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Evolution in the photosynthetic oxygen rate of a Cd-resistant strain of Dictyosphaerium chlorelloides by changes in light intensity and temperature

dc.contributor.authorCortés Téllez, Alondra A.
dc.contributor.authorSánchez-Fortún Rodríguez, Sebastián
dc.contributor.authorD'Ors de Blas, Ana
dc.contributor.authorChacón García, Luis
dc.contributor.authorGarnica-Romo, Ma. Guadalupe
dc.contributor.authorBartolomé Camacho, M. Carmen
dc.date.accessioned2024-01-22T12:27:35Z
dc.date.available2024-01-22T12:27:35Z
dc.date.issued2020
dc.description.abstractEnvironmental factors such as temperature and light are the most determinants in the photosynthetic productivity in microalgae. However, under extreme of these conditions, certain resistant microalgae strains possess additional abilities such as growth in the presence of high concentrations of metals and some can improve in combinations of more than one abiotic stress. Therefore, the aim of this research was to evaluate the efficiency in photosynthetic production through the oxygen balance to variations in photon intensity, and under temperature changes in a Cd-resistant strain (DcRCd100) compared to the wild-type strain (Dc1Mwt) of Dictyosphaerium chlorelloides. The results showed that the DcRCd100 strain has the maximum efficiency at 200  μmol m−2 s−1 on photosynthesis net (Pn) (96.32 ± 3.63% nmol O2 ml−1 min−1) as the threshold light saturation, and an adaptation to maintain this maximum photosynthetic gross (Pg) rate at 30 °C (94.99 ± 10.03% nmol O2 ml−1 min−1) due to possible modifications in the photosynthetic apparatus that is reflected in the net evolution rate of O2 to deal with such evaluated conditions. While, Dc1Mwt strain its maximum photosynthetic efficiency was at 300 μmol m−2 s−1 and 21 °C (97.72 ± 2.99 and 99.85 ± 0.30%nmol O2 ml−1 min−1, respectively) and in optimal response to the oxygen balance that is normally achieved by this mesophilic genus. These results provide a new prediction of mechanisms in the oxygen evolution in photosynthesis that rules the correlation between resistance and adaptation to extreme abiotic conditions in metal resistant strains of eukaryotic microalgae.
dc.description.departmentSección Deptal. de Farmacología y Toxicología (Veterinaria)
dc.description.facultyFac. de Veterinaria
dc.description.refereedTRUE
dc.description.sponsorshipMexican National Council for Science and Technology
dc.description.sponsorshipMexican University the Benemérita
dc.description.sponsorshipUniversidad Complutense de Madrid
dc.description.sponsorshipCentenaria Universidad Michoacana de San Nicolás de Hidalgo (México)
dc.description.statuspub
dc.identifier.citationCortés Téllez, A. A., Sánchez-Fortún Rodríguez, S., D'ors de Blas, A., García, L. C., Garnica-Romo, M. G., & Bartolomé Camacho, M. C. (2020). Evolution in the photosynthetic oxygen rate of a Cd-resistant strain of Dictyosphaerium chlorelloides by changes in light intensity and temperature. Chemosphere, 239, 124672
dc.identifier.doi10.1016/j.chemosphere.2019.124672
dc.identifier.issn0045-6535
dc.identifier.officialurlhttps://doi.org/10.1016/j.chemosphere.2019.124672
dc.identifier.pmid31494319
dc.identifier.urihttps://hdl.handle.net/20.500.14352/94371
dc.journal.titleChemosphere
dc.language.isoeng
dc.publisherELSEVIER SCI LTD
dc.relation.projectID(No. 286260)
dc.relation.projectID(CIC PI.26.8)
dc.rightsAttribution 4.0 Internationalen
dc.rights.accessRightsrestricted access
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subject.cdu615.9
dc.subject.keywordDictyosphaerium chlorelloides
dc.subject.keywordCadmium resistance
dc.subject.keywordLight threshold saturation
dc.subject.keywordPhoton intensity
dc.subject.keywordPhotosynthetic efficiency
dc.subject.keywordTemperature
dc.subject.ucmCiencias
dc.subject.unesco3214 Toxicología
dc.titleEvolution in the photosynthetic oxygen rate of a Cd-resistant strain of Dictyosphaerium chlorelloides by changes in light intensity and temperature
dc.typejournal article
dc.type.hasVersionAM
dc.volume.number239
dspace.entity.typePublication
relation.isAuthorOfPublication4079fa71-05a5-4b8e-b7a8-e818a46267ce
relation.isAuthorOfPublication0df45535-59cb-4207-8db9-f4ca81b3d52c
relation.isAuthorOfPublication.latestForDiscovery4079fa71-05a5-4b8e-b7a8-e818a46267ce

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