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Registro Completo |
Biblioteca(s): |
Embrapa Semiárido. |
Data corrente: |
18/05/2015 |
Data da última atualização: |
29/03/2016 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
SILVA, E. M.; MAIA, L. C.; MENEZES, K. M. S.; BRAGA, M. B.; MELO, N. F. de; MELO, A. M. Y. |
Afiliação: |
E. M. SILVA, UFPE; L. C. MAIA, UFPE; K. M. S. MENEZES, UNIVASF; MARCOS BRANDAO BRAGA, CNPH; NATONIEL FRANKLIN DE MELO, CPATSA; A. M. YANO MELO, UNIVASF. |
Título: |
Water availability and formation of propagules of arbuscular mycorrhizal fungi associated with sorghum. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
Applied Soil Ecology, v. 94, p. 15-20, 2015. |
DOI: |
10.1016/j.apsoil.2015.05.004 |
Idioma: |
Inglês |
Conteúdo: |
Arbuscular mycorrhizal fungi (AMF) promote greater tolerance to the negative effects of water stress in their host plants, yet may also be influenced by the availability of water in the production of their infective propagules. The objective of this study was to assess the effect of water availability in the soil on the sporulation of Claroideoglomus etunicatum,Gigaspora albida and Scutellospora heterogama, and the influence of this condition on the infective potential and number of nuclei in glomerospores of these species. The reduction of water availability from 75 to 25% did not decrease significantly the sporulation of C. etunicatum, but resulted in decrease of sporulation of G. albida (600 to 7 glomerospores per 30 g1 soil) and S. heterogama (274 to 2 glomerospores per 30 g1 soil). The water availability at 75 and 71% promoted maximum sporulation of G. albida and S. heterogama, respectively. While G. albida and S. heterogama had greater sporulation than C. etunicatum, the infective potential of these species was lower, which may be related to the life-strategy and type of infective propagules of each species. The number of nuclei per glomerospore varied only among the species (p < 0.05), with C. etunicatum and G. albida presenting the higher number of nuclei when compared to S. heterogama, but no differences were found among the treatments of water availability (p > 0.05). These results suggest that AMF have distinct sporulation strategies and the amount of glomerospores is not directly related to the infectivity of the inoculum. Possibly, the differences in the life-strategies among the species were greater than the effects of water availability. MenosArbuscular mycorrhizal fungi (AMF) promote greater tolerance to the negative effects of water stress in their host plants, yet may also be influenced by the availability of water in the production of their infective propagules. The objective of this study was to assess the effect of water availability in the soil on the sporulation of Claroideoglomus etunicatum,Gigaspora albida and Scutellospora heterogama, and the influence of this condition on the infective potential and number of nuclei in glomerospores of these species. The reduction of water availability from 75 to 25% did not decrease significantly the sporulation of C. etunicatum, but resulted in decrease of sporulation of G. albida (600 to 7 glomerospores per 30 g1 soil) and S. heterogama (274 to 2 glomerospores per 30 g1 soil). The water availability at 75 and 71% promoted maximum sporulation of G. albida and S. heterogama, respectively. While G. albida and S. heterogama had greater sporulation than C. etunicatum, the infective potential of these species was lower, which may be related to the life-strategy and type of infective propagules of each species. The number of nuclei per glomerospore varied only among the species (p < 0.05), with C. etunicatum and G. albida presenting the higher number of nuclei when compared to S. heterogama, but no differences were found among the treatments of water availability (p > 0.05). These results suggest that AMF have distinct sporulation strategies and the amount of glomerospore... Mostrar Tudo |
Palavras-Chave: |
Deficit hídrico; FMA; Fungo micorrízicos arbusculares; Inoculum potential; Nuclei; Núcleos; Potencial de inóculo; Water deficiency. |
Thesagro: |
Esporulação; Fungo; Micorríza; Sorghum Bicolor; Sorgo. |
Thesaurus Nal: |
Sporulation. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
Marc: |
