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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Ocidental. |
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Data corrente: |
06/10/1999 |
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Data da última atualização: |
28/12/2018 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
AMELUNG, W.; MARTIUS, C.; GARCIA, M. V.; KUEPER, U.; ULBRICH, D.; ZECH, W. |
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Afiliação: |
MARCOS VINICIUS BASTOS GARCIA, CPAA. |
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Título: |
Organic matter in termite mounds of an Amazonian rain forest. |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
In: SHIFT - WORKSHOP, 3., 1998, Manaus. Proceedings... Bonn: BMBF, 1998. |
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Páginas: |
p. 493-496. |
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Idioma: |
Inglês |
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Conteúdo: |
This study investigates how termites alter the organic matter in rain forests near Manaus, Brazil. Samples were collected from the outer and inner parts of typical termite nests of Nasutitermes, Termes, Embiratermes, Cornitermes, Anoplotermes, and Constrictotermes genera, as well as from the surrounding topsoil (0cm-10cm) and potential wooden food. The termite nests were signficant sinks for organic matter and its associated nutrients. The organic C contents ranged between 100g kg-1 and 500g kg-1 in the nests, compared to 17g kg-1 to 42g kg-1 in the surrounding topsoils. As lignin contents of the mounds were higher than in wood, lignin may be accumulated in preference to other organic compounds. This findings also sugests that the interior part of the nests is a region of higher organic matter turnover and lignin degradation. |
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Palavras-Chave: |
Amazonas; Brasil; Isopteras; Manaus; Termitade. |
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Thesagro: |
Cupim; Floresta Tropical Úmida; Matéria Orgânica. |
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Thesaurus Nal: |
organic matter; tropical rain forests. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/181339/1/ID-4191-493-496.pdf
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Marc: |
LEADER 01626nam a2200301 a 4500
001 1668411
005 2018-12-28
008 1998 bl uuuu u00u1 u #d
100 1 $aAMELUNG, W.
245 $aOrganic matter in termite mounds of an Amazonian rain forest.
260 $aIn: SHIFT - WORKSHOP, 3., 1998, Manaus. Proceedings... Bonn: BMBF$c1998
300 $ap. 493-496.
520 $aThis study investigates how termites alter the organic matter in rain forests near Manaus, Brazil. Samples were collected from the outer and inner parts of typical termite nests of Nasutitermes, Termes, Embiratermes, Cornitermes, Anoplotermes, and Constrictotermes genera, as well as from the surrounding topsoil (0cm-10cm) and potential wooden food. The termite nests were signficant sinks for organic matter and its associated nutrients. The organic C contents ranged between 100g kg-1 and 500g kg-1 in the nests, compared to 17g kg-1 to 42g kg-1 in the surrounding topsoils. As lignin contents of the mounds were higher than in wood, lignin may be accumulated in preference to other organic compounds. This findings also sugests that the interior part of the nests is a region of higher organic matter turnover and lignin degradation.
650 $aorganic matter
650 $atropical rain forests
650 $aCupim
650 $aFloresta Tropical Úmida
650 $aMatéria Orgânica
653 $aAmazonas
653 $aBrasil
653 $aIsopteras
653 $aManaus
653 $aTermitade
700 1 $aMARTIUS, C.
700 1 $aGARCIA, M. V.
700 1 $aKUEPER, U.
700 1 $aULBRICH, D.
700 1 $aZECH, W.
