MicroRNA gene evolution in Arabidopsis lyrata and Arabidopsis thaliana.

  title={MicroRNA gene evolution in Arabidopsis lyrata and Arabidopsis thaliana.},
  author={Noah Fahlgren and Sanjuro Jogdeo and Kristin D. Kasschau and Christopher M. Sullivan and Elisabeth J. Chapman and Sascha Laubinger and Lisa M Smith and Mark A. Dasenko and Scott A. Givan and Detlef Weigel and James C. Carrington},
  journal={The Plant cell},
  volume={22 4},
MicroRNAs (miRNAs) are short regulatory RNAs processed from partially self-complementary foldbacks within longer MIRNA primary transcripts. Several MIRNA families are conserved deeply through land plants, but many are present only in closely related species or are species specific. The finding of numerous evolutionarily young MIRNA, many with low expression and few if any targets, supports a rapid birth-death model for MIRNA evolution. A systematic analysis of MIRNA genes and families in the… CONTINUE READING
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