Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 65
Primeira ... 1234 ... Última
Imagem não selecionada

Imprime registro no formato completo
Evidencia de ADN ribosomal y del cloroplasto para la diversificaciOn de las PortulacAceas de AmErica occidental en la regiOn andina Gayana Botánica
Hershkovitz,Mark A.
Se determinaron las secuencias del espaciador interno (ITS) del ADN ribosomal y del espaciador intergénico de ycf3-trnS del ADN del cloroplasto para 183 muestras de taxas, chilenos y no chilenos, de Portulacaceae de América occidental, y sus grupos externos. Los datos permiten refinar previas inferencias sobre la circunscripción e interrelaciones de los géneros estudiados. En particular estos datos revelan que una circunscripción anteriormente publicada de Cistanthe Spach es polifilética y también revelan la existencia de un clado norteamericano compuesto por Claytonia L., Lewisia Pursh, Lewisiopsis R. Govaerts, and Montia L. De los datos de los géneros sudamericanos surgieron dos patrones: (1) en algunos casos la divergencia interespecífica es...
Tipo: Journal article Palavras-chave: Portulacaceae; Chile; ITS; Ycf3-trnS; Hibridización.
Ano: 2006 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432006000100002
Imagem não selecionada

Imprime registro no formato completo
First morphogenetic identification of Fusarium solani isolated from orange fruit in Egypt Phyton
Elsalam,KA; Youssef,K; Almoammar,H.
Losses due to postharvest decay may occur at any time during postharvest handling, from harvest to consumption affecting the produce quality and quantity. Accurate identification of the pathogen causing postharvest disease is essential to the selection of an appropriate disease control approach. Nine isolates of Fusarium recovered from orange fruit were identified as Fusarium solani. The fungus is involved with fruit decay. The obtained cultures were purified and grown on potato-dextrose agar (PDA), malt yeast agar (MYA), and Czapek's nutrient media (CNM) under light for identification. A pathogenicity test was carried out to fulfil Koch's postulates. The pathogen could only enter ripe orange fruit through wounds and cracks causing the rot disease. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fusarium fruit rot; Orange; Pathogenicity; ITS.
Ano: 2015 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572015000100018
Imagem não selecionada

Imprime registro no formato completo
Fungal pathogens of Proteaceae Naturalis
Crous, P.W.; Summerell, B.A.; Swart, L.; Denman, S.; Taylor, J.E.; Bezuidenhout, C.M.; Palm, M.E.; Marincowitz, S.; Groenewald, J.Z..
Species of Leucadendron, Leucospermum and Protea (Proteaceae) are in high demand for the international floriculture market due to their brightly coloured and textured flowers or bracts. Fungal pathogens, however, create a serious problem in cultivating flawless blooms. The aim of the present study was to characterise several of these pathogens using morphology, culture characteristics, and DNA sequence data of the rRNA-ITS and LSU genes. In some cases additional genes such as TEF 1-α and CHS were also sequenced. Based on the results of this study, several novel species and genera are described. Brunneosphaerella leaf blight is shown to be caused by three species, namely B. jonkershoekensis on Protea repens, B. nitidae sp. nov. on Protea nitida and B....
Tipo: Article / Letter to the editor Palavras-chave: Biodiversity; Cut-flower industry; Fungal pathogens; ITS; LSU; Phylogeny; Systematics.
Ano: 2012 URL: http://www.repository.naturalis.nl/record/532487
Imagem não selecionada

Imprime registro no formato completo
Fungos associados ao escurecimento da madeira em paricá. Repositório Alice
PALHETA, R. de A.; BOARI, A. de J.; QUADROS, A. F. F.; BATISTA, I. C. A.; BRANDÃO, A. T. O..
O paricá (Schizolobium parahyba var. amazonicum (Huber ex Ducke) Barneby) é uma espécie de potencial madeireiro e alternativa para reflorestamento de recuperação de áreas degradadas. Sua ocorrência é restrita à Bacia Amazônica, no Brasil, Bolívia e Venezuela. No Brasil, ocorre em mata primária e secundária de terra-firme e várzea alta. Muitos fungos têm sido relatados causando doenças nesta cultura. Em amostras de madeira provenientes de plantios do município de Vigia-PA observou-se a presença de manchas escurecidas associadas à fungos. Assim, o trabalho teve como objetivo identificar os fungos associados ao escurecimento da madeira de paricá por meio de PCR, seguido do sequenciamento do DNA. Para isso, amostras de tecido doente de paricá foram plaqueados...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Schizolobium parahyba var amazonicum; ITS; Identificação.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1053762
Imagem não selecionada

Imprime registro no formato completo
Genetic analyses of Rhizoctonia solani isolates from Phaseolus vulgaris grown in the Atlantic Rainforest Region of São Paulo, Brazil Trop. Plant Pathol.
MEINHARDT,LYNDEL W.; WULFF,NELSON A.; BELLATO,CLÁUDIA M.; TSAI,SIU M..
Rhizoctonia solani isolates obtained from common beans (Phaseolus vulgaris) grown in the mountainous Atlantic Rainforest (Mata Atlântica) region of São Paulo, Brazil, were analyzed to determine their genetic diversity using internal transcribed spacer (ITS), microsatellite and telomere sequence-based PCR primers. Restriction digestion of the ITS1/5.8S/ITS2 ribosomal regions yielded unique banding patterns specific for AG4 and its subgroups. The ITS restriction digestion (ITS/RFLP), telomere and microsatellite primers identified five to 11 genotypes within the isolates of R. solani. While all isolates were pathogenic on beans, there was no correlation found between genotypic differences and pathogenicity. The different PCR primers revealed a number of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mata Atlântica; Genetic biodiversity; Soil-borne fungi; ITS; Telomere.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582002000300004
Imagem não selecionada

Imprime registro no formato completo
Global diversity and molecular systematics of Wrightoporia s.l. (Russulales, Basidiomycota) Naturalis
Chen, J.J.; Cui, B.K.; Dai, Y.C..
Wrightoporia accommodates polypores producing finely asperulate and amyloid basidiospores, and causing white rot. Thirty-nine species have been described or transferred to this genus; however, only a few species have been referred to molecular phylogeny. In this study, about 140 worldwide specimens of Wrightoporia s.l. were studied morphologically, and ITS and/or nLSU regions from 37 samples, representing 19 species, were sequenced for phylogenetic analysis. Six clades of Wrightoporia s.l. were recognized. The Wrightoporia s.str. clade includes W. avellanea, W. lenta (the generic type) and W. subavellanea. Three clades segregating from Wrightoporia s.str. were proposed separately as three new genera, namely Larssoniporia gen. nov., Pseudowrightoporia gen....
Tipo: Article / Letter to the editor Palavras-chave: ITS; NLSU; Polypore; Wood-inhabiting fungi.
Ano: 2016 URL: http://www.repository.naturalis.nl/record/611851
Imagem não selecionada

Imprime registro no formato completo
Host specificity and speciation of Mycosphaerella and Teratosphaeria species associated with leaf spots of Proteaceae Naturalis
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
Imagem não selecionada

Imprime registro no formato completo
How important are conidial appendages? Naturalis
Crous, P.W.; Verkley, G.J.M.; Christensen, M.; Castañeda-Ruiz, R.F.; Groenewald, J.Z..
The genus Dinemasporium is used as a case study to evaluate the importance of conidial appendages for generic level classification of coelomycetous fungi. Based on morphology and sequence data of the large subunit nuclear ribosomal RNA gene (LSU, 28S) and the internal transcribed spacers and 5.8S rRNA gene of the nr DNA operon, the genus Dinemasporium is circumscribed, and an epitype designated for D. strigosum, the type of the genus. A further five species are introduced in Dinemasporium, namely D. pseudostrigosum (isolated from Triticum aestivum, Germany and Stigmaphyllon sagraeanum, Cuba), D. americana (soil, USA), D. polygonum (Polygonum sachalinense, Netherlands), D. pseudoindicum (soil, USA), and D. morbidum (human sputum, Netherlands and hare dung,...
Tipo: Article / Letter to the editor Palavras-chave: Chaetosphaeriaceae; Dinemasporium; ITS; LSU; Sordariomycetes; Systematics.
Ano: 2012 URL: http://www.repository.naturalis.nl/record/531966
Imagem não selecionada

Imprime registro no formato completo
Identificação de espécies de Trichoderma, isolados de culturas de alho e cebola, com potencial de controlar Sclerotium Cepivorum. Repositório Alice
VALADARES-INGLIS, M. C.; INGLIS, P. W.; MARTINS, I.; SIFUENTES, D. N.; SOUZA, D. A.; LOPES, R. B.; MELLO, S. C. M..
bitstream/item/171247/1/Resumo50CBFito-0355.pdf
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: AFLP; Análise molecular; ITS; MALDI-TOF; TEF.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1085655
Imagem não selecionada

Imprime registro no formato completo
Identificación molecular de aislamientos de Moniliophthora roreri en huertos de cacao de Norte de Santander, Colombia Acta Agron. (Palmira)
Suárez Contreras,Liliana Yanet.
El hongo fitopatógeno Moniliophthora roreri produce la moniliasis, una enfermedad que destruye la mazorca de cacao (Theobroma cacao L.) y, por tanto, reduce la producción del cultivo y los ingresos de los agricultores. En el departamento de Norte de Santander, Colombia, las pérdidas por esta enfermedad pueden alcanzar hasta 60% de la producción. El conocimiento sobre la biología del hongo es escaso y actualmente se están realizando estudios de identificación macroscópica, microscópica, y comportamiento in vitro frente a antagonistas como: Trichoderma asperellum, T. longibrachiatum, Paecilomyces sp. y Bacillus brevis. En ocho municipios y corregimientos del departamento (El Zulia, Cúcuta, Tibú, Sardinata, Bucarasica, Teorama, Agua clara y El Tarra)...
Tipo: Journal article Palavras-chave: Moniliophthora roreri; Theobroma cacao; Moniliasis; ITS.
Ano: 2016 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122016000100008
Imagem não selecionada

Imprime registro no formato completo
Integrative taxonomy of Meloidogyne oryzae (Nematoda: Meloidogyninae) parasitizing rice crops in Southern Brazil. Repositório Alice
MATTOS, V. S. da; CARES, J. E.; GOMES, C. B.; GOMES, A. C. M. M.; MONTEIRO, J. da M. dos S.; GOMEZ, G. M.; CASTAGNONE-SERENO, P.; CARNEIRO, R. M. D. G..
bitstream/item/179348/1/Mattos2018-Article-IntegrativeTaxonomyOfMeloidogy.pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: AFLP; Esterase phenotype; ITS; RAPD; Root-knot nematode; Tomato; Oryza Sativa; Taxonomy.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1092974
Imagem não selecionada

Imprime registro no formato completo
Integrative taxonomy of Meloidogyne oryzae (Nematoda: Meloidogyninae) parasitizing rice crops in Southern Brazil. Repositório Alice
MATTOS, V. S. da; CARES, J. E.; GOMES, C. B.; GOMES, A. C. M. M.; MONTEIRO, J. da M. dos S.; GOMEZ, G. M.; CASTAGNONE-SERENO, P.; CARNEIRO, R. M. D. G..
bitstream/item/189837/1/Cesar-Bauer-Mattos2018-Article-IntegrativeTaxonomyOfMeloidogy.pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: AFLP; Esterase phenotype; ITS; RAPD; Root-knot nematode; Tomato; Oryza Sativa; Taxonomy.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1103146
Imagem não selecionada

Imprime registro no formato completo
Isolamento bacteriano em variedades de cana-de-açúcar cultivadas na região nordeste. Repositório Alice
ANTÔNIO, C. DE S.; OLIVEIRA, K. T. DE.; FONSECA, W. C.; REIS, V. M..
2011
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Bacteria; Fixação biológica de nitrogênio; Gene nif; ITS.
Ano: 2011 URL: http://www.alice.cnptia.embrapa.br/handle/doc/906897
Imagem não selecionada

Imprime registro no formato completo
Marasmioid and gymnopoid fungi of the Republic of Korea. 2. Marasmius sect. Globulares Naturalis
Antonín, V.; Ryoo, R.; Shin, H.-D..
Seven species of Marasmius sect. Globulares with smooth pileipellis cells (sect. Globulares s. Singer) have been collected in the Republic of Korea (South Korea) to date, viz. M. aurantioferrugineus, M. brunneospermus, M. maximus, M. nivicola, M. purpureostriatus, M. wynneae and M. fusicystidiosus. Descriptions of their macro- and microscopic features with a discussion of similar taxa are given. Their taxonomic position was confirmed using DNA data. Marasmius fusicystidiosus is described as a new species. A key to aid in their identification is also provided.
Tipo: Article / Letter to the editor Palavras-chave: ITS; LSU; Nomenclature; Taxonomy.
Ano: 2010 URL: http://www.repository.naturalis.nl/record/531895
Imagem não selecionada

Imprime registro no formato completo
Molecular phylogenetic analyses reveal a close evolutionary relationship between Podosphaera (Erysiphales: Erysiphaceae) and its rosaceous hosts Naturalis
Takamatsu, S.; Niinomi, S.; Harada, M.; Havrylenko, M..
Podosphaera is a genus of the powdery mildew fungi belonging to the tribe Cystotheceae of the Erysiphaceae. Among the host plants of Podosphaera, 86 % of hosts of the section Podosphaera and 57 % hosts of the subsection Sphaerotheca belong to the Rosaceae. In order to reconstruct the phylogeny of Podosphaera and to determine evolutionary relationships between Podosphaera and its host plants, we used 152 ITS sequences and 69 28S rDNA sequences of Podosphaera for phylogenetic analyses. As a result, Podosphaera was divided into two large clades: clade 1, consisting of the section Podosphaera on Prunus (P. tridactyla s.l.) and subsection Magnicellulatae; and clade 2, composed of the remaining member of section Podosphaera and subsection Sphaerotheca. Because...
Tipo: Article / Letter to the editor Palavras-chave: 28S rDNA; Evolution; ITS; Molecular clock; Phylogeny; Powdery mildew fungi; Rosaceae.
Ano: 2010 URL: http://www.repository.naturalis.nl/record/532391
Imagem não selecionada

Imprime registro no formato completo
Morphological and genetic diversity of Beaufort Sea diatoms with high contributions from the Chaetoceros neogracilis species complex ArchiMer
Balzano, Sergio; Percopo, Isabella; Siano, Raffaele; Gourvil, Priscillia; Chanoine, Melanie; Marie, Dominique; Vaulot, Daniel; Sarno, Diana.
Seventy-five diatoms strains isolated from the Beaufort Sea (Canadian Arctic) in the summer of 2009 were characterized by light and electron microscopy (SEM and TEM) as well as 18S and 28S rRNA gene sequencing. These strains group into 20 genotypes and 17 morphotypes and are affiliated with the genera Arcocellulus, Attheya, Chaetoceros, Cylindrotheca, Eucampia, Nitzschia, Porosira, Pseudo-nitzschia, Shionodiscus, Thalassiosira, Synedropsis. Most of the species have a distribution confined to the northern/polar area. Chaetoceros neogracilis and Chaetoceros gelidus were the most represented taxa. Strains of C. neogracilis were morphologically similar and shared identical 18S rRNA gene sequences, but belonged to four distinct genetic clades based on 28S rRNA,...
Tipo: Text Palavras-chave: Biogeography; ITS; ITS2 secondary structure; LSU; Morphology; Phylogeny; Polar diatoms; SSU.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00356/46718/46584.pdf
Imagem não selecionada

