Temperature and light intensity interaction on Cercospora coffeicola sporulation and conidia germination

Detalhes bibliográficos
Autor(a) principal: Silva, Marília Goulart da
Data de Publicação: 2016
Outros Autores: Pozza, Edson Ampélio, Lima, Caio Vitor Rodrigues Vaz de, Fernandes, Tales Jesus
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFLA
Texto Completo: http://repositorio.ufla.br/jspui/handle/1/29896
Resumo: Difficulty in obtaining abundant sporulation in culture of many species of Cercospora may be the limiting factor for studies of biology, systematics, and inoculation of the genus. Therefore, it is necessary to understand the nutritional and environmental requirements that influence mycelial growth, sporulation and germination. As it is difficult to obtain conidia of Cercospora coffeicola in vitro, different temperatures (17, 22, 27, and 32 °C) and light intensities (80, 160, 240, and 320 μmol m-2 s-1) were evaluated to optimize pathogen sporulation and assess favorable conditions for spore germination, aiming for a strategy of disease control. The dark treatment (0 μmol m-2 s-1) was added for sporulation. A significant interaction was found between temperature and light intensity for both variables. The highest sporulation rate of C. coffeicola occurred at a light intensity of 240 μmol m-2 s-1 and air temperature of 22 °C, reaching 5.9x106 con mL-1. Germination was higher at temperature 17 °C and light intensity of 320 μmol m-2 s-1, reaching 52%. Interaction between light intensity and temperature proved to influence the processes of sporulation and germination of C. coffeicola.
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spelling Temperature and light intensity interaction on Cercospora coffeicola sporulation and conidia germinationInteração da temperatura e intensidade luminosa na esporulação e germinação de conídios de Cercopora coffeicolaEnvironmental variablesCercospora leaf spotEsporulaçãoGerminaçãoVariáveis ambientaisMancha de folha de CercosporaSporulationGerminationDifficulty in obtaining abundant sporulation in culture of many species of Cercospora may be the limiting factor for studies of biology, systematics, and inoculation of the genus. Therefore, it is necessary to understand the nutritional and environmental requirements that influence mycelial growth, sporulation and germination. As it is difficult to obtain conidia of Cercospora coffeicola in vitro, different temperatures (17, 22, 27, and 32 °C) and light intensities (80, 160, 240, and 320 μmol m-2 s-1) were evaluated to optimize pathogen sporulation and assess favorable conditions for spore germination, aiming for a strategy of disease control. The dark treatment (0 μmol m-2 s-1) was added for sporulation. A significant interaction was found between temperature and light intensity for both variables. The highest sporulation rate of C. coffeicola occurred at a light intensity of 240 μmol m-2 s-1 and air temperature of 22 °C, reaching 5.9x106 con mL-1. Germination was higher at temperature 17 °C and light intensity of 320 μmol m-2 s-1, reaching 52%. Interaction between light intensity and temperature proved to influence the processes of sporulation and germination of C. coffeicola.Obter abundante esporulação em meio de cultura, para muitas espécies de Cercospora, pode ser o fator limitante em estudos de biologia, sistemática e inoculação das espécies do gênero. Por isso, faz-se necessário o entendimento dos requerimentos nutricionais e ambientais, os quais influenciam o crescimento micelial, a esporulação e a germinação Em razão da dificuldade de obter conídios de Cercospora coffeicola in vitro, objetivou-se avaliar diferentes condições de temperatura (17, 22, 27 e 32 °C) e intensidade luminosa (80, 160, 240 e 320 µmol m-2 s-1), com o intuito de otimizar a esporulação do patógeno e avaliar as condições favoráveis à germinação dos conídios, visando a táticas de controle da doença. Para a esporulação, adicionou-se o tratamento escuro (0 µmol m-2 s-1). Observou-se interação significativa entre temperatura e intensidade luminosa para ambas as variáveis testadas. A maior esporulação de C. coffeicola foi observada na intensidade de 240 µmol m-2 s-1 e na temperatura de 22 °C, atingindo 5,9x106 con mL-1. Com relação à germinação, esta foi maior na temperatura de 17 °C e na intensidade luminosa de 320 µmol m-2s-1, atingindo 52%. A interação entre intensidade luminosa e temperatura do ar, influenciou os processos de esporulação e germinação de C. coffeicola.Universidade Federal de Lavras2018-08-03T18:48:59Z2018-08-03T18:48:59Z2016-03info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfSILVA, M. G. da et al. Temperature and light intensity interaction on Cercospora coffeicola sporulation and conidia germination. Ciência e Agrotecnologia, Lavras, v. 40, n. 2, p. 198-204, Mar./Apr. 2016.http://repositorio.ufla.br/jspui/handle/1/29896Ciência e Agrotecnologiareponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessSilva, Marília Goulart daPozza, Edson AmpélioLima, Caio Vitor Rodrigues Vaz deFernandes, Tales Jesuseng2023-05-26T19:51:28Zoai:localhost:1/29896Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2023-05-26T19:51:28Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv Temperature and light intensity interaction on Cercospora coffeicola sporulation and conidia germination
Interação da temperatura e intensidade luminosa na esporulação e germinação de conídios de Cercopora coffeicola
title Temperature and light intensity interaction on Cercospora coffeicola sporulation and conidia germination
spellingShingle Temperature and light intensity interaction on Cercospora coffeicola sporulation and conidia germination
Silva, Marília Goulart da
Environmental variables
Cercospora leaf spot
Esporulação
Germinação
Variáveis ambientais
Mancha de folha de Cercospora
Sporulation
Germination
title_short Temperature and light intensity interaction on Cercospora coffeicola sporulation and conidia germination
title_full Temperature and light intensity interaction on Cercospora coffeicola sporulation and conidia germination
title_fullStr Temperature and light intensity interaction on Cercospora coffeicola sporulation and conidia germination
title_full_unstemmed Temperature and light intensity interaction on Cercospora coffeicola sporulation and conidia germination
title_sort Temperature and light intensity interaction on Cercospora coffeicola sporulation and conidia germination
author Silva, Marília Goulart da
author_facet Silva, Marília Goulart da
Pozza, Edson Ampélio
Lima, Caio Vitor Rodrigues Vaz de
Fernandes, Tales Jesus
author_role author
author2 Pozza, Edson Ampélio
Lima, Caio Vitor Rodrigues Vaz de
Fernandes, Tales Jesus
author2_role author
author
author
dc.contributor.author.fl_str_mv Silva, Marília Goulart da
Pozza, Edson Ampélio
Lima, Caio Vitor Rodrigues Vaz de
Fernandes, Tales Jesus
dc.subject.por.fl_str_mv Environmental variables
Cercospora leaf spot
Esporulação
Germinação
Variáveis ambientais
Mancha de folha de Cercospora
Sporulation
Germination
topic Environmental variables
Cercospora leaf spot
Esporulação
Germinação
Variáveis ambientais
Mancha de folha de Cercospora
Sporulation
Germination
description Difficulty in obtaining abundant sporulation in culture of many species of Cercospora may be the limiting factor for studies of biology, systematics, and inoculation of the genus. Therefore, it is necessary to understand the nutritional and environmental requirements that influence mycelial growth, sporulation and germination. As it is difficult to obtain conidia of Cercospora coffeicola in vitro, different temperatures (17, 22, 27, and 32 °C) and light intensities (80, 160, 240, and 320 μmol m-2 s-1) were evaluated to optimize pathogen sporulation and assess favorable conditions for spore germination, aiming for a strategy of disease control. The dark treatment (0 μmol m-2 s-1) was added for sporulation. A significant interaction was found between temperature and light intensity for both variables. The highest sporulation rate of C. coffeicola occurred at a light intensity of 240 μmol m-2 s-1 and air temperature of 22 °C, reaching 5.9x106 con mL-1. Germination was higher at temperature 17 °C and light intensity of 320 μmol m-2 s-1, reaching 52%. Interaction between light intensity and temperature proved to influence the processes of sporulation and germination of C. coffeicola.
publishDate 2016
dc.date.none.fl_str_mv 2016-03
2018-08-03T18:48:59Z
2018-08-03T18:48:59Z
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 SILVA, M. G. da et al. Temperature and light intensity interaction on Cercospora coffeicola sporulation and conidia germination. Ciência e Agrotecnologia, Lavras, v. 40, n. 2, p. 198-204, Mar./Apr. 2016.
http://repositorio.ufla.br/jspui/handle/1/29896
identifier_str_mv SILVA, M. G. da et al. Temperature and light intensity interaction on Cercospora coffeicola sporulation and conidia germination. Ciência e Agrotecnologia, Lavras, v. 40, n. 2, p. 198-204, Mar./Apr. 2016.
url http://repositorio.ufla.br/jspui/handle/1/29896
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Federal de Lavras
publisher.none.fl_str_mv Universidade Federal de Lavras
dc.source.none.fl_str_mv Ciência e Agrotecnologia
reponame:Repositório Institucional da UFLA
instname:Universidade Federal de Lavras (UFLA)
instacron:UFLA
instname_str Universidade Federal de Lavras (UFLA)
instacron_str UFLA
institution UFLA
reponame_str Repositório Institucional da UFLA
collection Repositório Institucional da UFLA
repository.name.fl_str_mv Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)
repository.mail.fl_str_mv nivaldo@ufla.br || repositorio.biblioteca@ufla.br
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