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Two new species of Mycena Section Longisetae from Mexico
Abstract and Figures
Two new species of Mycena belonging to Section Longisetae are described from cloud forests of Veracruz State, Mexico, viz., Mycena glaesisetosa and M. punkissima. Sequences of nuc rDNA ITS1-5.8S-ITS2 were generated for barcoding purposes and for comparisons with similar species. Comprehensive descriptions, line drawings of salient micromorphological features, and photographs of each species are provided.
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The diversity of lignicolous agaric fungi is poorly known in Mexico. This group of fungi is responsible for the primary decomposition of wood, providing mineral elements that allow the nutrient cycles. The objective of this work was to reveal and confirm some lignicolous species present in Mexico with both morphological and molecular data. Thirteen species of eight genera, belonging to six families of lignicolous agaricoid fungi of the Agaricales were recorded, discussed, and illustrated, of which 11 are new records for Mexico. Considering our results, we confirm that Mexico is a Nearctic and Neotropical convergence zone of fungal taxa from both regions.
A very simple, fast, universally applicable and reproducible method to extract high quality megabase genomic DNA from different
organisms is decribed. We applied the same method to extract high quality complex genomic DNA from different tissues (wheat,
barley, potato, beans, pear and almond leaves as well as fungi, insects and shrimps' fresh tissue) without any modification.
The method does not require expensive and environmentally hazardous reagents and equipment. It can be performed even in low
technology laboratories. The amount of tissue required by this method is ∼50–100 mg. The quantity and the quality of the DNA
extracted by this method is high enough to perform hundreds of PCR-based reactions and also to be used in other DNA manipulation
techniques such as restriction digestion, Southern blot and cloning.
Three new species of the agaric genus Mycena (M. lomamaya, M. jatila and M. pelava) are described from Kerala State, India and are assigned to sect. Longisetae. Comprehensive descriptions, photographs, and comparisons with phenetically similar species are provided. A key to the species of Mycena sect. Longisetae known from Kerala is given.
Mycena saloma sp. nov. is described and illustrated from Kerala State, India. Mycena lomavritha nom. nov. is proposed for Mycena indica Manim. & Leelav., nom. illegit. The Brazilian species M. rhaphidocephala, previously accepted in sect. Sacchariferae, is accepted in sect. Longisetae.
N.L. (2002). An accounting of the worldwide members of Mycena sect. Longisetae. Fungal Diversity 11: 69-85. Eleven species are accepted in a redefined Mycena sect. Longisetae. Two species, M. palmicola and M. khonkhem, are described as new, and M. clavulifera is redescribed based on material collected recently in Thailand. Mycena trichocephala, previously accepted in sect. Sacchariferae is herein accepted in sect. Longisetae. Two stirps are provisionally accepted to accommodate the 11 species: stirps Brunneisetosa (4 species) and stirps Longiseta (7 species). All members of sect. Longisetae develop primordia covered with numerous, erect, stiff pileosetae that aid to deter animal predation on the immature hymenophore. All included species develop pileipelli with acanthocyst cells and stipitipelli with non-spinulose cortical hyphae. The center of diversity for Mycena sect. Longisetae is southeast Asia.
Seven new species of Mycena from the State of Parana, Brazil, are described in section Sacchariferae, one species each in sections Nigrescentes and Granuliferae, and complementary notes are given of one species in section Polyadelphia. A key is provided for the species of section Sacchariferae thus far found in Parana.
Mycena longiseta is redescribed based on representative material from Java. The taxon currently known as M. longiseta in Europe and North America is renamed M. aciculata. Mycena brunneisetosa is redescribed from Indonesian material and compared with M. indica. Comments are provided on Mycena breviseta, a species not recollected since first described in 1909. Mycena sect. Longisetae is redefined to accommodate additional species.