Journal ArticleDOI
The Adaptation of Plankton Algae IV. Light Adaptation in Different Algal Species
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Two types with regard to adaptation to different light intensities are described: tbe Chlorella type and the Cyclotella type, which is mostly found among the green algae, and which adapts to a new light intensity mainly by changing the pigment content.Abstract:
Two types with regard to adaptation to different light intensities are described: tbe Chlorella type and the Cyclotella type. The Chlorella type is mostly found among the green algae, the Cyclotella type among the diatoms. The Chlorella type adapts to a new light intensity mainly by changing the pigment content. Therefore the cells adapted to a high light intensity have a lower chlorophyll a content per cell than cells adapted to a low light intensity. Light saturation is mostly rather low for cells adapted to low light intensities. The light-saturated rate of photosynthesisist mostly lower for cells adapted to a high light intensity than for cells adapted to a low light intensity. The actual photosynthesis is not much higher at a high light intensity than at a low one. The actual photosynthesis is the photosynthesis at the light intensity where the cells are grown. - The Cyclotella type adapts only by changing the light-saturated rate. The chlorophyll content is the same in cells grown at low and high light intensities. Light saturation for cells grown at a low light intensity is rather high. The light-saturated rate is much higher in the case examined at the high light intensity than at the low one. The actual photosynthesis is considerably higher for cells grown at the high light intensities than for cells grown at low light intensities.- The two adaptation types are not sharply separated since transition types occur.read more
Citations
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Journal ArticleDOI
Adaptation of unicellular algae to irradiance: an analysis of strategies
TL;DR: Comparison of the photon flux densities at which photoinhibition occurs in dinoflagellates and diatoms suggests that the former often experiencephotoinhibition at comparatively low irradiances, and this tolerance of a large absolute range of photon fluxdensities may, in part, explain why di atoms are often associated with spring blooms.
Book ChapterDOI
Light-Shade Adaptation in Marine Phytoplankton
TL;DR: Cross-transplantation studies showed that some species of higher plants can physiologically acclimate to widely varying light regimes, but most higher plants have evolved to become either sun or shade adapted in a Darwinian sense.
Journal ArticleDOI
Nitrogen assimilation of an oceanic diatom in nitrogen-limited continuous culture1
TL;DR: The oceanic diatom Thalassiosira pseudonana Hasle and Heimdal (formerly Cyclotella nana) was grown with 12L:12D illumination cycles in nitrogen‐limited continuous culture with a mixture of ammonium and nitrate as the N source to study the in vitro activities of the assimilatory enzymes nitrate reductase and glutamic dehydrogenase.
Book ChapterDOI
Light-harvesting processes in algae
TL;DR: This chapter intends to bring much of the dispersed literature together, so as to achieve an integrated framework from which conclusions can be drawn to further stimulate research on algae.
Journal ArticleDOI
Comparative physiological study of marine diatoms and dinoflagellates in relation to irradiance and cell size. i. growth under continuous light1,2
TL;DR: The relationship between cell division rate and the chl a/protein ratio is discussed and when the light‐saturated cell division rates were plotted against cell size as protein/cell, the diatoms and dinoflagellates fell on two separate lines with the di atoms having higher rates.
References
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Journal ArticleDOI
Photosynthetic characteristics of some freshwater plankton diatoms in relation to underwater radiation
TL;DR: Photosynethtic behaviour of the diatoms, recorded from exposures at varying depths in the English Lakes, is analysed in terms of the photosynthetic characteristics of the species and the environmental conditions of underwater radiation and temperature.
Journal ArticleDOI
Light Adaptation in Marine Phytoplankton Populations and Its Interrelation with Temperature
Journal ArticleDOI
The effect of growth environment on the physiology of algae: light intensity(1) (2).
TL;DR: Measurements were made of growth, pigmentation, photosynthesis, respiration, quinone Hill reaction, cell morphology, and structure as a function of growth light intensity for various algae.
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