FIND ARTICLE

GIBBERELLINS – PERCEPTION AND SIGNAL TRANSDUCTION IN PLANTS

Gibberellins (GAs), as one of the most important phytohormones, control different aspect of plant growth and development including seed germination, stem elongation and flower induction. Among more than a hundred and thirty GAs identified from plants, fungi and bacteria only a small number of them, such as GA1, GA3, GA4, GA5, GA6 and GA7, are thought to function as bioactive hormones. Therefore, many non-bioactive GAs exist in plants as precursors or deactivated metabolites.

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UBIQUITIN-MEDIATED PROTEOLYSIS OF PROTEINS IN REGULATION OF PLANT GROWTH AND DEVELOPMENT

In Arabidopsis thaliana more than 1300 genes (~5% of the proteome) encode components of the ubiquitin/26S proteasome pathway. Approximately 90% of these genes encode subunits of the E3 ubiquitin ligases, which confer substrate specificity to the ubiquitin/26S proteasome pathway. The plant E3 ubiquitin ligases comprise a large and diverse family of proteins or protein complexes containing a RING-finger, U-box domain or a HECT domain.

The Editorial Board
Andrzej Łukaszyk - przewodniczący, Zofia Bielańska-Osuchowska, Szczepan Biliński, Mieczysław Chorąży, Aleksander Koj, Włodzimierz Korochoda, Leszek Kuźnicki, Aleksandra Stojałowska, Lech Wojtczak

Editorial address:
Katedra i Zakład Histologii i Embriologii Uniwersytetu Medycznego w Poznaniu, ul. Święcickiego 6, 60-781 Poznań, tel. +48 61 8546453, fax. +48 61 8546440, email: mnowicki@ump.edu.pl

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