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Chemical and microbial diversity of a tropical intertidal ascidian holobiont

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Author(s):
Bauermeister, Anelize ; Furtado, Luciana Costa ; Ferreira, Elthon G. ; Moreira, Eduarda Antunes ; Jimenez, Paula Christine ; Lopes, Norberto Peporine ; Araujo, Welington Luiz ; Olchanheski, Luiz Ricardo ; Lotufo, Tito Monteiro da Cruz ; Costa-Lotufo, Leticia Veras
Total Authors: 10
Document type: Journal article
Source: MARINE ENVIRONMENTAL RESEARCH; v. 194, p. 13-pg., 2023-12-26.
Abstract

The tropical ascidian Eudistoma vannamei, endemic to the northeastern coast of Brazil, is considered a prolific source of secondary metabolites and hosts Actinomycetota that produce bioactive compounds. Herein, we used an omics approach to study the ascidian as a holobiont, including the microbial diversity through 16S rRNA gene sequencing and metabolite production using mass spectrometry-based metabolomics. Gene sequencing analysis revealed all samples of E. vannamei shared about 50% of the observed ASVs, and Pseudomonadota (50.7%), Planctomycetota (9.58%), Actinomycetota (10.34%), Bacteroidota (12.05%) were the most abundant bacterial phyla. Analysis of tandem mass spectrometry (MS/MS) data allowed annotation of compounds, including phospholipids, amino acids, and pyrimidine alkaloids, such as staurosporine, a member of a well-known chemical class recognized as a microbial metabolite. Isolated bacteria, mainly belonging to Streptomyces and Micromonospora genera, were cultivated and extracted with ethyl acetate. MS/MS analysis of bacterial extracts allowed annotation of compounds not detected in the ascidian tissue, including marineosin and dihydroergot-amine, yielding about 30% overlapped ions between host and isolated bacteria. This study reveals E. vannamei as a rich source of microbial and chemical diversity and, furthermore, highlights the importance of omic tools for a comprehensive investigation of holobiont systems. (AU)

FAPESP's process: 20/02207-5 - Inventorying secondary metabolism applying metabolomic strategies: contribution to the Brazilian biodiversity valuation
Grantee:Norberto Peporine Lopes
Support Opportunities: BIOTA-FAPESP Program - Thematic Grants
FAPESP's process: 19/03008-9 - Chemical investigation on marine actinomycetes extracts with potential cytotoxic activity in tumoral lines and insecticide activity on Aedes aegypti species
Grantee:Eduarda Antunes Moreira
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 15/17177-6 - Integrative approach on the sustainable prospection of marine natural products: from diversity to anticancer compounds
Grantee:Leticia Veras Costa Lotufo
Support Opportunities: BIOTA-FAPESP Program - Thematic Grants
FAPESP's process: 22/12654-4 - Marine myxobacteria from the state of São Paulo as a source of protease inhibitors
Grantee:Paula Christine Jimenez
Support Opportunities: BIOTA-FAPESP Program - Regular Research Grants
FAPESP's process: 17/18235-5 - Anticancer potential of isolated substances from Streptomyces SP. recovered from ascidian Euherdmania SP
Grantee:Luciana Costa Furtado
Support Opportunities: Scholarships in Brazil - Master
FAPESP's process: 20/08987-2 - Effect of histone deacetylase and proteasome inhibitors in Glioma models
Grantee:Luciana Costa Furtado
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 17/17648-4 - Integrative approach on the sustainable prospection of marine natural products: from diversity to anticancer compounds
Grantee:Anelize Bauermeister
Support Opportunities: Scholarships in Brazil - Post-Doctoral