Topic
Bridgeoporus
About: Bridgeoporus is a research topic. Over the lifetime, 4 publications have been published within this topic receiving 171 citations.
Papers
TL;DR: The hymenochaetoid clade is dominated by wood-decaying species previously classified in the artificial families Corticiaceae, Polyporaceae and Stereaceae, and a group of small white to brightly pigmented agarics earlier classified in Omphalina form a subclade together with some similarly colored stipitate stereoid and corticioid species.
Abstract: The hymenochaetoid clade is dominated by wood-decaying species previously classified in the artificial families Corticiaceae, Polyporaceae and Stereaceae. The majority of these species cause a white rot. The polypore Bridgeoporus and several corticioid species with inconspicuous basidiomata live in association with brown-rotted wood, but their nutritional strategy is not known. Mycorrhizal habit is reported for Coltricia perennis but needs confirmation. A surprising element in the hymenochaetoid clade is a group of small white to brightly pigmented agarics earlier classified in Omphalina. They form a subclade together with some similarly colored stipitate stereoid and corticioid species. Several are associated with living mosses or one-celled green algae. Hyphoderma pratermissum and some related corticioid species have specialized organs for trapping and killing nematodes as a source of nitrogen. There are no unequivocal morphological synapomorphies known for the hymenochaetoid clade. However almost all species examined ultrastructurally have dolipore septa with continuous parenthesomes while perforate parenthesomes is the normal condition for other homobasidiomycete clades. The agaricoid Hymenochaetales have not been examined. Within Hymenochaetales the Hymenochaetaceae forms a distinct clade but unfortunately all morphological characters supporting Hymenochaetaceae also are found in species outside the clade. Other subclades recovered by the molecular phylogenetic analyses are less uniform, and the overall resolution within the nuclear LSU tree presented here is still unsatisfactory.
196 citations
Journal Article•
16 citations
TL;DR: The results indicate that the survival strategy of this fungus is to produce and maintain a mycelial presence in its hosts while infrequently producing a long-lasting basidiocarp.
Abstract: The polypore Bridgeoporus nobilissimus produces large perennial basidiocarps on large diameter Abies stumps, snags and trees in coniferous forests of the Pacific Northwest. Despite the size and persistence of the basidiocarps, they are rarely observed, making the conservation of this species a concern. We determined that a genetic marker for this fungus could be detected in DNA extracted from wood cores taken from trees hosting basidiocarps. We then tested 105 trees and stumps that did not host B. nobilissimus basidiocarps in plots surrounding B. nobilissimus conks, and 291 trees and stumps in randomly located plots in four stands that contained at least one B. nobilissimus basidiocarp. We found that trees of all sizes throughout all of the stands hosted B. nobilissimus . The proportion of Abies trees (live and dead) colonized by B. nobilissimus in these stands ranged from .06 ± .04 in a recently thinned stand to .39 ± .08 in an old growth stand. The spatial density of B. nobilissimus colonized trees ranged from 25 ± 13 to 61 ± 12 trees/ ha. The spatial density was highest in the old growth stand, but intermediate in the recently thinned stand. In a separate study we detected B. nobilissimus DNA in three conifer species that were not known to host this species: Pseudotsuga menziesii , Tsuga heterophylla , and Thuja plicata . Our results indicate that the survival strategy of this fungus is to produce and maintain a mycelial presence in its hosts while infrequently producing a long-lasting basidiocarp. The detection of B. nobilissimus , and other fungi adopting this reproductive strategy, is difficult using visual observation, but achievable using methods based on DNA detection of mycelia in hosts.
3 citations
TL;DR: The use of molecular DNA technology with environmental samples changed the perception of Bridgeoporus nobilissimus from a rare species present at a few sites, to a widely distributed species that produces few fruit bodies.
1 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2021 | 1 |
| 2015 | 1 |
| 2006 | 1 |
| 1996 | 1 |