Cytological events in explants of Arabidopsis thaliana during early callogenesis.

Autor:	A. Fras, J. Juchimiuk, D. Siwinska, J. Maluszynska
Předmět:	ARABIDOPSIS thaliana PLANT cell culture PLANT genetic engineering GENETIC polymorphisms
Zdroj:	Plant Cell Reports; Nov2007, Vol. 26 Issue 11, p1933-1939, 7p
Abstrakt:	Abstract  Leaf explants of diploid (2n = 2x = 10) and autotetraploid (2n = 4x = 20) plants of Arabidopsis thaliana ecotype Columbia were cytologically and cytogenetically analysed to determine the time and the mechanisms of the process of polyploidization. The first polyploid cells were observed after the third day of culture in both genotypes of explants. Polyploid cells were the result of pre-existing mixoploidy in explants of A. thaliana. Other factors such as endoreduplication, endomitosis, abnormal microtubules arrangement and DNA damage may have induced polyploidization during early stages of callogenesis. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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