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 | Acesso ao texto completo restrito à biblioteca da Embrapa Milho e Sorgo. Para informações adicionais entre em contato com cnpms.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
20/01/2006 |
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Data da última atualização: |
29/05/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SOUZA-PACCOLA, E. A.; FAVARO, L. C.; CASELA, C. R.; PACCOLA-MEIRELLES, L. D. |
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Afiliação: |
Embrapa Milho e Sorgo. |
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Título: |
Genetic recombination in colletotrichum sublineolum. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
Journal of Phytopathology, Berlin, v. 151, n. 6, p. 329-334, 2003. |
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Idioma: |
Inglês |
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Conteúdo: |
Genetic recombination without typical parasexuality (parameiosis) was shown in the fungus Colletotrichum sublineolum, causal agent of anthracnose on sorghum. The cross among auxotrophic mutants and mutants resistant to benomyl and cycloheximide confirmed the occurrence of heterokaryosis in this species. Aneuploid and haploid recombinants were obtained from heterokaryons. Some segregants released sectors continually after several replication cycles, and were considered aneuploids in the process of haploidization. Heterokaryons derived from crosses among mutants that presented low pathogenicity produced more virulent recombinants. Parasexuality with parameiosis may represent a natural mechanism for genetic variability amplification explaining the rapid appearance of new C. sublineolum physiological races. |
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Palavras-Chave: |
Heterokaryosis; Parameiosis; Vegetative compatibility. |
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Thesaurus Nal: |
mutants; parasexual cycle. |
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Categoria do assunto: |
-- |
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Marc: |
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100 1 $aSOUZA-PACCOLA, E. A.
245 $aGenetic recombination in colletotrichum sublineolum.$h[electronic resource]
260 $c2003
520 $aGenetic recombination without typical parasexuality (parameiosis) was shown in the fungus Colletotrichum sublineolum, causal agent of anthracnose on sorghum. The cross among auxotrophic mutants and mutants resistant to benomyl and cycloheximide confirmed the occurrence of heterokaryosis in this species. Aneuploid and haploid recombinants were obtained from heterokaryons. Some segregants released sectors continually after several replication cycles, and were considered aneuploids in the process of haploidization. Heterokaryons derived from crosses among mutants that presented low pathogenicity produced more virulent recombinants. Parasexuality with parameiosis may represent a natural mechanism for genetic variability amplification explaining the rapid appearance of new C. sublineolum physiological races.
650 $amutants
650 $aparasexual cycle
653 $aHeterokaryosis
653 $aParameiosis
653 $aVegetative compatibility
700 1 $aFAVARO, L. C.
700 1 $aCASELA, C. R.
700 1 $aPACCOLA-MEIRELLES, L. D.
773 $tJournal of Phytopathology, Berlin$gv. 151, n. 6, p. 329-334, 2003.
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| 1. |  | TOMAZALLI, I. B.; FREITAS, J. B. DE; FABBI, L. M.; FILIPINI, T. A.; SILVA, C. M. da; BEDIN, J. M.; DUARTE, D. A. M.; SANTOS, A. dos; BACARRIN, A.; HIGA, L. R. G.; YANO, D. M. Y.; KILLNER, M.; FREZZA, A. L. C.; ABECIA, E. C. de G.; TRONCO, V. M.; TOMAZELLI JÚNIOR, O.; BARIONI JUNIOR, W. Comparison of the BAX system PCR method to Brazil's official method for the detection of Salmonella in food, water, and environmental samples. Journal of Food Protection, v. 71, n. 12, p. 2442-2447, dec. 2008.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Internacional - A |
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