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Genetic research

Researchers Uncover Key to Stress Resilience in Petunia

Strategic Insights

— 1 min read

Researchers at Chengdu Normal University in China have made a groundbreaking discovery in plant research, identifying the gene family responsible for stress resilience in petunia plants. The study, published in the journal Horticulturae, explored the role of trehalose-6-phosphate synthase (TPS) and trehalose-6-phosphate phosphatase (TPP) genes in abiotic stress responses. According to the research, these genes are critical for cellular integrity and stress adaptation in plants, and their synthesis relies on TPS and TPP. The study found that the TPS and TPP genes in wild petunia progenitors, P. axillaris and P. inflata, underwent a genome-wide analysis, revealing 10 TPS and 8-9 TPP genes in each species.

Key Takeaways:

  • The study identified 10 TPS and 8-9 TPP genes in wild petunia progenitors P. axillaris and P. inflata.
  • Phylogenetic analysis revealed petunia TPS proteins cluster into two clades, while TPP proteins were classified into three clades, showing closer evolutionary ties to tomato homologs.
  • Cis-acting elements profiling identified hormone- and stress-responsive regulatory elements, such as ABRE and TC-rich repeats.
  • Expression analysis under drought, heat, and salt stress revealed dynamic temporal regulation, with specific genes being upregulated at different times under different stress conditions.
  • The research concluded that the functional diversity within TPS/TPP families governs stress-specific responses and provides a foundational resource for enhancing stress resilience and ornamental value in petunia.

Statistics:

  • 10 TPS genes were identified in P. axillaris and P. inflata.
  • 8-9 TPP genes were identified in P. axillaris and P. inflata.
  • 2 clades of petunia TPS proteins were classified in phylogenetic analysis.
  • 3 clades of petunia TPP proteins were classified in phylogenetic analysis.
  • 695: The article number in the Horticulturae journal where the study was published.

Sources:

  • Genome-Wide Identification and Characterization of Trehalose-6-Phosphate Synthase/Phosphatases Gene Family in Petunia and Their Expression Profiling Under Abiotic Stresses. Horticulturae, 2025,11(6):695.
  • Horticulturae is published by MDPI AG.
  • A free version of the journal article is available at https://doi-org.sdpl.idm.oclc.org/10.3390/horticulturae11060695.
  • The publisher for Horticulturae is MDPI AG.

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