Journal of East China Normal University(Natural Sc ›› 2006, Vol. 2006 ›› Issue (2): 58-62.

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Effects of Symbiont on Saline Tolerance and Isozymes of Host in Paramecium bursaria-Chlorella System(Chinese)

SUN Jun, ZHANG Ying, GU Fu-kang   

  1. School of Life Science, East China Normal University, Shanghai 200062,China
  • Received:2005-03-16 Revised:2005-06-09 Online:2006-03-25 Published:2006-03-25

Abstract: To further investigate the effect of symbiotic Chlorella on physiological process and metabolism of the host P. bursaria, NaCl or Pb(NO3)2 tolerance and 12 types of isozyme of Chlorella-containing P. bursaria（CCP） and recovered Chlorella-containing P. bursaria（RCCP） and Chlorella-free P. bursaria（CFP） were analyzed. The results showed that NaCl tolerance of CCP was similar to that of RCCP, different from that of CFP, and that Pb(NO3)2 tolerance and activity of isozymes of CFP were similar to those of RCCP. RCCP showed the transitional characteristics between CCP and CFP. Diverse composition and activity of isozymes of among the three samples indicated existence or symbiotic time of Chlorella could change the isozyme system of the host. Fewer composition and lower activity of isozyme in CCP probably implied that due to the symbiosis of Chlorella, isozyme system of the host degenerated in “P. bursaria - Chlorella” system.

Key words: Chlorella, symbiosis, saline tolerance, isozyme, Paramecium bursaria, Chlorella, symbiosis, saline tolerance, isozyme

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