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Transfer cell wall architecture in secretory hairs of Utricularia intermedia traps

100%

Plachno B. J. , Jankun A.

tom 46

193-200

This paper discusses transfer cell wall deposition and architecture in various trap hairs of the carnivorous plant Utricularia intermedia. Scanning electron microscopy showed that the middle cells of both internal hairs and pavement epithelium hairs have reticulate-type wall ingrowths. The wall ingrowths of the middle cell of both quadrifids and bifids are very well developed. However, in middle cells of pavement epithelium hairs the level of development of wall ingrowths is not uniform. The presence of ruptured cuticles and wall ingrowths in these hairs suggests that water is transported by the pavement epithelium hairs from the trap to the external environment.

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