You are here: Home
/ Publication Information
Title: Polyphenols in Ceratocystis minor infected Pinus taeda: fungal metabolites, phloem and xylem phenols
Author: Hemingway, Richard W.; McGraw, Gerald W.; Barras, Stanley J.;
Source: Agricultural and Food Chemistry, Vol. 25(4): 717-723
Publication Series: Miscellaneous Publication
Description: Since Ceratocystis minor is central to the death of pines infested by southern pine beetles, changes in polyphenols of infected loblolly pine were examined with regard to accumulation of fungal metabolites and changes in concentrations of fungitoxic and fungistatic phloem and xylem constitutents. C. minor grown in liquid culture produced 6,8-dihydroxy-3-hydroxymethyl-1H-2-benzopyran-1-one (I), 6,8-dihydoxy-3-methyl-1H-2-benzopyran-1-one (II), and 3,6,8-trihydroxy-3,4-dihydro-1-(2H)-naphtalenone (III). Isocoumarin II appeared in both phloem and xylem of loblolly pine bolts within 7 to 10 days after inoculation with C. minor. Isocoumarin I was evident in both phloem or xylem. The condensed tannins, catechin, and flavanonols were degraded by C. minor. The stilbenes pinosylvin, pinosylvin monomethyl ether, and a compound tentatively identified as resveratrol initially accumulated, but their concentrations also diminished in later periods of incubation.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
- You may send email to email@example.com to request a hard copy of this publication. (Please specify exactly
which publication you are requesting and your mailing address.)
XML: View XML
Hemingway, Richard W.; McGraw, Gerald W.; Barras, Stanley J. 1977. Polyphenols in Ceratocystis minor infected Pinus taeda: fungal metabolites, phloem and xylem phenols. Agricultural and Food Chemistry, Vol. 25(4): 717-723
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility