Acclimation of Haslea ostrearia to light of different spectral qualities - confirmation of 'chromatic adaptation' in diatoms

Journal of Photochemistry and Photobiology. B, Biology
Jean-Luc MougetGérard Tremblin

Abstract

The marine diatom Haslea ostrearia was cultured under light of different qualities, white (WL), blue (BL), green (GL), yellow (YL), red (RL), and far-red (FRL) and at two irradiance levels, low and high (20 and 100 micromolphotonsm(-2)s(-1), respectively). The effects of the different light regimes were studied on growth, pigment content, and photosynthesis, estimated by the modulated fluorescence of chlorophyll, as relative electron transport rate (rETR). For all the light qualities studied, growth rates were higher at high irradiance. Compared to the corresponding WL controls, growth was higher in BL and lower in YL at low irradiance, and lower in YL and GL at high irradiance. Except for YL, almost all the pigment contents of the cells were lower at high irradiance. At low irradiance, cell pigment contents (chlorophyll a and c, fucoxanthin) and pigment ratios (in function of chlorophyll a) were lower in YL, RL, and FRL. Whatever the irradiance level, the maximum PSII quantum efficiency (F(v)/F(m) remained almost constant for WL, BL, and GL. Other fluorescence parameters (photochemical quenching, rETR(max), and alpha, the maximum light utilization coefficient) were lower in GL, YL, RL, and FRL, at low irradiance. Although not ...Continue Reading

References

Apr 1, 1977·Journal of Bacteriology·N Tandeau de Marsac
Dec 1, 1974·Oecologia·Warren L WebbDuane Starr

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Citations

Nov 26, 2008·Photomedicine and Laser Surgery·Ariya SaraswathyV P Mahadevan Pillai
May 8, 2015·World Journal of Microbiology & Biotechnology·Firouz AbbasianRavi Naidu
Jun 3, 2009·FEMS Microbiology Ecology·Jean-Luc MougetNickolai A Davidovich
May 21, 2016·Environmental Microbiology·José L GarridoFrancisco Rodríguez
Dec 27, 2019·Journal of Phycology·Kristin M Heidenreich, Tammi L Richardson
Dec 5, 2006·Angewandte Chemie·Jochen Mattay
Dec 2, 2020·Bioresource Technology·Fengzheng GaoMaria J Barbosa

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