Growth promotional traits of three pgpr: possible uses for phytoremediation of degraded soils

Detalhes bibliográficos
Autor(a) principal: Moreira, Helena
Data de Publicação: 2014
Outros Autores: Pereira, Sofia A., Vegas, Alberto L., Rangel, António O. S. S., Castro, Paula M. L., Marques, Ana P. G. C.
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.14/18019
Resumo: Maize is a fast-growing and high yield crop with both energy value and remediation potential. Plant growth promoting rhizobacteria (PGPR) are a biological tool available to enhance plant establishment in degraded or depleted environments such as the case of saline soils or heavy-metal contaminated land. Although PGPR are able to produce metabolites such as siderophores, HCN and ammonia, or solubilize nutrients such as phosphate, these beneficial traits for the plant may be influenced by exposure to excessive levels of such contaminants. In this study, three PGPR (Pseudomonas fluorescens, Ralstonia eutropha and Cryseobacterium humi) were screened for those traits in the presence of different levels of Cd and Zn, and also to different salinization conditions. Their ability to influence maize germination and root and shoot elongation was also analyzed. Results showed that the level of exposure generally affected the ability of the tested strains to produce plant growth promoting substances. However, dissimilar sensibilities in the behavior of the different strains were observed when exposed to similar stress conditions. These differences were also noticeable in the plant development, with the tested PGPR generally positively influencing the analyzed parameters. Results suggest that PGPR can be exploited to promote stress relief of maize when grown in degraded land. Such knowledge may provide a new insight concerning the advantages of such biotechnologically based tools for phytoremediation.
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spelling Growth promotional traits of three pgpr: possible uses for phytoremediation of degraded soilsSoil salinizationMetal contaminated landMaizePlant growth promoting rhizobacteriaMaize is a fast-growing and high yield crop with both energy value and remediation potential. Plant growth promoting rhizobacteria (PGPR) are a biological tool available to enhance plant establishment in degraded or depleted environments such as the case of saline soils or heavy-metal contaminated land. Although PGPR are able to produce metabolites such as siderophores, HCN and ammonia, or solubilize nutrients such as phosphate, these beneficial traits for the plant may be influenced by exposure to excessive levels of such contaminants. In this study, three PGPR (Pseudomonas fluorescens, Ralstonia eutropha and Cryseobacterium humi) were screened for those traits in the presence of different levels of Cd and Zn, and also to different salinization conditions. Their ability to influence maize germination and root and shoot elongation was also analyzed. Results showed that the level of exposure generally affected the ability of the tested strains to produce plant growth promoting substances. However, dissimilar sensibilities in the behavior of the different strains were observed when exposed to similar stress conditions. These differences were also noticeable in the plant development, with the tested PGPR generally positively influencing the analyzed parameters. Results suggest that PGPR can be exploited to promote stress relief of maize when grown in degraded land. Such knowledge may provide a new insight concerning the advantages of such biotechnologically based tools for phytoremediation.Veritati - Repositório Institucional da Universidade Católica PortuguesaMoreira, HelenaPereira, Sofia A.Vegas, Alberto L.Rangel, António O. S. S.Castro, Paula M. L.Marques, Ana P. G. C.2015-07-17T10:09:44Z20142014-01-01T00:00:00Zconference objectinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10400.14/18019engMOREIRA, Helena … [et al.] - Growth promotional traits of three pgpr: possible uses for phytoremediation of degraded soils. International Congress on Phytoremediation of Polluted Soils. Vigo, Espanha, 28 – 29 July, 2014. LAGO, Daniel Arenas; VEGA, Flora Alonso; SEIJO, Andrés Rodríguez (ed.) - PPS International Congress of Phytoremediation of Polluted Soils : Book of Abstract. Vigo, Fisher Scientific, 2014. ISBN 978-84-697-0747-0, 2014. p. 469788469707470info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-09-06T12:14:15Zoai:repositorio.ucp.pt:10400.14/18019Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-09-06T12:14:15Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Growth promotional traits of three pgpr: possible uses for phytoremediation of degraded soils
title Growth promotional traits of three pgpr: possible uses for phytoremediation of degraded soils
spellingShingle Growth promotional traits of three pgpr: possible uses for phytoremediation of degraded soils
Moreira, Helena
Soil salinization
Metal contaminated land
Maize
Plant growth promoting rhizobacteria
title_short Growth promotional traits of three pgpr: possible uses for phytoremediation of degraded soils
title_full Growth promotional traits of three pgpr: possible uses for phytoremediation of degraded soils
title_fullStr Growth promotional traits of three pgpr: possible uses for phytoremediation of degraded soils
title_full_unstemmed Growth promotional traits of three pgpr: possible uses for phytoremediation of degraded soils
title_sort Growth promotional traits of three pgpr: possible uses for phytoremediation of degraded soils
author Moreira, Helena
author_facet Moreira, Helena
Pereira, Sofia A.
Vegas, Alberto L.
Rangel, António O. S. S.
Castro, Paula M. L.
Marques, Ana P. G. C.
author_role author
author2 Pereira, Sofia A.
Vegas, Alberto L.
Rangel, António O. S. S.
Castro, Paula M. L.
Marques, Ana P. G. C.
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Veritati - Repositório Institucional da Universidade Católica Portuguesa
dc.contributor.author.fl_str_mv Moreira, Helena
Pereira, Sofia A.
Vegas, Alberto L.
Rangel, António O. S. S.
Castro, Paula M. L.
Marques, Ana P. G. C.
dc.subject.por.fl_str_mv Soil salinization
Metal contaminated land
Maize
Plant growth promoting rhizobacteria
topic Soil salinization
Metal contaminated land
Maize
Plant growth promoting rhizobacteria
description Maize is a fast-growing and high yield crop with both energy value and remediation potential. Plant growth promoting rhizobacteria (PGPR) are a biological tool available to enhance plant establishment in degraded or depleted environments such as the case of saline soils or heavy-metal contaminated land. Although PGPR are able to produce metabolites such as siderophores, HCN and ammonia, or solubilize nutrients such as phosphate, these beneficial traits for the plant may be influenced by exposure to excessive levels of such contaminants. In this study, three PGPR (Pseudomonas fluorescens, Ralstonia eutropha and Cryseobacterium humi) were screened for those traits in the presence of different levels of Cd and Zn, and also to different salinization conditions. Their ability to influence maize germination and root and shoot elongation was also analyzed. Results showed that the level of exposure generally affected the ability of the tested strains to produce plant growth promoting substances. However, dissimilar sensibilities in the behavior of the different strains were observed when exposed to similar stress conditions. These differences were also noticeable in the plant development, with the tested PGPR generally positively influencing the analyzed parameters. Results suggest that PGPR can be exploited to promote stress relief of maize when grown in degraded land. Such knowledge may provide a new insight concerning the advantages of such biotechnologically based tools for phytoremediation.
publishDate 2014
dc.date.none.fl_str_mv 2014
2014-01-01T00:00:00Z
2015-07-17T10:09:44Z
dc.type.driver.fl_str_mv conference object
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.14/18019
url http://hdl.handle.net/10400.14/18019
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv MOREIRA, Helena … [et al.] - Growth promotional traits of three pgpr: possible uses for phytoremediation of degraded soils. International Congress on Phytoremediation of Polluted Soils. Vigo, Espanha, 28 – 29 July, 2014. LAGO, Daniel Arenas; VEGA, Flora Alonso; SEIJO, Andrés Rodríguez (ed.) - PPS International Congress of Phytoremediation of Polluted Soils : Book of Abstract. Vigo, Fisher Scientific, 2014. ISBN 978-84-697-0747-0, 2014. p. 46
9788469707470
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.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv mluisa.alvim@gmail.com
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