Physiological Responses of the Mediterranean Subtidal Alga Peyssonnelia squamaria to Elevated CO2
The ecological consequences of ocean acidification are unclear due to varying physiological properties of macroalgae and species-specific responses. Therefore, in the present study, we used a laboratory culture experiment to analyse the eco-physiological responses of the Mediterranean subtidal red alga Peyssonnelia squamaria to CO2-induced lower pH. Our results showed an increase in the photosynthetic performance and growth rate of P. squamaria, despite the reduction in CaCO3 content in the low pH treatment. According to our results, we believe that samples exposed to elevated CO2 could be regulated own nitrogen metabolism to support increased growth rate and it may be down-regulated nitrate uptake. As a result, we hypothesize that P. squamaria may benefit from ocean acidification.
Keywordsocean acidification Peyssonnelia photosynthesis growth nitrate reductase
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- Beardal J, Beer S, Raven JA (1998) Biodiversity of marine plants in an era of climate change: some predictions based on physiological performance. Bot Mar 41:113–123Google Scholar
- Ciais P, Sabine C (2013) Carbon and other biogeochemical cycles. In: Stocker TF, Qin D, Plattner G-K, Tignor M, Allen SK, Boschung J, Nauels A, Xia Y, Bex V, Midgley PM (eds) Climate Change 2013: the physical science basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, pp 465–570Google Scholar
- Falkowski PG, Raven JA (2007) Aquatic photosynthesis. Princeton University Press, Princeton, 484 pGoogle Scholar
- Gordillo FJL, Xavier N, Figueroa FL (2001) Non-photosynthetic enhancement of growth by high CO2 level in the nitrophilic seaweed Ulva rigida C. Agardh (Chlorophyta). Planta 213:64–70Google Scholar
- IPCC (2014) Climate Change 2014: synthesis report. Contribution of Working Groups I, II and III to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change. IPCC, Geneva, 151 pGoogle Scholar
- Linares C, Vidal M, Canals M, Kersting DK, Amblas D, Aspillaga E, Cebrián E, Delgado-Huertas A, Díaz D, Garrabou J, Hereu B, Navarro L, Teixidó N, Ballesteros E (2015) Persistent natural acidification drives major distribution shifts in marine benthic ecosystems. P Roy Soc B-Biol Sci 282:20150587CrossRefGoogle Scholar
- Orr JC, Fabry VJ, Aumont O, Bopp L, Doney SC, Feely RA, Gnanadesikan A, Gruber N, Ishida A, Joos F, Key RM, Lindsay K, Maier-Reimer E, Matear R, Monfray P, Mouchet A, Najjar RG, Plattner G-K, Rodgers KB, Sabine CL, Sarmiento JL, Schlitzer R, Slater RD, Totterdell IJ, Weirig M-F, Yamanaka Y, Yool A (2005) Anthropogenic ocean acidification over the twenty-first century and its impact on calcifying organisms. Nature 437(29): 681–686CrossRefGoogle Scholar
- Provasoli L (1968) Media and prospects for the cultivation of marine algae. In: Proceedings of the US-Japan Conference, Japanese Society of Plant Physiology, Hakone, 12–15 September 1966, pp 63–75Google Scholar
- Snell FT, Snell CT (1949) Colorimetric methods of analysis, vol 2, 3rd edn.Google Scholar