Imprime registro no formato completo
Morphological plasticity in Cladosporium sphaerospermum Naturalis
Dugan, F.M.; Braun, U.; Groenewald, J.Z.; Crous, P.W..
A morphologically distinct isolate of Cladosporium sphaerospermum from a North American patent collection, referenced as Cladosporium lignicola in the patent, was examined. Generic affinity was confirmed by scanning electron microscopic examination of conidiogenous loci and conidial hila. Species identity as C. sphaerospermum was indicated by DNA sequence data derived from actin and translation elongation factor 1-α genes, and the internal transcribed spacer region. The isolate broadens the morphological limits of C. sphaerospermum by production of obclavate, occasionally transversely septate conidia with subrostrate conidiogenous apices (‘alternarioid’ conidia), and by production of conidia larger than those in prior standard descriptions. Type material...
Tipo: Article / Letter to the editor Palavras-chave: Actin; Cladosporium Davidiella; EF1-α; ITS; Morphology; Wood-inhabiting.
Ano: 2008 URL: http://www.repository.naturalis.nl/record/531979
Imagem não selecionada

Imprime registro no formato completo
Multiple Didymella teleomorphs are linked to the Phoma clematidina morphotype Naturalis
Woudenberg, J.H.C.; Aveskamp, M.M.; de Gruyter, J.; Spiers, A.G.; P.W.Crous.
The fungal pathogen Phoma clematidina is used as a biological agent to control the invasive plant species Clematis vitalba in New Zealand. Research conducted on P. clematidina as a potential biocontrol agent against,C. vitalba, led to the discovery of two perithecial-forming strains. To assess the diversity of P. clematidina and to clarify the teleomorph-anamorph relationship, phylogenetic analyses of 18 P. clematidina strains, reference strains representing the Phoma sections in the Didymellaceae and strains of related species associated with Clematis were conducted. Partial sequences of the ITS1, ITS2 and 5.8S rRNA gene, the ß-tubulin gene and 28S rRNA gene were used to clarify intra- and inter-species relationships. These analyses revealed that P....
Tipo: Article / Letter to the editor Palavras-chave: Ascochyta vitalbae; SS-tubulin; Clematis; Didymella clematidis; Didymella vitalbina; DNA phylogeny; ITS; LSU; Taxonomy.
Ano: 2009 URL: http://www.repository.naturalis.nl/record/532396
Imagem não selecionada

Imprime registro no formato completo
Niche sharing reflects a poorly understood biodiversity phenomenon Naturalis
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
Imagem não selecionada

Imprime registro no formato completo
Novel Curvularia species from clinical specimens Naturalis
Madrid, H.; da Cunha, K.C.; Gené, J.; Dijksterhuis, J.; Cano, J.; Sutton, D.A.; Guarro, J.; Crous, P.W..
The fungal genus Curvularia includes numerous plant pathogens and some emerging opportunistic pathogens of humans. In a previous study we used morphology and sequences of the nuclear ribosomal internal transcribed spacer region (ITS) and the glyceraldehyde-3-phosphate dehydrogenase (gpd) gene to identify species within a set of 99 clinical Curvularia isolates from the USA. Seventy-two isolates could be identified while the remaining 27 isolates belonged in three unclassified clades that were tentatively labelled Curvularia sp. I, II and III. In the present study, we further assess the taxonomic placement of these isolates using sequences of ITS, gpd, the large subunit rDNA, and the second largest subunit of RNA polymerase II. DNA sequence comparisons with a...
Tipo: Article / Letter to the editor Palavras-chave: Bipolaris; Curvularia; Gpd; ITS; LSU; Phylogeny; RPB2; Systematics.
Ano: 2014 URL: http://www.repository.naturalis.nl/record/532180
Registros recuperados: 65
Primeira ... 1234 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional