Ph.D. (2016) and Master (2011) in Genetics and Molecular Biology (specialization in Genetics of Microorganisms) from the University of Campinas, Brazil, and a bachelor with honors in Biology (2008) from the Industrial University of Santander, Colombia. Her Master's degree work was awarded the National Petrobras Technology award in 2013. She has been an Associate professor at the Technological Units of Santander (Colombia). Currently, she is a researcher at the Department of Biology of the University of Aveiro and an integrated member of the Centre for Environmental and Marine Studies (CESAM). In addition, she has been invited assistant Professor in the Department of Biology at the University of Aveiro since 2021. Her research interests are environmental microbiology and microbial ecology; mainly focused on understanding microbial communities and interactions through the characterization of taxonomic composition and metabolic diversity in natural or man-made environments, such as associated plant microbiomes, soils, waters, and petroleum fields. My goals are directed at achieving novel strategies for sustainable development, bioremediation, and mitigation of climate change.

Identificação pessoal

Nome completo
Isabel Natalia Sierra García

Nomes de citação

  • García, Isabel Natalia Sierra
  • Garcia, Isabel N. S.

Identificadores de autor

Ciência ID
Google Scholar ID
Researcher Id
Scopus Author Id

Endereços de correio eletrónico

  • inatalia.sierra@ua.pt (Profissional)


Domínios de atuação

  • Ciências Naturais - Ciências Biológicas - Microbiologia


Idioma Conversação Leitura Escrita Compreensão Peer-review
Espanhol; Castelhano (Idioma materno)
Português Utilizador proficiente (C2) Utilizador proficiente (C2) Utilizador proficiente (C2) Utilizador proficiente (C2) Utilizador proficiente (C2)
Inglês Utilizador proficiente (C1) Utilizador proficiente (C1) Utilizador proficiente (C1) Utilizador proficiente (C1) Utilizador proficiente (C1)
Grau Classificação
Genetica e biologia molecular (Doctor)
Universidade Estadual de Campinas, Brasil
"Investigation of the microbiota and processes involved in petroleum degradation in oil reservoirs" (TESE/DISSERTAÇÃO)
Genética e biologia molecular (Master)
Universidade Estadual de Campinas, Brasil
"Structural and functional characterization of hydrocarbon degradation genes from microbial metagenome derived from petroleum reservoirs" (TESE/DISSERTAÇÃO)
Biologia (Bachelor)
Universidad Industrial de Santander, Colômbia
"Determination of the antimicrobial and insecticidal activities in extracts produced by bacteria isolated from soil" (TESE/DISSERTAÇÃO)
Percurso profissional


Categoria Profissional
Instituição de acolhimento
2019/06/17 - Atual Investigador (Investigação) Universidade de Aveiro, Portugal
2017/01/06 - 2017/08/06 Pós-doutorado (Investigação) Universidade Estadual Paulista Júlio de Mesquita Filho, Brasil
Universidade Estadual de Campinas, Brasil

Docência no Ensino Superior

Categoria Profissional
Instituição de acolhimento
2023/02/01 - Atual Professor Auxiliar Convidado (Docente Universitário) Universidade de Aveiro - Departamento de Biologia, Portugal
Universidade de Aveiro - Departamento de Biologia, Portugal
2021/10 - 2022/01 Professor Auxiliar Convidado (Docente Universitário) Universidade de Aveiro, Portugal
Universidade de Aveiro - Departamento de Biologia, Portugal
2021/03 - 2021/07 Professor Auxiliar Convidado (Docente Universitário) Universidade de Aveiro, Portugal
Universidade de Aveiro - Departamento de Biologia, Portugal
2019/01/01 - 2019/06/01 Professor Associado (Docente Universitário) Unidades Tecnológicas de Santander, Colômbia


Designação Financiadores
2011/08 - 2015/08 “Investigation of the microbiota and processes involved in petroleum degradation in oil reservoirs”
S o Paulo Research Foundation, FAPESP (Process No. 2011/14501-6).
Bolseiro de Doutoramento
2014/03 - 2015/03 Crude oil anaerobic biodegradation in microcosms by microbiota from brazilian oil reservoir
Sao Paulo Research Foundation (FAPESP), Process number: 2013/20436-8
Bolseiro de Cientista Convidado
2009/03 - 2011/06 Structural and functional characterization of hydrocarbon degradation genes from microbial metagenome derived from petroleum reservoirs
PETROBRAS (cooperation agreement number 0050.0043275.08.4
Bolseiro de Mestrado


Designação Financiadores
2022/02 - Atual Halotolerant rhizobacteria for enhanced tolerance of Olea europaea to saline stress and infection - Halius
PTDC/BIA- MIC/3157/2020
Investigador Pós-doutorado
2019/06 - 2021/12 RhizoMiS - Redesigning the rhizosphere microbiome of Salicornia for exploitation of bioproducts and improvement of bioprocesses
Investigador Pós-doutorado


Artigo em revista
  1. Isabel N. Sierra-García; Maria J. Ferreira; Adriana Torres-Ballesteros; Antonio Louvado; Newton Gomes; Angela Cunha. "Brevibacterium EB3 inoculation enhances rhizobacterial community interactions leading to improved growth of Salicornia europaea". Applied Soil Ecology (2024): http://dx.doi.org/10.1016/j.apsoil.2024.105306.
  2. Odorico Konrad; Munique Marder; Joice Mörs; Camila Naiele Giovanella Stacke; Guilherme Moraes de Oliveira; Gustavo Stolzenberg Colares; Maira Post Muller; et al. "Digestates from the co-digestion of cattle rumen and manure improve the methane potential of maize silage". Bioresource Technology Reports (2023): http://dx.doi.org/10.1016/j.biteb.2023.101625.
  3. Leandro M. O. Lourenço; Ângela Cunha; Isabel N. Sierra-Garcia. "Light-Driven Tetra- and Octa-ß-substituted Cationic Zinc(II) Phthalocyanines for Eradicating Fusarium oxysporum Conidia". International Journal of Molecular Sciences (2023): https://doi.org/10.3390/ijms242316980.
  4. Maria J Ferreira; I Natalia Sierra-Garcia; António Louvado; Newton C M Gomes; Sandro Figueiredo; Carla Patinha; Diana C G A Pinto; et al. "Domestication shapes the endophytic microbiome and metabolome ofSalicornia europaea". Journal of Applied Microbiology (2023): http://dx.doi.org/10.1093/jambio/lxad178.
  5. Maria J Ferreira; I Natalia Sierra-Garcia; Javier Cremades; Carla António; Ana M Rodrigues; Diana C G A Pinto; Helena Silva; Ângela Cunha. "Biostimulation ofSalicornia europaeaL. crops with plant growth-promoting bacteria in laboratory and field conditions: effects on growth and metabolite profile". Journal of Applied Microbiology 134 3 (2023): http://dx.doi.org/10.1093/jambio/lxad036.
  6. Sara R. D. Gamelas; Isabel N. Sierra-Garcia; Augusto C. Tomé; Ângela Cunha; Leandro M. O. Lourenço. "In Vitro Photoinactivation of Fusarium oxysporum Conidia with Light-Activated Ammonium Phthalocyanines". International Journal of Molecular Sciences (2023): https://doi.org/10.3390/ijms24043922.
  7. Isabel N. Sierra-Garcia; Ângela Cunha; Leandro M.O. Lourenço. "In vitro photodynamic treatment of Fusarium oxysporum conidia through the action of thiopyridinium and methoxypyridinium chlorins". Journal of Photochemistry and Photobiology A: Chemistry 432 (2022): 114081-114081. http://dx.doi.org/10.1016/j.jphotochem.2022.114081.
  8. João Costa; Isabel N. Sierra-Garcia; Angela Cunha. "A Culture-Independent Comparison of Microbial Communities of Two Maturating Craft Beers Styles". Microbiology and Biotechnology Letters 50 3 (2022): 404-413. http://dx.doi.org/10.48022/mbl.2204.04002.
  9. E.B. Górska; W. Stepien; A. Cunha; I.N. Sierra-Garcia; K. Szyszkowska; D. Gozdowski; B. Gworek; et al. "Microbial diversity as an indicator of a diversified cropping system for luvisoils in a moderate climate. Case study – Long term experiments from Poland". Ecological Indicators 141 (2022): 109133-109133. http://dx.doi.org/10.1016/j.ecolind.2022.109133.
  10. Ferreira, Joana R. M.; Sierra-Garcia, Isabel N.; Guieu, Samuel; Silva, Artur M. S.; da Silva, Raquel Nunes; Cunha, Ângela. "Photodynamic control of citrus crop diseases". World Journal of Microbiology and Biotechnology 37 12 (2021): http://dx.doi.org/10.1007/s11274-021-03171-7.
  11. Hidalgo, Kelly J.; Sierra-Garcia, Isabel N.; Zafra, German; de Oliveira, Valéria M.. "Genome-Resolved Meta-Analysis of the Microbiome in Oil Reservoirs Worldwide". Microorganisms 9 9 (2021): 1812. http://dx.doi.org/10.3390/microorganisms9091812.
  12. Garcia, M.; David, B.; Sierra-Garcia, I. N.; Faustino, M. A. F.; Alves, A.; Esteves, A. C.; Cunha, A.. "Photodynamic inactivation of Lasiodiplodia theobromae : lighting the way towards an environmentally friendly phytosanitary treatment". Biology Letters 17 4 (2021): http://dx.doi.org/10.1098/rsbl.2020.0820.
  13. Ferreira, Maria J.; Cunha, Angela; Figueiredo, Sandro; Faustino, Pedro; Patinha, Carla; Silva, Helena; Sierra-Garcia, Isabel N.. "The Root Microbiome of Salicornia ramosissima as a Seedbank for Plant-Growth Promoting Halotolerant Bacteria". Applied Sciences 11 5 (2021): 2233. http://dx.doi.org/10.3390/app11052233.
  14. Hidalgo, Kelly J.; Sierra-Garcia, Isabel N.; Dellagnezze, Bruna M.; de Oliveira, Valéria Maia. "Metagenomic Insights Into the Mechanisms for Biodegradation of Polycyclic Aromatic Hydrocarbons in the Oil Supply Chain". Frontiers in Microbiology 11 (2020): http://dx.doi.org/10.3389/fmicb.2020.561506.
  15. Sierra-Garcia, Isabel Natalia; Belgini, Daiane R.B.; Torres-Ballesteros, Adriana; Paez-Espino, David; Capilla, Ramsés; Santos Neto, Eugenio V.; Gray, Neil; de Oliveira, Valeria Maia. "In depth metagenomic analysis in contrasting oil wells reveals syntrophic bacterial and archaeal associations for oil biodegradation in petroleum reservoirs". Science of The Total Environment 715 (2020): 136646. http://dx.doi.org/10.1016/j.scitotenv.2020.136646.
  16. Borrel, Guillaume; Adam, Panagiotis S.; McKay, Luke J.; Chen, Lin-Xing; Sierra-García, Isabel Natalia; Sieber, Christian M. K.; Letourneur, Quentin; et al. "Wide diversity of methane and short-chain alkane metabolisms in uncultured archaea". Nature Microbiology 4 4 (2019): 603-613. http://dx.doi.org/10.1038/s41564-019-0363-3.
  17. Delforno, T.P.; Lacerda, G.V.; Sierra-Garcia, I.N.; Okada, D.Y.; Macedo, T.Z.; Varesche, M.B.A.; Oliveira, V.M.. "Metagenomic analysis of the microbiome in three different bioreactor configurations applied to commercial laundry wastewater treatment". Science of The Total Environment 587-588 (2017): 389-398. http://dx.doi.org/10.1016/j.scitotenv.2017.02.170.
  18. Vasconcellos, S.P.; Sierra-Garcia, I.N.; Dellagnezze, B.M.; Vicentini, R.; Midgley, D.; Silva, C.C.; Santos Neto, E.V.; et al. "Functional and genetic characterization of hydrocarbon biodegrader and exopolymer-producing clones from a petroleum reservoir metagenomic library". Environmental Technology (United Kingdom) 38 9 (2017): 1139-1150. http://www.scopus.com/inward/record.url?eid=2-s2.0-84984887324&partnerID=MN8TOARS.
  19. Sierra-Garcia, I.N.; Dellagnezze, B.M.; Santos, V.P.; Chaves B, M.R.; Capilla, R.; Santos Neto, E.V.; Gray, N.; Oliveira, V.M.. "Microbial diversity in degraded and non-degraded petroleum samples and comparison across oil reservoirs at local and global scales". Extremophiles 21 1 (2017): 211-229. http://www.scopus.com/inward/record.url?eid=2-s2.0-85000978465&partnerID=MN8TOARS.
  20. Angolini, C.F.F.; Pilau, E.J.; Lopes-Oliveira, P.F.; Garcia, I.N.S.; Gozzo, F.C.; De Oliveira, V.M.; Marsaioli, A.J.; et al. "Classification and identification of petroleum microorganisms by MALDI-TOF mass spectrometry". Journal of the Brazilian Chemical Society 26 3 (2015): 513-520. http://www.scopus.com/inward/record.url?eid=2-s2.0-84923923802&partnerID=MN8TOARS.
  21. Isabel Natalia Sierra-García; Javier Correa Alvarez; Suzan Pantaroto de Vasconcellos; Anete Pereira de Souza; Eugenio Vaz dos Santos Neto; Valéria Maia de Oliveira; Melanie R. Mormile. "New Hydrocarbon Degradation Pathways in the Microbial Metagenome from Brazilian Petroleum Reservoirs". PLoS ONE 9 2 (2014): e90087-e90087. http://dx.doi.org/10.1371/journal.pone.0090087.
  22. da Cruz, G.F.; de Vasconcellos, S.P.; Angolini, C.F.F.; Dellagnezze, B.M.; Garcia, I.N.S.; de Oliveira, V.M.; dos Santos Neto, E.V.; Marsaioli, A.J.. "Could petroleum biodegradation be a joint achievement of aerobic and anaerobic microrganisms in deep sea reservoirs?". AMB Express 1 1 (2011): 1-10. http://www.scopus.com/inward/record.url?eid=2-s2.0-84877015108&partnerID=MN8TOARS.
  23. Vasconcellos, Suzan Pantaroto de; Angolini, Célio Fernando Figueiredo; García, Isabel Natalia Sierra; Martins Dellagnezze, Bruna; Silva, Cynthia Canedo da; Marsaioli, Anita Jocelyne; Neto, Eugenio Vaz dos Santos; de Oliveira, Valéria Maia. "Screening for hydrocarbon biodegraders in a metagenomic clone library derived from Brazilian petroleum reservoirs". Organic Geochemistry 41 7 (2010): 675-681. http://dx.doi.org/10.1016/j.orggeochem.2010.03.014.
Capítulo de livro
  1. Bruna Martins Dellagnezze; Isabel Natalia Sierra-Garcia. "Immobilization of microbial inoculants for improving soil nutrient bioavailability". 2023.
  2. Natalia, Isabel; de Oliveir, Valria Maia. "Microbial Hydrocarbon Degradation: Efforts to Understand Biodegradation in Petroleum Reservoirs". In Biodegradation - Engineering and Technology. InTech, 2013.
Poster em conferência
  1. SIERRA-GARCIA, I. N. "Beneath the olive trees: bacterial communities in the rhizosphere of traditional Portuguese olive cultivars". Trabalho apresentado em Encontro Ciencia 2023, 2023.
  2. SIERRA-GARCIA, I. N. "Plant microbiota of the coastal halophyte Salicornia ramossisima in response to domestication". Trabalho apresentado em International Symposium of Microbial Ecology ISME 18, 2022.
  3. Maria João Ferreira; SIERRA-GARCIA, I. N. Autor correspondente: Maria João Ferreira. "Biomass and metabolome changes in Salicornia ramosissima inoculated with plant growth-promoting bacteria". Trabalho apresentado em International Symposium of Microbial Ecology ISME 18, 2022.
  4. Maria João Ferreira; SIERRA-GARCIA, I. N. Autor correspondente: Maria João Ferreira. "Microbiome-metabolome relations in the halophyte Salicornia ramosissima". Trabalho apresentado em Congreso ISME Latino Americano, ISME-LAT 2021, 2021.


Outra produção
  1. Microbiome Assessment of Global Oil Reservoirs Reveals Site-Specific Hydrocarbon Degradation Functional Profiles. 2021. Kelly J. Hidalgo; Isabel N. Sierra-Garcia; German Zafra; Valéria M. de Oliveira. https://doi.org/10.20944/preprints202108.0092.v1.

Apresentação oral de trabalho

Título da apresentação Nome do evento
Anfitrião (Local do evento)
2023/05/30 Rhizobacterial communities on Portuguese traditional Olea europaea cultivars Cobrançosa and Negrinha do Freixo I Applied Agro Biotecnology International Meeting - New approaches for a qualitative valorization of the olive oil sector
Cebal (Beja, Portugal)
2023/05/08 Interacciones entre microorganismos y plantas: bacterias promotoras de crecimiento Semillero de investigación de la línea de biotecnología de la TecnoAcademia Nodo Vélez
Centro de Gestión Agroempresarial del Oriente, SENA Vélez (Colômbia)
2022/05/27 Microbial ecology of the rhizosphere: halophytes as biological models Advanced Course on Plant-Microbe Interactions under a Scenario of Global Changes
University of Aveiro (aveiro, Portugal)
2021/10 Effect of inoculation with plant-growth promoting bacterial consortia on Salicornia ramosissima root microbiome Coastal Ecology Workshop
2021/09/14 Metagenomic studies of microbial biodegradation in oil reservoirs and their potential for bioremediation Sustainability through biotechnology. Session: Recovery of contaminated environments through biotechnology.
Universidad Tecnologica de Bolivar (Cartagena, Colômbia)
2021/07 Microbiome-metabolome relations in the halophyte Salicornia ramosissima Congreso ISME Latino Americano, ISME-LAT 2021
ISME Latino Americano, ISME-LAT 2021 (Bogotá, Colômbia)
2021/02/04 Plant microbiota of coastal halophyte Salicornia ramosissima Microbiome PT Summit
Calouste Gulkenbian Foundation (Lisboa, Portugal)
2020/11 Microbial diversity in the petroleum supply chain Monitoring of biodiversity with metabarcoding
Alexander von Humboldt Institute (Bogotá, Colômbia)


Título / Tema
Papel desempenhado
Curso (Tipo)
Instituição / Organização
2020 - 2021 Caracterização de comunidades de bactérias endofíticas de Salicornia ramosissima da Ria de Aveiro
Microbiology (Mestrado) (Mestrado)
Universidade de Aveiro, Portugal
2020 - 2021 Use of the Halotolerant Plant Growth-Promoting Rhizobacteria Bacillus aryabhattai in Mitigation of Salt Stress in Three Cultivars of Lettuce, Lactuca sativa.
Biology (Pesquisa Licenciatura) (Outra)
Universidade de Aveiro, Portugal
2020 - 2021 Deteção e diferenciação de bactérias por métodos moleculares: Denaturing gradient gel eletrophoresis (DGGE)
Biologia (Outra)
Universidade de Aveiro - Departamento de Biologia, Portugal

Júri de grau académico

Tipo de participação
Nome do candidato (Tipo de grau)
Instituição / Organização
2023 Análise da água para consumo humano
Matheus Carvalho de Almeida (Outro)
Universidade de Aveiro - Departamento de Biologia, Portugal
2023 Organic Matter and granulometry of plant colonized / non-colonized sediments of Ria de Aveiro salt marshes
Viviana Pereira (Outro)
Universidade de Aveiro, Portugal
2021 Implementação e avaliação de método alternativo TEMPO CAMPYLOBACTER por comparação com método clássico ISO 10272-2-2017
Ana Pascoal (Outro)
Universidade de Aveiro - Departamento de Biologia, Portugal

Arbitragem científica em revista

Nome da revista (ISSN) Editora
2023 - Atual Environmental Microbiology (1462-2912)
2023 - Atual Trends in Ecology and Evolution (1872-8383)
2022 - Atual The ISME Journal (1751-7370 )
2021 - Atual Genes (2073-4425)
2021 - Atual Microbial Ecology (1432-184X)
2021 - Atual Pedosphere (1002-0160)
2017 - Atual Brazilian journal of microbiology (1678-4405)
2017 - Atual Energy & Fuels (08870624, 15205029)
2017 - Atual Journal of Bioscience and Bioengineering (13474421, 13891723)
2016 - Atual Marine Genomics (18747787, 18767478)


2013 Prêmio Petrobras de Tecnologia Engenheiro Antonio Seabra Moggi - 6a edição
Petrobras, Brasil


Universidad Industrial de Santander, Colômbia