Taxonomic and Functional Dynamics of Bacterial Communities During Drift Seaweed Vermicomposting

Seaweed is a valuable natural resource, but drift or beach-cast seaweed is considered a waste product. Although seaweed is traditionally used as an organic amendment, vermicomposting has the potential to transform the material into valuable organic fertilizer, thereby enhancing its microbial propert...

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Main Authors: Manuel Aira, Ana Gómez-Roel, Jorge Domínguez
Format: Article
Language:English
Published: MDPI AG 2024-12-01
Series:Microorganisms
Subjects:
Online Access:https://www.mdpi.com/2076-2607/13/1/30
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author Manuel Aira
Ana Gómez-Roel
Jorge Domínguez
author_facet Manuel Aira
Ana Gómez-Roel
Jorge Domínguez
author_sort Manuel Aira
collection DOAJ
description Seaweed is a valuable natural resource, but drift or beach-cast seaweed is considered a waste product. Although seaweed is traditionally used as an organic amendment, vermicomposting has the potential to transform the material into valuable organic fertilizer, thereby enhancing its microbial properties. This study aimed to investigate the dynamics of the taxonomic and functional bacterial communities in seaweed during the vermicomposting process by high-throughput sequencing of 16S rRNA gene amplicons. Vermicomposting changed the composition of the bacterial communities, as indicated by the low proportion of bacterial taxa common to the bacterial communities in the raw seaweed and vermicompost (21 to 56 ASVs from more than 900 ASVs per sample type). The observed increase in taxonomic diversity (32% mean increase across sampling times) also affected the functionality of the bacterial communities present in the vermicompost. The diverse bacterial community showed enriched functional pathways related to soil health and plant growth, including the synthesis of antibiotics, amino acids, and phytohormones, as well as the degradation of bisphenol. In conclusion, in terms of microbial load and diversity, vermicompost derived from seaweed is a more valuable organic fertiliser than seaweed itself.
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institution Kabale University
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series Microorganisms
spelling doaj-art-e65f5a6bebfc4ed486379651f1210b892025-01-24T13:42:21ZengMDPI AGMicroorganisms2076-26072024-12-011313010.3390/microorganisms13010030Taxonomic and Functional Dynamics of Bacterial Communities During Drift Seaweed VermicompostingManuel Aira0Ana Gómez-Roel1Jorge Domínguez2Grupo de Ecoloxía Animal (GEA), Universidade de Vigo, E-36310 Vigo, SpainGrupo de Ecoloxía Animal (GEA), Universidade de Vigo, E-36310 Vigo, SpainGrupo de Ecoloxía Animal (GEA), Universidade de Vigo, E-36310 Vigo, SpainSeaweed is a valuable natural resource, but drift or beach-cast seaweed is considered a waste product. Although seaweed is traditionally used as an organic amendment, vermicomposting has the potential to transform the material into valuable organic fertilizer, thereby enhancing its microbial properties. This study aimed to investigate the dynamics of the taxonomic and functional bacterial communities in seaweed during the vermicomposting process by high-throughput sequencing of 16S rRNA gene amplicons. Vermicomposting changed the composition of the bacterial communities, as indicated by the low proportion of bacterial taxa common to the bacterial communities in the raw seaweed and vermicompost (21 to 56 ASVs from more than 900 ASVs per sample type). The observed increase in taxonomic diversity (32% mean increase across sampling times) also affected the functionality of the bacterial communities present in the vermicompost. The diverse bacterial community showed enriched functional pathways related to soil health and plant growth, including the synthesis of antibiotics, amino acids, and phytohormones, as well as the degradation of bisphenol. In conclusion, in terms of microbial load and diversity, vermicompost derived from seaweed is a more valuable organic fertiliser than seaweed itself.https://www.mdpi.com/2076-2607/13/1/30earthwormsseaweedbacterial communities16S RNAbacterial functionalityvermicompost
spellingShingle Manuel Aira
Ana Gómez-Roel
Jorge Domínguez
Taxonomic and Functional Dynamics of Bacterial Communities During Drift Seaweed Vermicomposting
Microorganisms
earthworms
seaweed
bacterial communities
16S RNA
bacterial functionality
vermicompost
title Taxonomic and Functional Dynamics of Bacterial Communities During Drift Seaweed Vermicomposting
title_full Taxonomic and Functional Dynamics of Bacterial Communities During Drift Seaweed Vermicomposting
title_fullStr Taxonomic and Functional Dynamics of Bacterial Communities During Drift Seaweed Vermicomposting
title_full_unstemmed Taxonomic and Functional Dynamics of Bacterial Communities During Drift Seaweed Vermicomposting
title_short Taxonomic and Functional Dynamics of Bacterial Communities During Drift Seaweed Vermicomposting
title_sort taxonomic and functional dynamics of bacterial communities during drift seaweed vermicomposting
topic earthworms
seaweed
bacterial communities
16S RNA
bacterial functionality
vermicompost
url https://www.mdpi.com/2076-2607/13/1/30
work_keys_str_mv AT manuelaira taxonomicandfunctionaldynamicsofbacterialcommunitiesduringdriftseaweedvermicomposting
AT anagomezroel taxonomicandfunctionaldynamicsofbacterialcommunitiesduringdriftseaweedvermicomposting
AT jorgedominguez taxonomicandfunctionaldynamicsofbacterialcommunitiesduringdriftseaweedvermicomposting