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Genetic research

Genome-Wide Identification of HSP70 Gene Family in Hybrid Tea Roses Reveals Key Roles in Heat Stress Response

Strategic Insights

— 1 min read

Research conducted by Kunming University of Science and Technology, in collaboration with other institutions, has shed light on the importance of the HSP70 gene family in hybrid tea roses during heat stress. The study found that 113 HSP70 transcription factors (TFs) were identified in the genome of hybrid tea rose, which could be classified into three subfamilies with diverse physical and chemical properties. The research also revealed that some HSP70 genes were highly expressed in response to heat stress, indicating their potential role in plant heat stress response.

Key Takeaways:

  • A total of 113 HSP70 transcription factors (TFs) were identified in the genome of hybrid tea rose, with 51 TFs belonging to subfamily II.
  • Phylogenetic analysis showed that the identified TFs could be classified into three subfamilies, with varying physical and chemical properties.
  • Gene expression analysis revealed that 57 HSP70 genes had strong organ specificity and response to heat stress in hybrid tea rose plants.
  • Two HSP70 genes, RhHSP70-69 and RhHSP70-88, were significantly increased after heat stress, indicating their importance in plant heat stress response.
  • The study found that RhHSP70-69 and RhHSP70-88 proteins were located in the nucleus, providing insights into their regulatory roles in plant growth and development.
  • The research concluded that the HSP70 gene family plays a crucial role in the hybrid tea rose heat stress response and could be utilized for future molecular breeding of heat-tolerant plants.

Statistics:

  • 113 HSP70 transcription factors (TFs) were identified in the genome of hybrid tea rose.
  • 51 TFs belonged to subfamily II.
  • 57 HSP70 genes were found to have strong organ-specific expression and response to heat stress in hybrid tea rose plants.
  • RhHSP70-69 and RhHSP70-88 genes were significantly increased after heat stress.
  • 2-4 exons and introns were observed in the promoters of some HSP70 genes.

Sources:

  • Genome-Wide Identification of HSP70 Gene Family and Their Roles in the Hybrid Tea Rose Heat Stress Response. Horticulturae, 2025,11(6):643.
  • MDPI AG: horticulturae.mdpi.com/ (free version available at https://doi.org/10.3390/horticulturae11060643)
  • Kunming University of Science and Technology, Faculty of Architecture and City Planning, Kunming 650021, People's Republic of China (Xinyu Yan, Faculty, Kunming University of Science and Technology)

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