Land use and seasonal effects on the soil microbiome of a Brazilian dry forest.
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
Texto Completo: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1115430 |
Resumo: | Drylands occupy approximately 41% of the Earth?s terrestrial surface. Climate change and land use practices are expected to affect biogeochemical cycling by the soil microbiome in these ecosystems. Understanding how soil microbial community might respond to these drivers is extremely important to mitigate the processes of land degradation and desertification. The Caatinga, an exclusively Brazilian biome composed of an extensive seasonal tropical dry forest, is exposed to variable spatiotemporal rainfall patterns as well as strong human-driven pressures. Herein, an integrated analysis of shotgun metagenomics approach coupled to meteorological data was employed to unravel the impact of seasonality and land use change on soil microbiome from preserved and agriculture-affected experimental fields in Caatinga drylands. Multivariate analysis suggested that microbial communities of preserved soils under seasonal changes were shaped primarily by water deficit, with a strong increase of Actinobacteria and Proteobacteria members in the dry and rainy seasons, respectively. In contrast, nutrient availability notably played a critical role in driving the microbial community in agriculture-affected soils. The strong enrichment of bacterial genera belonging to the poorly-known phylum Acidobacteria (?Candidatus Solibacter? and ?Candidatus Koribacter?) in soils from dry season affected by ferti-irrigation practices presupposes a contrasting copiotrophic lifestyle and ecological role in mitigating the impact of chemical fertilization. Functional analyses identify overrepresented genes related to osmotic stress response (synthesis of osmoprotectant compounds, accumulation of potassium ions) and preferential carbon and nitrogen utilization when comparing the microbiome of preserved soils under seasonal changes, reflecting differences in the genetic potential for nutrient cycling and C acquisition in the environment. However, the prevalence of nitrosative stress and denitrification functions in irrigation/fertilization-affected soils of the dry season clearly suggest that nutrient input and disruption of natural water regime may impact biogeochemical cycles linked to the microbial processes, with potential impacts on the ecosystem functionality. These findings help to better understand how natural seasonality and agricultural management differentially affect soil microbial ecology from dry forests, providing support for the development of more sustainable land management in dryland ecosystems. |
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Land use and seasonal effects on the soil microbiome of a Brazilian dry forest.Floresta secaBioma CaatingaFloresta seca tropicalComunidades microbianas do soloMetagenômicaSazonalidadeFloresta NativaFlorestaCaatingaSoloUso da TerraFloresta TropicalEcossistemaDry forestsDrylands occupy approximately 41% of the Earth?s terrestrial surface. Climate change and land use practices are expected to affect biogeochemical cycling by the soil microbiome in these ecosystems. Understanding how soil microbial community might respond to these drivers is extremely important to mitigate the processes of land degradation and desertification. The Caatinga, an exclusively Brazilian biome composed of an extensive seasonal tropical dry forest, is exposed to variable spatiotemporal rainfall patterns as well as strong human-driven pressures. Herein, an integrated analysis of shotgun metagenomics approach coupled to meteorological data was employed to unravel the impact of seasonality and land use change on soil microbiome from preserved and agriculture-affected experimental fields in Caatinga drylands. Multivariate analysis suggested that microbial communities of preserved soils under seasonal changes were shaped primarily by water deficit, with a strong increase of Actinobacteria and Proteobacteria members in the dry and rainy seasons, respectively. In contrast, nutrient availability notably played a critical role in driving the microbial community in agriculture-affected soils. The strong enrichment of bacterial genera belonging to the poorly-known phylum Acidobacteria (?Candidatus Solibacter? and ?Candidatus Koribacter?) in soils from dry season affected by ferti-irrigation practices presupposes a contrasting copiotrophic lifestyle and ecological role in mitigating the impact of chemical fertilization. Functional analyses identify overrepresented genes related to osmotic stress response (synthesis of osmoprotectant compounds, accumulation of potassium ions) and preferential carbon and nitrogen utilization when comparing the microbiome of preserved soils under seasonal changes, reflecting differences in the genetic potential for nutrient cycling and C acquisition in the environment. However, the prevalence of nitrosative stress and denitrification functions in irrigation/fertilization-affected soils of the dry season clearly suggest that nutrient input and disruption of natural water regime may impact biogeochemical cycles linked to the microbial processes, with potential impacts on the ecosystem functionality. These findings help to better understand how natural seasonality and agricultural management differentially affect soil microbial ecology from dry forests, providing support for the development of more sustainable land management in dryland ecosystems.GILENO VIEIRA LACERDA JÚNIOR, CPQBA-UNICAMP; MELLINE FONTES NORONHA, CPQBA-UNICAMP; LUCÉLIA CABRAL, CTBE-CNPEM; TIAGO PALLADINO DELFORNO, CPQBA-UNICAMP; SANDERSON TARCISO PEREIRA DE SOUSA, CPQBA-UNICAMP; PAULO IVAN FERNANDES JUNIOR, CPATSA; ITAMAR SOARES DE MELO, CNPMA; VALÉRIA MAIA OLIVEIRA, CPQBA-UNICAMP.LACERDA JÚNIOR, G. V.NORONHA, M. F.CABRAL, L.DELFORNO, T. P.SOUSA, S. T. P. deFERNANDES JUNIOR, P. I.MELO, I. S. deOLIVEIRA. V. M.2019-11-29T00:37:05Z2019-11-29T00:37:05Z2019-11-2820192019-11-29T00:37:05Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleFrontiers in Microbiology, v. 10, abr. 2019. Article 648.1664-302Xhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/111543010.3389/fmicb.2019.00648enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2019-11-29T00:37:12Zoai:www.alice.cnptia.embrapa.br:doc/1115430Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542019-11-29T00:37:12falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542019-11-29T00:37:12Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Land use and seasonal effects on the soil microbiome of a Brazilian dry forest. |
title |
Land use and seasonal effects on the soil microbiome of a Brazilian dry forest. |
spellingShingle |
Land use and seasonal effects on the soil microbiome of a Brazilian dry forest. LACERDA JÚNIOR, G. V. Floresta seca Bioma Caatinga Floresta seca tropical Comunidades microbianas do solo Metagenômica Sazonalidade Floresta Nativa Floresta Caatinga Solo Uso da Terra Floresta Tropical Ecossistema Dry forests |
title_short |
Land use and seasonal effects on the soil microbiome of a Brazilian dry forest. |
title_full |
Land use and seasonal effects on the soil microbiome of a Brazilian dry forest. |
title_fullStr |
Land use and seasonal effects on the soil microbiome of a Brazilian dry forest. |
title_full_unstemmed |
Land use and seasonal effects on the soil microbiome of a Brazilian dry forest. |
title_sort |
Land use and seasonal effects on the soil microbiome of a Brazilian dry forest. |
author |
LACERDA JÚNIOR, G. V. |
author_facet |
LACERDA JÚNIOR, G. V. NORONHA, M. F. CABRAL, L. DELFORNO, T. P. SOUSA, S. T. P. de FERNANDES JUNIOR, P. I. MELO, I. S. de OLIVEIRA. V. M. |
author_role |
author |
author2 |
NORONHA, M. F. CABRAL, L. DELFORNO, T. P. SOUSA, S. T. P. de FERNANDES JUNIOR, P. I. MELO, I. S. de OLIVEIRA. V. M. |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
GILENO VIEIRA LACERDA JÚNIOR, CPQBA-UNICAMP; MELLINE FONTES NORONHA, CPQBA-UNICAMP; LUCÉLIA CABRAL, CTBE-CNPEM; TIAGO PALLADINO DELFORNO, CPQBA-UNICAMP; SANDERSON TARCISO PEREIRA DE SOUSA, CPQBA-UNICAMP; PAULO IVAN FERNANDES JUNIOR, CPATSA; ITAMAR SOARES DE MELO, CNPMA; VALÉRIA MAIA OLIVEIRA, CPQBA-UNICAMP. |
dc.contributor.author.fl_str_mv |
LACERDA JÚNIOR, G. V. NORONHA, M. F. CABRAL, L. DELFORNO, T. P. SOUSA, S. T. P. de FERNANDES JUNIOR, P. I. MELO, I. S. de OLIVEIRA. V. M. |
dc.subject.por.fl_str_mv |
Floresta seca Bioma Caatinga Floresta seca tropical Comunidades microbianas do solo Metagenômica Sazonalidade Floresta Nativa Floresta Caatinga Solo Uso da Terra Floresta Tropical Ecossistema Dry forests |
topic |
Floresta seca Bioma Caatinga Floresta seca tropical Comunidades microbianas do solo Metagenômica Sazonalidade Floresta Nativa Floresta Caatinga Solo Uso da Terra Floresta Tropical Ecossistema Dry forests |
description |
Drylands occupy approximately 41% of the Earth?s terrestrial surface. Climate change and land use practices are expected to affect biogeochemical cycling by the soil microbiome in these ecosystems. Understanding how soil microbial community might respond to these drivers is extremely important to mitigate the processes of land degradation and desertification. The Caatinga, an exclusively Brazilian biome composed of an extensive seasonal tropical dry forest, is exposed to variable spatiotemporal rainfall patterns as well as strong human-driven pressures. Herein, an integrated analysis of shotgun metagenomics approach coupled to meteorological data was employed to unravel the impact of seasonality and land use change on soil microbiome from preserved and agriculture-affected experimental fields in Caatinga drylands. Multivariate analysis suggested that microbial communities of preserved soils under seasonal changes were shaped primarily by water deficit, with a strong increase of Actinobacteria and Proteobacteria members in the dry and rainy seasons, respectively. In contrast, nutrient availability notably played a critical role in driving the microbial community in agriculture-affected soils. The strong enrichment of bacterial genera belonging to the poorly-known phylum Acidobacteria (?Candidatus Solibacter? and ?Candidatus Koribacter?) in soils from dry season affected by ferti-irrigation practices presupposes a contrasting copiotrophic lifestyle and ecological role in mitigating the impact of chemical fertilization. Functional analyses identify overrepresented genes related to osmotic stress response (synthesis of osmoprotectant compounds, accumulation of potassium ions) and preferential carbon and nitrogen utilization when comparing the microbiome of preserved soils under seasonal changes, reflecting differences in the genetic potential for nutrient cycling and C acquisition in the environment. However, the prevalence of nitrosative stress and denitrification functions in irrigation/fertilization-affected soils of the dry season clearly suggest that nutrient input and disruption of natural water regime may impact biogeochemical cycles linked to the microbial processes, with potential impacts on the ecosystem functionality. These findings help to better understand how natural seasonality and agricultural management differentially affect soil microbial ecology from dry forests, providing support for the development of more sustainable land management in dryland ecosystems. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-11-29T00:37:05Z 2019-11-29T00:37:05Z 2019-11-28 2019 2019-11-29T00:37:05Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Frontiers in Microbiology, v. 10, abr. 2019. Article 648. 1664-302X http://www.alice.cnptia.embrapa.br/alice/handle/doc/1115430 10.3389/fmicb.2019.00648 |
identifier_str_mv |
Frontiers in Microbiology, v. 10, abr. 2019. Article 648. 1664-302X 10.3389/fmicb.2019.00648 |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1115430 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
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Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
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Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository.name.fl_str_mv |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
cg-riaa@embrapa.br |
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1794503484571123712 |