Strukturver�nderungen endopolyploider Ruhekerne im Zusammenhang mit wechselnder B�ndelung der Tochterchromosomen und karyologisch-anatomische Untersuchungen an Sukkulenten

Czeika, G.

doi:10.1007/bf01290134

Cited by 26 publications

(10 citation statements)

References 19 publications

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“…(14,15,21,22) Among 15 succulents investigated, only 4 species revealed higher ploidy levels than 4C in epidermal cells. (15) In Arabidopsis thaliana, the ploidy level of epidermal pavement cells range from 2C to 8C in stems and from 2C to 16C in leaves. (9) Interestingly, the guard cells of the stomata seem to remain exclusively in 2C in endopolyploid species.…”

Section: Endopolyploidization Of Epidermal Cellsmentioning

confidence: 96%

“…(40) The endopolyploidization of mesophyll cells of the succulent leaves of Othonna crassifolia (Asteraceae) decreases towards the epidermis. (15) …”

Section: Endopolyploidy In Fruitsmentioning

confidence: 97%

“…(9) Interestingly, the guard cells of the stomata seem to remain exclusively in 2C in endopolyploid species. (9,12,15,41) A decrease in endopolyploidy has been found towards stomata in the epidermal pavement cells of Portulaca grandiflora, Anacampseros filamentosa (both Portulacaceae) (15) and Arabidopsis thaliana.…”

Section: Endopolyploidization Of Epidermal Cellsmentioning

confidence: 98%

“…May be higher in the pith than in the cortex (14,15) , higher in the cortex than in the epidermis and in sub-epidermal cells (14) , and higher in nodes than in internodes (12,38) ; companion cells generally remain in 2C (14) Leaf…”

Section: Stemmentioning

confidence: 98%

“…The endopolyploidy level is higher for pith cells than for cortex cells. (14,15) Generally, epidermal pavement cells and often the first two to three subepidermal cell layers remain in 2C. (14) In Vicia faba (Fabaceae) (38) and Zebrina purpusii (Commelinaceae), (12) more endopolyploid cells are found in the nodes than in midinternodes.…”

Section: Endopolyploidy In Fruitsmentioning

confidence: 99%

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Endopolyploidy in seed plants

Barow¹

2006

Bioessays

167

149

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Two main attempts have been suggested for the biological significance of endopolyploidy: (i) provision of high DNA amounts to support high synthetic demands in certain cells and (ii) compensation for a lack of nuclear DNA in species with small genomes. However, in seed plants, the positive correlation between DNA content and cell volume of endopolyploid cells suggests other possibilities. Cell size paralleled by the endopolyploidy level has an impact on growth and development. Endopolyploidy levels in turn are characteristic for a given species and even families, reflecting the adaptation to certain habitats during phylogeny. Furthermore, endopolyploidy levels vary to some degree between individuals of one species in response to different environmental conditions. In addition, endopolyploidy differs between different tissues suggests that a certain cell size is advantageous for a given cell function. This article reviews these findings and discusses more conclusive possible functions of endopolyploidy.

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Section: Endopolyploidization Of Epidermal Cellsmentioning

confidence: 96%

“…(40) The endopolyploidization of mesophyll cells of the succulent leaves of Othonna crassifolia (Asteraceae) decreases towards the epidermis. (15) …”

Section: Endopolyploidy In Fruitsmentioning

confidence: 97%