Effects of environmental factors on the extracellular release of photosynthetic products by scenedesmus quadricauda

Scenedesmus quadricauda에 의한 광합성 산물의 세포 외 배출에 미치는 환경요인의 영향

The effects of environmental factors on the extracellular release of organic carbon by Scenedesmus qudricauda were studied. The PER (percentage extracellular release) was greater at high temperature and at high concentration of nitrogen and phosphate. The PER variation according to the change of M/P ratio showed high values at each extreme N/P ratio. This result suggested that the limitation of nitrogen or phosphorous resulted in the accumulation of carbohydrates as photosynthetic products, and the products in high concentration were excreted through algal cell membrane.