Application of maize and efficient rhizospheric microorganisms for the remediation of saline soils

Detalhes bibliográficos
Autor(a) principal: Moreira, Helena
Data de Publicação: 2014
Outros Autores: Pereira, Sofia A., Vega, Alberto L., 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/10400.14/18018
Resumo: Soil salinity is a serious problem causing loss of fertility, as plants facing salt stress suffer alterations in physiology that adversely affects its growth. This work aimed to evaluate the effectiveness of combinations of microorganisms for the recovery of crop productivity in soils affected by different levels of salinity (0, 2.5 and 5 gNaCl.kg-1). The strategy relied on the culture in greenhouse conditions of a high value food and energetic crop (maize) inoculated with soil plant growth promoting microbiota – an arbuscular mychorrizal fungi (Rhizophagus irregularis), a rhizobacteria (Pseudomonas reactans) and a bacterial endophyte (Pantoea ananatis). Plant biomass was assessed at harvest and differences between treatments were analysed. As the work also aimed to relate the effects of bioinoculation to alterations in plant response to salt stress, further parameters were assessed. Elevated salt levels induce ionic stress, with consequent nutrient imbalance; therefore, levels of Na, K and Ca were determined in plant tissues. As salt is also a major stress to soil organisms, rhizosphere samples were analysed to follow up of microbiota survival by molecular biology techniques (DGGE), assessing the effect of soil salinity at the different tested levels on the inoculated soil microorganisms persistence and relationship with the existing community. The collected information allowed understanding the effects of the applied biologically based treatments in the quality of the tested saline soils, on the dynamics of the present microbiota and on maize growth, focusing on the further development of cropping strategies for saline soils, grounded on sustainable agriculture practices.
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spelling Application of maize and efficient rhizospheric microorganisms for the remediation of saline soilsSalinizationMaizeArbuscular mychorrizal fungiPlant growth promoting endophitic bacteriaSoil salinity is a serious problem causing loss of fertility, as plants facing salt stress suffer alterations in physiology that adversely affects its growth. This work aimed to evaluate the effectiveness of combinations of microorganisms for the recovery of crop productivity in soils affected by different levels of salinity (0, 2.5 and 5 gNaCl.kg-1). The strategy relied on the culture in greenhouse conditions of a high value food and energetic crop (maize) inoculated with soil plant growth promoting microbiota – an arbuscular mychorrizal fungi (Rhizophagus irregularis), a rhizobacteria (Pseudomonas reactans) and a bacterial endophyte (Pantoea ananatis). Plant biomass was assessed at harvest and differences between treatments were analysed. As the work also aimed to relate the effects of bioinoculation to alterations in plant response to salt stress, further parameters were assessed. Elevated salt levels induce ionic stress, with consequent nutrient imbalance; therefore, levels of Na, K and Ca were determined in plant tissues. As salt is also a major stress to soil organisms, rhizosphere samples were analysed to follow up of microbiota survival by molecular biology techniques (DGGE), assessing the effect of soil salinity at the different tested levels on the inoculated soil microorganisms persistence and relationship with the existing community. The collected information allowed understanding the effects of the applied biologically based treatments in the quality of the tested saline soils, on the dynamics of the present microbiota and on maize growth, focusing on the further development of cropping strategies for saline soils, grounded on sustainable agriculture practices.Veritati - Repositório Institucional da Universidade Católica PortuguesaMoreira, HelenaPereira, Sofia A.Vega, Alberto L.Castro, Paula M. L.Marques, Ana P. G. C.2015-07-17T10:07:47Z20142014-01-01T00:00:00Zconference objectinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10400.14/18018engMOREIRA, Helena… [et al.] - Application of maize and efficient rhizospheric microorganisms for the remediation of saline soils. In 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. p. 109info: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:10400.14/18018Portal 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 Application of maize and efficient rhizospheric microorganisms for the remediation of saline soils
title Application of maize and efficient rhizospheric microorganisms for the remediation of saline soils
spellingShingle Application of maize and efficient rhizospheric microorganisms for the remediation of saline soils
Moreira, Helena
Salinization
Maize
Arbuscular mychorrizal fungi
Plant growth promoting endophitic bacteria
title_short Application of maize and efficient rhizospheric microorganisms for the remediation of saline soils
title_full Application of maize and efficient rhizospheric microorganisms for the remediation of saline soils
title_fullStr Application of maize and efficient rhizospheric microorganisms for the remediation of saline soils
title_full_unstemmed Application of maize and efficient rhizospheric microorganisms for the remediation of saline soils
title_sort Application of maize and efficient rhizospheric microorganisms for the remediation of saline soils
author Moreira, Helena
author_facet Moreira, Helena
Pereira, Sofia A.
Vega, Alberto L.
Castro, Paula M. L.
Marques, Ana P. G. C.
author_role author
author2 Pereira, Sofia A.
Vega, Alberto L.
Castro, Paula M. L.
Marques, Ana P. G. C.
author2_role 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.
Vega, Alberto L.
Castro, Paula M. L.
Marques, Ana P. G. C.
dc.subject.por.fl_str_mv Salinization
Maize
Arbuscular mychorrizal fungi
Plant growth promoting endophitic bacteria
topic Salinization
Maize
Arbuscular mychorrizal fungi
Plant growth promoting endophitic bacteria
description Soil salinity is a serious problem causing loss of fertility, as plants facing salt stress suffer alterations in physiology that adversely affects its growth. This work aimed to evaluate the effectiveness of combinations of microorganisms for the recovery of crop productivity in soils affected by different levels of salinity (0, 2.5 and 5 gNaCl.kg-1). The strategy relied on the culture in greenhouse conditions of a high value food and energetic crop (maize) inoculated with soil plant growth promoting microbiota – an arbuscular mychorrizal fungi (Rhizophagus irregularis), a rhizobacteria (Pseudomonas reactans) and a bacterial endophyte (Pantoea ananatis). Plant biomass was assessed at harvest and differences between treatments were analysed. As the work also aimed to relate the effects of bioinoculation to alterations in plant response to salt stress, further parameters were assessed. Elevated salt levels induce ionic stress, with consequent nutrient imbalance; therefore, levels of Na, K and Ca were determined in plant tissues. As salt is also a major stress to soil organisms, rhizosphere samples were analysed to follow up of microbiota survival by molecular biology techniques (DGGE), assessing the effect of soil salinity at the different tested levels on the inoculated soil microorganisms persistence and relationship with the existing community. The collected information allowed understanding the effects of the applied biologically based treatments in the quality of the tested saline soils, on the dynamics of the present microbiota and on maize growth, focusing on the further development of cropping strategies for saline soils, grounded on sustainable agriculture practices.
publishDate 2014
dc.date.none.fl_str_mv 2014
2014-01-01T00:00:00Z
2015-07-17T10:07:47Z
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/10400.14/18018
url http://hdl.handle.net/10400.14/18018
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv MOREIRA, Helena… [et al.] - Application of maize and efficient rhizospheric microorganisms for the remediation of saline soils. In 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. p. 109
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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