Growth promotional traits of three pgpr: possible uses for phytoremediation of degraded soils
Autor(a) principal: | |
---|---|
Data de Publicação: | 2014 |
Outros Autores: | , , , , |
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. |
id |
RCAP_fdfcd5e921c3de55da27402f3828a1bc |
---|---|
oai_identifier_str |
oai:repositorio.ucp.pt:10400.14/18019 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
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 |
_version_ |
1817546825301753856 |