Inoculum density of Plectosporium alismatis, a potential mycoherbicide, in relation to control of the aquatic weed Sagittaria montevidensis

Detalhes bibliográficos
Autor(a) principal: Lima,Brenda Ventura
Data de Publicação: 2010
Outros Autores: Soares,Dartanhã J, Barreto,Robert W
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Tropical plant pathology (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1982-56762010000400005
Resumo: Sagitaria montevidensis (arrowhead) is one of the worst weeds of irrigated rice. Control of this weed by means of chemical herbicides has become increasingly difficult on account of herbicide resistance in populations of S. montevidensis. Mycoherbicides are recognized as potential alternative tools against S. montevidensis. In Australia, the fungus Plectosporium alismatis was reported as a possible mycoherbicide for Damansonium minus and other alismataceous weeds, but Australian isolates of the pathogen did not infect S. montevidensis. In contrast, Brazilian isolates of P. alismatis obtained from S. montevidensis have shown promise in controlling the weed. The present study investigated effects of different inoculum densities of a selected strain of P. alismatis on S. montevidensis. Respective densities of 2 x 10(6) and 2 x 10(7) conidia.mL-1 caused an average of 86 and 93 % leaf blight followed by growth cessation and death of the plants. It was concluded that a density of 2 x 10(6) conidia.mL-1 was sufficient to control S. montevidensis and that this density should be adopted as standard in future experiments.
id SBF-6_e364a3dc6efa2ec202969bc20a6e0d50
oai_identifier_str oai:scielo:S1982-56762010000400005
network_acronym_str SBF-6
network_name_str Tropical plant pathology (Online)
repository_id_str
spelling Inoculum density of Plectosporium alismatis, a potential mycoherbicide, in relation to control of the aquatic weed Sagittaria montevidensisRhynchosporium alismatisarrowheadbiological controlmycoherbicideSagitaria montevidensis (arrowhead) is one of the worst weeds of irrigated rice. Control of this weed by means of chemical herbicides has become increasingly difficult on account of herbicide resistance in populations of S. montevidensis. Mycoherbicides are recognized as potential alternative tools against S. montevidensis. In Australia, the fungus Plectosporium alismatis was reported as a possible mycoherbicide for Damansonium minus and other alismataceous weeds, but Australian isolates of the pathogen did not infect S. montevidensis. In contrast, Brazilian isolates of P. alismatis obtained from S. montevidensis have shown promise in controlling the weed. The present study investigated effects of different inoculum densities of a selected strain of P. alismatis on S. montevidensis. Respective densities of 2 x 10(6) and 2 x 10(7) conidia.mL-1 caused an average of 86 and 93 % leaf blight followed by growth cessation and death of the plants. It was concluded that a density of 2 x 10(6) conidia.mL-1 was sufficient to control S. montevidensis and that this density should be adopted as standard in future experiments.Sociedade Brasileira de Fitopatologia2010-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1982-56762010000400005Tropical Plant Pathology v.35 n.4 2010reponame:Tropical plant pathology (Online)instname:Sociedade Brasileira de Fitopatologiainstacron:SBF10.1590/S1982-56762010000400005info:eu-repo/semantics/openAccessLima,Brenda VenturaSoares,Dartanhã JBarreto,Robert Weng2010-11-03T00:00:00Zoai:scielo:S1982-56762010000400005Revistahttps://www.scielo.br/j/tpp/ONGhttps://old.scielo.br/oai/scielo-oai.phpsbf-revista@ufla.br1983-20521982-5676opendoar:2010-11-03T00:00Tropical plant pathology (Online) - Sociedade Brasileira de Fitopatologiafalse
dc.title.none.fl_str_mv Inoculum density of Plectosporium alismatis, a potential mycoherbicide, in relation to control of the aquatic weed Sagittaria montevidensis
title Inoculum density of Plectosporium alismatis, a potential mycoherbicide, in relation to control of the aquatic weed Sagittaria montevidensis
spellingShingle Inoculum density of Plectosporium alismatis, a potential mycoherbicide, in relation to control of the aquatic weed Sagittaria montevidensis
Lima,Brenda Ventura
Rhynchosporium alismatis
arrowhead
biological control
mycoherbicide
title_short Inoculum density of Plectosporium alismatis, a potential mycoherbicide, in relation to control of the aquatic weed Sagittaria montevidensis
title_full Inoculum density of Plectosporium alismatis, a potential mycoherbicide, in relation to control of the aquatic weed Sagittaria montevidensis
title_fullStr Inoculum density of Plectosporium alismatis, a potential mycoherbicide, in relation to control of the aquatic weed Sagittaria montevidensis
title_full_unstemmed Inoculum density of Plectosporium alismatis, a potential mycoherbicide, in relation to control of the aquatic weed Sagittaria montevidensis
title_sort Inoculum density of Plectosporium alismatis, a potential mycoherbicide, in relation to control of the aquatic weed Sagittaria montevidensis
author Lima,Brenda Ventura
author_facet Lima,Brenda Ventura
Soares,Dartanhã J
Barreto,Robert W
author_role author
author2 Soares,Dartanhã J
Barreto,Robert W
author2_role author
author
dc.contributor.author.fl_str_mv Lima,Brenda Ventura
Soares,Dartanhã J
Barreto,Robert W
dc.subject.por.fl_str_mv Rhynchosporium alismatis
arrowhead
biological control
mycoherbicide
topic Rhynchosporium alismatis
arrowhead
biological control
mycoherbicide
description Sagitaria montevidensis (arrowhead) is one of the worst weeds of irrigated rice. Control of this weed by means of chemical herbicides has become increasingly difficult on account of herbicide resistance in populations of S. montevidensis. Mycoherbicides are recognized as potential alternative tools against S. montevidensis. In Australia, the fungus Plectosporium alismatis was reported as a possible mycoherbicide for Damansonium minus and other alismataceous weeds, but Australian isolates of the pathogen did not infect S. montevidensis. In contrast, Brazilian isolates of P. alismatis obtained from S. montevidensis have shown promise in controlling the weed. The present study investigated effects of different inoculum densities of a selected strain of P. alismatis on S. montevidensis. Respective densities of 2 x 10(6) and 2 x 10(7) conidia.mL-1 caused an average of 86 and 93 % leaf blight followed by growth cessation and death of the plants. It was concluded that a density of 2 x 10(6) conidia.mL-1 was sufficient to control S. montevidensis and that this density should be adopted as standard in future experiments.
publishDate 2010
dc.date.none.fl_str_mv 2010-08-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1982-56762010000400005
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1982-56762010000400005
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1982-56762010000400005
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Fitopatologia
publisher.none.fl_str_mv Sociedade Brasileira de Fitopatologia
dc.source.none.fl_str_mv Tropical Plant Pathology v.35 n.4 2010
reponame:Tropical plant pathology (Online)
instname:Sociedade Brasileira de Fitopatologia
instacron:SBF
instname_str Sociedade Brasileira de Fitopatologia
instacron_str SBF
institution SBF
reponame_str Tropical plant pathology (Online)
collection Tropical plant pathology (Online)
repository.name.fl_str_mv Tropical plant pathology (Online) - Sociedade Brasileira de Fitopatologia
repository.mail.fl_str_mv sbf-revista@ufla.br
_version_ 1754824585359917056

Registros relacionados