Photosynthetic inorganic carbon assimilation by prasiola stipitata (Prasiolales, chlorophyta) under emersed and submersed conditions: Relationship to the taxonomy of prasiola

TY - JOUR

T1 - Photosynthetic inorganic carbon assimilation by prasiola stipitata (Prasiolales, chlorophyta) under emersed and submersed conditions

T2 - Relationship to the taxonomy of prasiola

AU - Raven, John A.

AU - Johnston, Andrew M.

PY - 1991/9/1

Y1 - 1991/9/1

N2 - Material from a marine littoral fringe population of Prasiola stipitata exhibited inorganic C saturation of photosynthesis when emersed but hydrated in air (35 Pa CO2) and when submersed in sea-water (2 mol m-3 inorganic C, pH 8.0). This high affinity for inorganic C was accompanied by a low CO2 compensation concentration and the capacity to use external HCO3 −. No CAM-like behaviour was exhibited in either emersed or submersed specimens. The δ13C of the alga was -21-18%. These characteristics resemble those of several other high-intertidal algae and of a high-intertidal cyanobacterial lichen which have been tested. The inorganic C metabolism processes examined do not distinguish between the Ulvophyceae and the Pleurastrophyceae as the most appropriate location for Prasiola, although chlorophyll chlorophyll b ratios (including measurements on three pleurastrophycean supratidal lichens) and polyol occurrence favour the Pleurastrophyceae as the higher taxon to which the Prasiolales should be referred.

AB - Material from a marine littoral fringe population of Prasiola stipitata exhibited inorganic C saturation of photosynthesis when emersed but hydrated in air (35 Pa CO2) and when submersed in sea-water (2 mol m-3 inorganic C, pH 8.0). This high affinity for inorganic C was accompanied by a low CO2 compensation concentration and the capacity to use external HCO3 −. No CAM-like behaviour was exhibited in either emersed or submersed specimens. The δ13C of the alga was -21-18%. These characteristics resemble those of several other high-intertidal algae and of a high-intertidal cyanobacterial lichen which have been tested. The inorganic C metabolism processes examined do not distinguish between the Ulvophyceae and the Pleurastrophyceae as the most appropriate location for Prasiola, although chlorophyll chlorophyll b ratios (including measurements on three pleurastrophycean supratidal lichens) and polyol occurrence favour the Pleurastrophyceae as the higher taxon to which the Prasiolales should be referred.

UR - https://www.scopus.com/pages/publications/84953950805

U2 - 10.1080/00071619100650221

DO - 10.1080/00071619100650221

M3 - Article

AN - SCOPUS:84953950805

SN - 0007-1617

VL - 26

SP - 247

EP - 257

JO - British Phycological Journal

JF - British Phycological Journal

IS - 3

ER -