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Plant molecular biology is the study of the molecular basis of plant life. It is particularly concerned with the processes by which the information encoded in the genome is manifested as structures, processes and behaviours.
A global analysis of translation efficiency and RNA accumulation revealed that microRNAs in the unicellular green alga Chlamydomonas regulate target gene expression via RNA destabilization and translational repression like land plants and metazoans, yet in a different way.
Regulation of epigenetic factors through their recruitment to specific genomic regions is still poorly understood. A recent study demonstrates a global mechanism of tethering Polycomb group (PcG) proteins through sequence-specific DNA-binding factors.
New genomic maps reveal that R-loop structures formed upon hybridization of nascent RNA transcripts to the DNA template are a common characteristic of Arabidopsis chromatin that may have a broad impact on gene expression.
Cold stress activates Arabidopsis thaliana plasma membrane-localized CRPK1, which leads to 14-3-3 proteins entering the nucleus and promoting the degradation of CBF transcription factors, thus attenuating the cold-induced response.