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Registros recuperados: 11 | |
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Crous, P.W.; Summerell, B.A.; Mostert, L.; Groenewald, J.Z.. |
Cheirosporium gen. nov. is characterised by the production of sporodochial conidiomata, semi-macronematous to macronematous onidiophores that possess several distinct sterile branches, and cheiroid, smooth-walled conidia with rhexolytic secession. The 28S rDNA and ITS rDNA operon of this taxon were amplified and sequenced. A BLAST search revealed low homology between Cheirosporium triseriale and existing sequences in public databases, supporting the hypothesis that the species is new to science. Phylogenetic analysis showed that C. triseriale groups with Dictyosporium and allied species, and nests within the Pleosporales (Dothideomycetes, Ascomycota).heirosporium is morphologically distinct from the cheirosporous genera Cheiromyces, Cheiromycina,... |
Tipo: Article / Letter to the editor |
Palavras-chave: ITS; Leucadendron; Leucospermum; Mycosphaerella; Protea; Teratosphaeria. |
Ano: 2008 |
URL: http://www.repository.naturalis.nl/record/532268 |
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ZANUNCIO JUNIOR, J. S.; COSTA, H.; DORZENONI, R. R.; GUARÇONI, R. C.; FORNAZIER, M. L.; SOSSAI, S. R.; BOTACIM, L. A.; SOUZA, E. M. R.; FERRAO, M. A. G.; MARTINS, D. dos S.; FAVARATO, L. F.; FORNAZIER, M. J.. |
Coffee production has a great socioeconomic importance for Brazil. It generates direct and indirect jobs, and foreign exchange, with Brazilian Arabica coffee production estimated between 42 - 46 million bags (60 kg) in 2020. It is the main agribusiness activity in the State of Espírito Santo, Brazil with expected production between 13 - 15 million bags, and around 30% of this production is Arabica coffee. Technologies are recommended to coffee growers to increase yield, and production of specialty coffees on sustainable properties. Among the principles of integrated management is the monitoring of pests and diseases to determine the level of pest control. The estimate of the number of leaves to be sampled in the monitoring becomes an important tool to... |
Tipo: Artigo de periódico |
Palavras-chave: Peste; Disease surveillance; Pest control; Coffea arabica var. arabica; Mycosphaerella; Cercospora. |
Ano: 2022 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1142726 |
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Arzanlou, M.; Groenewald, J.Z.; Fullerton, R.A.; Abeln, E.C.A.; Carlier, J.; Zapater, M.-F.; Buddenhagen, I.W.; Viljoen, A.; Crous, P.W.. |
Three species of Mycosphaerella, namely M. eumusae, M. fijiensis, and M. musicola are involved in the Sigatoka disease complex of bananas. Besides these three primary pathogens, several additional species of Mycosphaerella or their anamorphs have been described from Musa. However, very little is known about these taxa, and for the majority of these species no culture or DNA is available for study. In the present study, we collected a global set of Mycosphaerella strains from banana, and compared them by means of morphology and a multi-gene nucleotide sequence data set. The phylogeny inferred from the ITS region and the combined data set containing partial gene sequences of the actin gene, the small subunit mitochondrial ribosomal DNA and the histone H3... |
Tipo: Article / Letter to the editor |
Palavras-chave: Mycosphaerella; Phylogeny; Sigatoka disease complex; Taxonomy. |
Ano: 2008 |
URL: http://www.repository.naturalis.nl/record/531861 |
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Crous, P.W.; Wingfield, M.J.; Groenewald, J.Z.. |
Eucalyptus spp. are susceptible to a large number of foliar pathogens, some of which can cause serious defoliation and die-back. In this study, a single leaf spot on a Eucalyptus leaf collected in Madagascar revealed an unusual association of microfungi with disease symptoms. Initial observations indicated that the leaf spot was associated with Mycosphaerella marksii, a common pathogen of eucalypts. However, more intensive scrutiny showed the presence of several other microfungi co-occurring in this, and other leaf spots on the leaf. A total of 41 single conidial propagules were subsequently obtained from a single lesion for morphological study and DNA sequence comparisons. Based on these data, 11 members of the Capnodiales, including one species of... |
Tipo: Article / Letter to the editor |
Palavras-chave: Eucalyptus; ITS; Mycosphaerella; Systematics; Teratosphaeria. |
Ano: 2009 |
URL: http://www.repository.naturalis.nl/record/531761 |
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Crous, P.W.; Summerell, B.A.; Carnegie, A.J.; Wingfield, M.J.; Groenewald, J.Z.. |
Recent phylogenetic studies based on multi-gene data have provided compelling evidence that the Mycosphaerellaceae and Teratosphaeriaceae represent numerous genera, many of which can be distinguished based on their anamorph morphology. The present study represents the second contribution in a series describing several novel species in different capnodealean genera defined in a previous study. Novelties on Eucalyptus from Australia include: Penidiella pseudotasmaniensis, P. tenuiramis, Phaeothecoidea intermedia, P. minutispora, Pseudocercospora tereticornis, Readeriella angustia, R. eucalyptigena, R. menaiensis, R. pseudocallista, R. tasmanica, Teratosphaeria alboconidia, T. complicata, T. majorizuluensis, T. miniata, T. profusa, Zasmidium aerohyalinosporum... |
Tipo: Article / Letter to the editor |
Palavras-chave: Mycosphaerella; Penidiella; Phaeophleospora; Phaeothecoidea; Pseudocercospora; Readeriella; Teratosphaeria; Zasmidium. |
Ano: 2009 |
URL: http://www.repository.naturalis.nl/record/532086 |
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Quaedvlieg, W.; Kema, G.H.J.; Groenewald, J.Z.; Verkley, G.J.M.; Seifbarghi, S.; Razavi, M.; Mirzadi Gohari, A.; Mehrabi, R.; Crous, P.W.. |
The Mycosphaerella complex is both poly- and paraphyletic, containing several different families and genera. The genus Mycosphaerella is restricted to species with Ramularia anamorphs, while Septoria is restricted to taxa that cluster with the type species of Septoria, S. cytisi, being closely related to Cercospora in the Mycosphaerellaceae. Species that occur on graminicolous hosts represent an as yet undescribed genus, for which the name Zymoseptoria is proposed. Based on the 28S nrDNA phylogeny derived in this study, Zymoseptoria is shown to cluster apart from Septoria. Morphologically species of Zymoseptoria can also be distinguished by their yeast-like growth in culture, and the formation of different conidial types that are absent in Septoria s.str.... |
Tipo: Article / Letter to the editor |
Palavras-chave: Hordeum vulgare; ITS; LSU; Multilocus sequence typing; Mycosphaerella; Septoria; Systematics; Triticum aestivum. |
Ano: 2011 |
URL: http://www.repository.naturalis.nl/record/532144 |
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Registros recuperados: 11 | |
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