6 documents found, page 1 of 1
Microfungos fitopatogênicos em pteridófitas
Guatimosim, EduardoUm estudo sobre fungos supostamente fitopatogênicos relacionados a plantas de Pteridophyta no Brasil foi realizado. Plantas desta divisão, comumente conhecidas como samambaias, têm ligações evolutivas diretas com as primeiras plantas vasculares que apareceram no final do período Devoniano. Conhecer a micobiota associada a este grupo de plantas é crucial para uma compreensão completa dos fungos e sua história ev...
Micobiota fitopatogência das plantas daninhas Bidens pilosa e Bidens subalterna...
Guatimosim, EduardoO chamado “complexo Bidens” é um conjunto de espécies de plantas da família Asteraceae que inclui Bidens pilosa (picão preto) e Bidens subalternans (picão amarelo). Estas espécies de plantas daninhas são de grande importância devido aos problemas que causam para a agricultura brasileira e mundial. O manejo destas duas espécies tem sido dificultado com o surgimento e disseminação de biótipos resistentes a herbic...
Bipolaris marantae sp. nov., a novel Helminthosporoid specis causing foliage bl...
Lourenço, Carla Cristina Gomes; Alves, Janaina Lana; Guatimosim, Eduardo; Colman, Adans; Barreto, Robert WeingartA severe leaf spot, turning to foliage blight, was observed on leaves of Maranta leuconeura growing in a garden in Brazil (state of Rio de Janeiro) in 2015. A dematiaceous hyphomycete bearing a morphology typical of a helminthosporoid fungi was regularly found in association with diseased tissues. The fungus was isolated and pathogenicity was demonstrated through the completion of Koch's postulates. A morpholog...
First record of Pyricularia grisea causing leaf blight of Costus spiralis in Br...
Santana, Eduardo A.; Guatimosim, Eduardo; Fuga, Cicero A. G.; Glienke, Chirlei; Barreto, Robert WeingartA leaf blight was observed on Costus spiralis in an experimental area in the campus of the Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil. Morphology and ITS sequences placed the fungus associated with the disease in Pyricularia grisea. Pathogenicity was demonstrated. This is the first record of P. grisea on Costus spiralis worldwide.
The Colletotrichum orbiculare species complex: Important pathogens of field cro...
Barreto, Robert W.; Guatimosim, Eduardo; Crous, Pedro W.; Liu, Fang; Cannon, Paul F.; Damm, UlrikeColletotrichum orbiculare causes anthracnose of Cucurbitaceae and is phylogenetically closely related to pathogens of several other herbaceous hosts belonging to the Asteraceae, Fabaceae and Malvaceae. Most of them are known for their hemibiotrophic infection strategy and as destructive pathogens either of field crops or weeds. In order to study the phylogenetic relationships of these fungi, a multilocus analys...
A new Inocyclus species (Parmulariaceae) on the neotropical fern Pleopeltis ast...
Guatimosim, Eduardo; Schwartsburd, Pedro B.; Barreto, Robert W.During a survey for fungal pathogens associated with ferns in Brazil, a tar spot-causing fungus was found on fronds of Pleopeltis astrolepis. This was recognised as belonging to Inocyclus (Parmulariaceae). After comparison with other species in the genus, it was concluded that the fungus on P. astrolepis is a new species, described here as Inocyclus angularis sp. nov.