Udział mikro rna w rozwoju generatywnym roślin*

• Authors: Paulina Glazińska , Jakub Bracha , Emilia Wilmowicz , Jan Kopcewicz

Title variants

EN

The involvement of micro RNA in generative development of plants.

• Languages of publication: PL EN

Abstracts

PL

Precyzyjna kontrola czasu zakwitania oraz rozwoju organów generatywnych jest niezbędna do sukcesu reprodukcyjnego roślin. Ostatnie lata wykazały, że jednym z czynników regulujących rozwój generatywny roślin są mikro RNA (miRNA). Mikro RNA to grupa cząsteczek długości około 21 nt o funkcjach regulatorowych. Zaangażowane są w proces wyciszania genów docelowych, polegający na inaktywacji ich ekspresji, u roślin zazwyczaj na poziomie transkrypcyjnym. W niniejszej pracy opisano udział pięciu miRNA: miR156, 159, 164, 167, i 172 w regulacji rozwoju generatywnego roślin. MiR156 poprzez promowanie degradacji transkryptów z rodziny SPL wpływa na przejście do generatywnej fazy rozwoju. MiR159 jest regulowanym przez gibereliny modulatorem aktywności białek GAMYB. MiR164 poprzez kontrolę obecności w poszczególnych komórkach mRNA genów CUC1 i CUC2 określa granice między elementami kwiatu. MiR167 i jego geny docelowe ARF6 oraz ARF8 związane są z rozwojem kwiatu. MiR172 jest komplementarny do mRNA genów z rodziny APETALA2 wpływających zarówno na proces indukcji kwitnienia jak i prawidłowe tworzenie kwiatu.

EN

Precise control of flowering time and generative organs development is essential for successful plants reproduction. Recent years showed that microRNA is one of the factors involved in regulation of generative development in plants. MicroRNA are 21 bp length regulatory molecules. They are involved in target genes silencing by inactivating they expression, mostly on transcriptional level in plants. The present article describes involvement of five miRNAs: miR156, 159, 164, 167 and 172 in generative development of plants. miR156 affects transition from vegetative to reproduction phase of development, by SPL transcripts degradation. miR159 works as a modulator of GAMYB protein activity. miR164 controls the presence of mRNA CUC1 and 2 genes in individual cells, hence defines the borders between flower elements. miR167 and its target genes ARF6 and ARF8 are involved in flower development. miR172 is complementary to the mRNA of genes from the APETALA2 family and affects on flower induction and development.

• Journal: Kosmos
• Year: 2011
• Volume: 60
• Issue: 1-2
• Pages: 141-152

Dates

published

2011

Contributors

author

Paulina Glazińska

• Zakład Fizjologii i Biologii Molekularnej Roślin, Instytut Biologii Ogólnej i Molekularnej, Uniwersytet Mikołaja Kopernika, Gagarina 9, 87-100 Toruń, Polska

author

Jakub Bracha

• Zakład Fizjologii i Biologii Molekularnej Roślin, Instytut Biologii Ogólnej i Molekularnej, Uniwersytet Mikołaja Kopernika, Gagarina 9, 87-100 Toruń, Polska

author

Emilia Wilmowicz

• Zakład Fizjologii i Biologii Molekularnej Roślin, Instytut Biologii Ogólnej i Molekularnej, Uniwersytet Mikołaja Kopernika, Gagarina 9, 87-100 Toruń, Polska

author

Jan Kopcewicz

• Zakład Fizjologii i Biologii Molekularnej Roślin, Instytut Biologii Ogólnej i Molekularnej, Uniwersytet Mikołaja Kopernika, Gagarina 9, 87-100 Toruń, Polska

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