Genome-wide identification of APX genes in flax (Linum usitatissimum) and functional characterization of LuAPX12 in osmotic and salinity stress responses.

ABSTRACT:

Background

Ascorbate peroxidase (APX) is a crucial antioxidant enzyme involved in regulating hydrogen peroxide levels and signal transduction pathways associated with development and stress responses. However, information about the APX gene family and its evolution and gene function in flax has not been reported.

Results

This study identified 12 APX genes in flax and analyzed their evolutionary relationships, motif compositions, gene structures, and cis-acting elements, while also predicting potential protein-protein interactions with 226 members of the AP2 family. DREB2C, DREB1A, TOE1, and RAP2.4 likely interact with LuAPX2, LuAPX3, LuAPX7, and LuAPX8. RT-qPCR analysis of the flax APX genes revealed significant differential expression in response to mannitol-induced drought

SUBMITTER: Li YD 

PROVIDER: S-EPMC12278490 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature