杜氏盐藻和亚心形扁藻在不同接种密度和氮浓度下的细胞群体生长

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Abstract

We investigated the colonial cell growth of marine economic microalgae,Dunaliella salina and Platymonas subcordiformis under different cell inoculation densities(10:0,7:3,5:5,3:7 and 0:10) and nitrogen concentrations(low nitrogen:1.4 mg·L^-1, medium nitrogen:14 mg·L^-1 and high nitrogen:140 mg·L^-1) by examining some parameters of algal cell density,biomass,chlorophyll a and protein content.The results indicated that colonial cell growth of these two algae increased with the increasing of nitrogen concentrations.Besides,cell growth of mixed-culture was superior to monoculture when at high and medium nitrogen concentrations; especially when they were cultured at a proportion of 7:3.For example,chlorophyll a content was increased by as high as 1.17(p<0.01) and 7.77 folds(p<0.01),and protein content was improved by 19.1%(p<0.05) and 195.3%(p<0.01),respectively.However,cell growth of mixed-culture was remarkably limited by nitrogen concentration when at low nitrogen concentration.

Key words： Dunaliella salina Platymonas subcordiformis mixed culture inoculation density nitrogen

Received: 25 August 2010

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	Articles by authors
	HUANG Wei-wei
	CAI Zhuo-ping
	XIAO Qun
	DUAN Shun-shan

Cite this article:

HUANG Wei-wei,CAI Zhuo-ping,XIAO Qun, et al. Colonial cell growth of Dunaliella salina and Platymonas subcordiformis under different inoculation density and nitrogen concentration[J]. , 2010, 29(4): 318-323.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2010/V29/I4/318

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