ABSTRACT
Basidiomata of Phallales have a diversified morphology with adhesive gleba that exudes an odor, usually unpleasant that attracts mainly insects, which disperse the basidiospores. The genus Blumenavia belongs to the family Clathraceae and, based on morphological features, only two species are currently recognized: B. rhacodes and B. angolensis. However, the morphological characters adopted in species delimitations within this genus are inconsistent, and molecular data are scarce. The present study aimed to review and identify informative characters that contribute to the delimitation of Blumenavia species. Exsiccates from America and Africa were analyzed morphologically, and molecularly, using ITS, LSU, ATP6, RPB2 and TEF-1α markers for Maximum Parsimony, Bayesian and Maximum likelihood analyses, and also for coalescent based species delimitations (BP&P), as well as for bPTP, PhyloMap, Topo-phylogenetic and Geophylogenetic reconstructions. According to our studies, seven species can be considered in the genus: B. rhacodes and B. angolensis are maintained, B. usambarensis and B. toribiotalpaensis are reassessed, and three new species are proposed, B. baturitensis Melanda, M.P. Martín & Baseia, sp. nov., B. crucis-hellenicae G. Coelho, Sulzbacher, Grebenc & Cortez, sp. nov., and B. heroica Melanda, Baseia & M.P. Martín, sp. nov. Blumenavia rhacodes is typified by selecting a lectotype and an epitype. Macromorphological characters considered informative to segregate and delimit the species through integrative taxonomy include length of the basidiomata, color, width and presence of grooves on each arm as well as the glebifer position and shape. These must be clearly observed while the basidiomata are still fresh. Since most materials are usually analyzed after dehydration and deposit in collections, field techniques and protocols to describe fugacious characters from fresh specimen are demanded, as well as the use of molecular analysis, in order to better assess recognition and delimitation of species in Blumenavia.
Subject(s)
Basidiomycota/classification , Basidiomycota/cytology , Basidiomycota/genetics , Bayes Theorem , Brazil , DNA, Fungal/genetics , Mexico , Phylogeny , Species Specificity , Spores, Fungal/cytology , TanzaniaABSTRACT
South America harbors much of the world's biodiversity, representing a potential reservoir of species with diverse possibilities for use. From this perspective, mushroom species are included because they naturally produce a wide variety of substances, especially ones with antimicrobial activity. In this article we present a review of the literature on the antimicrobial activity of mushrooms collected in South America, emphasizing the bacteria and fungi these mushrooms inhibit, the main methodologies researchers use for antimicrobial tests, and some directions for future research. This review demonstrates that the agar diffusion test was the most prevalent method in studies of South American mushrooms. Most studies dealt with specimens collected in Chile (16 species), Brazil (10 species), and Uruguay (2 species), and 27 of those species presented antimicrobial activity. Furthermore, most research developed with Basidiomycetes in South America aimed only to screen antimicrobial agents, whereas few studies explored the antimicrobial potential of purified secondary metabolites. Thus it is very important to conduct research in order to screen for and isolate antimicrobial substances, which researchers can then use to develop new antimicrobial drugs.
Subject(s)
Agaricales/chemistry , Anti-Infective Agents/chemistry , Anti-Infective Agents/pharmacology , Bacteria/drug effects , Basidiomycota/chemistry , South AmericaABSTRACT
A case of mushroom poisoning of a dog caused by a phalloid fungus is reported for the first time. The phalloid caused gastrointestinal syndrome in a 1-year-old dog, and was identified as Lysurus cruciatus, a common phalloid fungus in southern Brazil.
Subject(s)
Basidiomycota/classification , Dog Diseases/physiopathology , Mushroom Poisoning/veterinary , Animals , Basidiomycota/metabolism , Brazil , Dog Diseases/drug therapy , Dogs , Male , Mushroom Poisoning/drug therapy , Mushroom Poisoning/physiopathologyABSTRACT
Stropharia acanthocystis is described as a new species from southern Brazil. It is characterized by the lack of an annulus and the presence of acanthocytes in the hymenium.
