses.

ABSTRACT:

Main conclusions

Sugar-mediated osmotic acclimation and a strong antioxidative response reduce drought-induced biomass loss at the vegetative stage in rice. A clear understanding of the physiological and biochemical adaptations to water limitation in upland and aerobic rice can help to identify the mechanisms underlying their tolerance to low water availability. In this study, three indica rice varieties-IR64 (lowland), Apo (aerobic), and UPL Ri-7 (upland)-, that are characterized by contrasting levels of drought tolerance, were exposed to drought at the vegetative stage. Drought-induced changes in biomass, leaf metabolites and oxidative stress markers/enzyme activities were analyzed in each variety at multiple time points. The two drought-tolerant varieties, Apo and UPL Ri-7 displ

SUBMITTER: Melandri G 

PROVIDER: S-EPMC8233253 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature