By Hans Du Buf, Micha M Bayer
First publication to house computerized diatom id. offers the mandatory history details touching on diatom examine, helpful for either diatomists and non-diatomists.
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Additional info for Automatic Diatom Identification (Series in Machine Perception & Artifical Intelligence)
6b), tripolar or multipolar outlines can thus be produced, and these shapes can be further modified through contractions of the protoplast within the expanded auxospore before the initial Figure 10. Raphid pennate diatoms, a: Parlibellus, with simple central raphe endings and a simple rib-stria system with round pores, b: Aneumastus, the central raphe endings are deflected and expanded, and the rib-stria system changes in linear density near the margin, c: Diploneis crabro, a highly complex valve structure, with different types of pore (overlying a chambered wall structure that is not shown) and twisted raphe endings, d: Gomphonema, with special areas of pores at the base of the valve, through which polysaccharide stalks are secreted.
However, during cleaning, the links between the valves and the girdle bands were weakened and the frustule usually fell apart, so that only the valves remained for study in many cases. e. classifications that are more accurate reflections of evolutionary relationships. g. , 1990). Very few significant advances have been achieved using the older approach, of studying valves by light microscopy, and this is tribute to the quality of the work done by earlier diatomists: they left little to be done.
Bergsdorf, C. and Sumper, M. (1996) Frustulins: domain conservation in a protein family associated with diatom cell walls. European J. of Biochemistry, Vol. 239, pp. 259-264. , Rachel, R. and Sumper, M. (1997) Characterization of a 200-kDa diatom protein that is specifically associated with a silica-based substructure of the cell wall. European J. of Biochemistry, Vol. 250, pp. 99-105. , Bergsdorf, C. and Sumper, M. (2000) Species-specific polyamines from diatoms control silica morphology. Proc.