Growth, ionic homeostasis, and physiological responses of cotton under different salt and alkali stresses.

ABSTRACT: To better understand the mechanism of salt tolerance, we analyzed cotton growth and the ionomes in different tissues under different types of salt-alkali stress. Cotton was exposed to the soil salt and alkali stresses, NaCl, Na₂SO₄, and Na₂CO₃ + NaHCO₃, in a pot study. Salt and alkali stress significantly inhibited cotton growth, significantly reduced root length, surface area, and volume, and significantly increased relative electrical conductivity (REC) and malondialdehyde (MDA) content but also significantly increased antioxidant enzyme activities, and proline (Pro) content. The REC in leaves was higher under salt stress than under alkali stress, but the effects on Pro were in the order Na₂CO₃ + NaHCO₃

SUBMITTER: Guo H 

PROVIDER: S-EPMC7736318 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature