Research on red algal pigments. 5. The effect of the intensity of white and green light on the rate of photosynthesis and its relationship to pigment components in Gracilaria compressa (C. Ag.) Grev. (Rhodophyceae, Gigartinales)

Calabrese, Giuseppe; Felicini, Gian Piero

doi:10.2216/i0031-8884-12-3-195.1

Cited by 11 publications

(4 citation statements)

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“…Brody and Emerson 1959, Calabrese and Felicini 1973, Waaland et al 1974, Lapointe and Duke 1984, Macler and West 1987. In the present experiments we found that both phycobiliprotein and chlofphyll a content decreased towards the higher photon flux densities and that plants grown under Ndeficient conditions contained lower levels of pigments than plants grown under N-sufficient conditions (Table II and Fig.…”

Section: Discussionsupporting

confidence: 69%

Culture Studies of Gelidium latifolium (Grev.) Born et Thur. (Rhodophyta) from Norway. Growth and Nitrogen Storage in Response to Varying Photon Flux Density, Temperature and Nitrogen Availability

Fredriksen¹,

Rueness²

1989

Botm

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Gelidium latifolium from the Norwegian west coast was grown at 25 combinations of photon flux density (PFD, range 20-300 μιηοΐ m" 2 s" 1 ) and temperature (range 14-28 °C) under nitrogen sufficient and nitrogen deficient conditions. Growth rate under nitrogen sufficient conditions increased towards higher PFD, while it was less affected by temperature. Higher growth rates at the higher PFD were correlated with increased lateral branching. Pigmentation was affected by both PFD and nitrogen availability. Phycobiliproteins and chlorophyll a decreased with increasing PFD, with the lowest pigment content in plants grown under Ndeficient conditions. Analyses of free ainino acids in the algae indicated that phycobiliproteins were more important as storage compounds for nitrogen than free amino acids. The importance of phycobiliproteins and other nitrogen compounds as nitrogen pools under nitrogen limiting conditions is discussed. The C: N ratio was not affected by PFD as long as nitrogen was in excess, but increase with increasing PFD when nitrogen was limiting.

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Section: Discussionsupporting

confidence: 69%

Culture Studies of Gelidium latifolium (Grev.) Born et Thur. (Rhodophyta) from Norway. Growth and Nitrogen Storage in Response to Varying Photon Flux Density, Temperature and Nitrogen Availability

Fredriksen¹,

Rueness²

1989

Botm

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“…However, the regression model leaves ammonium as the major and only significant factor. The fact that higher light intensity and lower ammonium concentration decreased chlorophyll concentration confirms results obtained in previous studies of other Gelidium species (Brody and Emerson 1959;Calabrese and Felicini 1973;Macler and West 1987;Fredriksen and Rueness 1989). pH control by addition of HCl increased chlorophyll concentration in contrast to addition of CO 2 and bicarbonate.…”

Section: Chlorophyllsupporting

confidence: 89%

Effect of outdoor conditions on growth rate and chemical composition of Gelidium crinale in culture

2007

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A comprehensive study of the major environmental factors affecting growth and chemical composition of Gelidium crinale is presented here for the first time. The purpose of this study was to analyze the significance of the major growth factors and to formulate them into regression models. For this purpose summer and winter experiments were conducted in small aerated seawater tanks under various light and fertilizer conditions. The effects of carbon source, pH control and microelements were also tested. Finally, an annual growth experiment was conducted in order to support the two-season experiment. The major limiting seasonal factor was found to be temperature, which positively affected weekly growth rate, dry weight and gel strength, while negatively affecting the agar percentage. Ammonium was also revealed as a major limiting factor, positively affecting chlorophyll and protein concentrations, and negatively affecting carbohydrate concentration. Other growth factors, such as light intensity, pH, carbon source and microelements, were less-or non-effective, being already almost optimal under ambient conditions.

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“…Similar trends have been reported in previous work on red algae. For example, variations in the color of the fronds of Gracilaria compressa have been related to differences in chl a and phycoerythrin concentrations (Calabrese and Felicini 1973). In laboratory experiments, the increase of the biliproteins:chl a ratio with diminishing light was reported by Waaland et al (1974) for Griffithsia pacifica.…”

Section: Discussionmentioning

confidence: 99%

PHOTOACCLIMATION IN THE TROPICAL CORALLINE ALGA HYDROLITHON ONKODES (RHODOPHYTA, CORALLINACEAE) FROM A FRENCH POLYNESIAN REEF

Payri

Maritorena

Bizeau

et al. 2001

Journal of Phycology

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Pigment concentration, in vivo absorption, and photosynthetic parameters of the coralline alga Hydrolithon onkodes (Heydrich) Penrose and Woelkerling were compared among samples from a lagoon and from a reef crest of Tahiti Island. Four groups of specimens were considered, differing in their natural exposure to PAR. For specimens collected from the lagoon, the tissues from low-light samples had significantly higher pigment concentration, particularly chl a and phycobilins, compared with the highlight exposed plants that contained more total carotenoids. The in vivo absorption spectra normalized to chl a (called a* values) also revealed differences. The low-light samples had a reduced absorption capacity and a well-marked phycobilin absorption signature, whereas sunlit samples showed a greater absorption at wavelengths absorbed mainly by chl a and carotenoids. The decrease of a* when pigment concentration increased is interpreted as a consequence of the pigment packaging. Significantly lower ␣ (chlorophyll basis) and higher E k values were found in the shaded plants. The values of P max for the four groups of specimens were not significantly different. The samples showed various degrees of photoinhibition depending on the light exposure during growth, and this effect was more pronounced in the shaded plants. The specimens from the reef crest deviate from the general model presented for the lagoon samples and show a mix of sun-and shade-exposed characteristics. We have shown that the coralline alga H. onkodes responds to its light environment, probably by acclimation rather than ecotypic genetic variation, by adjusting its physiology, but some morphological differences are also involved. Photoacclimation can explain partly the wide distribution of this species over the reef ecosystem and its major contribution to the building of the reef.

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Research on red algal pigments. 5. The effect of the intensity of white and green light on the rate of photosynthesis and its relationship to pigment components in Gracilaria compressa (C. Ag.) Grev. (Rhodophyceae, Gigartinales)

Cited by 11 publications

References 0 publications

Culture Studies of Gelidium latifolium (Grev.) Born et Thur. (Rhodophyta) from Norway. Growth and Nitrogen Storage in Response to Varying Photon Flux Density, Temperature and Nitrogen Availability

Culture Studies of Gelidium latifolium (Grev.) Born et Thur. (Rhodophyta) from Norway. Growth and Nitrogen Storage in Response to Varying Photon Flux Density, Temperature and Nitrogen Availability

Effect of outdoor conditions on growth rate and chemical composition of Gelidium crinale in culture

PHOTOACCLIMATION IN THE TROPICAL CORALLINE ALGA HYDROLITHON ONKODES (RHODOPHYTA, CORALLINACEAE) FROM A FRENCH POLYNESIAN REEF

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