The overexpression of <i>ascorbate peroxidase</i> 2 (<i>APX2</i>) gene improves drought tolerance in maize.

ABSTRACT: Maize, a primary global food crop, is crucial for food security. In recent years, climatic and other abiotic stresses have led to frequent global droughts. Ascorbate peroxidase (APX) plays a vital role in the ascorbate-glutathione cycle. Under drought stress, APX effectively scavenges reactive oxygen species (ROS) produced by plants and maintains the normal growth and development of organisms. This study successfully amplified APX-related genes, and the ZmAPX2 gene was screened using expression analysis. pCAMBIA3301-ZmAPX2-Bar and pCXB053-ZmAPX2-Bar plant expression vectors were constructed and transformed into the maize inbred line H120. Drought tolerance of plants was analyzed by phenotypic characteristics, physiological and biochemical indices in T₂ generation positive

SUBMITTER: Gao B 

PROVIDER: S-EPMC11829862 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature