Genome-Wide Identification of the OPT Gene Family and Screening of Sb-Responsive Genes in <i>Brassica juncea</i>.

ABSTRACT: Antimony (Sb), a toxic metalloid, inhibits plant growth and threatens human health. Yellow Stripe-Like (YSL) proteins play crucial roles in metal ion transport and cellular homeostasis. While the OPT gene family has been characterized in some species, its genome-wide organization and functional involvement in Sb stress response remain unexplored in Brassica juncea. Here, we identified 47 high-confidence BjOPT genes and combined transcriptomic approaches to elucidate their regulatory roles under Sb stress. Phylogenetic tree, conserved motifs, and gene structure analyses consistently distinguished the BjOPT and BjYSL subfamilies. Comparative and collinearity analyses indicated that OPT genes in Brassica species (including B. rapa, B. nigra, and B.

SUBMITTER: Liu X 

PROVIDER: S-EPMC12609508 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature