Studies on enhanced post-illumination respiration in microalgae

John Beardall, Tineke Burger-wiersma, Machteld Rijkeboer, Assaf Sukenik, Jacques Lemoalle, Zvy Dubinsky, Daniel Fontvielle

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    58 Scopus citations

    Abstract

    The extent of enhanced post-illumination respiration (EPIR) has been investigated in a number of microalgae. Respiration rates, as determined by O2 consumption, were enhanced (in all but one case) by 50-140% following pre-exposure to high photon flux compared to rates obtained for steady-state dark respiration. The extent of EPIR was dependent more on photon flux than on duration of exposure, although the latter did have some effect. In Isochrysis galbana and Chaetoceros calcitrens, EPIR effects were also demonstrated using [14C]CO2 evolution. In I.galbana, release of CO2 from cells pre-exposed to a period of high photon flux was most rapid from carbohydrate and low-molecular-weight metabolites. Data obtained from Thalassiosira weisflogii indicate that cells grown at low photon flux are more susceptible to EPIR than those grown under high photon flux. These results are discussed in the context of various hypotheses that have been proposed regarding the mechanism of EPIR effects.

    Original languageEnglish
    Pages (from-to)1401-1410
    Number of pages10
    JournalJournal of Plankton Research
    Volume16
    Issue number10
    DOIs
    StatePublished - 1994

    Bibliographical note

    Funding Information:
    The majority of the work reported here was carried out at the 4th International Workshop of the Group for Aquatic Primary Productivity (GAP). The authors are grateful for the support from GAP and the Centre de Recherche en Ecologie Marine et Aquaculture de L'Houmeau, under whose auspices the workshop was held.

    Funding

    The majority of the work reported here was carried out at the 4th International Workshop of the Group for Aquatic Primary Productivity (GAP). The authors are grateful for the support from GAP and the Centre de Recherche en Ecologie Marine et Aquaculture de L'Houmeau, under whose auspices the workshop was held.

    FundersFunder number
    Centre de Recherche en Ecologie Marine et Aquaculture de L'Houmeau
    GAP

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