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Updated: Jul 13, 2025

mRNA Interactome Capture from Plant Protoplasts
Published on: July 28, 2017
Conserved structured domains in plant non-coding RNA enod40, their evolution and recruitment of sequences from
Alexander P Gultyaev1,2, Celine Koster3,4, Diederik Cames van Batenburg1,5
1Leiden Institute of Advanced Computer Science, Leiden University, PO Box 9512, 2300 RA Leiden, The Netherlands.
Abstract:
Plant long noncoding RNA enod40 is involved in the regulation of symbiotic associations with bacteria, in particular, in nitrogen-fixing root nodules of legumes, and with fungi in phosphate-acquiring arbuscular mycorrhizae formed by various plants. The presence of enod40 genes in plants that do not form such symbioses indicates its other roles in cell physiology. The molecular mechanisms of enod40 RNA function are poorly understood. Enod40 RNAs form several structured domains, conserved to different extents. Due to relatively low sequence similarity, identification of enod40 sequences in plant genomes is not straightforward, and many enod40 genes remain unannotated even in complete genomes. Here, we used comparative structure analysis and sequence similarity searches in order to locate enod40 genes and determine enod40 RNA structures in nitrogen-fixing clade plants and in grasses. The structures combine conserved features with considerable diversity of structural elements, including insertions of structured domain modules originating from transposable elements. Remarkably, these insertions contain sequences similar to tandem repeats and several stem-loops are homologous to microRNA precursors.
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