Genome-wide profiling of GRAS genes in flax (<i>Linum usitatissimum</i> L.) reveals <i>LuGRAS30</i> as a key regulator of drought stress resistance.

ABSTRACT: GRAS genes are indispensable for modulating plant growth, developmental patterning, and adaptive responses to biotic and abiotic stress conditions. In this study, 99 LuGRAS genes were identified in the flax genome. Phylogenetic analysis classified them into 10 subfamilies: HAM, DELLA, DLT, SCL3, LAS, SCL4/7, SCR, SCL, SHR, and PAT1. Gene structure and motif analyses revealed that LuGRAS genes within the same clade exhibited conserved exon-intron organization and motif architectures. Promoter analysis showed that most LuGRAS genes contained cis-regulatory elements responsive to plant hormones (MeJA and abscisic acid) and abiotic stresses, including anaerobic induction, low temperature, and drought inducibility. MiRNA target prediction indicated that lus-miR395 is the pr

SUBMITTER: Bao Y 

PROVIDER: S-EPMC12380220 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature