ミカヅキモClosterium aciculare var. subpronumの培養と増殖

概要

論文の詳細を見る
We have isolated a green alga, Closterium aciculare var. subpronum, which often becomes dominant in Lake Biwa early in summer, and have investigated the growth features of this alga under the condition of unialgal culture. We adopted the total chlorophyll (chlorophyll a and b) as an indicator of algal mass, and revealed following properties: 1) The optimum temperature is about 20℃ judging from the growth rate of the exponential phase and the final yield. 2) The intensity of illuimination for the algal growth becomes saturated with 2,000 luxes. 3) The optimum pH of the growth medium is about 7. 5. 4) This alga can use ammonium as a nitrogen source, but cannot use nitrate. The optimum concentration of nitrogen (NH4-N, shown by nitrogen weight) is about 8.8 mg/1. The excess of nitrogen in the growth medium is inhibitoty. The shortage decreases the final yield. 5) The optimum concentration of phosphorus (PO4-P, shown by phosphorus weight) is 0.3-30mg/1. These results are discussed in comparison with the growth feature of Pediastrum biwae and Staurastrum dorsidentiferum var. ornatum which have been already elucidated.
滋賀大学の論文
1988-11-21