Podrobný výpis o publikaci

LÍZAL, Pavel a Jiřina RELICHOVÁ. The effect of day length, vernalization and DNA demethylation on the flowering time in Arabidopsis thaliana. PHYSIOLOGIA PLANTARUM. Copenhagen: Munksgaard, 2001, roč. 113, č. 1, s. 121-127. ISSN 0031-9317.

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Základní údaje
Originální název	The effect of day length, vernalization and DNA demethylation on the flowering time in Arabidopsis thaliana
Autoři	LÍZAL, Pavel a Jiřina RELICHOVÁ.
Vydání	PHYSIOLOGIA PLANTARUM, Copenhagen, Munksgaard, 2001, 0031-9317.

Další údaje
Originální jazyk	angličtina
Typ výsledku	Článek v odborném periodiku
Obor	Genetika a molekulární biologie
Stát vydavatele	Dánsko
Utajení	není předmětem státního či obchodního tajemství
Impakt faktor	Impact factor: 1.760
Kód RIV	RIV/00216224:14310/01:00004458
Organizační jednotka	Přírodovědecká fakulta
UT WoS	000170721000016
Klíčová slova anglicky	methylation;repressor;mutants
Štítky	methylation, mutants, repressor
Změnil	Změnil: RNDr. Pavel Lízal, Ph.D., učo 2538. Změněno: 12. 10. 2001 16:32.

Anotace
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.

Anotace

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.

Návaznosti
MSM 143100008, záměr	Název: Genomy a jejich funkce
MSM 143100008, záměr	Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Genomy a jejich funkce