{"refrec":{"BRefID":25881,"RR":"<b>Maberly, S.; Madsen, T.V.</b> (2002). Use of bicarbonate ions as a source of carbon in photosynthesis by <i>Callitriche hermaphroditica</i>. <i>Aquat. Bot. 73(1)</i>: 1-7. <a href=\"https://dx.doi.org/10.1016/S0304-3770(01)00229-7\" target=\"_blank\">https://dx.doi.org/10.1016/S0304-3770(01)00229-7</a>","BEntID":25881,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Aquat. Bot. 73(1)</i>: 1-7. <a href=\"https://dx.doi.org/10.1016/S0304-3770(01)00229-7\" target=\"_blank\">https://dx.doi.org/10.1016/S0304-3770(01)00229-7</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Maberly, S.; Madsen, T.V.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Maberly, S.; Madsen, T.V.","Englishabstract":"Previous studies on four amphibious species of <i>Callitriche</i> have shown photosynthesis to be restricted to CO<sub>2</sub> as an external carbon source. In contrast, we found that <i>C. hermaphroditica</i>, an obligately submerged species, is able to use bicarbonate ions in addition to CO<sub>2</sub> as an external source of inorganic carbon for photosynthesis. In pH-drift experiments, the final concentration of CO<sub>2</sub> was driven below 1µmol CO<sub>2l</sub>1<sup>-1</sup> (0.01-0.07µmol 1<sup>-1</sup> for at range of alkalinities) and rates of carbon uptake were around 400µmol carbon g <sup>-1</sup> DW h<sup>-1</sup> at an essentially zero CO<sub>2</sub> concentration at high alkalinity. Rates of photosynthesis, as oxygen evolution, increased with the concentration of bicarbonate and exceeded the CO<sup>2</sup>-dependent rate by up to 2.2- to 2.8-fold. In addition to underwater pollination and obligate submersion, the physiological feature of bicarbonate use is another indication of the greater reliance of this species to life in water and may be a further character that separates the section <i>Pseudocallitriche</i> from the <i>Eucallitriche</i>.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Use of bicarbonate ions as a source of carbon in photosynthesis by <i>Callitriche hermaphroditica</i>","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-04-17 01:31:26.065842","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":"CO<sub>2</sub>; <i>Callitriche hermaphroditica</i>; Submerged macrophyte; Amphibious","Notes":null,"AnaPub":2002,"MonPub":null,"DateUpdate":"2002-07-22","DateCreate":"2002-07-19","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000175126900001","VABBcode":null,"OpenAcc":0,"DOI":"10.1016/S0304-3770(01)00229-7"},"refs":null,"anarec":{"AnaID":25881,"PubliDate":2002,"Pagination":"1-7","XtraPublOfAnaID":null,"ISBN":null,"Volume":"73","Issue":"1","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":42195,"SerRR":"Aquatic Botany. 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