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Yeast species associated with industrial cultures of the marine microalgae Tisochrysis lutea: Temperature profiles and auxin production

2025-11-18Journal article Open access
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dc.contributor.authorMatos, Madalena
dc.contributor.authorFernandes, Mónica A.
dc.contributor.authorCoelho, Natacha
dc.contributor.authorSantos, Tamara
dc.contributor.authorVarela, João
dc.contributor.authorRodrigues, Alexandre M. C.
dc.contributor.authorSá-Correia, Isabel
dc.date.accessioned2025-12-15T14:00:31Z
dc.date.available2025-12-15T14:00:31Z
dc.date.issued2025-11-18
dc.description.abstractThis study provides the first systematic characterization of culturable yeast diversity associated with large-scale cultivation of Tisochrysis lutea. This marine haptophyte is widely used in aquaculture for its high content of essential fatty acids, pigments, and other bioactive compounds. Culture sampling was conducted at Necton S.A. facilities (Olhão, Portugal) over full production cycles from 5 L flasks until tubular photobioreactors during the months of May and June. The study aimed to identify and isolate the present yeast species and evaluate their physiological traits relevant to potential co-cultivation strategies. All retained isolates belonged to the phylum Basidiomycota, with six species identified: Rhodotorula sphaerocarpa (45%), R. mucilaginosa (20%), R. diobovata (13%), Vishniacozyma carnescens (16%), Naganishia diffluens (3%), and Moesziomyces aphidis (3%). Temperature growth profiles (10–40 °C), tolerance to artificial sea water, and auxin production were characterized, revealing that, except for V. carnescens, the yeast isolates grow optimally at 25–30 °C, within the ideal range for T. lutea cultivation. Results suggest that some of these marine yeasts, particularly R. sphaerocarpa and R. mucilaginosa isolates, could serve as biological enhancers of algal productivity, in situ. This foundational work supports future efforts to develop targeted yeast management or co-cultivation strategies, with the goal of improving biomass yield and metabolite production in industrial T. lutea photobioreactors.eng
dc.description.sponsorshipThis work was financially supported by “Pacto da Bioeconomia azul” (Project No. C644915664-00000026) within the WP5 Algae Vertical and WP9 Portuguese Blue Biobank, funded by Next Generation EU European Fund and the Portuguese Recovery and Resilience Plan (PRR), under the scope of the incentive line “Agendas for Business Innovation” through the funding scheme C5—Capitalization and Business Innovation. Funding received from Fundação para a Ciência e a Tecnologia (FCT) by iBB—Institute for Bioengineering and Biosciences (UIDB/04565/2020 and UIDP/04565/2020) and i4HB-Institute for Health and Bioeconomy (LA/P/0140/2020), is also acknowledged. This work was also funded by FCT with the grants https://doi.org/10.54499/UIDB/04326/2020, https://doi.org/10.54499/UIDP/04326/2020 and https://doi.org/10.54499/LA/P/0101/2020 awarded to CCMAR and the PhD SFRH/BD/140143/2018 grant awarded to Tamára Santos.
dc.identifier.doi10.3390/jof11110818
dc.identifier.issn2309-608X
dc.identifier.urihttp://hdl.handle.net/10400.1/27955
dc.language.isoeng
dc.peerreviewedyes
dc.publisherMDPI
dc.relationInstitute for Bioengineering and Biosciences
dc.relationInstitute for Health and Bioeconomy
dc.relationMicrobiome-mediated improvement of industrial Chlorella biomass production
dc.relationAlgarve Centre for Marine Sciences
dc.relationCentre for Marine and Environmental Research
dc.relation.ispartofJournal of Fungi
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectYeast species
dc.subjectYeast isolation
dc.subjectMarine yeasts
dc.subjectRhodotorula
dc.subjectIndustrial microalgae cultivation
dc.subjectYeast-microalgae association
dc.subjectTemperature profiles
dc.subjectAuxin production
dc.titleYeast species associated with industrial cultures of the marine microalgae Tisochrysis lutea: Temperature profiles and auxin productioneng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleInstitute for Bioengineering and Biosciences
oaire.awardTitleInstitute for Health and Bioeconomy
oaire.awardTitleMicrobiome-mediated improvement of industrial Chlorella biomass production
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleCentre for Marine and Environmental Research
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04565%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0140%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F140143%2F2018/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04326%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0101%2F2020/PT
oaire.citation.issue11
oaire.citation.titleJournal of Fungi
oaire.citation.volume11
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameCoelho
person.familyNameSantos
person.familyNameVarela
person.givenNameNatacha
person.givenNameTamara
person.givenNameJoão
person.identifier.ciencia-idC518-BDB3-E127
person.identifier.orcid0000-0003-4265-5622
person.identifier.orcid0000-0001-9008-4436
person.identifier.orcid0000-0003-3101-693X
person.identifier.ridM-4223-2013
person.identifier.scopus-author-id55741416000
project.funder.identifierhttp://doi.org/10.13039/501100001871
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project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
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