J 2001

The effect of day length, vernalization and DNA demethylation on the flowering time in Arabidopsis thaliana

LÍZAL, Pavel a Jiřina RELICHOVÁ

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

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
Změněno: 12. 10. 2001 16:32, RNDr. Pavel Lízal, Ph.D.

Anotace

V originále

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
Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Genomy a jejich funkce