Polyploidization in the suspensor of Triglochin palustre l. [Juncaginaceae]

• Autorzy: Kozieradzka-Kiszkurno M. , Swierczynska J. , Bohdanowicz J.
• Języki publikacji: EN

Abstrakty

EN

Differentiation of the suspensor basal cell was studied in Triglochin palustre (2n = 24). The zygote divides into the smaller apical cell and the bigger basal cell, which becomes the basal cell of the suspensor. The nuclear DNA content of the suspensor basal cell attains a high degree of ploidy, up to 256C. Nuclei with the highest ploidy levels of 128C and 256C were observed in mature basal cells (from 50- to 500-celled embryos). As a result of polyploidization the volume of the nucleus increased and changes in the chromatin structure of polyploid nuclei were noted. Endochromocenters at middle ploidy level and bundle-like aggregations of chromatin at the highest ploidy levels were found. Rhythmic enlargement of the DNA content and nuclear volume of the basal cell, as well as the characteristic structure of its chromatin, point to endoreduplication as the mechanism of polyploidization in the suspensor.

Słowa kluczowe

EN

DNA content; endoreduplication; DNA cytophotometry; Triglochin palustre; suspensor; Juncaginaceae; polyploidization; basal cell

• Wydawca: -
• Czasopismo: Acta Biologica Cracoviensia. Series Botanica
• Rocznik: 2002
• Tom: 44
• Opis fizyczny: p.189-193,fig.,ref.

Twórcy

autor

Kozieradzka-Kiszkurno M.

• University of Gdansk, Kladki 24, 80-822 Gdansk, Poland

autor

Swierczynska J.

autor

Bohdanowicz J.

Bibliografia

• Avanzi S, Cionini PG, and D’amato F. 1970. Cytochemical and autoradiographic analyses on the embryo suspensor cells of Phaseolus coccineus. Caryologia 23: 605-638.
• Bohdanowicz J. 1973. Karyological anatomy of the suspensor in Alisma L. I. Alisma plantago-aquatica L. Acta Biologica Cracoviensia Series Botanica 16: 235-248.
• Bohdanowicz J. 1987. Alisma embryogenesis: the development and ultrastructure of the suspensor. Protoplasma 137: 71- 83.
• Brodsky VYA, and Uryvaeva JV. 1985. Genome multiplication in growth and development. Biology of polyploid and polytene cells. Cambridge University Press, Cambridge.
• Corsi G. 1972. The suspensor of Eruca sativa Miller (Cruciferae) during embryogenesis in vitro. Giornale Botanico Italiano 106: 41-54.
• Cremonini R, and Cionini PG. 1977. Extra DNA synthesis in embryo suspensor cells of Phaseolus coccineus. Protoplasma 91: 303-313.
• D’amato F. 1989. Polyploidy in cell differentiation. Caryologia 42: 183-211.
• Hasitchka-Jenschke G. 1959. Bemerkenswerte Kemstrukturen im Endosperm und im Suspensor zweier Helobiae. Österreichische Botanische Zeitschrift 106: 301-314.
• Kozieradzka-Kiszkurno M, and Bohdanowicz J. 2000. Ultrastructure of the suspensor in Triglochin palustre L. (Juncaginaceae). Acía Biologica Cracoviensia Series Botanica 42 suppl. 1: 24.
• Łuszczek D, Świerczyńska J, and Bohdanowicz J. 2000. Polyploidization of suspensor basal cell in Triglochin maritimum L. (Juncaginaceae). Acta Biologica Cracoviensia Series Botanica 42/1: 131-137.
• Maheshwari P. 1950. An introduction to the embryology of Angiosperms. McGraw-Hill, New York, Toronto, London.
• Nagl W. 1962. Über Endopoliploide, Restitutionskernbildung und Kernstrukturen im Suspensor von Angiospermen und einer Gymnosperme. Österreichische Botanische Zeitschrift 109: 431-494.
• Nagl W. 1970. Inhibition of polytene chromosome formation in Phaseolus by polyploid mitoses. Cytologia 35: 252-258.
• Nagl W. 1974. The Phaseolus suspensor and its polytene chromosomes. Zeitschrift für Pflanzenphysiologie 73: 1-44.
• Nagl W. 1990. Polyploidy in differentiation and evolution. International Journal of Cell Cloning 8: 216-223.
• Newcomb W, and Fowke LC. 1974. Stellaria media embryogenesis: the development and ultrastructure of the suspensor. Canadian Journal of Botany 52: 607-614.
• Schulz SR, and Jensen WA. 1969. Capsella embryogenesis: The suspensor and the basal cell. Protoplasma 67: 139-163.
• Pritchard HN. 1964. A cytochemical study of embryo development in Stellaria media. American Journal of Botany 55: 472-479.
• Skalińska M, Piotrowicz M, and Sokołowska-Kulczycka A. 1961. Further additions to chromosome numbers of Polish Angiosperms. Acta Societatis Botanicorum Poloniae 30: 463-489.
• Titz W. 1965. Vergleichende Untersuchungen ber den Grad der somatischen Polyploidie an der naheverwandten diploiden und polyploiden Sippen einschliesslich der Cytologie von Antipoden. Österreichische Botanische Zeitschrift 112:101-172.