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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. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão; Embrapa Recursos Genéticos e Biotecnologia. |
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Data corrente: |
16/09/2019 |
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Data da última atualização: |
12/02/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MATTOS, V. da S.; LEITE, R. R.; CARES, J. E.; GOMES, A. C. M. M.; MOITA, A. W.; LOBO, V. L. S.; CARNEIRO, R. M. D. G. |
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Afiliação: |
VANESSA DA SILVA MATTOS; RAYCENNE ROSA LEITE, UNB; JUVENIL ENRIQUE CARES, UNB; ANA CRISTINA MENESES M GOMES, Cenargen; ANTONIO WILLIAM MOITA; VALACIA LEMES DA SILVA LOBO, CNPAF; REGINA MARIA DECHECHI G CARNEIRO, Cenargen. |
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Título: |
Oryza glumaepatula, a new source of resistance to Meloidogyne graminicola and histological characterization of its defense mechanisms. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Phytopathology, v. 109, n. 11, p. 1941-1948, Nov. 2019. |
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ISSN: |
0031-949X |
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DOI: |
10.1094/PHYTO-02-19-0044-R |
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Idioma: |
Inglês |
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Conteúdo: |
Meloidogyne graminicola causes significant damage to rice fields worldwide. Sources of resistance to M. graminicola reported in Oryza sativa are limited. Resistance to this species has been found in other Oryza species such as O. glaberrima and O. longistaminata. This study aimed to evaluate the reaction of four wild species of Oryza from the Embrapa Rice and Bean Germplasm Bank (Goiás, Brazil) to a pool of M. graminicola populations and determine the resistance mechanism in O. glumaepatula. Two genotypes of O. glaberrima, one of O. alta, three of O. glumaepatula, one of O. grandiglumis, one of O. longistaminata, and one of O. sativa (control) were included in the study. The results showed that O. glumaepatula was highly resistant (reproduction factor [RF] < 1). O. glaberrima, O. alta, and O. grandiglumis were considered moderately resistant. O. longistaminata was susceptible, although values of RF remained lower than the control O. sativa 'BR-IRGA 410', considered highly susceptible. Histological observations on the interaction of O. glumaepatula and M. graminicola showed reduced penetration of second-stage juveniles (J2s) when this resistant wild accession was compared with O. sativa. An intense hypersensitivity response-like reaction occurred at 2 days after inoculation in the root cortex of the resistant accession. Few J2s established in the central cylinder, and rare collapsed giant cells were observed surrounded by degenerate females. Fluorescence microscopy in O. glumaepatula revealed giant cells and the female body presumably exhibiting accumulation of phenolic compounds. Our study suggests that wild rice accessions, especially from the AA genotype (e.g., O. glumaepatula), are of great interest for use in future breeding programs with Oryza spp. MenosMeloidogyne graminicola causes significant damage to rice fields worldwide. Sources of resistance to M. graminicola reported in Oryza sativa are limited. Resistance to this species has been found in other Oryza species such as O. glaberrima and O. longistaminata. This study aimed to evaluate the reaction of four wild species of Oryza from the Embrapa Rice and Bean Germplasm Bank (Goiás, Brazil) to a pool of M. graminicola populations and determine the resistance mechanism in O. glumaepatula. Two genotypes of O. glaberrima, one of O. alta, three of O. glumaepatula, one of O. grandiglumis, one of O. longistaminata, and one of O. sativa (control) were included in the study. The results showed that O. glumaepatula was highly resistant (reproduction factor [RF] < 1). O. glaberrima, O. alta, and O. grandiglumis were considered moderately resistant. O. longistaminata was susceptible, although values of RF remained lower than the control O. sativa 'BR-IRGA 410', considered highly susceptible. Histological observations on the interaction of O. glumaepatula and M. graminicola showed reduced penetration of second-stage juveniles (J2s) when this resistant wild accession was compared with O. sativa. An intense hypersensitivity response-like reaction occurred at 2 days after inoculation in the root cortex of the resistant accession. Few J2s established in the central cylinder, and rare collapsed giant cells were observed surrounded by degenerate females. Fluorescence microscopy in O. glum... Mostrar Tudo |
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Palavras-Chave: |
Genetics and Resistance; Population Biology. |
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Thesagro: |
Arroz; Meloidogyne spp; Nematóide; Oryza Sativa. |
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Thesaurus Nal: |
Hypersensitivity; Nematology; Rice; Root-knot nematodes. |
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Categoria do assunto: |
--
H Saúde e Patologia |
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Marc: |
LEADER 02792naa a2200337 a 4500
001 2112793
005 2020-02-12
008 2019 bl uuuu u00u1 u #d
022 $a0031-949X
024 7 $a10.1094/PHYTO-02-19-0044-R$2DOI
100 1 $aMATTOS, V. da S.
245 $aOryza glumaepatula, a new source of resistance to Meloidogyne graminicola and histological characterization of its defense mechanisms.$h[electronic resource]
260 $c2019
520 $aMeloidogyne graminicola causes significant damage to rice fields worldwide. Sources of resistance to M. graminicola reported in Oryza sativa are limited. Resistance to this species has been found in other Oryza species such as O. glaberrima and O. longistaminata. This study aimed to evaluate the reaction of four wild species of Oryza from the Embrapa Rice and Bean Germplasm Bank (Goiás, Brazil) to a pool of M. graminicola populations and determine the resistance mechanism in O. glumaepatula. Two genotypes of O. glaberrima, one of O. alta, three of O. glumaepatula, one of O. grandiglumis, one of O. longistaminata, and one of O. sativa (control) were included in the study. The results showed that O. glumaepatula was highly resistant (reproduction factor [RF] < 1). O. glaberrima, O. alta, and O. grandiglumis were considered moderately resistant. O. longistaminata was susceptible, although values of RF remained lower than the control O. sativa 'BR-IRGA 410', considered highly susceptible. Histological observations on the interaction of O. glumaepatula and M. graminicola showed reduced penetration of second-stage juveniles (J2s) when this resistant wild accession was compared with O. sativa. An intense hypersensitivity response-like reaction occurred at 2 days after inoculation in the root cortex of the resistant accession. Few J2s established in the central cylinder, and rare collapsed giant cells were observed surrounded by degenerate females. Fluorescence microscopy in O. glumaepatula revealed giant cells and the female body presumably exhibiting accumulation of phenolic compounds. Our study suggests that wild rice accessions, especially from the AA genotype (e.g., O. glumaepatula), are of great interest for use in future breeding programs with Oryza spp.
650 $aHypersensitivity
650 $aNematology
650 $aRice
650 $aRoot-knot nematodes
650 $aArroz
650 $aMeloidogyne spp
650 $aNematóide
650 $aOryza Sativa
653 $aGenetics and Resistance
653 $aPopulation Biology
700 1 $aLEITE, R. R.
700 1 $aCARES, J. E.
700 1 $aGOMES, A. C. M. M.
700 1 $aMOITA, A. W.
700 1 $aLOBO, V. L. S.
700 1 $aCARNEIRO, R. M. D. G.
773 $tPhytopathology$gv. 109, n. 11, p. 1941-1948, Nov. 2019.
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Embrapa Arroz e Feijão (CNPAF) |
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| 1. |  | CARDOSO, L. S.; BERGAMASCHI, H.; BOSCO, L. C.; DE PAULA, V. A.; BRAUNER, P. C.; CASAMIALI, B.; MARODIN, G. A. B.; NACHTIGALL, G. R. Necessidades e disponibilidades climáticas para macieira na região de Vacaria, Brasil. In: REUNIÓN ARGENTINA, 13.; LATINOAMERICANA DE AGROMETEOROLOGÍA, 6., 2010, Bahía Blanca, Argentina. Agrometeorología sin fronteiras en el año internacional del acercamiento de las culturas: actas. Bahía Blanca: Asociación Argentina de Agrometeorología, 2010. Não paginado. RALDA 2010.| Tipo: Artigo em Anais de Congresso |
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