TY -JOUR
AU -Shao-Lun Liu
AU -Liang-Chi Wang and Wei-Lung Wang
TI -Inorganic Carbon Utilization of the Freshwater Red Alga Compsopogon coeruleus (Balbis) Montagne (Compsopogonaceae, Rhodophyta) Evaluated by in situ Measurement of 
Chlorophyll Fluorescence
PY -2004
DA -0000-00-00
JO -Taiwania
VL -49
IS -3
SP -209
EP -217
UR -https://taiwania.ntu.edu.tw/abstract/426
AB -To explore the inorganic carbon utilization of the freshwater red alga Compsopogon
coeruleus, photosynthetic rates in response to increasing of bicarbonate concentration, the addition of alkaline HEPES buffer (pH 8.8), acid HEPES buffer (pH 4.0) and the extracellular carbonic anhydrase inhibitor (acetazolamide, AZ), respectively, were examined in situ by using a submersible pulse amplitude modulated (PAM) fluorometer. Among the treatments, adding acid HEPES buffer significantly reduced photosynthetic rates of the alga, while others showed no effect. Accordingly, we concluded that C. coeruleus had less or no inorganic carbon (Ci) limitation in its natural habitat. The alga might have higher affinity for bicarbonate and directly uptake bicarbonate as main Ci source without the aid of extracellular carbonic anhydrase.
DO -10.6165/tai.2004.49(3).209