LEADER 02697naa a2200361 a 4500 001 2015543 005 2016-03-29 008 2015 bl uuuu u00u1 u #d 024 7 $a10.1016/j.apsoil.2015.05.004$2DOI 100 1 $aSILVA, E. M. 245 $aWater availability and formation of propagules of arbuscular mycorrhizal fungi associated with sorghum.$h[electronic resource] 260 $c2015 520 $aArbuscular mycorrhizal fungi (AMF) promote greater tolerance to the negative effects of water stress in their host plants, yet may also be influenced by the availability of water in the production of their infective propagules. The objective of this study was to assess the effect of water availability in the soil on the sporulation of Claroideoglomus etunicatum,Gigaspora albida and Scutellospora heterogama, and the influence of this condition on the infective potential and number of nuclei in glomerospores of these species. The reduction of water availability from 75 to 25% did not decrease significantly the sporulation of C. etunicatum, but resulted in decrease of sporulation of G. albida (600 to 7 glomerospores per 30 g1 soil) and S. heterogama (274 to 2 glomerospores per 30 g1 soil). The water availability at 75 and 71% promoted maximum sporulation of G. albida and S. heterogama, respectively. While G. albida and S. heterogama had greater sporulation than C. etunicatum, the infective potential of these species was lower, which may be related to the life-strategy and type of infective propagules of each species. The number of nuclei per glomerospore varied only among the species (p < 0.05), with C. etunicatum and G. albida presenting the higher number of nuclei when compared to S. heterogama, but no differences were found among the treatments of water availability (p > 0.05). These results suggest that AMF have distinct sporulation strategies and the amount of glomerospores is not directly related to the infectivity of the inoculum. Possibly, the differences in the life-strategies among the species were greater than the effects of water availability. 650 $aSporulation 650 $aEsporulação 650 $aFungo 650 $aMicorríza 650 $aSorghum Bicolor 650 $aSorgo 653 $aDeficit hídrico 653 $aFMA 653 $aFungo micorrízicos arbusculares 653 $aInoculum potential 653 $aNuclei 653 $aNúcleos 653 $aPotencial de inóculo 653 $aWater deficiency 700 1 $aMAIA, L. C. 700 1 $aMENEZES, K. M. S. 700 1 $aBRAGA, M. B. 700 1 $aMELO, N. F. de 700 1 $aMELO, A. M. Y. 773 $tApplied Soil Ecology$gv. 94, p. 15-20, 2015.
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Embrapa Semiárido (CPATSA) |
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Biblioteca(s): |
Embrapa Amazônia Ocidental. |
Data corrente: |
12/11/2018 |
Data da última atualização: |
12/11/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
B - 3 |
Autoria: |
CYSNE, A. Q.; LIMA, W. A. A. de; SOUZA, M. G. de. |
Afiliação: |
ALEX QUEIROZ CYSNE, CPAA; WANDERLEI ANTONIO ALVES DE LIMA, CPAA; MARIA GERALDA DE SOUZA, CPAA. |
Título: |
Fungos associados a sementes híbridas de dendezeiro. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
Agroecossistemas, v. 7, n. 1, p. 27-34, 2015. |
DOI: |
http://dx.doi.org/10.18542/ragros.v7i1.1935 |
Idioma: |
Português |
Conteúdo: |
O conhecimento dos principais fungos que possam comprometer a qualidade das sementes torna-se indispensável no estabelecimento de áreas de cultivo de híbridos de dendezeiro, de forma a evitar a redução na produção e o aumento de custos. Assim, objetivou-se identificar os principais fungos associados a sementes híbridas intraespecíficas e interespecíficas de dendezeiro. |
Palavras-Chave: |
Micofauna; Palma de óleo; Patologia de sementes. |
Thesagro: |
Elaeis Guineensis. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/185843/1/1935-20574-1-PB.pdf
|
Marc: |
LEADER 00985naa a2200205 a 4500 001 2099202 005 2018-11-12 008 2015 bl uuuu u00u1 u #d 024 7 $ahttp://dx.doi.org/10.18542/ragros.v7i1.1935$2DOI 100 1 $aCYSNE, A. Q. 245 $aFungos associados a sementes híbridas de dendezeiro.$h[electronic resource] 260 $c2015 520 $aO conhecimento dos principais fungos que possam comprometer a qualidade das sementes torna-se indispensável no estabelecimento de áreas de cultivo de híbridos de dendezeiro, de forma a evitar a redução na produção e o aumento de custos. Assim, objetivou-se identificar os principais fungos associados a sementes híbridas intraespecíficas e interespecíficas de dendezeiro. 650 $aElaeis Guineensis 653 $aMicofauna 653 $aPalma de óleo 653 $aPatologia de sementes 700 1 $aLIMA, W. A. A. de 700 1 $aSOUZA, M. G. de 773 $tAgroecossistemas$gv. 7, n. 1, p. 27-34, 2015.
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