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Registro original: |
Embrapa Amazônia Ocidental (CPAA) |
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Registro |
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URL |
Voltar
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Hortaliças. Para informações adicionais entre em contato com cnph.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Hortaliças. |
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Data corrente: |
26/10/2023 |
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Data da última atualização: |
26/10/2023 |
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Tipo da produção científica: |
Nota Técnica/Nota Científica |
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Autoria: |
BORGES, R. C. F.; FONSECA, M. E. N.; BOITEUX, L. S.; SANTOS, M. do D. M.; VELOSO, J. S.; AGUIAR, F. M.; REIS, A. |
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Afiliação: |
RAFAELA CRISTINA FERREIRA BORGES, UNIVERSIDADE DE BRASÍLIA; MARIA ESTHER DE N FONSECA BOITEUX, CNPH; LEONARDO SILVA BOITEUX, CNPH; MARIA DO DESTERRO MENDES SANTOS, UNIVERSIDADE DE BRASÍLIA; JOSIENE SILVA VELOSO, UNIVERSIDADE DE BRASÍLIA; FREDERICK MENDES AGUIAR, UNIVERSIDADE FEDERAL DE SÃO JOÃO DEL REI; AILTON REIS, CNPH. |
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Título: |
Powdery mildew of chayote (Sechium edule) caused by Podosphaera xanthii race 2 in Brazil |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Journal of Phytopathology, v. 171, p. 583-588, 2023. |
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DOI: |
DOI: 10.1111/jph.13211 |
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Idioma: |
Inglês |
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Conteúdo: |
The causal agent of chayote (Sechium edule) powdery mildew (PM) was identified in Brazil. Microscopic examinations revealed hyaline and ovoid conidia, borne in chains and displaying distinctive extra-vacuolar fibrosin bodies. Morphology agreed to the standard description of the anamorph of Podosphaera xanthii. To confirm this identification, genomic DNA was extracted from field isolates and used in PCR assays with ITS primers. Amplicons were Sanger-sequenced and the nucleotide alignments of all isolates displayed identity levels above 97% with P. xanthii isolates in GenBank database. Phylogenetic analyses indicated only P. xanthii isolates as the PM-inducing pathogens in chayote. Inoculation assays were performed using chayote, zucchini and a set of muskmelon differential cultigens for determination of the physiological races of P. xanthii. All chayote isolates were pathogenic to chayote and zucchini seedlings. Five isolates were also pathogenic to the muskmelon cultigens ?Hale's Best Jumbo?, ?Védrantais?, ?PMR-45? and ?Edisto 47?, whereas ?PMR-5? was asymptomatic during the experimental period. The virulence profile of chayote-infecting isolates allowed their classification as P. xanthii race 2. To the best of our knowledge, this is the first worldwide report of P. xanthii race 2 in chayote. This report has relevant epidemiological and disease management implications, allowing more sustainable chayote cultivation under tropical and subtropical conditions. |
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Thesagro: |
Chuchu; Oídio. |
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Thesaurus NAL: |
Sechium. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02171naa a2200241 a 4500
001 2157549
005 2023-10-26
008 2023 bl uuuu u00u1 u #d
024 7 $aDOI: 10.1111/jph.13211$2DOI
100 1 $aBORGES, R. C. F.
245 $aPowdery mildew of chayote (Sechium edule) caused by Podosphaera xanthii race 2 in Brazil$h[electronic resource]
260 $c2023
520 $aThe causal agent of chayote (Sechium edule) powdery mildew (PM) was identified in Brazil. Microscopic examinations revealed hyaline and ovoid conidia, borne in chains and displaying distinctive extra-vacuolar fibrosin bodies. Morphology agreed to the standard description of the anamorph of Podosphaera xanthii. To confirm this identification, genomic DNA was extracted from field isolates and used in PCR assays with ITS primers. Amplicons were Sanger-sequenced and the nucleotide alignments of all isolates displayed identity levels above 97% with P. xanthii isolates in GenBank database. Phylogenetic analyses indicated only P. xanthii isolates as the PM-inducing pathogens in chayote. Inoculation assays were performed using chayote, zucchini and a set of muskmelon differential cultigens for determination of the physiological races of P. xanthii. All chayote isolates were pathogenic to chayote and zucchini seedlings. Five isolates were also pathogenic to the muskmelon cultigens ?Hale's Best Jumbo?, ?Védrantais?, ?PMR-45? and ?Edisto 47?, whereas ?PMR-5? was asymptomatic during the experimental period. The virulence profile of chayote-infecting isolates allowed their classification as P. xanthii race 2. To the best of our knowledge, this is the first worldwide report of P. xanthii race 2 in chayote. This report has relevant epidemiological and disease management implications, allowing more sustainable chayote cultivation under tropical and subtropical conditions.
650 $aSechium
650 $aChuchu
650 $aOídio
700 1 $aFONSECA, M. E. N.
700 1 $aBOITEUX, L. S.
700 1 $aSANTOS, M. do D. M.
700 1 $aVELOSO, J. S.
700 1 $aAGUIAR, F. M.
700 1 $aREIS, A.
773 $tJournal of Phytopathology$gv. 171, p. 583-588, 2023.
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