Characterization of small RNAs derived from tRNAs, rRNAs and snoRNAs and their response to heat stress in wheat seedlings
PLoS ONE, ISSN: 1932-6203, Vol: 11, Issue: 3, Page: e0150933
2016
- 58Citations
- 91Captures
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Metrics Details
- Citations58
- Citation Indexes58
- 58
- CrossRef19
- Captures91
- Readers91
- 91
Article Description
Small RNAs (sRNAs) derived from non-coding RNAs (ncRNAs), such as tRNAs, rRNAs and snoRNAs, have been identified in various organisms. Several observations have indicated that cleavage of tRNAs and rRNAs is induced by various stresses. To clarify whether sRNAs in wheat derived from tRNAs (stRNAs), rRNAs (srRNAs) and snoRNAs (sdRNAs) are produced specifically in association with heat stress responses, we carried out a bioinformatic analysis of sRNA libraries from wheat seedlings and performed comparisons between control and high-temperature-treated samples to measure the differential abundance of stRNAs, srRNAs and sdRNAs. We found that the production of sRNAs from tRNAs, 5.8S rRNAs, and 28S rRNAs was more specific than that from 5S rRNAs and 18S rRNAs, and more than 95% of the stRNAs were processed asymmetrically from the 3' or 5' ends of mature tRNAs. We identified 333 stRNAs and 8,822 srRNAs that were responsive to heat stress. Moreover, the expression of stRNAs derived from tRNA-Val-CAC, tRNA-Thr-UGU, tRNA-Tyr-GUA and tRNA-Ser-UGA was not only up-regulated under heat stress but also induced by osmotic stress, suggesting that the increased cleavage of tRNAs might be a mechanism that developed in wheat seedlings to help them cope with adverse environmental conditions.
Bibliographic Details
10.1371/journal.pone.0150933; 10.1371/journal.pone.0150933.g007; 10.1371/journal.pone.0150933.g004; 10.1371/journal.pone.0150933.g006; 10.1371/journal.pone.0150933.g003; 10.1371/journal.pone.0150933.t001; 10.1371/journal.pone.0150933.g005; 10.1371/journal.pone.0150933.t002; 10.1371/journal.pone.0150933.g001; 10.1371/journal.pone.0150933.g002
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