Overexpression of a Mitogen-Activated Protein Kinase SlMAPK3 Positively Regulates Tomato Tolerance to Cadmium and Drought Stress.

ABSTRACT: Mitogen-activated protein kinases (MAPKs) activation is a common defense response of plants to a range of abiotic stressors. SlMPK3, a serine-threonine protein kinase, has been reported as an important member of protein kinase cascade that also functions on plant stress tolerance. In this study, we cloned SlMPK3 from tomato and studied its role in cadmium (Cd²⁺) and drought tolerance. The results showed that transcripts of SlMAPK3 differentially accumulated in various plant tissues and were remarkably induced by different abiotic stressors and exogenous hormone treatments. Overexpression of SlMAPK3 increased tolerance to Cd²⁺ and drought as reflected by an increased germination rate and improved seedling growth. Furthermore, transgenic plan

SUBMITTER: Muhammad T 

PROVIDER: S-EPMC6385007 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature