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dc.contributor.authorMartín-Clemente, Elena
dc.contributor.authorMelero Jiménez, Ignacio José
dc.contributor.authorBañares‑España, Elena
dc.contributor.authorFlores-Moya, Antonio 
dc.contributor.authorGarcía-Sánchez, María Jesús 
dc.date.accessioned2022-05-05T09:22:41Z
dc.date.available2022-05-05T09:22:41Z
dc.date.issued2021-11-22
dc.identifier.citationMartín-Clemente, E., Melero-Jiménez, I.J., Bañares-España, E. et al. Photosynthetic performance in cyanobacteria with increased sulphide tolerance: an analysis comparing wild-type and experimentally derived strains. Photosynth Res 151, 251–263 (2022). https://doi.org/10.1007/s11120-021-00882-8es_ES
dc.identifier.urihttps://hdl.handle.net/10630/24046
dc.description.abstractSulphide is proposed to have influenced the evolution of primary stages of oxygenic photosynthesis in cyanobacteria. However, sulphide is toxic to most of the species of this phylum, except for some sulphide-tolerant species showing various sulphide-resistance mechanisms. In a previous study, we found that this tolerance can be induced by environmental sulphidic conditions, in which two experimentally derived strains with an enhanced tolerance to sulphide were obtained from Microcystis aeruginosa, a sensitive species, and Oscillatoria, a sulphide-tolerant genus. We have now analysed the photosynthetic performance of the wild-type and derived strains in the presence of sulphide to shed light on the characteristics underlying the increased tolerance. We checked whether the sulphide tolerance was a result of higher PSII sulphide resistance and/or the induction of sulphide-dependent anoxygenic photosynthesis. We observed that growth, maximum quantum yield, maximum electron transport rate and photosynthetic efficiency in the presence of sulphide were less affected in the derived strains compared to their wild-type counterparts. Nevertheless, in 14C photoincoporation assays, neither Oscillatoria nor M. aeruginosa exhibited anoxygenic photosynthesis using sulphide as an electron donor. On the other hand, the content of photosynthetic pigments in the derived strains was different to that observed in the wild-type strains. Thus, an enhanced PSII sulphide resistance appears to be behind the increased sulphide tolerance displayed by the experimentally derived strains, as observed in most natural sulphide-tolerant cyanobacterial strains. However, other changes in the photosynthetic machinery cannot be excluded.es_ES
dc.description.sponsorshipThis work was financially supported by the projects CGL2014-53862-P (Ministerio de Economía y Competitividad, Spain) and CGL2017-87314-P (Ministerio de Economía, Industria y Competitividad, Spain). EM-C was supported by grant BES-2015-072984 (Ministerio de Economía y Competitividad, Spain) and grant from Plan Propio de Investigación y Transferencia (Universidad de Málaga, Spain). Funding for open access charge: Universidad de Málaga / CBUA.es_ES
dc.language.isoenges_ES
dc.publisherSpringeres_ES
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectFotosíntesises_ES
dc.subject.otherMicrocystis aeruginosaes_ES
dc.subject.otherOscillatoriaes_ES
dc.subject.otherCyanobacteriaes_ES
dc.subject.otherSulphide resistancees_ES
dc.subject.otherPhotosynthesises_ES
dc.titlePhotosynthetic performance in cyanobacteria with increased sulphide tolerance: an analysis comparing wild-type and experimentally derived strainses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.centroFacultad de Cienciases_ES
dc.identifier.doihttps://doi.org/10.1007/s11120-021-00882-8
dc.rights.ccAtribución 4.0 Internacional*


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