Summary
Flange cells are an unusual type of parenchyma cells with an open reticulate pattern of secondary wall thickenings. The cells superficially resemble tracheary elements but are otherwise fundamentally different. Flange cells were found in haustorial sucker tissue of the dwarf mistletoeKorthalsella. Such cells were previously unknown for a mistletoe, or other parasitic angiosperm. Flange cells are confined to the xylem of the sucker and occur as either diffuse aggregates amongst the ordinary parenchyma tissue lying between the tracts of vessels, or abut the vessels. Typical flange cells are absent at the parasite/host xylem interface. The cells contain a well differentiated protoplast, including chloroplasts with extensive granal stacks. Histochemical staining and fluorescence microscopy indicate lignification of the flange wall. In thin section, the flange wall is often stratified into dark and light staining layers. Flange cells inKorthalsella resemble contact cells, vessel associated cells and certain types of transfer cells reported in the literature. Based on morphological considerations, it is suggested that flange cells inKorthalsella are involved in absorption and transport between host and parasite. As host sap moves through the sucker apoplasm, substance might be selectively absorbed by the flange cell, before the remaining the sap passes into the vessels for long distance transport in the mistletoe.
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References
Benson M (1910) Root parasitism inExocarpus (with comparative notes on the haustoria ofThesium). Ann Bot 24: 667–677
Braun HJ (1970) Funktionelle Histologie der sekundären Sproßachse. I. Das Holz. Gebrüder Borntraeger, Berlin (Handbuch der Pflanzenanatomie, vol 9, part 1)
Browning AJ, Gunning BES (1977) An ultrastructural and cyto-chemical study of the wall-membrane apparatus of transfer cells using freeze-substitution. Protoplasma 93: 7–26
Catesson AM, Moreau M (1985) Secretory activities in vessel contact cells. Israel J Bot 34: 157–165
Calvin CL (1967) Anatomy of the endophytic system of the mistletoe,Phoradendron flavescens. Bot Gaz 128: 117–137
Chafe SC, Chauret G (1974) Cell wall structure in xylem parenchyma of trembling aspen. Protoplasma 80: 129–147
Coetzee J, Fineran BA (1987) The apoplastic continuum, nutrient absorption and plasmatubules in the dwarf mistletoeKorthalsella lindsayi (Viscaceae). Protoplasma 136: 145–153
— — (1989) Translocation of lysine from the hostMelicope simplex to the parasitic dwarf mistletoeKorthalsella lindsayi (Viscaceae). New Phytol 112: 377–381
Czaninski Y (1966) Aspects infrastructuraux de cellules contiguës aux vaisseaux dans le xylème deRobinia pseudoacacia. C R Acad Sc 262: 2336–2339
— (1968) Cellules oxalifères du xylème du Robinier (Robinia pseudoacacia). C R Acad Sc 267: 2319–2321
— (1972) Mise en évidence de cellules associees aux vaisseaux dans le xylème du Sycomore. J Microsc 13: 137–140
— (1973) Observations sur une nouvelle couche parietale dans les cellules associées aux vaisseaux du Robinier et du Sycomore. Protoplasma 77: 211–219
— (1977) Vessel-associated cells. IAWA Bull 1977/3: 51–55
— (1979) Cytochimie ultrastructurale des parois du xylème secondaire. Biol Cell 35: 97–102
Dörr I, Kollmann R (1976) Strukturelle Grundlagen des Parasitismus bei Orobranche. III. Die Differenzierung des Xylemanschlusses beiO. crenulata. Protoplasma 89: 235–249
Fineran BA (1985) Graniferous tracheary elements in the haustorium of root parasitic angiosperms. Bot Rev 51: 389–441
— (1987) A structural approach towards investigating transport systems between host and parasite, as exemplified by some mistletoes and root parasites. In: Weber HC, Forstreuter W (eds) Parasitic flowering plants. Proceedings 4th International Symposium on Parasitic Flowering Plants, Philipps University, Marburg, Federal Republic of Germany, pp 201–220
