Photon irradiance required to support optimal growth and interrelations between irradiance and pigment composition in the green alga Haematococcus pluvialis

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dc.contributor.authorTorzillo, G
dc.contributor.authorGoksan, T
dc.contributor.authorIsik, O
dc.contributor.authorGokpinar, S
dc.date.accessioned2019-10-27T18:58:13Z
dc.date.available2019-10-27T18:58:13Z
dc.date.issued2005
dc.departmentEge Üniversitesien_US
dc.description.abstractThe aim of the work was to find the optimal photon irradiance for the growth of green cells of Haematococcus pluvialis and to study the interrelations between changes in photochemical parameters and pigment composition in cells exposed to photon irradiances between 50 and 600 mu mol m(-2) s(-1) and a light: dark cycle of 12: 12 h. Productivity of cultures increased with irradiance. However, the rate of increase was higher in the range 50 - 200 mu mol(-2) s(-1). The carotenoid content increased with increasing irradiance, while the chlorophyll content decreased. The maximum quantum yield of PSII (F-v/F-m) gradually declined from 0.76 at the lowest irradiance of 50 mu mol(-2) s(-1) to 0.66 at 600 mu mol(-2) s(-1). Photosynthetic activity showed a drop at the end of the light period, but recovered fully during the following dark phase. A steep increase in non-photochemical quenching was observed when cultures were grown at irradiances above 200 mu mol(-2) s(-1). A sharp increase in the content of secondary carotenoids also occurred above 200 mu mol m(-2) s(-1). According to our results, with H. pluvialis green cells grown in a 5-cm light path device, 200 mu mol(-2) s(-1) was optimal for growth, and represented a threshold above which important changes in both photochemical parameters and pigment composition occurred.en_US
dc.identifier.doi10.1080/09670260500123609
dc.identifier.endpage240en_US
dc.identifier.issn0967-0262
dc.identifier.issn0967-0262en_US
dc.identifier.issue2en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage233en_US
dc.identifier.urihttps://doi.org/10.1080/09670260500123609
dc.identifier.urihttps://hdl.handle.net/11454/37434
dc.identifier.volume40en_US
dc.identifier.wosWOS:000230429100009en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherTaylor & Francis Ltden_US
dc.relation.ispartofEuropean Journal of Phycologyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectastaxanthinen_US
dc.subjectcarotenoidsen_US
dc.subjectchlorophyll fluorescenceen_US
dc.subjectHaematococcus pluvialisen_US
dc.subjectphotosynthesisen_US
dc.subjectirradianceen_US
dc.subjectxanthophyll cycleen_US
dc.titlePhoton irradiance required to support optimal growth and interrelations between irradiance and pigment composition in the green alga Haematococcus pluvialisen_US
dc.typeArticleen_US

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