A fungus with gelatinous poroid fruiting bodies was found in Puerto Rico and determined by macro- and micromorphology to be most similar to members of the lamellate agaric genus Resupinatus. This species is described as a new species, Resupinatus porosus. Phylogenetic analyses of ribosomal DNA…
Keywords: Agarics, Henningsomyces, hymenophore evolution, phylogeny, Porotheleum, rDNA, tropical fungi, molecular genetics, nucleotide sequence, Tricholomataceae, identification, Puerto Rico, Agaricales, classification, Stigmatolemma, Resupinatus, taxonomy, genetic analysis
Source: Mycologia. Vol. 97, no. 5: Pages. 1140-1151.
Molecular phylogenetic analyses for the gomphoid-phalloid fungi were conducted based on the five gene dataset with extensive taxon sampling. The monophyly of the gomphoid-phalloid clade was strongly supported, and four well supported major subclades were recognized. Three of the four subclades were…
Keywords: atp6, EF-lα, homobasidiomycetes, rDNA, RPm, systematics
Source: Mycologia. 98(6): 949-959.
Phylogenetic relationships among Geastrales, Gomphales, Hysterangiales, and Phallales were estimated via combined sequences: nuclear large subunit ribosomal DNA (nuc-25S-rDNA), mitochondrial small subunit ribosomal DNA (mit-12S-rDNA), and mitochondrial atp6 DNA (mit-atp6-DNA).…
Keywords: atp6, Gomphales, Homobasidiomycetes, rDNA, systematics
Source: British Mycological Society. 114: 224-234
Nuclear ribosomal DNA regions (i.e. large subunit, internal transcribed spacer, 5.8S and intergenic spacer) were sequenced using a direct-polymerase chain reaction method from Armillaria ostoyae genets collected from the western USA. Many of the A. ostoyae genets contained heterogeneity among rDNA…
Keywords: Armillaria ostoyae, rDNA
Source: Forest Pathology. 37: 192-216.
The internal transcribed spacer (ITS) regions of rDNA and the intervening 5.8S rRNA gene for the powdery mildew fungi Erysiphe (sect. Microsphaera) pulchra and Phyllactinia guttata were amplified using standard polymerase chain reaction (PCR) protocols and the universal primer pairs, ITS1 and ITS4…
Keywords: internal transcribed spacer (ITS), rDNA, Erysiphe pulchra, Phyllactinia guttata, Cornus florida
Source: Forest Pathology. 34: 321-328.
Armillaria plays diverse ecological roles in forests worldwide, which has inspired interest in understanding phylogenetic relationships within and among species of this genus. Previous rDNA sequence-based phylogenetic analyses of Armillaria have shown general relationships among widely divergent…
Keywords: Armillaria, rDNA
Source: In: Browning, John; Palacios, Patsy, comps. Proceedings of the 60th Annual Western International Forest Disease Work Conference; October 8-12 October 2012; Tahoe City, CA. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Forest Health Technology and Enterprise Team. p. 141-144.
Kalapuya is described as a new, monotypic truffle genus in the Morchellaceae known only from the Pacific northwestern United States. Its relationship to other hypogeous genera within Morchellaceae is explored by phylogenetic analysis of the ribosomal LSU and EFlα protein coding region. The…
Keywords: Ascomycota, Douglas-fir, hypogeous fungus, Fischerula, Leucangium, LSU, rDNA, EFlα, Morchellaceae, Pezizales, taxonomy, truffle
Source: Mycologia. 102(5): 1058-1065
The 185-285 rDNA and 55 rDNA loci in Populus trichocarpa were localized using fluorescent in situ hybridization (FISH). Two 185-285 rDNA sites and one 55 rDNA site were identified and located at the ends of 3 different chromosomes. FISH signals from the Arabidopsis-type telomere repeat sequence…
Keywords: BAC, FISH, Populus trichocarpa, rDNA, Telomere
Source: Cytogenet Genome Res 125:74-80
The number of sequences from both formally described taxa and uncultured environmental DNA deposited in the International Nucleotide Sequence Databases has increased substantially over the last two decades. Although the majority of these sequences represent authentic gene copies, there is evidence…
Keywords: novel lineage, ribosomal RNA secondary structure, pseudogene, rDNA, fungi, metagenomic DNA
Source: Molecular Phylogenetics and Evolution
Slash pine is native to the southeastern USA, but is commercially valuable world-wide as a timber-,fiber- and resin-producing species. Breeding objectives emphasize selection for fusiform rust disease resistance. Identification of markers linked to genetic factors conditioning specificity should…
Keywords: Genetic mapping, Pinus elliottii, Telomere, In situ hybridization, Karyotype, rDNA
Source: In:Unifying Plant Genomes SEB Symposium No. 50. The Society for Experimental Biology.