Some special morphological features of Cylindrospermopsis raciborskii in batch and continuous cultures

Author： Shafik Hesham M.   Vörös Lajos   Sprőber Péter   Présing Mátyás   Kovács Attila W.  

Publisher： Springer Publishing Company

ISSN： 0018-8158

Source： Hydrobiologia, Vol.506, Iss.1, 2003-11, pp. : 163-167

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Abstract

Morphological characteristics of Cylindrospermopsis raciborskii were investigated in batch culture under P-starvation and in continuous cultures at two growth rates with different N forms. The species displayed an enormous morphological variability under controlled condition. In the P-starved batch culture very short and extreme morphology trichomes with conical or drop-shape heterocytes were formed. In continuous culture extremely long, twisted filaments were found near the maximum growth rate. Rarely, C. raciborskii formed intercalary heterocytes.

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