Morphological and Molecular Characteristics of the Oak Tree Canker Pathogen, Annulohypoxylon truncatum.
- Author:
Jaeyul CHA
1
;
Bitna HEO
;
Soo Jeong AHN
;
Guenhye GANG
;
Chung Gyoo PARK
;
Youn Sig KWAK
Author Information
1. Department of Applied Biology, Gyeongsang National University, Jinju 600-701, Korea. kwak@gnu.ac.kr
- Publication Type:Brief Communication
- Keywords:
Canker;
Oak tree;
Xylariaceae
- MeSH:
Fungi;
Quercus;
Trees
- From:Mycobiology
2012;40(1):79-81
- CountryRepublic of Korea
- Language:English
-
Abstract:
Cankers are localized dead areas in the bark of stems, branches or twigs of many types of trees and shrubs, and are usually caused by fungi. We observed severe canker symptoms in oak trees located in Gyeongnam province in 2011. A total 31 trees were discovered with cankers of varied size, with an average of 48.5 x 15.2 cm. Black, half-rounded globular mound shaped stromata were associated with the cankers, and the asci of the fungi associated with the cankers were cylindrical shaped with their spore-bearing parts being up to 84 microm in length. The average fungal ascospores size was 7.59 x 4.23 microm. The internal transcribed spacer sequence for the canker causing fungus showed 99% similarity to the sequence of Annulohypoxylon truncatum. In this study, the isolated fungus was precisely described and then compared with fungi of similar taxa.
