Growth, N2 fixation and photosynthesis in a cyanobacterium, Trichodesmium sp., under Fe stress

被引：0
作者：
Fei-xue Fu
P.R.F. Bell
机构：
[1] The University of Queensland,Department of Chemical Engineering
来源：
Biotechnology Letters | 2003年 / 25卷
关键词：
Fe limitation; growth rate; N; fixation; photosynthesis;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Trichodesmium sp., isolated from the Great Barrier Reef lagoon, was cultured in artificial seawater media containing a range of Fe concentration. Fe additions stimulated growth, N2 fixation, cellular chlorophyll a content, light-saturated chlorophyll a-specific gross photosynthetic capacity (Pmchl a) and the dark respiration rate (Rdchl a). Cell yields only doubled for 9 nM Fe relative to zero added Fe, whereas N2 fixation increased 11-fold considerably for 450 nM Fe. The results suggest that N2 fixation of Trichodesmium is more sensitive to Fe limitation than are the cell yields.
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页码：645 / 649
页数：4
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