JOURNAL ARTICLE

Constitutive chemical defense mechanism of inner bark of Sorbus commixta against Trametes versicolor.

  • Published In: Tree Physiology, 2025, v. 45, n. 2. P. 1 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Koyama, Masato; Shigetomi, Kengo; Tamai, Yutaka; Arakawa, Keita; Sano, Yuzou 3 of 3

Abstract

This article investigates the constitutive chemical defense mechanisms of the inner bark of Sorbus commixta Hedl. against the white-rot fungus Trametes versicolor (Linnaeus) Lloyd. It demonstrates that hydrogen cyanide (HCN), produced via enzymatic hydrolysis of cyanogenic glycosides such as amygdalin by β-glucosidase upon tissue injury, acts as a potent antifungal agent inhibiting fungal growth. The study quantified amygdalin content, confirmed HCN production in both freeze-dried inner bark samples and artificially exposed living trunks, and showed that HCN release is transient but sufficient to create an unfavorable environment for fungal invasion. These findings highlight HCN as a key volatile compound in the constitutive chemical defense of S. commixta inner bark following injury.

Additional Information

  • Source:Tree Physiology. 2025/02, Vol. 45, Issue 2, p1
  • Document Type:Article
  • Subject Area:Chemistry
  • Publication Date:2025
  • ISSN:0829-318X
  • DOI:10.1093/treephys/tpaf006
  • Accession Number:184040070
  • Copyright Statement:Copyright of Tree Physiology is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Looking to go deeper into this topic? Look for more articles on EBSCOhost.