{"refrec":{"BRefID":302040,"RR":"<b>Olischläger, M.; Wiencke, C.</b> (2013). Ocean acidification alleviates low-temperature effects on growth and photosynthesis of the red alga <i>Neosiphonia harveyi</i> (Rhodophyta). <i>J. Exp. Bot. 64(18)</i>: 5587-5597. <a href=\"https://dx.doi.org/10.1093/jxb/ert329\" target=\"_blank\">https://dx.doi.org/10.1093/jxb/ert329</a>","BEntID":294281,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>J. Exp. Bot. 64(18)</i>: 5587-5597. <a href=\"https://dx.doi.org/10.1093/jxb/ert329\" target=\"_blank\">https://dx.doi.org/10.1093/jxb/ert329</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Olischläger, M.; Wiencke, C.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Olischläger, M.; Wiencke, C.","Englishabstract":"This study aimed to examine interactive effects between ocean acidification and temperature on the photosynthetic and growth performance of <i>Neosiphonia harveyi. N. harveyi</i> was cultivated at 10 and 17.5 °C at present (~380 µatm), expected future (~800 µatm), and high (~1500 µatm) pCO<sub>2</sub>. Chlorophyll a fluorescence, net photosynthesis, and growth were measured. The state of the carbon-concentrating mechanism (CCM) was examined by pH-drift experiments (with algae cultivated at 10 °C only) using ethoxyzolamide, an inhibitor of external and internal carbonic anhydrases (exCA and intCA, respectively). Furthermore, the inhibitory effect of acetazolamide (an inhibitor of exCA) and Tris (an inhibitor of the acidification of the diffusive boundary layer) on net photosynthesis was measured at both temperatures. Temperature affected photosynthesis (in terms of photosynthetic efficiency, light saturation point, and net photosynthesis) and growth at present pCO<sub>2</sub>, but these effects decreased with increasing pCO<sub>2</sub>. The relevance of the CCM decreased at 10 °C. A pCO<sub>2</sub> effect on the CCM could only be shown if intCA and exCA were inhibited. The experiments demonstrate for the first time interactions between ocean acidification and temperature on the performance of a non-calcifying macroalga and show that the effects of low temperature on photosynthesis can be alleviated by increasing pCO<sub>2</sub>. The findings indicate that the carbon acquisition mediated by exCA and acidification of the diffusive boundary layer decrease at low temperatures but are not affected by the cultivation level of pCO<sub>2</sub>, whereas the activity of intCA is affected by pCO<sub>2</sub>. Ecologically, the findings suggest that ocean acidification might affect the biogeographical distribution of <i>N. harveyi</i>.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Ocean acidification alleviates low-temperature effects on growth and photosynthesis of the red alga <i>Neosiphonia harveyi</i> (Rhodophyta)","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-06 01:33:52.924948","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Carbonic anhydrase; CCM; climate change; CO2; DIC; distribution; macroalgae; photosynthesis","OtherDescriptors":null,"Notes":null,"AnaPub":2013,"MonPub":null,"DateUpdate":"2018-10-15","DateCreate":"2018-10-15","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000329135600013","VABBcode":null,"OpenAcc":0,"DOI":"10.1093/jxb/ert329"},"refs":null,"anarec":{"AnaID":302040,"PubliDate":2013,"Pagination":"5587-5597","XtraPublOfAnaID":null,"ISBN":null,"Volume":"64","Issue":"18","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43228,"SerRR":"Journal of experimental botany. Society for Experimental BiologyOxford: London.  ISSN 0022-0957; e-ISSN 1460-2431","StandardTitleSer":"Journal of experimental botany","ISSN":"0022-0957","AbbrevSer":"J. Exp. 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