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 | Acesso ao texto completo restrito à biblioteca da Embrapa Arroz e Feijão. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
21/12/2017 |
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Data da última atualização: |
02/05/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
BLANCO, A. J. V.; COSTA, M. O.; SILVA, R. do N.; ALBUQUERQUE, F. S. de; MELO, A. T. de O.; LOPES, F. A. C.; STEINDORFF, A. S.; BARBOSA, E. T.; ULHOA, C.; LOBO JUNIOR, M. |
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Afiliação: |
ANGEL JOSÉ VIERA BLANCO, Instituto Federal de Educação Ciência e Tecnologia de Goiás; MARÍLIA OLIVEIRA COSTA, Instituto Federal de Educacao Ciência e Tecnologia de Goiás; ROBERTO DO NASCIMENTO SILVA, Universidade de São Paulo; FÁBIO SUZART DE ALBUQUERQUE, Arizona State University; ARTHUR TAVARES DE OLIVEIRA MELO, University of New Hampshire; FABYANO ALVARES CARDOSO LOPES, Universidade Federal do Rio de Janeiro; ANDREI STECCA STEINDORFF, University of Brasília; ELDER TADEU BARBOSA, CNPAF; CIRANO ULHOA, Universidade Federal de Goiás; MURILLO LOBO JUNIOR, CNPAF. |
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Título: |
Diversity and pathogenicity of rhizoctonia species from the brazilian cerrado. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Plant Disease, v. 102, n. 4, p. 773-781, Apr. 2018. |
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ISSN: |
1943-7692 |
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DOI: |
10.1094/PDIS-05-17-0721-RE |
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Idioma: |
Inglês |
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Conteúdo: |
Eighty-one Rhizoctonia-like isolates were identified based on morphology and nuclei-staining methods from natural and agricultural soils of the Cerrado (Brazilian Savanna). The nucleotide similarity analysis of ITS1-5.8S-ITS2 regions identified 14 different taxa, with 39.5% of isolates assigned to Waitea circinata (zeae, oryzae and circinata varieties), while 37.0% belonged to Thanatephorus cucumeris Anastomosis Groups (AG) AG1-IB, AG1-ID, AG1-IE, AG4-HGI and AG4-HGIII. Ceratobasidium spp. AG-A, AG-F, AG-Fa, AG-P and AG-R comprised 23.5%. Rhizoctonia zeae (19.8%), R. solani, AG1-IE (18.6%), and binucleate Rhizoctonia AG-A (8.6%) were the most frequent anamorphic states found. Root rot severity caused by the different taxa varied from low to high on common beans, and tended to be low to average in maize. Twenty-two isolates were pathogenic to both hosts, suggesting difficulties in managing Rhizoctonia root rots with crop rotation. These results suggest that cropping history affects the geographical arrangement of AGs, with a prevalence of AG1 in the tropical zone from central to north Brazil while the AG4 group was most prevalent from the central the subtropical south. Waitea circinata var. zeae was predominant in soils under maize production. To our knowledge, this is the first report on the occurrence of W. circinata var. circinata in Brazil. |
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Thesagro: |
Biodiversidade; Cerrado; Doença de planta; Patogenicidade; Solo. |
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Thesaurus NAL: |
Cerrado soils; Rhizoctonia; Species diversity. |
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Categoria do assunto: |
H Saúde e Patologia |
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Marc: |
LEADER 02339naa a2200349 a 4500
001 2083307
005 2018-05-02
008 2018 bl uuuu u00u1 u #d
022 $a1943-7692
024 7 $a10.1094/PDIS-05-17-0721-RE$2DOI
100 1 $aBLANCO, A. J. V.
245 $aDiversity and pathogenicity of rhizoctonia species from the brazilian cerrado.$h[electronic resource]
260 $c2018
520 $aEighty-one Rhizoctonia-like isolates were identified based on morphology and nuclei-staining methods from natural and agricultural soils of the Cerrado (Brazilian Savanna). The nucleotide similarity analysis of ITS1-5.8S-ITS2 regions identified 14 different taxa, with 39.5% of isolates assigned to Waitea circinata (zeae, oryzae and circinata varieties), while 37.0% belonged to Thanatephorus cucumeris Anastomosis Groups (AG) AG1-IB, AG1-ID, AG1-IE, AG4-HGI and AG4-HGIII. Ceratobasidium spp. AG-A, AG-F, AG-Fa, AG-P and AG-R comprised 23.5%. Rhizoctonia zeae (19.8%), R. solani, AG1-IE (18.6%), and binucleate Rhizoctonia AG-A (8.6%) were the most frequent anamorphic states found. Root rot severity caused by the different taxa varied from low to high on common beans, and tended to be low to average in maize. Twenty-two isolates were pathogenic to both hosts, suggesting difficulties in managing Rhizoctonia root rots with crop rotation. These results suggest that cropping history affects the geographical arrangement of AGs, with a prevalence of AG1 in the tropical zone from central to north Brazil while the AG4 group was most prevalent from the central the subtropical south. Waitea circinata var. zeae was predominant in soils under maize production. To our knowledge, this is the first report on the occurrence of W. circinata var. circinata in Brazil.
650 $aCerrado soils
650 $aRhizoctonia
650 $aSpecies diversity
650 $aBiodiversidade
650 $aCerrado
650 $aDoença de planta
650 $aPatogenicidade
650 $aSolo
700 1 $aCOSTA, M. O.
700 1 $aSILVA, R. do N.
700 1 $aALBUQUERQUE, F. S. de
700 1 $aMELO, A. T. de O.
700 1 $aLOPES, F. A. C.
700 1 $aSTEINDORFF, A. S.
700 1 $aBARBOSA, E. T.
700 1 $aULHOA, C.
700 1 $aLOBO JUNIOR, M.
773 $tPlant Disease$gv. 102, n. 4, p. 773-781, Apr. 2018.
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