In vitro and in planta studies on temperature adaptation of exserohilum turcicum isolates from maize in europe and south america

Detalhes bibliográficos
Autor(a) principal: Navarro, Barbara Ludwig
Data de Publicação: 2021
Outros Autores: Campos, Raphael de Araújo [UNESP], de Godoy Gasparoto, Maria Cândida [UNESP], Tiedemann, Andreas von
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.3390/pathogens10020154
http://hdl.handle.net/11449/207240
Resumo: Northern Corn Leaf Blight (NCLB) is a fungal leaf disease in maize caused by Exserohilum turcicum. NCLB occurs worldwide, from tropical to temperate zones raising the question about plasticity of temperature adaptation of local isolates of the pathogen. Seven isolates of E. turcicum originating from South America and seven from Europe were compared for their response to temperature variations in vitro and in vivo between 15 and 30 °C. In vitro, isolates originating from Europe and South America significantly differed in mycelial growth rate at 30 °C and in sporulation at 25 °C and 30 °C. Aggressiveness of E. turcicum isolates was evaluated on three susceptible maize cultivars (maize lines B37, Sus1 and the German hybrid Niklas) under different day/night temperature regimes (15/10 °C, 20/15 °C, 25/20 °C, or 30/25 °C) with a photoperiod of 14 h. Aggressiveness, recorded as area under the disease progress curve (AUDPC), of South American isolates was higher than for European isolates at 15 °C, 20 °C and 25 °C, and for sporulation in vivo in all temperatures. In general, aggressiveness components were most influenced by temperature. Therefore, multivariate analysis was performed with aggressiveness component data at 30 °C, which expressed the highest number of variables with significant differences between isolate origins. According to their aggressiveness, European and South American isolates can be grouped separately, demonstrating that South American isolates are better adapted to higher temperatures and display a higher level of aggressiveness under similar conditions than European isolates from a cool climate. It is concluded that plasticity of temperature adaptation in E. turcicum populations is relatively large and allowed E. turcicum to follow the recent expansion of maize cultivation into cool climate zones in Europe. However, our data suggest that adaptation to higher temperature is likely to increase aggressiveness of NCLB on maize in cooler climate zones when experiencing further climate warming. This plasticity in adaptation to environmental conditions of E. turcicum may also hamper the success of breeding programs as it may decrease the durability of resistance.
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spelling In vitro and in planta studies on temperature adaptation of exserohilum turcicum isolates from maize in europe and south americaAggressivenessClimate warmingLeaf diseaseSetosphaeria turcicaNorthern Corn Leaf Blight (NCLB) is a fungal leaf disease in maize caused by Exserohilum turcicum. NCLB occurs worldwide, from tropical to temperate zones raising the question about plasticity of temperature adaptation of local isolates of the pathogen. Seven isolates of E. turcicum originating from South America and seven from Europe were compared for their response to temperature variations in vitro and in vivo between 15 and 30 °C. In vitro, isolates originating from Europe and South America significantly differed in mycelial growth rate at 30 °C and in sporulation at 25 °C and 30 °C. Aggressiveness of E. turcicum isolates was evaluated on three susceptible maize cultivars (maize lines B37, Sus1 and the German hybrid Niklas) under different day/night temperature regimes (15/10 °C, 20/15 °C, 25/20 °C, or 30/25 °C) with a photoperiod of 14 h. Aggressiveness, recorded as area under the disease progress curve (AUDPC), of South American isolates was higher than for European isolates at 15 °C, 20 °C and 25 °C, and for sporulation in vivo in all temperatures. In general, aggressiveness components were most influenced by temperature. Therefore, multivariate analysis was performed with aggressiveness component data at 30 °C, which expressed the highest number of variables with significant differences between isolate origins. According to their aggressiveness, European and South American isolates can be grouped separately, demonstrating that South American isolates are better adapted to higher temperatures and display a higher level of aggressiveness under similar conditions than European isolates from a cool climate. It is concluded that plasticity of temperature adaptation in E. turcicum populations is relatively large and allowed E. turcicum to follow the recent expansion of maize cultivation into cool climate zones in Europe. However, our data suggest that adaptation to higher temperature is likely to increase aggressiveness of NCLB on maize in cooler climate zones when experiencing further climate warming. This plasticity in adaptation to environmental conditions of E. turcicum may also hamper the success of breeding programs as it may decrease the durability of resistance.Bundesministerium für Ernährung und LandwirtschaftDepartment of Crop Sciences Division of Plant Pathology and Crop Protection Georg-August-Universität Göttingen, Grisebachstraße 6UNESP-São Paulo State University Campus of Registro, Av. Nelson Brihi Badur, 430, RegistroUNESP-São Paulo State University Campus of Registro, Av. Nelson Brihi Badur, 430, RegistroBundesministerium für Ernährung und Landwirtschaft: 2818202915Georg-August-Universität GöttingenUniversidade Estadual Paulista (Unesp)Navarro, Barbara LudwigCampos, Raphael de Araújo [UNESP]de Godoy Gasparoto, Maria Cândida [UNESP]Tiedemann, Andreas von2021-06-25T10:51:46Z2021-06-25T10:51:46Z2021-02-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1-16http://dx.doi.org/10.3390/pathogens10020154Pathogens, v. 10, n. 2, p. 1-16, 2021.2076-0817http://hdl.handle.net/11449/20724010.3390/pathogens100201542-s2.0-85100454306Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPathogensinfo:eu-repo/semantics/openAccess2024-05-03T13:19:57Zoai:repositorio.unesp.br:11449/207240Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:51:38.204868Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv In vitro and in planta studies on temperature adaptation of exserohilum turcicum isolates from maize in europe and south america
title In vitro and in planta studies on temperature adaptation of exserohilum turcicum isolates from maize in europe and south america
spellingShingle In vitro and in planta studies on temperature adaptation of exserohilum turcicum isolates from maize in europe and south america
Navarro, Barbara Ludwig
Aggressiveness
Climate warming
Leaf disease
Setosphaeria turcica
title_short In vitro and in planta studies on temperature adaptation of exserohilum turcicum isolates from maize in europe and south america
title_full In vitro and in planta studies on temperature adaptation of exserohilum turcicum isolates from maize in europe and south america
title_fullStr In vitro and in planta studies on temperature adaptation of exserohilum turcicum isolates from maize in europe and south america
title_full_unstemmed In vitro and in planta studies on temperature adaptation of exserohilum turcicum isolates from maize in europe and south america
title_sort In vitro and in planta studies on temperature adaptation of exserohilum turcicum isolates from maize in europe and south america
author Navarro, Barbara Ludwig
author_facet Navarro, Barbara Ludwig
Campos, Raphael de Araújo [UNESP]
de Godoy Gasparoto, Maria Cândida [UNESP]
Tiedemann, Andreas von
author_role author
author2 Campos, Raphael de Araújo [UNESP]
de Godoy Gasparoto, Maria Cândida [UNESP]
Tiedemann, Andreas von
author2_role author
author
author
dc.contributor.none.fl_str_mv Georg-August-Universität Göttingen
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Navarro, Barbara Ludwig
Campos, Raphael de Araújo [UNESP]
de Godoy Gasparoto, Maria Cândida [UNESP]
Tiedemann, Andreas von
dc.subject.por.fl_str_mv Aggressiveness
Climate warming
Leaf disease
Setosphaeria turcica
topic Aggressiveness
Climate warming
Leaf disease
Setosphaeria turcica
description Northern Corn Leaf Blight (NCLB) is a fungal leaf disease in maize caused by Exserohilum turcicum. NCLB occurs worldwide, from tropical to temperate zones raising the question about plasticity of temperature adaptation of local isolates of the pathogen. Seven isolates of E. turcicum originating from South America and seven from Europe were compared for their response to temperature variations in vitro and in vivo between 15 and 30 °C. In vitro, isolates originating from Europe and South America significantly differed in mycelial growth rate at 30 °C and in sporulation at 25 °C and 30 °C. Aggressiveness of E. turcicum isolates was evaluated on three susceptible maize cultivars (maize lines B37, Sus1 and the German hybrid Niklas) under different day/night temperature regimes (15/10 °C, 20/15 °C, 25/20 °C, or 30/25 °C) with a photoperiod of 14 h. Aggressiveness, recorded as area under the disease progress curve (AUDPC), of South American isolates was higher than for European isolates at 15 °C, 20 °C and 25 °C, and for sporulation in vivo in all temperatures. In general, aggressiveness components were most influenced by temperature. Therefore, multivariate analysis was performed with aggressiveness component data at 30 °C, which expressed the highest number of variables with significant differences between isolate origins. According to their aggressiveness, European and South American isolates can be grouped separately, demonstrating that South American isolates are better adapted to higher temperatures and display a higher level of aggressiveness under similar conditions than European isolates from a cool climate. It is concluded that plasticity of temperature adaptation in E. turcicum populations is relatively large and allowed E. turcicum to follow the recent expansion of maize cultivation into cool climate zones in Europe. However, our data suggest that adaptation to higher temperature is likely to increase aggressiveness of NCLB on maize in cooler climate zones when experiencing further climate warming. This plasticity in adaptation to environmental conditions of E. turcicum may also hamper the success of breeding programs as it may decrease the durability of resistance.
publishDate 2021
dc.date.none.fl_str_mv 2021-06-25T10:51:46Z
2021-06-25T10:51:46Z
2021-02-01
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.3390/pathogens10020154
Pathogens, v. 10, n. 2, p. 1-16, 2021.
2076-0817
http://hdl.handle.net/11449/207240
10.3390/pathogens10020154
2-s2.0-85100454306
url http://dx.doi.org/10.3390/pathogens10020154
http://hdl.handle.net/11449/207240
identifier_str_mv Pathogens, v. 10, n. 2, p. 1-16, 2021.
2076-0817
10.3390/pathogens10020154
2-s2.0-85100454306
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Pathogens
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.format.none.fl_str_mv 1-16
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
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