— (1994) Unique tracheary elements in the haustorium of parasitic angiosperms. In: Iqbal M (ed) Growth patterns in vascular plants. Dioscorides Press, Portland, OR, pp 162–182
— (1995) Green tissue within the haustorium of the dwarf mistletoeKorthalsella (Viscaceae). An ultrastructural comparison between chloroplasts of sucker and aerial stem tissue. Protoplasma 189: 216–228
—, Condon JM (1988) The stabilization of latex in laticifers of the Convolvulaceae: application of freezing methods for scanning electron microscopy. Can J Bot 66: 1217–1226
—, Juniper BE, Bullock S (1978) Graniferous tracheary elements in the haustorium of the Santalaceae. Planta 141: 29–32
Gunning BES (1977) Transfer cells and their roles in transport of solutes in plants. Sci Prog Oxford 64: 539–568
—, Pate JS (1969) “Transfer cells” — plant cells with wall ingrowths, specialized in relation to short distance transport of solutes — their occurrence, structure, and development. Protoplasma 68: 107–133
— (1974) Transfer cells. In: Robards AW (ed) Dynamic aspects of plant ultrastructure. McGraw-Hill, Maidenhead, pp 441–480
—, Steer M (1975) Ultrastructure and the biology of plant cells. Edward Arnold, London
—, Pate JS, Briarty LG (1968) Specialized “Transfer Cells” in minor veins of leaves and their possible significance in phloem translocation. J Cell Biol 37: C7–12
— —, Green LW (1970) Transfer cells in the vascular system of stems: taxonomy, association with nodes and structure. Protoplasma 71: 147–171
Kuijt J (1969) The biology of parasitic flowering plants. University of California Press, Berkeley
O'Brien TP, Zee SY (1971) Vascular transfer cells in the vegetative nodes of wheat. Aust J Biol Sci 24: 207–217
— —, Swift JG (1970) The occurrence of transfer cells in the vascular tissues of the coleoptilar node of wheat. Aust J Biol Sci 23: 709–712
Pate JS, Gunning BES (1969) Vascular transfer cells in angiosperm leaves. A taxonomic and morphological survey. Protoplasma 68: 135–156
—, True KC, Rasins E (1991) Xylem transport and storage of amino acids by SW Australian mistletoes and their hosts. J Exp Bot 42: 441–451
—, Woodall G, Jeschke WD, Stewart GR (1994) Root xylem trans port of amino acids in the root hemiparasitic shrubOlax phyllanthi (Labill) R. Br. (Olacaceae) and its multiple hosts. Plant Cell Environ 17: 1263–1273
Press MC (1989) Autotrophy and heterotrophy in root hemiparasites. Trees 4: 258–263
—, Graves JD, Stewart GR (1990) Physiology of the interaction of angiosperm parasites and their higher plant hosts. Plant Cell Environ 13: 91–104
Sauter JJ, Van Cleve B, Apel K (1988) Protein bodies in ray cells ofPopulus ×canadensis Moench “robusta”. Planta 173: 31–34
Stewart GR, Press MC (1990) The physiology and biochemistry of parasitic angiosperms. Annu Rev Plant Physiol Mol Biol 41: 127–151
Thiéry JP (1967) Mise en evidence des polysaccharides sur coupes fines en microscopie electronique. J Microsc 6: 987–1018
Zee SY, O'Brien TP (1970) A special type of tracheary element associated with “xylem discontinuity” in the floral axis of wheat. Aust J Biol Sci 23: 783–791
— — (1971) Vascular transfer cells in the wheat spikelet. Aust J Biol Sci 24: 35–49
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Dedicated to Prof. Dr. Rainer Kollmann on the occasion of his 65th birthday
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Fineran, B.A. Flange-type parenchyma cells: occurrence and structure in the haustorium of the dwarf mistletoeKorthalsella (Viscaceae). Protoplasma 194, 40–53 (1996). https://doi.org/10.1007/BF01273166
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DOI: https://doi.org/10.1007/BF01273166