Affiliation:
1. Department of Plant Pathology, University of Arizona, Tucson, Arizona 85721, and Department of Plant Pathology, University of Minnesota, St. Paul, Minnesota 551082
Abstract
Isolates of six species of
Ganoderma
in the
G. lucidum
complex were evaluated for their ability to decay wood of
Quercus hypoleucoides
A. Camus and
Abies concolor
(Gord. and Glend.) Lindl. ex. Hildebr. by using in vitro agar block decay tests. Morphological, ultrastructural, and chemical studies of decayed wood were used to determine the extent of delignification or simultaneous decay caused by each species of
Ganoderma.
All species decayed both white fir and oak wood; however, less percent weight loss (%WL) occurred in white fir than oak. In white fir, isolates of two undescribed
Ganoderma
species (RLG16161, RLG16162, JEA615, and JEA625) caused significantly higher%WL (21 to 26%) than that in
G. colossum, G. oregonense, G. meredithiae,
and
G. zonatum
(10 to 16%). Only
Ganoderma
sp. isolates JEA615 and JEA625 caused delignification, with JEA615 causing a lignin-to-glucose gram loss ratio of 1.6:1. Morphological and ultrastructural studies confirmed delignification by this fungus and showed that some delignification had occurred by all of the species, although areas of delignification were limited to small regions adjacent to simultaneously decayed cells. In oak,
G. colossum
caused significantly less%WL (22 to 35%) than the other species (38 to 52%). All of the species, except
G. meredithiae,
caused delignification with lignin-to-glucose gram loss ratios ranging from 1.4 to 4.9:1. Extensive delignification by isolates of
G. colossum
and
G. oregonense
was observed; moderate delignification was caused by the other species.
Ganoderma meredithiae
caused a simultaneous decay, with only small localized regions of cells delignified, while delignification by
G. zonatum
was irregular, with specific zones within the cell wall delignified. The thermophilic and chlamydosporic
G. colossum
has the capacity to cause extensive delignification and appears ideally suited for use in lignin degradation studies and biotechnological applications of lignin-degrading fungi.
Publisher
American Society for Microbiology
Subject
Ecology,Applied Microbiology and Biotechnology,Food Science,Biotechnology
Reference34 articles.
1. A rapid technique using epoxy resin Quetol 651 to prepare woody plant tissues for ultrastructural study;Abad A. R.;Can. J. Bot.,1988
2. In vitro decay studies of selective delignification and simultaneous decay by the white rot fungi Ganoderma Iucidum and G. tsugae;Adaskaveg J. E.;Can. J. Bot.,1986
3. Ganoderma meredithiae, a new species on pines in the southeastern United States;Adaskaveg J. E.;Mycotaxon,1988
4. Basidiospores, pilocystidia, and other basidiocarp characters in several species of G. Iucidum complex;Adaskaveg J. E.;Mycologia,1988
5. Cultural studies of plex with comparisons to G. Iucidum and G. tsugae;Adaskaveg J. E.;Mycol. Res.,1989
Cited by
51 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献