Photoadaptive responses of the tropical red alga Eucheuma striatum Schmitz (Gigartinales) to ultra-violet radiation

Wood, William F.

doi:10.1016/0304-3770(89)90019-3

Cited by 89 publications

(54 citation statements)

References 15 publications

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“…For example, mycosporine-like amino acids (MAAs) show absorption maxima from 310 to 360 nm and have been identified in a wide variety of marine organisms, including dinoflagellates (Carreto et al, 1990) and macroalgae (Sivalingam et al, 1974;Wood, 1989). However, pennate diatoms -and most benthic diatoms are pennate -have been shown to contain very low concentrations of MAAs (Helbling et al, 1996).…”

Section: Introductionmentioning

confidence: 99%

Effects of UV radiation on five marine microphytobenthic Wadden sea diatoms, isolated from the Solthörn tidal flat (Lower Saxony, southern North Sea) – Part II: changes in carbohydrate, amino acid and fatty acid composition

Scholz

Rúa

Liebezeit

2014

European Journal of Phycology

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Section: Introductionmentioning

confidence: 99%

Effects of UV radiation on five marine microphytobenthic Wadden sea diatoms, isolated from the Solthörn tidal flat (Lower Saxony, southern North Sea) – Part II: changes in carbohydrate, amino acid and fatty acid composition

Scholz

Rúa

Liebezeit

2014

European Journal of Phycology

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“…However, as was recently pointed out by Franklin & Forster (1997) and , the literature on the effects of u.v.-B radiation on benthic algae is meagre. Previous studies have mainly focused on the effects of u.v.-B radiation on growth (Wood, 1987 ;Grobe & Murphy, 1994 ;Dring et al, 1996 a), photosynthesis (Wood, 1989 ;Larkum & Wood, 1993 ;Clendennen et al, 1996 ;Dring et al, 1996 a, b ;Ha$ der, Herrmann & Regas, 1996 a ;Hanelt, Wiencke & Nultsch, 1997 b), synthesis and accumulation of u.v.-B-absorbing compounds (Post & Larkum, 1993 ;Karsten et al, 1998 a, b), and the recruitment and survival of gametophytes and young sporophytes (Wood, 1987 ;Graham, 1996), though uptake of ammonium and nitrate have also been addressed (Do$ hler, Hagmeier & David, 1995).…”

Section: mentioning

confidence: 99%

Effects of solar radiation on the endemic Mediterranean red alga Rissoella verruculosa: photosynthetic performance, pigment content and the activities of enzymes related to nutrient uptake

et al. 1998

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The effects of full‐spectrum solar radiation and of solar radiation deprived of total u.v. radiation (λ<395 nm) on the endemic Mediterranean red alga Rissoella verruculosa (Bertoloni) J. Agardh were studied in situ in early summer, from sunrise to sunset. Photosynthetic performance, pigment content and the activities of enzymes related to nutrient uptake, were monitored under both radiation conditions throughout a daylight period. The doses of solar radiation, measured on the day during which the experiments were carried out (24 June 1997), were 9228·25, 1109·70 and 13·03 kJ m−2 for PAR (λ=400–700 nm), u.v.‐A (λ=315–400 nm) and u.v.‐B (λ=280–315 nm), respectively. Under these conditions, a clear daily variation in photosynthetic performance was found. However, no significant differences were detected between the two radiation conditions. At noon, strong sunlight impaired O2 evolution by 75%, but complete recovery occurred during the afternoon, reaching similar values to those measured in the early morning. By contrast, photoinhibition of optimal quantum yield (Fv/Fm), and the relative electron transport rate was followed by only a slight recovery during the afternoon. The rate of photosynthesis in air (simulating emersion conditions), estimated by CO2 exchange, showed a negative balance at noon, which was accentuated in plants exposed to the full‐solar spectrum. Significant changes in the activities of nitrate reductase and carbonic anhydrase were found throughout the day under both radiation conditions. In thalli receiving solar radiation deprived of u.v., total CA activity decreased throughout the day. However, in thalli exposed to full‐spectrum solar radiation, the activity of the enzyme tended to increase in the afternoon, correlating with an increase in NR activity.

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“…When using PAM (pulse amplitude modulation) fluorescence measurements, deep-water benthic algae were most sensitive while intertidal algae were least affected. As in phytoplankton, the occurrence and induction by UV of screening pigments has been recorded in tropical red algae (23).…”

Section: Inhibitory Effects Of Solar Uv Radiationmentioning

confidence: 99%

Vertical Migration and Distribution of Primary Producers in Aquatic Ecosystems–The Effects of Enhanced Solar UVB

Häder¹

1997

Photochem & Photobiology

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Photoadaptive responses of the tropical red alga Eucheuma striatum Schmitz (Gigartinales) to ultra-violet radiation

Cited by 89 publications

References 15 publications

Effects of UV radiation on five marine microphytobenthic Wadden sea diatoms, isolated from the Solthörn tidal flat (Lower Saxony, southern North Sea) – Part II: changes in carbohydrate, amino acid and fatty acid composition

Effects of UV radiation on five marine microphytobenthic Wadden sea diatoms, isolated from the Solthörn tidal flat (Lower Saxony, southern North Sea) – Part II: changes in carbohydrate, amino acid and fatty acid composition

Effects of solar radiation on the endemic Mediterranean red alga Rissoella verruculosa: photosynthetic performance, pigment content and the activities of enzymes related to nutrient uptake

Vertical Migration and Distribution of Primary Producers in Aquatic Ecosystems–The Effects of Enhanced Solar UVB

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