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Type: Journal article
Title: Transposable elements (TEs) contribute to stress-related long intergenic noncoding RNAs in plants
Author: Wang, D.
Qu, Z.
Yang, L.
Zhang, Q.
Liu, Z.
Do, T.
Adelson, D.
Wang, Z.
Searle, I.
Zhu, J.
Citation: The Plant Journal, 2017; 90(1):133-146
Publisher: Wiley
Issue Date: 2017
ISSN: 0960-7412
Statement of
Dong Wang, Zhipeng Qu, Lan Yang, Qingzhu Zhang, Zhi-Hong Liu, Trung Do, David L. Adelson, Zhen-Yu Wang, Iain Searle and Jian-Kang Zhu
Abstract: Noncoding RNAs have been extensively described in plant and animal transcriptomes by using high-throughput sequencing technology. Of these noncoding RNAs, a growing number of long intergenic noncoding RNAs (lincRNAs) have been described in multicellular organisms, however the origins and functions of many lincRNAs remain to be explored. In many eukaryotic genomes, transposable elements (TEs) are widely distributed and often account for large fractions of plant and animal genomes yet the contribution of TEs to lincRNAs is largely unknown. By using strand-specific RNA-sequencing, we profiled the expression patterns of lincRNAs in Arabidopsis, rice and maize, and identified 47 611 and 398 TE-associated lincRNAs (TE-lincRNAs), respectively. TE-lincRNAs were more often derived from retrotransposons than DNA transposons and as retrotransposon copy number in both rice and maize genomes so did TE-lincRNAs. We validated the expression of these TE-lincRNAs by strand-specific RT-PCR and also demonstrated tissue-specific transcription and stress-induced TE-lincRNAs either after salt, abscisic acid (ABA) or cold treatments. For Arabidopsis TE-lincRNA11195, mutants had reduced sensitivity to ABA as demonstrated by longer roots and higher shoot biomass when compared to wild-type. Finally, by altering the chromatin state in the Arabidopsis chromatin remodelling mutant ddm1, unique lincRNAs including TE-lincRNAs were generated from the preceding untranscribed regions and interestingly inherited in a wild-type background in subsequent generations. Our findings not only demonstrate that TE-associated lincRNAs play important roles in plant abiotic stress responses but lincRNAs and TE-lincRNAs might act as an adaptive reservoir in eukaryotes.
Keywords: abiotic stress
long intergenic noncoding RNAs
noncoding RNAs
transposable element
transposable elements-associated lincRNAs
Rights: © 2017 The Authors The Plant Journal © 2017 John Wiley & Sons Ltd
DOI: 10.1111/tpj.13481
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