{"refrec":{"BRefID":58498,"RR":"<b>Mercado, J.M.; del Pilar Sánchez-Saavedra, M.; Correa-Reyes, G.; Lubián, L.; Montero, O.; Figueroa, F.L.</b> (2004). Blue light effect on growth, light absorption characteristics and photosynthesis of five benthic diatom strains. <i>Aquat. Bot. 78(3)</i>: 265-277. <a href=\"http://dx.doi.org/10.1016/j.aquabot.2003.11.004\" target=\"_blank\">http://dx.doi.org/10.1016/j.aquabot.2003.11.004</a>","BEntID":56066,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Aquat. Bot. 78(3)</i>: 265-277. <a href=\"https://dx.doi.org/10.1016/j.aquabot.2003.11.004\" target=\"_blank\">https://dx.doi.org/10.1016/j.aquabot.2003.11.004</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Mercado, J.M.; del Pilar Sánchez-Saavedra, M.; Correa-Reyes, G.; Lubián, L.; Montero, O.; Figueroa, F.L.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Mercado, J.M. <i>et al.</i>","Englishabstract":"Bio-optical characteristics and photosynthetic performance of five strains of benthic diatoms belonging to three different species (<i>Nitzschia thermalis</i> Kützing var. <i>minor</i> Hilse <i>sensu</i> Podzorski, <i>Nitzschia laevis</i> Hust and <i>Navicula incerta</i> Grunow) were examined. The effects of treatments with monochromatic blue light (BL) were also determined. The values of photosynthesis rate at saturating photon fluence rate (PFR) (P<sub>max</sub>) and ascending initial slope of the P-PFR curves (alpha) ranged from 0.22 to 3.58 µmol O<sub>2</sub> per mg Chl a min<sup>-1</sup> and from 0.012 to 0.169 µmol O<sub>2</sub> per mg Chl a (µmol photons m<ssup>-2</sup> s<sup>-1</sup>)<sup>-1</sup> respectively. Onset of light saturation parameter (E<sub>k</sub>) ranged from 43 to 12 µmol photons m<sup>-2</sup> s<sup>-1</sup>. These values were comparable to those reported from measurements performed with sub-tidal benthic communities. In vivo effective optical cross-section of Chl a (a values) was correlated to average cell surface area. Interestingly, a and  alpha were also negatively correlated, probably indicating that a higher pigment packaging affects negatively to alpha. The acclimation of the five strains to monochromatic BL for 2 weeks produced a reduction of P<sub>max</sub> and  although the effective quantum yield of photosystem II (deltaF/F<sub>m'</sub>) was not affected. In addition to these changes, chlorophyll a increased and a decreased in the five strains. Therefore, it was concluded that the reduction of a could contribute to the changes in the photosynthetic performance in BL.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Blue light effect on growth, light absorption characteristics and photosynthesis of five benthic diatom strains","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2025-07-02 08:33:14.980000","timezone_type":1,"timezone":"+00:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"bio-optic; benthic diatoms; chlorophyll fluorescence; light quality;photosynthesis","OtherDescriptors":null,"Notes":null,"AnaPub":2004,"MonPub":null,"DateUpdate":"2018-05-17","DateCreate":"2004-03-18","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000220269500006","VABBcode":null,"OpenAcc":1,"DOI":"10.1016/j.aquabot.2003.11.004"},"refs":null,"anarec":{"AnaID":58498,"PubliDate":2004,"Pagination":"265-277","XtraPublOfAnaID":null,"ISBN":null,"Volume":"78","Issue":"3","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":42195,"SerRR":"Aquatic Botany. 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