Tamarix ramosissima wood canker and branch death in Argentina: assessment of the role of associated fungi and possible implications for classical biocontrol
- Autores
- Daddario, Juan Facundo Fabian; Bianchinotti, Maria Virginia; Anderson, Freda Elizabeth
- Año de publicación
- 2023
- Idioma
- inglés
- Tipo de recurso
- documento de conferencia
- Estado
- versión publicada
- Descripción
- Saltcedars (Tamarix spp.), are among the invasive alien shrubs and trees present in Argentina causing major ecological and economic problems. As such, they have been selected as one of the pilot programmes of the National Strategy on Invasive Alien Species. A biological control (BC) project against Tamarix spp. was initiated in 2017, funded by the Ministry of Science, Technology and Productive Innovation with the main objective of assessing the feasibility of introducing the defoliating and stem damaging beetle Diorhabda sublineata, a BC agent successfully released against Tamarix spp. in the USA. It is common practice for these projects, to record the organisms associated with the target in its adventive range, to identify any that may either interfere with the BC agents intended for release, or that may themselves have potential as such. To this end, surveys were conducted to search for fungal pathogens in Tamarix populations in Argentina. T. ramosissima trees showing discoloration and death of branches were found at two sites located around 700 km apart. Several fungi were identified associated with these symptoms, among which Cytospora unilocularis and Neomicrophaeropsis tamaricicola, appeared as the most likely causal agents. Both were isolated on artificial culture media to provide inoculum for pathogenicity tests. Branches of six-month-old T. ramosissima potted plants were inoculated with C. unilocularis by either placing a drop of a conidial suspension in water into ad-hoc produced wounds or by spraying undamaged ones. Inoculation with N. tamaricicola was performed only on wounded branches. Control plants were treated with water alone. Wounded plants inoculated with C. unilocularis developed cankers, branch discoloration and death of branches after two months. Pycnidia in association with the symptoms were also observed on one of the plants. The fungus was re-isolated from the cankers allowing for the completion of Koch's postulates. To our knowledge, this is the first report of C. unilocularis causing disease on T. ramosissima. In this ongoing experiment, incipient symptoms have developed so far on the plants inoculated with N. tamaricicola. Both fungi have recently been described from the plant´s native range, suggesting they must have arrived in Argentina together with their host. Because C. unilocularis seems to infect only through wounds, the effect of this pathogen would be enhanced should D. sublineata eventually be introduced, thus contributing to a better control of populations where the pathogen is already present.
Fil: Daddario, Juan Facundo Fabian. Universidad Nacional del Sur. Departamento de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina
Fil: Bianchinotti, Maria Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia; Argentina
Fil: Anderson, Freda Elizabeth. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina
XVI International Symposium on Biological Control of Weeds
Puerto Iguazú
Argentina
Fundación para el estudio de especies invasivas
Centro de Recursos Naturales Renovables de la Zona Semiárida - Materia
-
WOOD CANKER
BRANCH DEATH
BIOLOGICAL CONTROL
ARGENTINA - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/258319
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Tamarix ramosissima wood canker and branch death in Argentina: assessment of the role of associated fungi and possible implications for classical biocontrolDaddario, Juan Facundo FabianBianchinotti, Maria VirginiaAnderson, Freda ElizabethWOOD CANKERBRANCH DEATHBIOLOGICAL CONTROLARGENTINAhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Saltcedars (Tamarix spp.), are among the invasive alien shrubs and trees present in Argentina causing major ecological and economic problems. As such, they have been selected as one of the pilot programmes of the National Strategy on Invasive Alien Species. A biological control (BC) project against Tamarix spp. was initiated in 2017, funded by the Ministry of Science, Technology and Productive Innovation with the main objective of assessing the feasibility of introducing the defoliating and stem damaging beetle Diorhabda sublineata, a BC agent successfully released against Tamarix spp. in the USA. It is common practice for these projects, to record the organisms associated with the target in its adventive range, to identify any that may either interfere with the BC agents intended for release, or that may themselves have potential as such. To this end, surveys were conducted to search for fungal pathogens in Tamarix populations in Argentina. T. ramosissima trees showing discoloration and death of branches were found at two sites located around 700 km apart. Several fungi were identified associated with these symptoms, among which Cytospora unilocularis and Neomicrophaeropsis tamaricicola, appeared as the most likely causal agents. Both were isolated on artificial culture media to provide inoculum for pathogenicity tests. Branches of six-month-old T. ramosissima potted plants were inoculated with C. unilocularis by either placing a drop of a conidial suspension in water into ad-hoc produced wounds or by spraying undamaged ones. Inoculation with N. tamaricicola was performed only on wounded branches. Control plants were treated with water alone. Wounded plants inoculated with C. unilocularis developed cankers, branch discoloration and death of branches after two months. Pycnidia in association with the symptoms were also observed on one of the plants. The fungus was re-isolated from the cankers allowing for the completion of Koch's postulates. To our knowledge, this is the first report of C. unilocularis causing disease on T. ramosissima. In this ongoing experiment, incipient symptoms have developed so far on the plants inoculated with N. tamaricicola. Both fungi have recently been described from the plant´s native range, suggesting they must have arrived in Argentina together with their host. Because C. unilocularis seems to infect only through wounds, the effect of this pathogen would be enhanced should D. sublineata eventually be introduced, thus contributing to a better control of populations where the pathogen is already present.Fil: Daddario, Juan Facundo Fabian. Universidad Nacional del Sur. Departamento de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; ArgentinaFil: Bianchinotti, Maria Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia; ArgentinaFil: Anderson, Freda Elizabeth. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; ArgentinaXVI International Symposium on Biological Control of WeedsPuerto IguazúArgentinaFundación para el estudio de especies invasivasCentro de Recursos Naturales Renovables de la Zona SemiáridaInternational Symposium on biological control of weeds2023info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectSimposioBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/258319Tamarix ramosissima wood canker and branch death in Argentina: assessment of the role of associated fungi and possible implications for classical biocontrol; XVI International Symposium on Biological Control of Weeds; Puerto Iguazú; Argentina; 2023; 100-100CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.iobc-global.org/download/20230507-12_ISBCW_Iguazu_Proceedings.pdfInternacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:49:36Zoai:ri.conicet.gov.ar:11336/258319instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:49:36.997CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Tamarix ramosissima wood canker and branch death in Argentina: assessment of the role of associated fungi and possible implications for classical biocontrol |
title |
Tamarix ramosissima wood canker and branch death in Argentina: assessment of the role of associated fungi and possible implications for classical biocontrol |
spellingShingle |
Tamarix ramosissima wood canker and branch death in Argentina: assessment of the role of associated fungi and possible implications for classical biocontrol Daddario, Juan Facundo Fabian WOOD CANKER BRANCH DEATH BIOLOGICAL CONTROL ARGENTINA |
title_short |
Tamarix ramosissima wood canker and branch death in Argentina: assessment of the role of associated fungi and possible implications for classical biocontrol |
title_full |
Tamarix ramosissima wood canker and branch death in Argentina: assessment of the role of associated fungi and possible implications for classical biocontrol |
title_fullStr |
Tamarix ramosissima wood canker and branch death in Argentina: assessment of the role of associated fungi and possible implications for classical biocontrol |
title_full_unstemmed |
Tamarix ramosissima wood canker and branch death in Argentina: assessment of the role of associated fungi and possible implications for classical biocontrol |
title_sort |
Tamarix ramosissima wood canker and branch death in Argentina: assessment of the role of associated fungi and possible implications for classical biocontrol |
dc.creator.none.fl_str_mv |
Daddario, Juan Facundo Fabian Bianchinotti, Maria Virginia Anderson, Freda Elizabeth |
author |
Daddario, Juan Facundo Fabian |
author_facet |
Daddario, Juan Facundo Fabian Bianchinotti, Maria Virginia Anderson, Freda Elizabeth |
author_role |
author |
author2 |
Bianchinotti, Maria Virginia Anderson, Freda Elizabeth |
author2_role |
author author |
dc.subject.none.fl_str_mv |
WOOD CANKER BRANCH DEATH BIOLOGICAL CONTROL ARGENTINA |
topic |
WOOD CANKER BRANCH DEATH BIOLOGICAL CONTROL ARGENTINA |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Saltcedars (Tamarix spp.), are among the invasive alien shrubs and trees present in Argentina causing major ecological and economic problems. As such, they have been selected as one of the pilot programmes of the National Strategy on Invasive Alien Species. A biological control (BC) project against Tamarix spp. was initiated in 2017, funded by the Ministry of Science, Technology and Productive Innovation with the main objective of assessing the feasibility of introducing the defoliating and stem damaging beetle Diorhabda sublineata, a BC agent successfully released against Tamarix spp. in the USA. It is common practice for these projects, to record the organisms associated with the target in its adventive range, to identify any that may either interfere with the BC agents intended for release, or that may themselves have potential as such. To this end, surveys were conducted to search for fungal pathogens in Tamarix populations in Argentina. T. ramosissima trees showing discoloration and death of branches were found at two sites located around 700 km apart. Several fungi were identified associated with these symptoms, among which Cytospora unilocularis and Neomicrophaeropsis tamaricicola, appeared as the most likely causal agents. Both were isolated on artificial culture media to provide inoculum for pathogenicity tests. Branches of six-month-old T. ramosissima potted plants were inoculated with C. unilocularis by either placing a drop of a conidial suspension in water into ad-hoc produced wounds or by spraying undamaged ones. Inoculation with N. tamaricicola was performed only on wounded branches. Control plants were treated with water alone. Wounded plants inoculated with C. unilocularis developed cankers, branch discoloration and death of branches after two months. Pycnidia in association with the symptoms were also observed on one of the plants. The fungus was re-isolated from the cankers allowing for the completion of Koch's postulates. To our knowledge, this is the first report of C. unilocularis causing disease on T. ramosissima. In this ongoing experiment, incipient symptoms have developed so far on the plants inoculated with N. tamaricicola. Both fungi have recently been described from the plant´s native range, suggesting they must have arrived in Argentina together with their host. Because C. unilocularis seems to infect only through wounds, the effect of this pathogen would be enhanced should D. sublineata eventually be introduced, thus contributing to a better control of populations where the pathogen is already present. Fil: Daddario, Juan Facundo Fabian. Universidad Nacional del Sur. Departamento de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina Fil: Bianchinotti, Maria Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia; Argentina Fil: Anderson, Freda Elizabeth. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina XVI International Symposium on Biological Control of Weeds Puerto Iguazú Argentina Fundación para el estudio de especies invasivas Centro de Recursos Naturales Renovables de la Zona Semiárida |
description |
Saltcedars (Tamarix spp.), are among the invasive alien shrubs and trees present in Argentina causing major ecological and economic problems. As such, they have been selected as one of the pilot programmes of the National Strategy on Invasive Alien Species. A biological control (BC) project against Tamarix spp. was initiated in 2017, funded by the Ministry of Science, Technology and Productive Innovation with the main objective of assessing the feasibility of introducing the defoliating and stem damaging beetle Diorhabda sublineata, a BC agent successfully released against Tamarix spp. in the USA. It is common practice for these projects, to record the organisms associated with the target in its adventive range, to identify any that may either interfere with the BC agents intended for release, or that may themselves have potential as such. To this end, surveys were conducted to search for fungal pathogens in Tamarix populations in Argentina. T. ramosissima trees showing discoloration and death of branches were found at two sites located around 700 km apart. Several fungi were identified associated with these symptoms, among which Cytospora unilocularis and Neomicrophaeropsis tamaricicola, appeared as the most likely causal agents. Both were isolated on artificial culture media to provide inoculum for pathogenicity tests. Branches of six-month-old T. ramosissima potted plants were inoculated with C. unilocularis by either placing a drop of a conidial suspension in water into ad-hoc produced wounds or by spraying undamaged ones. Inoculation with N. tamaricicola was performed only on wounded branches. Control plants were treated with water alone. Wounded plants inoculated with C. unilocularis developed cankers, branch discoloration and death of branches after two months. Pycnidia in association with the symptoms were also observed on one of the plants. The fungus was re-isolated from the cankers allowing for the completion of Koch's postulates. To our knowledge, this is the first report of C. unilocularis causing disease on T. ramosissima. In this ongoing experiment, incipient symptoms have developed so far on the plants inoculated with N. tamaricicola. Both fungi have recently been described from the plant´s native range, suggesting they must have arrived in Argentina together with their host. Because C. unilocularis seems to infect only through wounds, the effect of this pathogen would be enhanced should D. sublineata eventually be introduced, thus contributing to a better control of populations where the pathogen is already present. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/conferenceObject Simposio Book http://purl.org/coar/resource_type/c_5794 info:ar-repo/semantics/documentoDeConferencia |
status_str |
publishedVersion |
format |
conferenceObject |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/258319 Tamarix ramosissima wood canker and branch death in Argentina: assessment of the role of associated fungi and possible implications for classical biocontrol; XVI International Symposium on Biological Control of Weeds; Puerto Iguazú; Argentina; 2023; 100-100 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/258319 |
identifier_str_mv |
Tamarix ramosissima wood canker and branch death in Argentina: assessment of the role of associated fungi and possible implications for classical biocontrol; XVI International Symposium on Biological Control of Weeds; Puerto Iguazú; Argentina; 2023; 100-100 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://www.iobc-global.org/download/20230507-12_ISBCW_Iguazu_Proceedings.pdf |
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info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
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https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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application/pdf application/pdf application/pdf |
dc.coverage.none.fl_str_mv |
Internacional |
dc.publisher.none.fl_str_mv |
International Symposium on biological control of weeds |
publisher.none.fl_str_mv |
International Symposium on biological control of weeds |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) |
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CONICET Digital (CONICET) |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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