Evaluation of DMI fungicides against species of Diplodia and Neofusicoccum associated with Botryosphaeria canker of grapevine

The Botryosphaeriaceae species have been widely studied and are considered a serious problem to the production of grapes worldwide. To aid in the development of control strategies for these fungi, in vitro experiments were conducted to evaluate the effectiveness of demethylation inhibiting (DMI) fun...

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Autores principales:	Torres,Carolina, Latorre,Bernardo A, Undurraga,Pedro, Besoain,Ximena
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal 2013
Materias:	Black dead arm bot canker fungicides myclobutanil prochloraz tebuconazole
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000100011
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spelling	oai:scielo:S0718-162020130001000112014-09-08Evaluation of DMI fungicides against species of Diplodia and Neofusicoccum associated with Botryosphaeria canker of grapevineTorres,CarolinaLatorre,Bernardo AUndurraga,PedroBesoain,Ximena Black dead arm bot canker fungicides myclobutanil prochloraz tebuconazole The Botryosphaeriaceae species have been widely studied and are considered a serious problem to the production of grapes worldwide. To aid in the development of control strategies for these fungi, in vitro experiments were conducted to evaluate the effectiveness of demethylation inhibiting (DMI) fungicides against Diplodia seriata, D. mutila, Neofusicoccum australe and N. parvum isolated from grapevine (Vitis vinifera). Fungicidal effectiveness was evaluated over a range of increasing concentrations using measurements of both the inhibition of conidial germination and the effects on mycelial growth. The effective concentrations (EC) necessary to inhibit conidial germination and mycelial growth by 50% (EC50) and 90% (EC90) were estimated by linear regression analysis between x = log10 of the fungicidal concentration and y = the Probit value of the inhibition percentage. The results demonstrate that tebuconazole, myclobutanil, prochloraz and prochloraz plus epoxiconazole exhibit considerable in vitro activity against D. mutila, D. seriata, N. australe and N. parvum. These DMI compounds were able to arrest conidial germination and inhibit mycelial growth. The EC50 values obtained for conidial germination were generally higher than the EC50 values obtained for mycelial growth, suggesting that mycelia are more sensitive to the DMI compounds than are conidia. However, the effectiveness of these DMI compounds in the vineyard must be studied before any final conclusions can be reached.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería ForestalCiencia e investigación agraria v.40 n.1 20132013-04-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000100011en10.4067/S0718-16202013000100011
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Black dead arm bot canker fungicides myclobutanil prochloraz tebuconazole
spellingShingle	Black dead arm bot canker fungicides myclobutanil prochloraz tebuconazole Torres,Carolina Latorre,Bernardo A Undurraga,Pedro Besoain,Ximena Evaluation of DMI fungicides against species of Diplodia and Neofusicoccum associated with Botryosphaeria canker of grapevine
description	The Botryosphaeriaceae species have been widely studied and are considered a serious problem to the production of grapes worldwide. To aid in the development of control strategies for these fungi, in vitro experiments were conducted to evaluate the effectiveness of demethylation inhibiting (DMI) fungicides against Diplodia seriata, D. mutila, Neofusicoccum australe and N. parvum isolated from grapevine (Vitis vinifera). Fungicidal effectiveness was evaluated over a range of increasing concentrations using measurements of both the inhibition of conidial germination and the effects on mycelial growth. The effective concentrations (EC) necessary to inhibit conidial germination and mycelial growth by 50% (EC50) and 90% (EC90) were estimated by linear regression analysis between x = log10 of the fungicidal concentration and y = the Probit value of the inhibition percentage. The results demonstrate that tebuconazole, myclobutanil, prochloraz and prochloraz plus epoxiconazole exhibit considerable in vitro activity against D. mutila, D. seriata, N. australe and N. parvum. These DMI compounds were able to arrest conidial germination and inhibit mycelial growth. The EC50 values obtained for conidial germination were generally higher than the EC50 values obtained for mycelial growth, suggesting that mycelia are more sensitive to the DMI compounds than are conidia. However, the effectiveness of these DMI compounds in the vineyard must be studied before any final conclusions can be reached.
author	Torres,Carolina Latorre,Bernardo A Undurraga,Pedro Besoain,Ximena
author_facet	Torres,Carolina Latorre,Bernardo A Undurraga,Pedro Besoain,Ximena
author_sort	Torres,Carolina
title	Evaluation of DMI fungicides against species of Diplodia and Neofusicoccum associated with Botryosphaeria canker of grapevine
title_short	Evaluation of DMI fungicides against species of Diplodia and Neofusicoccum associated with Botryosphaeria canker of grapevine
title_full	Evaluation of DMI fungicides against species of Diplodia and Neofusicoccum associated with Botryosphaeria canker of grapevine
title_fullStr	Evaluation of DMI fungicides against species of Diplodia and Neofusicoccum associated with Botryosphaeria canker of grapevine
title_full_unstemmed	Evaluation of DMI fungicides against species of Diplodia and Neofusicoccum associated with Botryosphaeria canker of grapevine
title_sort	evaluation of dmi fungicides against species of diplodia and neofusicoccum associated with botryosphaeria canker of grapevine
publisher	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000100011
work_keys_str_mv	AT torrescarolina evaluationofdmifungicidesagainstspeciesofdiplodiaandneofusicoccumassociatedwithbotryosphaeriacankerofgrapevine AT latorrebernardoa evaluationofdmifungicidesagainstspeciesofdiplodiaandneofusicoccumassociatedwithbotryosphaeriacankerofgrapevine AT undurragapedro evaluationofdmifungicidesagainstspeciesofdiplodiaandneofusicoccumassociatedwithbotryosphaeriacankerofgrapevine AT besoainximena evaluationofdmifungicidesagainstspeciesofdiplodiaandneofusicoccumassociatedwithbotryosphaeriacankerofgrapevine
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Evaluation of DMI fungicides against species of Diplodia and Neofusicoccum associated with Botryosphaeria canker of grapevine

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