microRNA-directed phasing during trans-acting siRNA biogenesis in plants

Article Abstract:

A study is carried out on small RNAs (microRNAs[miRNAs] and siRNAs) that are used by plants and animals as a guide for posttranscriptional and epigenetic regulation. The data obtained from the study supports a model in which miRNA-guided formation of a 5' or 3' terminus within pre-ta-siRNA transcripts yields phased trans-acting-siRNAs that negatively regulate other genes.

Epigenetic inheritance

A two-hit trigger for siRNA biogenesis in plants

Article Abstract:

A high-throughput DNA sequencing is adapted to the discovery of endogenous small RNAs from the moss Physcomitrella patens and Arabidopsis. The results have indicated that dual miRNA complementary sites are a trigger for siRNA biogenesis that is conserved for the past 400 million years and have provided insights into the recognition and silencing of aberrant RNAs.

Genetic aspects, Arabidopsis, Nucleotide sequencing, Report

Ribosome biogenesis: Giant steps for a giant problem

Article Abstract:

The rapamycin-sensitive TOR signaling network that controls ribosomal protein gene expression through the Forkhead-like transcription factor is discussed. Findings show a crucial advance in understanding which TOR regulates ribosome biogenesis according to environmental changes.

Gene expression, Ribosomal proteins