Revisão do gênero Blumenavia Möller (Phallales): integração de dados morfológicos e moleculares
Phallales is the order represented by fungi called stinkhorns that use attractive odors and an adhesive gleba to propagate its spores through dispersing agents, mainly arthropods. The genus Blumenavia is a gasteroid fungi. This genus is included in the family Clathraceae. Currently, based on only...
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| Formato: | Dissertação |
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| Endereço do item: | https://repositorio.ufrn.br/jspui/handle/123456789/25365 |
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| Resumo: | Phallales is the order represented by fungi called stinkhorns that use attractive odors and an
adhesive gleba to propagate its spores through dispersing agents, mainly arthropods. The genus
Blumenavia is a gasteroid fungi. This genus is included in the family Clathraceae. Currently,
based on only in morphological data, two species are considered for the genus: Blumenavia
rhacodes and B. angolensis, whose type localities are Brazil and Africa, respectively. Two other
species, described previously, were considered synonymous by some authors: Blumenavia
toribiotalpaensis originally described for Mexico and synonimized with B. rhacodes and B.
usambarensis synonimized with B. angolensis. It was verified the inconsistency of the
morphological characters used for the delimitation of the species and the scarcity of molecular
data, especially of the ITS region. With the objective of reviewing and identify informative
characters of the genus and the best species delimitation, the present work was conducted by
comparative morphological and molecular studies using ITS, LSU, ATP6, RPB2 and TEF1α
sequences from 32 collections from several herbaria, as well a specimen collected from the state
of Ceará-BR. For the morphological description of these specimens were analyzed macro and
microstructures (rhizomorph, volva, columns, glebiferous and spores) in 5% KOH, Melzer
Reagent, 1% Congo Red and Cotton Blue. Seven species for this genus was delimited based on
the concatenated results (morphological and molecular, with 42 new sequences generated).
Blumenavia rhacodes and B. angolensis manteined, B. usambarensis and B. toribiotalpaensis
were reconsidered here, and three new species are proposed for the genus. The characters: arms
color and thickness, as well as the presence of grooves on their faces; shape and arrangement
of glebifers; size and shape of basidiospores; hyphae of apical exoperium and criytals in
peridium layers were defined as relevant for segregation and delimitation of species within the
genus. |
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