Melatonin-Stimulated Triacylglycerol Breakdown and Energy Turnover under Salinity Stress Contributes to the Maintenance of Plasma Membrane H⁺-ATPase Activity and K⁺/Na⁺ Homeostasis in Sweet Potato.

ABSTRACT: Melatonin (MT) is a multifunctional molecule in animals and plants and is involved in defense against salinity stress in various plant species. In this study, MT pretreatment was simultaneously applied to the roots and leaves of sweet potato seedlings [Ipomoea batatas (L.) Lam.], which is an important food and industry crop worldwide, followed by treatment of 150 mM NaCl. The roles of MT in mediating K⁺/Na⁺ homeostasis and lipid metabolism in salinized sweet potato were investigated. Exogenous MT enhanced the resistance to NaCl and improved K⁺/Na⁺ homeostasis in sweet potato seedlings as indicated by the low reduced K⁺ content in tissues and low accumulation of Na⁺ content in the shoot. Electrophysiological experiment

SUBMITTER: Yu Y 

PROVIDER: S-EPMC5835075 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature