Gibberellic acid-mediated transcriptional divergence underlies cold stress adaptation in two diploid cotton species.

ABSTRACT:

Background

The diploid cotton species Gossypium thurberi (D1) and Gossypium trilobum (D8) exhibit significant divergence in cold stress tolerance despite their close phylogenetic relationship.

Methods

To explore the genetic basis of this difference, we conducted a comparative transcriptomic analysis under cold stress at 4 °C, identifying 697 and 311 species-specific differentially expressed genes (DEGs) in G. thurberi and G. trilobum, respectively. Functional enrichment analysis was performed to investigate the biological pathways associated with these DEGs. Additionally, hormone levels, particularly gibberellic acid (GA), were measured to assess their role in cold stress responses.

Results

The DEGs in both species were significantly enrich

SUBMITTER: Wang D 

PROVIDER: S-EPMC12229150 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature