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Bacterial Succession during Vermicomposting of Silver Wattle (Acacia dealbata Link)

Vermicomposting is the process of organic waste degradation through interactions between earthworms and microbes. A variety of organic wastes can be vermicomposted, producing a nutrient-rich final product that can be used as a soil biofertilizer. Giving the prolific invasive nature of the Australian...

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Autores principales: Rosado, Daniela, Pérez-Losada, Marcos, Aira, Manuel, Domínguez, Jorge
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8780150/
https://www.ncbi.nlm.nih.gov/pubmed/35056514
http://dx.doi.org/10.3390/microorganisms10010065
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author Rosado, Daniela
Pérez-Losada, Marcos
Aira, Manuel
Domínguez, Jorge
author_facet Rosado, Daniela
Pérez-Losada, Marcos
Aira, Manuel
Domínguez, Jorge
author_sort Rosado, Daniela
collection PubMed
description Vermicomposting is the process of organic waste degradation through interactions between earthworms and microbes. A variety of organic wastes can be vermicomposted, producing a nutrient-rich final product that can be used as a soil biofertilizer. Giving the prolific invasive nature of the Australian silver wattle Acacia dealbata Link in Europe, it is important to find alternatives for its sustainable use. However, optimization of vermicomposting needs further comprehension of the fundamental microbial processes. Here, we characterized bacterial succession during the vermicomposting of silver wattle during 56 days using the earthworm species Eisenia andrei. We observed significant differences in α- and β-diversity between fresh silver wattle (day 0) and days 14 and 28, while the bacterial community seemed more stable between days 28 and 56. Accordingly, during the first 28 days, a higher number of taxa experienced significant changes in relative abundance. A microbiome core composed of 10 amplicon sequence variants was identified during the vermicomposting of silver wattle (days 14 to 56). Finally, predicted functional profiles of genes involved in cellulose metabolism, nitrification, and salicylic acid also changed significantly during vermicomposting. This study, hence, provides detailed insights of the bacterial succession occurring during vermicomposting of the silver wattle and the characteristics of its final product as a sustainable plant biofertilizer.
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spelling pubmed-87801502022-01-22 Bacterial Succession during Vermicomposting of Silver Wattle (Acacia dealbata Link) Rosado, Daniela Pérez-Losada, Marcos Aira, Manuel Domínguez, Jorge Microorganisms Article Vermicomposting is the process of organic waste degradation through interactions between earthworms and microbes. A variety of organic wastes can be vermicomposted, producing a nutrient-rich final product that can be used as a soil biofertilizer. Giving the prolific invasive nature of the Australian silver wattle Acacia dealbata Link in Europe, it is important to find alternatives for its sustainable use. However, optimization of vermicomposting needs further comprehension of the fundamental microbial processes. Here, we characterized bacterial succession during the vermicomposting of silver wattle during 56 days using the earthworm species Eisenia andrei. We observed significant differences in α- and β-diversity between fresh silver wattle (day 0) and days 14 and 28, while the bacterial community seemed more stable between days 28 and 56. Accordingly, during the first 28 days, a higher number of taxa experienced significant changes in relative abundance. A microbiome core composed of 10 amplicon sequence variants was identified during the vermicomposting of silver wattle (days 14 to 56). Finally, predicted functional profiles of genes involved in cellulose metabolism, nitrification, and salicylic acid also changed significantly during vermicomposting. This study, hence, provides detailed insights of the bacterial succession occurring during vermicomposting of the silver wattle and the characteristics of its final product as a sustainable plant biofertilizer. MDPI 2021-12-29 /pmc/articles/PMC8780150/ /pubmed/35056514 http://dx.doi.org/10.3390/microorganisms10010065 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Rosado, Daniela
Pérez-Losada, Marcos
Aira, Manuel
Domínguez, Jorge
Bacterial Succession during Vermicomposting of Silver Wattle (Acacia dealbata Link)
title Bacterial Succession during Vermicomposting of Silver Wattle (Acacia dealbata Link)
title_full Bacterial Succession during Vermicomposting of Silver Wattle (Acacia dealbata Link)
title_fullStr Bacterial Succession during Vermicomposting of Silver Wattle (Acacia dealbata Link)
title_full_unstemmed Bacterial Succession during Vermicomposting of Silver Wattle (Acacia dealbata Link)
title_short Bacterial Succession during Vermicomposting of Silver Wattle (Acacia dealbata Link)
title_sort bacterial succession during vermicomposting of silver wattle (acacia dealbata link)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8780150/
https://www.ncbi.nlm.nih.gov/pubmed/35056514
http://dx.doi.org/10.3390/microorganisms10010065
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