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@article{369637, author = {Lízal, Pavel and Relichová, Jiřina}, article_location = {Copenhagen}, article_number = {1}, keywords = {methylation;repressor;mutants}, language = {eng}, issn = {0031-9317}, journal = {PHYSIOLOGIA PLANTARUM}, title = {The effect of day length, vernalization and DNA demethylation on the flowering time in Arabidopsis thaliana}, volume = {113}, year = {2001} }
TY - JOUR ID - 369637 AU - Lízal, Pavel - Relichová, Jiřina PY - 2001 TI - The effect of day length, vernalization and DNA demethylation on the flowering time in Arabidopsis thaliana JF - PHYSIOLOGIA PLANTARUM VL - 113 IS - 1 SP - 121 EP - 121 PB - Munksgaard SN - 00319317 KW - methylation;repressor;mutants N2 - We studied the effect of three factors on the induction of flowering in Arabidopsis thaliana, i.e. vernalization, day length and DNA demethylation. Seven natural late flowering genotypes and 13 late flowering mutants were used in the experiments. The effect of the vernalization and the short day (SD) was uniform in all genotypes used, resulting in shortening (vernalization) or extension of the period before the appearance of the first flower primordia. On the other hand, the effect of the demethylating agent (5-azacytidine [5-azaC]) was not uniform in the genotypes used. In all natural late genotypes (except Lu-1), the shortening of the flowering time (FT) after 5-azaC treatment was observed. On the contrary, only five mutants - dl, pm, M63, M73 and fca-1 - showed a shortening of the FT, while in the majority of the late flowering mutants, no significant response (earlier flowering) was found. The different response to the vernalization and demethylation treatment in late flowering mutants shows the possibility of two different pathways leading to the flowering, both of which are regulated by DNA demethylation. The different response of natural and induced late flowering genotypes after 5-azaC treatment shows that genes that play a role in flower development are of a different nature. ER -
LÍZAL, Pavel and Jiřina RELICHOVÁ. The effect of day length, vernalization and DNA demethylation on the flowering time in Arabidopsis thaliana. \textit{PHYSIOLOGIA PLANTARUM}. Copenhagen: Munksgaard, 2001, vol.~113, No~1, p.~121-127. ISSN~0031-9317.
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