J4 ›› 2013, Vol. 12 ›› Issue (4): 48-50.

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A Study on the Growth and Some Physiological Characteristics of Microcystis aeruginosa Isolated from Erhai Lake

  

  1. 1. College of Public Health, Dali University, Dali, Yunnan 671000, China;
    2. Pre-clinical College, Dali University, Dali, Yunnan 671000, China
  • Received:2012-09-15 Revised:2012-10-05 Online:2013-04-15 Published:2013-04-15

Abstract:

Objective: To study on the growth law and some physiological characteristics of Microcystis aeruginosa isolated from Erhai lake. Methods: Purified Microcystis aeruginosa was separated with water droplets method and the spread plate method. Microscopic was used to count the density of algal cells;chlorophyll and carotenoid were extracted with 90% acetone and ELIASA determination of its content. Results: Microcystis aeruginosa cells density was in a linear relationship with OD665, R2 =0.993 1;algal cell growth rate in sixth days reached a maximum of 0.524;chlorophyll and carotenoid content increased gradually over time. Conclusion: This Microcystis aeruginosa growth is in line with the“S”shaped curve;cell density and absorbance is linearly related and the growth rate of the maximum on the sixth day.

Key words: Erhai lake, Microcystis aeruginosa, isolate, growth curve, chlorophyll a

CLC Number: