Genome-wide association and RNA-seq analyses reveal genes linked to salt stress in peanut (<i>Arachis hypogaea</i> L.).

ABSTRACT: Salt stress adversely affects seed germination, seedling growth, and development, considerably impacting peanut (Arachis hypogaea L.) production. However, their genetic and genomic responses to salinity remain poorly understood. To identify candidate genes associated with salt tolerance, a genome-wide association study (GWAS) of 295 peanut genotypes and RNA sequencing (RNA-seq) analysis of two contrasting accessions (tolerant and susceptible) exposed to 200 mM NaCl at the seedling stage were conducted. Leaf scorch, sodium ion concentration, proline content, and chlorophyll content were evaluated as primary indicators of salt tolerance. GWAS identified 10 single-nucleotide polymorphisms significantly associated with salt stress. Transcriptome analysis of root tissues revealed 1,734 d

SUBMITTER: Zou K 

PROVIDER: S-EPMC12695741 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature