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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
28/04/2023 |
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Data da última atualização: |
28/04/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
GIORDANO, D. F.; PASTOR, N.; ROUWS, L. F. M.; FREITAS, K. M. de; DEL CANTO, I.; ERAZO, J.; COELHO, I. S.; ODDINO, C. M.; TORRES, A. |
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Afiliação: |
Universidad Nacional Rio Cuarto; Universidad Nacional Rio Cuarto; LUC FELICIANUS MARIE ROUWS, CNPAB; KARINE MOURA DE FREITAS, CNPAB; University of Valencia; Universidad Nacional Rio Cuarto; UFRRJ; Universidad Nacional Rio Cuarto; Universidad Nacional Rio Cuarto. |
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Título: |
Trichoderma harzianum ITEM 3636 colonizes peanut roots as an endophyte and protects the plants against late leaf spot |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Symbiosis, v. 89, p. 337-352, 2023. |
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ISSN: |
0334-5114 |
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Idioma: |
Inglês |
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Conteúdo: |
Trichoderma harzianum ITEM 3636 has been tested against different soil-borne peanut diseases, applied as a seed treatment. The strain protected mature peanut plants suggesting a long lasting protection, and was isolated from plant roots several months after the sowing in field assays. We hypothesized that T. harzianum ITEM 3636 colonizes peanut roots as an endophyte as was demonstrated with other few strains, and in this interaction, the fungi reside in plant roots and can protect the plant against a foliar disease. The spreadability of conidia on the surface of peanut seeds and the mycelial growth inside root tissues were studied through scanning electron microscopy (SEM) and confocal laser scanning microscopy (CLSM), respectively. Conidia from ITEM 3636 had an appropriate distribution on coated seed surfaces. Furthermore, the fungal mycelium colonized root surfaces forming appressorium-like structures and swollen cells. The overlay of green and red confocal images clearly showed fungal hyphae grew internally through epidermal and cortical cells. Once inside the root, T. harzianum ITEM 3636 increased the levels of jasmonic acid in roots but not of salicylic acid. Also, the effect of seed treatment in peanut plant defense against Nothopassalora personata was evaluated under greenhouse conditions. ITEM 3636 significantly decreased the number of affected leaflets, late leaf spot (LLS) incidence and severity, and induced higher levels of defense related enzymes in leaflets after challenge with the pathogen. No direct activation of JA or SA pathways was observed in the leaves of Trichoderma-induced peanuts plants. T. harzianum decreased the concentration of ABA, which may reflect that the strain might improve defense mechanisms of the plant, through ABA content. MenosTrichoderma harzianum ITEM 3636 has been tested against different soil-borne peanut diseases, applied as a seed treatment. The strain protected mature peanut plants suggesting a long lasting protection, and was isolated from plant roots several months after the sowing in field assays. We hypothesized that T. harzianum ITEM 3636 colonizes peanut roots as an endophyte as was demonstrated with other few strains, and in this interaction, the fungi reside in plant roots and can protect the plant against a foliar disease. The spreadability of conidia on the surface of peanut seeds and the mycelial growth inside root tissues were studied through scanning electron microscopy (SEM) and confocal laser scanning microscopy (CLSM), respectively. Conidia from ITEM 3636 had an appropriate distribution on coated seed surfaces. Furthermore, the fungal mycelium colonized root surfaces forming appressorium-like structures and swollen cells. The overlay of green and red confocal images clearly showed fungal hyphae grew internally through epidermal and cortical cells. Once inside the root, T. harzianum ITEM 3636 increased the levels of jasmonic acid in roots but not of salicylic acid. Also, the effect of seed treatment in peanut plant defense against Nothopassalora personata was evaluated under greenhouse conditions. ITEM 3636 significantly decreased the number of affected leaflets, late leaf spot (LLS) incidence and severity, and induced higher levels of defense related enzymes in leaflets afte... Mostrar Tudo |
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Palavras-Chave: |
Biocontrol; Endophyte; Nothopassalora personata; Plant defense induction; Plant deseases treatment. |
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Thesaurus Nal: |
Peanuts. |
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Categoria do assunto: |
S Ciências Biológicas |
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Marc: |
LEADER 02650naa a2200301 a 4500
001 2153429
005 2023-04-28
008 2023 bl uuuu u00u1 u #d
022 $a0334-5114
100 1 $aGIORDANO, D. F.
