Topic
Neolentinus
About: Neolentinus is a research topic. Over the lifetime, 17 publications have been published within this topic receiving 369 citations.
Papers
TL;DR: Phylogenetic relationships of the basidiomycete Lentinus were investigated using 20 morphological and 133 nucleic acid sequence characters from three regions in the 5' half of the nuclear-encoded large subunit rRNA, suggesting that lamellae are products of convergent evolution.
Abstract: Phylogenetic relationships of the basidiomycete Lentinus were investigated using 20 morphological and 133 nucleic acid sequence characters from three regions in the 5' half of the nuclear-encoded large subunit rRNA. Molecular data were obtained from 34 individuals that rep- resent 11 species in Lentinus, nine in the Polyporaceae, eight in the Tricholomataceae, and one in the Corticiaceae. Thanetephorus cucumeris (Tulasnellales) was used as an outgroup for rooting pur- poses. Most of the sequence variation was in regions that correspond to eukaryote-specific divergent domains DI and D2. Molecular data alone yielded a well-resolved cladogram but morphological data alone were insufficient to resolve phylogenetic relationships. The most resolved cladograms were obtained with a combined analysis of molecular and morphological characters. Bootstrap and decay index measures of branch robustness had a significant positive correlation, but some branches with high bootstrap values were contradicted by near-minimal trees. Monophyly of Lentinus sensu Pegler was not supported. Rather, three monophyletic groups of Lentinus species were resolved. These largely correspond to Neolentinus, Panus, and Lentinus s. str. The latter appears to be derived from the Polyporaceae, suggesting that lamellae are products of convergent evolution.
117 citations
TL;DR: The purpose of the present work was to increase a resolution in the lentinoid-polyporoid phylogenetic zone by means of selection of both the main representatives of Lentinus-related genera and poorly known/intermediate taxa such as L Quentinus suavissimus, Neofavolus spp.
Abstract: Polyporoid and lentinoid fungi contain the important producers of substances having immunomodulatory, antitumoral, antiviral, and antihyperlipidemic effects. The discovery of several phylogenetic lines within the lentinoid-polyporoid continuum will help with target metabolomic analysis of species still not studied in pharmacological respects. The purpose of the present work was to increase a resolution in the lentinoid-polyporoid phylogenetic zone by means of selection of both the main representatives of Lentinus-related genera and poorly known/intermediate taxa such as Lentinus suavissimus, Neofavolus spp., and the resupinate part of Polyporus (genera Perenniporia and Pachykytospora) in the context of the basic structure of the Polyporales tree. The molecular phylogeny of highlighting all the polyporoid and lentinoid nodes was reconstructed using nLSU ITS rDNA and TEF datasets. The data obtained from ITS, TEF, and LSU coincide in support of core Polyporaceae of 10 clades corresponded to the generic level and 7 of these (Cerioporus, Cladomeris, Favolus, Lentinus, Neofavolus, Picipes, and Polyporus s.str.) contain generic units characterized by polyporoid or lentinoid morphotypes. The other 2 clades containing lentinoid taxa are outside the core Polyporaceae, namely Panus (Meruliaceae, Polyporales) and Neolentinus (Gloeophyllaceae, Gloeophyllales). A new genus, Picipes, is described and 25 new combinations are proposed.
46 citations
TL;DR: The internal transcribed spacer region exhibited more variability than the 18S rDNA, giving distinctive profiles for two strains of Lentinus tigrinus and for one strain of Neolentinus lepideus.
Abstract: Restriction polymorphisms in two regions of the ribosomal DNA (rDNA) repeat unit were examined in 18 strains of Lentinus, Neolentinus, Pleurotus, and the shiitake mushroom Lentinula edodes. The pol...
23 citations
TL;DR: The Neolentiporus gen. nov. is proposed to accommodate P. maculatissimus, a species with a striking macromorphological similarity with the north temperate P. squamosus, and the new genus Polyporus portenrosus, regarded as the poroid counterpart of the agaricoid Neolentinus.
Abstract: Morphological and cultural studies of Polyporus maculatissimus and P. portentosus are presented. Neolentiporus gen. nov. is proposed to accommodate P. maculatissimus, a species with a striking macromorphological similarity with the north temperate P. squamosus. The new genus is characterized by medium to large stipitate fruitbodies with a poroid hymenophore, circular to flabellate pilei with a scaly surface and an excentric or lateral stipe that sometimes is reduced to a short, robust umbo. The hyphal system is dimitic with clamped, irregularly thick-walled generative hyphae that do not react with cresyl-blue, and terminal, unbranched, thick-walled skeletal hyphae that are strongly metachromatic in cresyl-blue. Spores are cylindric, hyaline, thin-walled, inamyloid and binucleate. The sexuality is bipolar, the nuclear behavior is astatocoeno-cytic and the associated wood-rot is brown. The new genus is regarded as the poroid counterpart of the agaricoid Neolentinus. Polyporus portenrosus is included in Laetiporus on the basis of its yellowish fruitbodies, its soft, punky context, its hyphal system composed of simple septate generative hyphae and binding hyphae, its holocoenocytic nuclear behavior and its associated brown wood-rot. A new code symbol, i.e. ‘9s’ is proposed to codify the presence, in cultures, of simple-septate generative hyphae with irregularly thickened walls.
22 citations
1 Dec 1997
TL;DR: The taxonomy of the genus Lentinula, based on the morphological variations that can occur under different environmental conditions, is discussed in this article, where the same thick-walled inflated hyphae are observed in Pleurotus, Lentinus and Neolentinus.
Abstract: This paper is a contribution to the taxonomy of the genus Lentinula, based on the morphological variations that can occur under different environmental conditions. Studies of the types of L. boryana, L. cubensis, L. lateritia and L. novaezelandiae, as well as of several wild and cultured collections of L. boryana, and cultured basidiomata of L. edodes, L. lateritia and L. novaezelandiae were made. Morphological observations of the macro- and microscopic features of basidiomata showed that the robustness, the vinaceous brown color in the pileus, the serrulate edges of the gills and the well developed veil of L. edodes and its related species L. lateritia and L. novaezelandiae, and the smaller size and lighter color of the basidioma, even gills and poor developed veil of L. boryana, are the main features to separate them. However, L. boryana is difficult to distinguish from those Asiatic and Australasian species in cultured basidiomata for the morphological variations in all of them. Lentinula cubensis is merely a synonym of L. boryana because of its basidioma characteristics and neotropical distribution. Interbreeding between dikaryotic strains of L. edodes, L. lateritia and L. novaezelandiae showed that all of them are the same species, named L. edodes and confined to temperate, subtropical and tropical lands of E. S. and SE Asia and Australasia. But L. boryana is incompatible with L. edodes and the others, so it is an independent species, confined to the neotropics, maily to the subtropical regions. The same thick-walled inflated hyphae in the genus Lentinula were observed in Pleurotus, Lentinus and Neolentinus. The disposition of the genus Lentinula in the Poriales, instead in the Agaricales is discussed
12 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2019 | 2 |
| 2016 | 1 |
| 2011 | 1 |
| 2007 | 2 |
| 2003 | 1 |
| 2002 | 1 |