4.5 Article

Natural antisense transcripts of Trifolium repens dehydrins

Journal

PLANT SIGNALING & BEHAVIOR
Volume 8, Issue 12, Pages -

Publisher

TAYLOR & FRANCIS INC
DOI: 10.4161/psb.27674

Keywords

Dehydrins; natural antisense transcripts; sense-antisense pairs; splice variants; Trifolium repens

Funding

  1. Scientific Exchange Programme between Switzerland
  2. New Member States of the European Union - Sciex-NMSch (Identification of Dehydrin Types involved in Abiotic Stress Responses in Trifolium repens - IDAST) [11.113]
  3. NCCR Climate (Project PLANT/SOIL)

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The recently described complex nature of some dehydrin-coding sequences in Trifolium repens could explain the considerable variability among transcripts originating from a single gene. 1 For some of the sequences the existence of natural antisense transcripts (NATs), which could form sense-antisense (SAS) pairs, was predicted. The present study demonstrates that cis-natural antisense transcripts of 2 dehydrin types (YnKn and YnSKn) accumulate in white clover plants subjected to treatments with polyethylene glycol (PEG), abscisic acid (ABA), and high salt concentration. The isolated YnKn cis-NATs mapped to sequence site enriched in alternative start codons. Some of the sense-antisense pairs exhibited inverse expression with differing profiles which depended on the applied stress. A natural antisense transcript coding for an ABC F family protein (a trans-NAT) which shares short sequence homology with YnSKn dehydrin was identified in plants subjected to salt stress. Forthcoming experiments will evaluate the impact of NATs on transcript abundances, elucidating the role of transcriptional and post-transcriptional interferences in the regulation of dehydrin levels under various abiotic stresses.

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