245 $aTrichoderma harzianum ITEM 3636 colonizes peanut roots as an endophyte and protects the plants against late leaf spot$h[electronic resource]
260 $c2023
520 $aTrichoderma harzianum ITEM 3636 has been tested against different soil-borne peanut diseases, applied as a seed treatment. The strain protected mature peanut plants suggesting a long lasting protection, and was isolated from plant roots several months after the sowing in field assays. We hypothesized that T. harzianum ITEM 3636 colonizes peanut roots as an endophyte as was demonstrated with other few strains, and in this interaction, the fungi reside in plant roots and can protect the plant against a foliar disease. The spreadability of conidia on the surface of peanut seeds and the mycelial growth inside root tissues were studied through scanning electron microscopy (SEM) and confocal laser scanning microscopy (CLSM), respectively. Conidia from ITEM 3636 had an appropriate distribution on coated seed surfaces. Furthermore, the fungal mycelium colonized root surfaces forming appressorium-like structures and swollen cells. The overlay of green and red confocal images clearly showed fungal hyphae grew internally through epidermal and cortical cells. Once inside the root, T. harzianum ITEM 3636 increased the levels of jasmonic acid in roots but not of salicylic acid. Also, the effect of seed treatment in peanut plant defense against Nothopassalora personata was evaluated under greenhouse conditions. ITEM 3636 significantly decreased the number of affected leaflets, late leaf spot (LLS) incidence and severity, and induced higher levels of defense related enzymes in leaflets after challenge with the pathogen. No direct activation of JA or SA pathways was observed in the leaves of Trichoderma-induced peanuts plants. T. harzianum decreased the concentration of ABA, which may reflect that the strain might improve defense mechanisms of the plant, through ABA content.
650 $aPeanuts
653 $aBiocontrol
653 $aEndophyte
653 $aNothopassalora personata
653 $aPlant defense induction
653 $aPlant deseases treatment
700 1 $aPASTOR, N.
700 1 $aROUWS, L. F. M.
700 1 $aFREITAS, K. M. de
700 1 $aDEL CANTO, I.
700 1 $aERAZO, J.
700 1 $aCOELHO, I. S.
700 1 $aODDINO, C. M.
700 1 $aTORRES, A.
773 $tSymbiosis$gv. 89, p. 337-352, 2023.
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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Biblioteca(s): |
Embrapa Acre. |
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Data corrente: |
19/12/2016 |
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Data da última atualização: |
02/07/2021 |
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Tipo da produção científica: |
Nota Técnica/Nota Científica |
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Autoria: |
SANTOS, R. S.; MORAES, G. J. de; SALIMENA, F. R. G.; FERREIRA, C. de A. |
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Afiliação: |
RODRIGO SOUZA SANTOS, CPAF-Acre; Gilberto José de Moraes, Escola Superior de Agricultura “Luiz de Queiroz” (ESALQ/ USP); Fátima Regina Gonçalves Salimena, Universidade Federal de Juiz de Fora; Cleidiane de Andrade Ferreira, Agência de Defesa Agropecuária do Estado de Tocantins (ADAPEC). |
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Título: |
Priva lappulacea (L.) Pers. (Verbenaceae): nova hospedeira de Tetranychus gigas Pritchard & Baker (Acari: Tetranychidae) no Brasil. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
EntomoBrasilis, Vassouras, v. 9, n. 3, p. 216-219, 2016. |
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ISSN: |
1983-0572 |
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Idioma: |
Português |
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Conteúdo: |
Relata-se a infestação de Tetranychus gigas (Acari: Tetranychidae) em plantas de Priva lappulacea em área antropizada no município de Paraíso do Tocantins, Estado de Tocantins. Os ácaros foram observados em numerosas colônias, principalmente na face inferior das folhas. Após confirmação, registra-se, portanto uma nova planta hospedeira para T. gigas no Brasil, além do primeiro registro de P. lappulacea e de T. gigas para o Estado de Tocantins. |
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Palavras-Chave: |
First record; Paraíso do Tocantins (TO); Plagas de plantas; Primeiro registro; Primer registro; Priva lappulacea; Tetranychus gigas; Tocantins. |
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Thesagro: |
Ácaro; Praga de planta; Tetranichidae. |
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Thesaurus NAL: |
Mites; Plant pests; Verbena. |
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Categoria do assunto: |
O Insetos e Entomologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/151984/1/26223.pdf
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Marc: |
LEADER 01445naa a2200337 a 4500
001 2058881
005 2021-07-02
008 2016 bl uuuu u00u1 u #d
022 $a1983-0572
100 1 $aSANTOS, R. S.
245 $aPriva lappulacea (L.) Pers. (Verbenaceae)$bnova hospedeira de Tetranychus gigas Pritchard & Baker (Acari: Tetranychidae) no Brasil.$h[electronic resource]
260 $c2016
520 $aRelata-se a infestação de Tetranychus gigas (Acari: Tetranychidae) em plantas de Priva lappulacea em área antropizada no município de Paraíso do Tocantins, Estado de Tocantins. Os ácaros foram observados em numerosas colônias, principalmente na face inferior das folhas. Após confirmação, registra-se, portanto uma nova planta hospedeira para T. gigas no Brasil, além do primeiro registro de P. lappulacea e de T. gigas para o Estado de Tocantins.
650 $aMites
650 $aPlant pests
650 $aVerbena
650 $aÁcaro
650 $aPraga de planta
650 $aTetranichidae
653 $aFirst record
653 $aParaíso do Tocantins (TO)
653 $aPlagas de plantas
653 $aPrimeiro registro
653 $aPrimer registro
653 $aPriva lappulacea
653 $aTetranychus gigas
653 $aTocantins
700 1 $aMORAES, G. J. de
700 1 $aSALIMENA, F. R. G.
700 1 $aFERREIRA, C. de A.
773 $tEntomoBrasilis, Vassouras$gv. 9, n. 3, p. 216-219, 2016.
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