Beneficial microorganisms in growth promotion and stress tolerance in petunia plugs

Detalhes bibliográficos
Autor(a) principal: Nascimento, Ângela Maria Pereira do
Data de Publicação: 2017
Tipo de documento: Tese
Idioma: por
Título da fonte: Repositório Institucional da UFLA
Texto Completo: http://repositorio.ufla.br/jspui/handle/1/28255
Resumo: Petunia is a specie usually propagated by plugs, being used commercially in pots and flowerbeds, presenting variety of colors and abundant flowering. To improve plugs production, the use of plant growth promoting bacteria (PGPR) can improve growth and resistance to plants. With this purpose, we highlight the bacteria of genus Pseudomonas spp., specially the auxin and ACC deaminase producers for growth promotion and reducing stress symptoms caused by ethylene. Thus, the objective was to identify and evaluate the use of strains of Pseudomonas spp. in growth promotion and water stress in petunias plugs. Strains of Pseudomonas spp. were selected for the detection of ACC deaminase activity, identification of the best application time and effect of the application of these bacteria in growth promotion and resistance under water stress conditions. Greater activity of ACC deaminase was observed for P. putida UW4 +, P. poae 29G9 and P. brassicacearum Delaware. The spraying of the solutions containing these bacteria applied at sowing and third day after sowing promoted greater development of shoots and root system of the plugs. Among the studied strains, no resistance promoting effect was observed for plants submitted to stress in plugs stage. However, the use of Pseudomonas strains contributed to the development of plugs, accelerating flowering and producing more flowers in plants that were not submitted to stress in the plugs stage.
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spelling Beneficial microorganisms in growth promotion and stress tolerance in petunia plugsFloriculturaPropagaçãoMicrorganismosPseudomonas spp.Bactérias promotoras de crescimentoPlantas ornamentaisEstresse hídricoPropagationPlant growth promoting bacteriaOrnamental plantsWater stressFitotecniaPetunia is a specie usually propagated by plugs, being used commercially in pots and flowerbeds, presenting variety of colors and abundant flowering. To improve plugs production, the use of plant growth promoting bacteria (PGPR) can improve growth and resistance to plants. With this purpose, we highlight the bacteria of genus Pseudomonas spp., specially the auxin and ACC deaminase producers for growth promotion and reducing stress symptoms caused by ethylene. Thus, the objective was to identify and evaluate the use of strains of Pseudomonas spp. in growth promotion and water stress in petunias plugs. Strains of Pseudomonas spp. were selected for the detection of ACC deaminase activity, identification of the best application time and effect of the application of these bacteria in growth promotion and resistance under water stress conditions. Greater activity of ACC deaminase was observed for P. putida UW4 +, P. poae 29G9 and P. brassicacearum Delaware. The spraying of the solutions containing these bacteria applied at sowing and third day after sowing promoted greater development of shoots and root system of the plugs. Among the studied strains, no resistance promoting effect was observed for plants submitted to stress in plugs stage. However, the use of Pseudomonas strains contributed to the development of plugs, accelerating flowering and producing more flowers in plants that were not submitted to stress in the plugs stage.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)A petúnia é uma espécie comumente propagada por plugs, sendo utilizada comercialmente em vasos e canteiros, apresentando variedade de cores e floração abundante. Como forma de aprimorar a produção de plugs, o uso de bactérias promotoras de crescimento de plantas, pode proporcionar melhor crescimento e resistência a elas. Com essa finalidade, se destacam as bactérias do gênero Pseudomonas spp., em especial as produtoras de auxinas e ACC deaminase, por promoverem o crescimento e reduzir sintomas de estresse causados pelo etileno. Dessa forma, objetivou-se identificar e avaliar a utilização de estirpes de Pseudomonas spp. na promoção de crescimento e resistência a estresse hídrico em plugs de petúnias. Estirpes de Pseudomonas spp. foram selecionadas para detecção de atividade de ACC deaminase, identificação da melhor época de aplicação, e efeito da aplicação desses microrganismos na promoção de crescimento e indução de resistência das mudas em condições de estresse hídrico. Maior atividade de ACC deaminase foi observada para P. putida UW4+, P. poae 29G9 e P. brassicacearum Delaware. A pulverização das soluções contendo essas bactérias aplicadas no plantio, e no terceiro dia após semeadura, promoveu maior desenvolvimento da parte aérea e do sistema radicular dos plugs. Dentre as estirpes estudadas, não foi observado efeito de promoção de resistência para plantas submetidas a estresse no estágio de plugs. Porém, o uso das estirpes de Pseudomonas contribuiu para o desenvolvimento das plantas no estágio de plugs, acelerando a floração e promovendo a formação de maior número de flores em plantas que não foram submetidas a estresse no estágio de plugs.Universidade Federal de LavrasPrograma de Pós-Graduação em Agronomia/FitotecniaUFLAbrasilDepartamento de AgriculturaPaiva, Patrícia Duarte de OliveiraReis, Simone NovaesCarvalho, Lívia MendesBorém, Rosângela Alves TristãoPio, Leila Aparecida SallesNascimento, Ângela Maria Pereira do2017-12-14T11:36:13Z2017-12-14T11:36:13Z2017-12-142017-09-06info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisapplication/pdfNASCIMENTO, A. M. P. do. Beneficial microorganisms in growth promotion and stress tolerance in petunia plugs. 2017. 55 p. Tese (Doutorado em Agronomia/Fitotecnia) – Universidade Federal de Lavras, Lavras, 2017.http://repositorio.ufla.br/jspui/handle/1/28255porinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLA2019-01-22T16:02:10Zoai:localhost:1/28255Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2019-01-22T16:02:10Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv Beneficial microorganisms in growth promotion and stress tolerance in petunia plugs
title Beneficial microorganisms in growth promotion and stress tolerance in petunia plugs
spellingShingle Beneficial microorganisms in growth promotion and stress tolerance in petunia plugs
Nascimento, Ângela Maria Pereira do
Floricultura
Propagação
Microrganismos
Pseudomonas spp.
Bactérias promotoras de crescimento
Plantas ornamentais
Estresse hídrico
Propagation
Plant growth promoting bacteria
Ornamental plants
Water stress
Fitotecnia
title_short Beneficial microorganisms in growth promotion and stress tolerance in petunia plugs
title_full Beneficial microorganisms in growth promotion and stress tolerance in petunia plugs
title_fullStr Beneficial microorganisms in growth promotion and stress tolerance in petunia plugs
title_full_unstemmed Beneficial microorganisms in growth promotion and stress tolerance in petunia plugs
title_sort Beneficial microorganisms in growth promotion and stress tolerance in petunia plugs
author Nascimento, Ângela Maria Pereira do
author_facet Nascimento, Ângela Maria Pereira do
author_role author
dc.contributor.none.fl_str_mv Paiva, Patrícia Duarte de Oliveira
Reis, Simone Novaes
Carvalho, Lívia Mendes
Borém, Rosângela Alves Tristão
Pio, Leila Aparecida Salles
dc.contributor.author.fl_str_mv Nascimento, Ângela Maria Pereira do
dc.subject.por.fl_str_mv Floricultura
Propagação
Microrganismos
Pseudomonas spp.
Bactérias promotoras de crescimento
Plantas ornamentais
Estresse hídrico
Propagation
Plant growth promoting bacteria
Ornamental plants
Water stress
Fitotecnia
topic Floricultura
Propagação
Microrganismos
Pseudomonas spp.
Bactérias promotoras de crescimento
Plantas ornamentais
Estresse hídrico
Propagation
Plant growth promoting bacteria
Ornamental plants
Water stress
Fitotecnia
description Petunia is a specie usually propagated by plugs, being used commercially in pots and flowerbeds, presenting variety of colors and abundant flowering. To improve plugs production, the use of plant growth promoting bacteria (PGPR) can improve growth and resistance to plants. With this purpose, we highlight the bacteria of genus Pseudomonas spp., specially the auxin and ACC deaminase producers for growth promotion and reducing stress symptoms caused by ethylene. Thus, the objective was to identify and evaluate the use of strains of Pseudomonas spp. in growth promotion and water stress in petunias plugs. Strains of Pseudomonas spp. were selected for the detection of ACC deaminase activity, identification of the best application time and effect of the application of these bacteria in growth promotion and resistance under water stress conditions. Greater activity of ACC deaminase was observed for P. putida UW4 +, P. poae 29G9 and P. brassicacearum Delaware. The spraying of the solutions containing these bacteria applied at sowing and third day after sowing promoted greater development of shoots and root system of the plugs. Among the studied strains, no resistance promoting effect was observed for plants submitted to stress in plugs stage. However, the use of Pseudomonas strains contributed to the development of plugs, accelerating flowering and producing more flowers in plants that were not submitted to stress in the plugs stage.
publishDate 2017
dc.date.none.fl_str_mv 2017-12-14T11:36:13Z
2017-12-14T11:36:13Z
2017-12-14
2017-09-06
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/doctoralThesis
format doctoralThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv NASCIMENTO, A. M. P. do. Beneficial microorganisms in growth promotion and stress tolerance in petunia plugs. 2017. 55 p. Tese (Doutorado em Agronomia/Fitotecnia) – Universidade Federal de Lavras, Lavras, 2017.
http://repositorio.ufla.br/jspui/handle/1/28255
identifier_str_mv NASCIMENTO, A. M. P. do. Beneficial microorganisms in growth promotion and stress tolerance in petunia plugs. 2017. 55 p. Tese (Doutorado em Agronomia/Fitotecnia) – Universidade Federal de Lavras, Lavras, 2017.
url http://repositorio.ufla.br/jspui/handle/1/28255
dc.language.iso.fl_str_mv por
language por
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Federal de Lavras
Programa de Pós-Graduação em Agronomia/Fitotecnia
UFLA
brasil
Departamento de Agricultura
publisher.none.fl_str_mv Universidade Federal de Lavras
Programa de Pós-Graduação em Agronomia/Fitotecnia
UFLA
brasil
Departamento de Agricultura
dc.source.none.fl_str_mv 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
_version_ 1807835071778914304

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