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Registro Completo |
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Biblioteca(s): |
Embrapa Agricultura Digital. |
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Data corrente: |
06/07/2009 |
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Data da última atualização: |
26/06/2012 |
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Autoria: |
OSSWALD, W. F.; STANGARLIN, J. R.; NICHOLSON, R. L.; BRUMMER, M.; WULFF, N. A.; DI PIERO, R. M.; PICCININ, E.; DI CIERO, L.; HOTO, F. V.; PASCHOLATI, S. F. |
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Afiliação: |
WOLFGANG F. OSSWALD, Technical University of Munich; JOSE R. STANGARLIN, ESALQ/USP; RALPH L. NICHOLSON, Purdue University; MARIA BRUMMER, Technical University of Munich; NELSON A. WULFF, ESALQ/USP; ROBSON M. DI PIERO, ESALQ/USP; EVERALDO PICCININ, ESALQ/USP; LUCIANA DI CIERO, ESALQ/USP; FABIANA V. HOTO, ESALQ/USP; SERGIO F. PASCHOLATI, ESALQ/USP. |
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Título: |
The effect of acibenzolar-S-methyl on phytoalexin and PR-protein induction on sorghum mesocotyls and on Colletotrichum sublineolum. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
Summa Phytopathologica, Botucatu, v. 30, n. 4, p. 415-420, Oct./Dec. 2004. |
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Idioma: |
Inglês |
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Conteúdo: |
Treatment of sorghum mesocotyls with the chemical activator benzo(1, 2, 3) thiadiazole-7-carbothioic acid S-methyl ester (BTH, acibenzolar-S-methyl) caused an induction of the phytoalexin apigeninidin.The induction became visible with 5 ppm BTH after an incubation time of 30 hours. The synthesis of three constitutively expressed B-1,3-glucanase isoforms was inhibited by BTH, but no significant effect of BTH was seen on the induction of a sorghum chitinase as demonstrated by immunoblotting experiments with specific antibodies. Besides these effects on sorghum mesocotyls, BTH inhibited spore germination, germ tube and appressorium formation of the sorghum pathogen, Colletotrichum sublineolum. Spore germination and germ tube formation was significantly reduced with 5 ppm BTH, whereas inhibition of appressorium formation started with 10 ppm BTH. Finally, we demonstrated that mycelial growth of the pathogen was also reduced between 50 and 80% with 100 and 200 ppm BTH. Thus, BTH might act on the host pathogen interaction between sorghum and C. sublineolum as a fungitoxic compound and simultaneously as a resistance inducer. |
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Palavras-Chave: |
Ativador químico; B-1,3-glucanases; Benzotiadiazole; BTH; Mesocótilos de sorgo; Quitinases; Resistência induzida. |
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Thesaurus Nal: |
Colletotrichum sublineolum. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02105naa a2200325 a 4500
001 1082924
005 2012-06-26
008 2004 bl uuuu u00u1 u #d
100 1 $aOSSWALD, W. F.
245 $aThe effect of acibenzolar-S-methyl on phytoalexin and PR-protein induction on sorghum mesocotyls and on Colletotrichum sublineolum.
260 $c2004
520 $aTreatment of sorghum mesocotyls with the chemical activator benzo(1, 2, 3) thiadiazole-7-carbothioic acid S-methyl ester (BTH, acibenzolar-S-methyl) caused an induction of the phytoalexin apigeninidin.The induction became visible with 5 ppm BTH after an incubation time of 30 hours. The synthesis of three constitutively expressed B-1,3-glucanase isoforms was inhibited by BTH, but no significant effect of BTH was seen on the induction of a sorghum chitinase as demonstrated by immunoblotting experiments with specific antibodies. Besides these effects on sorghum mesocotyls, BTH inhibited spore germination, germ tube and appressorium formation of the sorghum pathogen, Colletotrichum sublineolum. Spore germination and germ tube formation was significantly reduced with 5 ppm BTH, whereas inhibition of appressorium formation started with 10 ppm BTH. Finally, we demonstrated that mycelial growth of the pathogen was also reduced between 50 and 80% with 100 and 200 ppm BTH. Thus, BTH might act on the host pathogen interaction between sorghum and C. sublineolum as a fungitoxic compound and simultaneously as a resistance inducer.
650 $aColletotrichum sublineolum
653 $aAtivador químico
653 $aB-1,3-glucanases
653 $aBenzotiadiazole
653 $aBTH
653 $aMesocótilos de sorgo
653 $aQuitinases
653 $aResistência induzida
700 1 $aSTANGARLIN, J. R.
700 1 $aNICHOLSON, R. L.
700 1 $aBRUMMER, M.
700 1 $aWULFF, N. A.
700 1 $aDI PIERO, R. M.
700 1 $aPICCININ, E.
700 1 $aDI CIERO, L.
700 1 $aHOTO, F. V.
700 1 $aPASCHOLATI, S. F.
773 $tSumma Phytopathologica, Botucatu$gv. 30, n. 4, p. 415-420, Oct./Dec. 2004.
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Registro original: |
Embrapa Agricultura Digital (CNPTIA) |
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