Gene Details:

  • Gene ID:
  • Gene Symbol: HaHSFA9
  • Gene Name: heat stress transcription factor HSFA9
  • Genome:
  • Species: Helianthus annuus

Functional Descriptions:

  • The HaDREB2 transcription factor enhances basal thermotolerance and longevity of seeds through functional interaction with HaHSFA9.
  • HaDREB2 and HaHSFA9 were conjointly overexpressed in seeds, we observed positive effects on seed longevity, beyond those observed with overexpression of HaHSFA9 alone.
  • In sunflower embryos this factor, HaHSFA9,trans-activated promoters with poor consensus heat-shockcis-elements, including that of the seed-specificHahsp17.6G1 gene.
  • Mutations that improved the heat-shockcis-element consensus at the Hahsp17.7G4promoter impaired transient activation by HaHSFA9 in sunflower embryos. The same mutations did not affect heat-shock-induced gene expression of this promoter in transgenic tobacco plants but reduced the developmental activation by endogenous heat-shock transcription factors (HSFs) in seeds.
  • The ectopic overexpression of a seed-specific transcription factor, HaHSFA9, confers tolerance to severe dehydration in vegetative organs.
  • Our results strongly indicate that HaHSFA9 is a transcription factor critically involved in the developmental activation of Hahsp17.6G1 and in that of similar target genes as Hahsp17.7G4.

Literature:

Gene Resources:

Orthologs:

Sequences:

  • CDS Sequence:
  • Protein Sequence: