Genome-wide characterization of the cotton E2F/DP gene family and a negative role of GhDEL1_D08 in salt tolerance.

ABSTRACT:

Background

E2F/DP is a transcription factor family essential for regulating the cell cycle during plant growth, development, and stress response. However, its role in cotton, a crop of significant economic importance, particularly concerning salt tolerance, remains unexplored.

Results

We systematically identified 70 E2F/DP genes across four cotton species, including the allopolyploids Gossypium hirsutum and G. barbadense, as well as the parental diploids A-genome G. arboreum and D-genome G. raimondii. Phylogenetic analysis classified these genes into three subfamilies (E2F, DP, and DEL), with notable expansion of the E2F subfamily in tetraploid cotton through local duplication events rather than tandem duplication. Promoter analysis revealed enrichment of stress- and hormone

SUBMITTER: Liu Q 

PROVIDER: S-EPMC12781725 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature