Combined Effect of Laboratory-Simulated Fire and Chromium Pollution on Microbial Communities in an Agricultural Soil
Fire events in agricultural soils can modify not only soil properties but also the structure of soil microbial communities, especially in soils containing high concentrations of potentially toxic elements (PTEs). The recolonization of burned soils can in fact favor the proliferation of certain micro...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-06-01
|
| Series: | Biology |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-7737/10/7/587 |
| _version_ | 1797528657079566336 |
|---|---|
| author | Ida Rascio Maddalena Curci Concetta Eliana Gattullo Anna Lavecchia Mohammad Yaghoubi Khanghahi Roberto Terzano Carmine Crecchio |
| author_facet | Ida Rascio Maddalena Curci Concetta Eliana Gattullo Anna Lavecchia Mohammad Yaghoubi Khanghahi Roberto Terzano Carmine Crecchio |
| author_sort | Ida Rascio |
| collection | DOAJ |
| description | Fire events in agricultural soils can modify not only soil properties but also the structure of soil microbial communities, especially in soils containing high concentrations of potentially toxic elements (PTEs). The recolonization of burned soils can in fact favor the proliferation of certain microorganisms, more adaptable to post-fire soil conditions and higher PTE availability, over others. In this study, we simulated with laboratory experiments the microbial recolonization of an agricultural soil containing high Cr concentrations after heating at 500 °C for 30 min, to mimic the burning of crop residues. Changes in soil properties and Cr speciation were assessed, as well as soil microbial structure by means of 16S rRNA gene sequencing. Both altered soil conditions and increased Cr availability, especially Cr(VI), appeared to be responsible for the reduction in species diversity in heated soils and the proliferation of Firmicutes. Indeed, already after 3 days from the heat treatment, Firmicutes increased from 14% to 60% relative abundance. In particular, <i>Paenibacillus</i> was the most abundant genus identified after the simulation, with an average relative abundance of 40%. These bacteria are known to be good fire-responders and Cr-tolerant. These results could be useful to identify bacterial strains to be used as bioindicators of altered environments and for the recovery of fire-impacted polluted sites. |
| first_indexed | 2024-03-10T10:01:26Z |
| format | Article |
| id | doaj.art-351900ae883d4c12886687c28610a67d |
| institution | Directory Open Access Journal |
| issn | 2079-7737 |
| language | English |
| last_indexed | 2024-03-10T10:01:26Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Biology |
| spelling | doaj.art-351900ae883d4c12886687c28610a67d2023-11-22T01:52:24ZengMDPI AGBiology2079-77372021-06-0110758710.3390/biology10070587Combined Effect of Laboratory-Simulated Fire and Chromium Pollution on Microbial Communities in an Agricultural SoilIda Rascio0Maddalena Curci1Concetta Eliana Gattullo2Anna Lavecchia3Mohammad Yaghoubi Khanghahi4Roberto Terzano5Carmine Crecchio6Dipartimento di Scienze del Suolo della Pianta e degli Alimenti (Di.S.S.P.A), Università degli studi di Bari “Aldo Moro”, Via G. Amendola 165/A, I-70126 Bari, ItalyDipartimento di Scienze del Suolo della Pianta e degli Alimenti (Di.S.S.P.A), Università degli studi di Bari “Aldo Moro”, Via G. Amendola 165/A, I-70126 Bari, ItalyDipartimento di Scienze del Suolo della Pianta e degli Alimenti (Di.S.S.P.A), Università degli studi di Bari “Aldo Moro”, Via G. Amendola 165/A, I-70126 Bari, ItalyDipartimento di Bioscienze, Biotecnologie e Biofarmaceutica, Università degli studi di Bari “Aldo Moro”, Via Orabona, I-70126 Bari, ItalyDipartimento di Scienze del Suolo della Pianta e degli Alimenti (Di.S.S.P.A), Università degli studi di Bari “Aldo Moro”, Via G. Amendola 165/A, I-70126 Bari, ItalyDipartimento di Scienze del Suolo della Pianta e degli Alimenti (Di.S.S.P.A), Università degli studi di Bari “Aldo Moro”, Via G. Amendola 165/A, I-70126 Bari, ItalyDipartimento di Scienze del Suolo della Pianta e degli Alimenti (Di.S.S.P.A), Università degli studi di Bari “Aldo Moro”, Via G. Amendola 165/A, I-70126 Bari, ItalyFire events in agricultural soils can modify not only soil properties but also the structure of soil microbial communities, especially in soils containing high concentrations of potentially toxic elements (PTEs). The recolonization of burned soils can in fact favor the proliferation of certain microorganisms, more adaptable to post-fire soil conditions and higher PTE availability, over others. In this study, we simulated with laboratory experiments the microbial recolonization of an agricultural soil containing high Cr concentrations after heating at 500 °C for 30 min, to mimic the burning of crop residues. Changes in soil properties and Cr speciation were assessed, as well as soil microbial structure by means of 16S rRNA gene sequencing. Both altered soil conditions and increased Cr availability, especially Cr(VI), appeared to be responsible for the reduction in species diversity in heated soils and the proliferation of Firmicutes. Indeed, already after 3 days from the heat treatment, Firmicutes increased from 14% to 60% relative abundance. In particular, <i>Paenibacillus</i> was the most abundant genus identified after the simulation, with an average relative abundance of 40%. These bacteria are known to be good fire-responders and Cr-tolerant. These results could be useful to identify bacterial strains to be used as bioindicators of altered environments and for the recovery of fire-impacted polluted sites.https://www.mdpi.com/2079-7737/10/7/587Firmicutes<i>Paenibacillus</i>hexavalent chromiumsoil degradationsoil restoration16S rRNA sequencing |
| spellingShingle | Ida Rascio Maddalena Curci Concetta Eliana Gattullo Anna Lavecchia Mohammad Yaghoubi Khanghahi Roberto Terzano Carmine Crecchio Combined Effect of Laboratory-Simulated Fire and Chromium Pollution on Microbial Communities in an Agricultural Soil Biology Firmicutes <i>Paenibacillus</i> hexavalent chromium soil degradation soil restoration 16S rRNA sequencing |
| title | Combined Effect of Laboratory-Simulated Fire and Chromium Pollution on Microbial Communities in an Agricultural Soil |
| title_full | Combined Effect of Laboratory-Simulated Fire and Chromium Pollution on Microbial Communities in an Agricultural Soil |
| title_fullStr | Combined Effect of Laboratory-Simulated Fire and Chromium Pollution on Microbial Communities in an Agricultural Soil |
| title_full_unstemmed | Combined Effect of Laboratory-Simulated Fire and Chromium Pollution on Microbial Communities in an Agricultural Soil |
| title_short | Combined Effect of Laboratory-Simulated Fire and Chromium Pollution on Microbial Communities in an Agricultural Soil |
| title_sort | combined effect of laboratory simulated fire and chromium pollution on microbial communities in an agricultural soil |
| topic | Firmicutes <i>Paenibacillus</i> hexavalent chromium soil degradation soil restoration 16S rRNA sequencing |
| url | https://www.mdpi.com/2079-7737/10/7/587 |
| work_keys_str_mv | AT idarascio combinedeffectoflaboratorysimulatedfireandchromiumpollutiononmicrobialcommunitiesinanagriculturalsoil AT maddalenacurci combinedeffectoflaboratorysimulatedfireandchromiumpollutiononmicrobialcommunitiesinanagriculturalsoil AT concettaelianagattullo combinedeffectoflaboratorysimulatedfireandchromiumpollutiononmicrobialcommunitiesinanagriculturalsoil AT annalavecchia combinedeffectoflaboratorysimulatedfireandchromiumpollutiononmicrobialcommunitiesinanagriculturalsoil AT mohammadyaghoubikhanghahi combinedeffectoflaboratorysimulatedfireandchromiumpollutiononmicrobialcommunitiesinanagriculturalsoil AT robertoterzano combinedeffectoflaboratorysimulatedfireandchromiumpollutiononmicrobialcommunitiesinanagriculturalsoil AT carminecrecchio combinedeffectoflaboratorysimulatedfireandchromiumpollutiononmicrobialcommunitiesinanagriculturalsoil |