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| Interactive effects of blue light and water turbulence on the growth of the green macroalga Ulva australis (Chlorophyta) Lee, H.; Depuydt, S.; Shin, K.; De Saeger, J.; Han, T.; Park, J. (2024). Interactive effects of blue light and water turbulence on the growth of the green macroalga Ulva australis (Chlorophyta). Plants-Basel 13(2): 266. https://dx.doi.org/10.3390/plants13020266
In: Plants-Basel. MDPI AG: Basel. e-ISSN 2223-7747, meer
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| Abstract |
Macroalgal growth and yield are key to sustainable aquaculture. Although light and water turbulence are two important factors that affect algal productivity, research on their interaction is limited. Therefore, in this study, we investigated the effects of different wavelengths of light and the presence or absence of water turbulence on the growth of the green macroalga Ulva australis. Water turbulence was found to enhance the growth of U. australis irrespective of photosynthetic performance, but only in blue light cultures. The quantum dose of blue light required to induce 50% growth promotion was 1.02 mol m−2, which is comparable to the reported values for cryptochrome-mediated effects in other macroalgae. The combined effect of blue light and water turbulence led to the accumulation of photosynthesis-related proteins that support plastid differentiation and facilitate efficient photosynthesis and growth. Our findings thus highlight the potential of harnessing blue light and water turbulence to maximise macroalgal cultivation for sustainable and profitable algal aquaculture. |
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