Heterogeneity of cyanobacterial gas-vesicle volume and metabolic activity

被引:38
作者
Brookes, JD
Ganf, GG
Oliver, RL
机构
[1] Univ Adelaide, Dept Environm Biol, Adelaide, SA 5005, Australia
[2] Murray Darling Freshwater Res Ctr, CRC Freshwater Ecol, Albury, NSW 2640, Australia
关键词
D O I
10.1093/plankt/22.8.1579
中图分类号
Q17 [水生生物学];
学科分类号
071004 ;
摘要
The literature suggests that relative gas-vesicle volume and metabolic activity differ between individuals within natural populations of cyanobacteria. We demonstrate, using flow cytometry and fluorcscein diacetate (FDA) conversion rates, that individual relative gas-vesicle volumes differed by 6.7- and 4.6-fold, and individual cell photosynthetic rates ranged from 0.026 to 0.127 and from 0.075 to 2.415 fmol O-2 cell(-1) min(-1) within phosphorus-starved and phosphorus-replete Microcystis aeruginosa populations, respectively. The observation that there is considerable heterogeneity in gas-vesicle volume and cell metabolic activity in cultured populations suggests that this could also contribute to heterogeneity in buoyancy of field populations.
引用
收藏
页码:1579 / 1589
页数:11
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