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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
06/09/2024 |
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Data da última atualização: |
10/12/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SILVA, M. de F.; FACCIOLI, F. C.; HONÓRIO, A. P.; FONSECA, A. R.; BOARI, A. de J.; OLIVEIRA, C. M. G. de; BUONICONTRO, D. S. |
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Afiliação: |
MARCELA DE FREITAS SILVA, UNIVERSIDADE FEDERAL DE VIÇOSA; FELIPE CASTRO FACCIOLI, UNIVERSIDADE FEDERAL DE VIÇOSA; AMANDA PEREIRA HONÓRIO, UNIVERSIDADE FEDERAL DE VIÇOSA; ANDRESSA RODRIGUES FONSECA, UNIVERSIDADE FEDERAL DE VIÇOSA; ALESSANDRA DE JESUS BOARI, CPATU; CLÁUDIO MARCELO GONÇALVES DE OLIVEIRA, INSTITUTO BIOLÓGICO; DALILA SÊNI BUONICONTRO, UNIVERSIDADE FEDERAL DE VIÇOSA. |
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Título: |
First report of angular leaf spot in Acmella oleracea caused by the foliar nematode Aphelenchoides pseudobesseyi. |
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Ano de publicação: |
2024 |
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Fonte/Imprenta: |
Journal of Plant Diseases and Protection, v. 131, p. 1707-1720, 2024. |
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DOI: |
https://doi.org/10.1007/s41348-024-00982-2 |
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Idioma: |
Inglês |
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Conteúdo: |
Jambu plants (Acmella oleracea) exhibiting necrotic angular leaf spots were collected in Belém—Pará, Brazil. Suspected to be a disease caused by nematodes, the jambu leaves were processed and the presence of nematodes from Aphelenchoides genus was observed using a light microscope. These nematodes were reared on Fusarium sp. and subsequently morphologically and molecularly characterized to species level. Aphelenchoides sp. associated with jambu exhibited morphological and morphometric characteristics similar to those within the A. besseyi complex (A. besseyi sensu stricto, A. oryzae and A. pseudobesseyi). Still, these characteristics were insufficient to confirm the identity of this population. However, the Bayesian inference analysis, utilizing the expansion segment of the large subunit (D2-D3 LSU) of nuclear ribosomal DNA, yielded results with a high posterior probability, indicating that the Aphelenchoides sp. associated with jambu belongs to the A. pseudobesseyi species. Under controlled conditions, the reproduction of the nematode in the leaf tissues (RF > 1) was observed, resulting in disease symptoms. The highest reproductive rate of A. pseudobesseyi (RF = 2.6) was observed from inoculation with 100 nematodes per leaf (500 nematodes per plant). Based on Seinhorst analysis, the tolerance limit in jambu plants infected with A. pseudobesseyi was 250 nematodes. It is concluded that A. pseudobesseyi is the etiological agent of the jambu angular leaf spot. For future evaluation of jambu resistance on A. pseudobesseyi, an inoculate maximum of 100 nematodes per leaf is recommended. MenosJambu plants (Acmella oleracea) exhibiting necrotic angular leaf spots were collected in Belém—Pará, Brazil. Suspected to be a disease caused by nematodes, the jambu leaves were processed and the presence of nematodes from Aphelenchoides genus was observed using a light microscope. These nematodes were reared on Fusarium sp. and subsequently morphologically and molecularly characterized to species level. Aphelenchoides sp. associated with jambu exhibited morphological and morphometric characteristics similar to those within the A. besseyi complex (A. besseyi sensu stricto, A. oryzae and A. pseudobesseyi). Still, these characteristics were insufficient to confirm the identity of this population. However, the Bayesian inference analysis, utilizing the expansion segment of the large subunit (D2-D3 LSU) of nuclear ribosomal DNA, yielded results with a high posterior probability, indicating that the Aphelenchoides sp. associated with jambu belongs to the A. pseudobesseyi species. Under controlled conditions, the reproduction of the nematode in the leaf tissues (RF > 1) was observed, resulting in disease symptoms. The highest reproductive rate of A. pseudobesseyi (RF = 2.6) was observed from inoculation with 100 nematodes per leaf (500 nematodes per plant). Based on Seinhorst analysis, the tolerance limit in jambu plants infected with A. pseudobesseyi was 250 nematodes. It is concluded that A. pseudobesseyi is the etiological agent of the jambu angular leaf spot. For future evalua... Mostrar Tudo |
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Palavras-Chave: |
Integrative taxonomy; Jambu; Plant-parasitic nematodes. |
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Thesaurus Nal: |
Etiology; Pathogenicity. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02472naa a2200265 a 4500
001 2167233
005 2024-12-10
008 2024 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s41348-024-00982-2$2DOI
100 1 $aSILVA, M. de F.
245 $aFirst report of angular leaf spot in Acmella oleracea caused by the foliar nematode Aphelenchoides pseudobesseyi.$h[electronic resource]
260 $c2024
520 $aJambu plants (Acmella oleracea) exhibiting necrotic angular leaf spots were collected in Belém—Pará, Brazil. Suspected to be a disease caused by nematodes, the jambu leaves were processed and the presence of nematodes from Aphelenchoides genus was observed using a light microscope. These nematodes were reared on Fusarium sp. and subsequently morphologically and molecularly characterized to species level. Aphelenchoides sp. associated with jambu exhibited morphological and morphometric characteristics similar to those within the A. besseyi complex (A. besseyi sensu stricto, A. oryzae and A. pseudobesseyi). Still, these characteristics were insufficient to confirm the identity of this population. However, the Bayesian inference analysis, utilizing the expansion segment of the large subunit (D2-D3 LSU) of nuclear ribosomal DNA, yielded results with a high posterior probability, indicating that the Aphelenchoides sp. associated with jambu belongs to the A. pseudobesseyi species. Under controlled conditions, the reproduction of the nematode in the leaf tissues (RF > 1) was observed, resulting in disease symptoms. The highest reproductive rate of A. pseudobesseyi (RF = 2.6) was observed from inoculation with 100 nematodes per leaf (500 nematodes per plant). Based on Seinhorst analysis, the tolerance limit in jambu plants infected with A. pseudobesseyi was 250 nematodes. It is concluded that A. pseudobesseyi is the etiological agent of the jambu angular leaf spot. For future evaluation of jambu resistance on A. pseudobesseyi, an inoculate maximum of 100 nematodes per leaf is recommended.
650 $aEtiology
650 $aPathogenicity
653 $aIntegrative taxonomy
653 $aJambu
653 $aPlant-parasitic nematodes
700 1 $aFACCIOLI, F. C.
700 1 $aHONÓRIO, A. P.
700 1 $aFONSECA, A. R.
700 1 $aBOARI, A. de J.
700 1 $aOLIVEIRA, C. M. G. de
700 1 $aBUONICONTRO, D. S.
773 $tJournal of Plant Diseases and Protection$gv. 131, p. 1707-1720, 2024.
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