Mechanisms of inorganic carbon acquisition in two estuarine Rhodophyceans: Bostrychia scorpioides (Hudson) ex Kützing Montagne and Catenella caespitosa (Withering) L. M. Irvine
| Autor: | Miriam Ruiz-Nieto, Raquel Carmona, F. Xavier Niell, José A. Fernández |
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| Rok vydání: | 2014 |
| Předmět: |
geography
Oxygenase geography.geographical_feature_category biology Range (biology) Ribulose-Bisphosphate Carboxylase Bicarbonate chemistry.chemical_element Plant physiology Estuary Cell Biology Plant Science General Medicine Carbon Dioxide Hydrogen-Ion Concentration Biochemistry Carbon chemistry.chemical_compound Total inorganic carbon chemistry Carbonic anhydrase Botany biology.protein |
| Zdroj: | Photosynthesis Research. 121:277-284 |
| ISSN: | 1573-5079 0166-8595 |
| DOI: | 10.1007/s11120-014-0003-y |
| Popis: | Marine macroalgae possess a range of mechanisms to increase the availability of CO2 for fixation by ribulose-1,5-bisphosphate carboxylase/oxygenase. Of these, possession of a periplasmic or external carbonic anhydrase and the ability to use bicarbonate ions is widely distributed. The mechanisms of carbon acquisition were studied in two estuarine red macroalgae Bostrychia scorpioides and Catenella caespitosa using a range of techniques. pH-drift and CO2-depletion experiments at constant pH suggested that CO2 is the main source of inorganic carbon in both species. Inhibitors indicated that internal and external carbonic anhydrase were present in both species. Inhibitors also suggested that uptake of bicarbonate is unlikely to be present (P |
| Databáze: | OpenAIRE |
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