{"refrec":{"BRefID":76913,"RR":"<b>Jones, J.I.</b> (2005). The metabolic cost of bicarbonate use in the submerged plant <i>Elodea nuttallii</i>. <i>Aquat. Bot. 83(1)</i>: 71-81. <a href=\"https://dx.doi.org/10.1016/j.aquabot.2005.05.002\" target=\"_blank\">https://dx.doi.org/10.1016/j.aquabot.2005.05.002</a>","BEntID":72507,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Aquat. Bot. 83(1)</i>: 71-81. <a href=\"https://dx.doi.org/10.1016/j.aquabot.2005.05.002\" target=\"_blank\">https://dx.doi.org/10.1016/j.aquabot.2005.05.002</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":1,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Jones, J.I.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Jones, J.I.","Englishabstract":"The aquatic plant <i>Elodea nuttallii</i> (Planch.) St. John has been shown to express plasticity in the source of inorganic carbon it uses for photosynthesis. An investigation was undertaken to determine what effect the switch from CO<sub>2</sub> to HCO<sub>3</sub><sup>-</sup> use had on the growth of <i>E. nuttallii.</i> Plants were grown under reduced CO<sub>2</sub> availability that favoured the switch, together with control plants (CO<sub>2</sub> at equilibrium with air) that continued to use CO<sub>2</sub> only. The extent to which both sets of plants could utilise HCO<sub>3</sub><sup>-</sup> was determined (as the ratio of oxygen evolution at pH 9 and 6.5), and several measures of growth were made. Although reduced CO<sub>2</sub> availability produced an increase in HCO<sub>3</sub><sup>-</sup> utilisation, no differences were found in the measured growth of the plants. Therefore, it was possible to estimate, from the difference between the estimated rate of photosynthesis of the plants utilising HCO<sub>3</sub><sup>-</sup> and those using CO<sub>2</sub> only, the approximate cost of constructing, maintaining and running the bicarbonate utilisation mechanism in this species as 69 µmol photons m<sup>-2</sup> s<sup>-1</sup>. This value can be used to estimate an irradiance of circa 80 µmol m<sup>-2</sup> s<sup>-1</sup> below which HCO<sub>3</sub><sup>-</sup> use would not be expected in this species, an irradiance commonly experienced by submerged macrophytes in the field.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"The metabolic cost of bicarbonate use in the submerged plant <i>Elodea nuttallii</i>","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-14 01:31:11.797129","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"aquatic plant; bicarbonate use; carbon dioxide; light; growth;macrophyte; photosynthesis; polar leaf; plasticity","OtherDescriptors":null,"Notes":null,"AnaPub":2005,"MonPub":null,"DateUpdate":"2020-10-15","DateCreate":"2005-10-03","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000231655900006","VABBcode":null,"OpenAcc":0},"refs":null,"anarec":{"AnaID":76913,"PubliDate":2005,"Pagination":"71-81","XtraPublOfAnaID":null,"ISBN":null,"Volume":"83","Issue":"1","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":42195,"SerRR":"Aquatic Botany. 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