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Antifungal agents

B-caryophyllene Reveals Antifungal Mechanism Against Root Rot Disease

Strategic Insights

— 2 min read

Scientists at the Yunnan University of Chinese Medicine in Kunming, People's Republic of China, have unraveled the antifungal mechanism of b-caryophyllene (BCP) in inhibiting conidial germination and mycelial growth of the pathogenic fungus Fusarium proliferatum, a primary cause of root rot disease in Panax notoginseng.

Researchers, led by Tian-Tian Li, employed RNA sequencing, chromatin immunoprecipitation sequencing, and in vitro antifungal experiments to investigate the effects of BCP on F. proliferatum. The results showed that BCP inhibited mycelial growth by 24.5% and conidial germination by 77.87% after treatment. The study also found that BCP triggered defense mechanisms, upregulating the expression of lipid metabolism genes associated with cell membrane repair. Furthermore, the research revealed that BCP decreased the expression of genes associated with conidial germination regulation, including transcriptional activator acu-15, serine/threonine protein phosphatases, and aldehyde dehydrogenases.

The study concluded that BCP regulates H3K36me3 modification levels to inhibit conidial germination and mycelial growth of F. proliferatum. This research provides a theoretical foundation for the development of novel plant-derived pesticides for root rot control. The study will be published in the journal BMC Microbiology.

Key Takeaways:

  • B-caryophyllene (BCP) inhibits mycelial growth of Fusarium proliferatum by 24.5% and conidial germination by 77.87% after treatment.
  • BCP triggers defense mechanisms, upregulating the expression of lipid metabolism genes associated with cell membrane repair.
  • The study revealed that BCP decreased the expression of genes associated with conidial germination regulation, including transcriptional activator acu-15, serine/threonine protein phosphatases, and aldehyde dehydrogenases.
  • BCP regulates H3K36me3 modification levels to inhibit conidial germination and mycelial growth of F. proliferatum.
  • The study provides a theoretical foundation for the development of novel plant-derived pesticides for root rot control.
  • The research was led by Tian-Tian Li from the Yunnan University of Chinese Medicine, Kunming, People's Republic of China.
  • Other researchers involved in the study include Yao Zhu, Shi-Wei Zhou, Xue-Jie Qin, You Li, Sulukkana Noiprasert, Kanyaphat Apiwongsrichai, Fu-Rong Xu, Xiao-Yun Liu, and Xian Dong.

Statistics:

  • BCP inhibited mycelial growth of F. proliferatum by 24.5%.
  • BCP inhibited conidial germination of F. proliferatum by 77.87%.
  • BCP upregulated the expression of 1693 differentially expressed genes (DEGs) and downregulated 1589 DEGs.
  • BCP treatment increased the extracellular conductivity of F. proliferatum by 2.6 times.
  • BCP treatment increased the Malondialdehyde content and superoxide dismutase activity of F. proliferatum by 1.45 times.

Sources:

  • Li, T.-T., et al. (2025). b-caryophyllene regulates H3K36me3 to inhibit conidial germination and mycelial growth of Fusarium proliferatum. BMC Microbiology, 25(1), 644.
  • BMC Microbiology (Journal). (www.biomedcentral.com/bmcmicrobiol/)
  • Yunnan University of Chinese Medicine (University). (Kunming, People's Republic of China)

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