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1

Transfer cell wall architecture in secretory hairs of Utricularia intermedia traps

100%
Plachno B. J., Jankun A.
Acta Biologica Cracoviensia. Series Botanica
|
2004
|
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.
2

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

100%
Plachno B. J., Jankun A., Faber J.
Acta Biologica Cracoviensia. Series Botanica
|
2005
|
tom 47
|
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.
3

Vascular system within developing root nodules of Lupinus luteus L. Part 1. Juvenile stage

67%
Lotocka B.
Acta Biologica Cracoviensia. Series Botanica
|
2008
|
tom 50
|
nr 1
The ontogeny and (ultra)structure of vascular tissue in Lupinus luteus L. root nodules were studied by light and transmission electron microscopy in juvenile nodule primordia up to the 11th day after inoculation. Vascular meristem originated from centripetally dedifferentiated root cortical parenchyma, endodermis and pericycle. The vascular trace was formed between bacteroid tissue initials and the root stele. In the trace's proximal part, cambial strands connecting the vascular trace and root cambium were formed. In the distal part, non-anastomosing vascular bundles started differentiating from the trace at the end of the juvenile stage. In lupine, the formative stage of the indeterminate root nodule vascular system was shown to be unique within the legumes.
4

Vascular system within developing root nodules of Lupinus luteus L. Part 2. Differentiated nodules

67%
Lotocka B. B.
Acta Biologica Cracoviensia. Series Botanica
|
2008
|
tom 50
|
nr 1
The development and (ultra)structure of vascular tissue was studied in Lupinus luteus L. mature root nodules 25 and 60 days after inoculation. In the proximal part of the nodule vascular trace, extensive growth took place to match the secondary growth of the root. Development of bacteroid and vascular tissues was correlated. The non-anastomosing nodule vascular bundles elongated and branched due to the activity of nodule lateral meristems, thus forming an extensive vascular network within deep lobes of bacteroid tissue. The vascular trace and vascular bundles differed mainly in the location and ultrastructure of transfer cells and parenchymatous cells, in which the inner membrane of the nuclear envelope formed tubular invaginations within the dense chromatin. Development of the vascular system in the collar root nodule of lupine differed from that of cylindrical indeterminate nodules.
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