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Development of the wall labyrinth in pavement epithelium hairs of some Utricularia species

100%

Plachno B. J. , Jankun A. , Faber J.

nr 1

Sodium hypochlorite-digested material and scanning electron microscopy was used to study the morphology of wall ingrowths in pavement epithelium hairs of Utricularia species from the primitive section Pleiochasia (U. volubilis) and the advanced section Utricularia (U. stygia, U. intermedia). Wall ingrowths were reticulate-type in all examined species. Wall ingrowth development started with the formation of small papillae, which later lengthened and eventually fused and branched, forming a network. The sequence of wall deposition in plant hairs is given for the first time with SEM. The wall labyrinth in transfer cells of pavement epithelium hairs was found to be far from static. Different stages of wall ingrowth development were observed within the same cell.

Chrysophycean stomatocysts associated with the carnivorous plants (genus Utricularia) from Jeleniak-Mikuliny Nature Reserve

84%

Wolowski K. , Piatek J. , Plachno B. J.

nr 4

Water trophicity of Utricularia microhabitats identified by means of SOFM as a tool in ecological modeling

67%

Kosiba P. , Stankiewicz A.

tom 76

nr 3

The study objects were 48 microhabitats of five Utricularia species in Lower and Upper Silesia (POLAND). The aim of the paper was to focus on application of the Self-Organizing Feature Map in assessment of water trophicity in Utricularia microhabitats, and to describe how SOFM can be used for the study of ecological subjects. This method was compared with the hierarchical tree plot of cluster analysis to check whether this techniques give similar results. In effect, both topological map of SOFM and dendrogram of cluster analysis show differences between Utricularia species microhabitats in respect of water quality, from eutrophic for U. vulgaris to dystrophic for U. minor and U. intermedia. The used methods give similar results and constitute a validation of the SOFM method in this type of studies.