Skip to main content
Log in

Deep Sequencing Reveals Divergent Expression Patterns Within the Small RNA Transcriptomes of Cultured and Vegetative Tissues of Sugarcane

  • Original Paper
  • Published:
Plant Molecular Biology Reporter Aims and scope Submit manuscript

Abstract

Deep sequencing has advanced the discovery and analysis of the small RNA component of transcriptomes and has revealed developmentally-regulated populations of small RNAs consistent with key roles in plant development. To study small RNA transcriptome complexity and explore their roles in sugarcane development, we obtained almost 50 million small RNA reads from suspension cells, embryogenic calli, leaf, apex and a developmental series of stem internodes. The complexity of the small RNA component of the transcriptome varied between tissues. The undifferentiated and young tissue type libraries had lower redundancy levels than libraries generated from maturing and mature tissues. The ratio of 21:24 nt small RNAs also varied widely between different tissue types, as did the proportion of abundant small RNAs derived from each putative origin of small RNA biogenesis. Cluster analysis indicates many abundant small RNAs display developmental expression patterns. There was substantial variation in isomiR composition, abundance and expression patterns within sugarcane microRNA (miRNA) families. Two hundred and fifty-six isomiRs from 36 miRNA families were identified by homology to known miRNA families from a range of plant species. Many isomiRs and miRNA families appear to be developmentally regulated, including a subset of miRNAs that are progressively upregulated during stem internode maturation. Transcribed sequences putatively targeted by abundant sugarcane small RNAs were predicted and miRNA directed cleavage of 18 predicted sugarcane targets were validated by 5′ RACE.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9

Similar content being viewed by others

References

Download references

Acknowledgments

We thank Daniel Barry for technical assistance, Michael Graham for assistance with calli and suspension cell library data acquisition and Robert Birch for assistance with project conception and editing of the manuscript. This research was supported through a collaboration between CSR Sugar Limited (Sucrogen) and The University of Queensland under the Australian Research Council’s Linkage scheme.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Richard L. Moyle.

Electronic supplementary material

Below is the link to the electronic supplementary material.

Supplementary file 1

(XLSX 27 kb)

Supplementary file 5

(XLSX 353 kb)

Supplementary file 6

(XLSX 11 kb)

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Sternes, P.R., Moyle, R.L. Deep Sequencing Reveals Divergent Expression Patterns Within the Small RNA Transcriptomes of Cultured and Vegetative Tissues of Sugarcane. Plant Mol Biol Rep 33, 931–951 (2015). https://doi.org/10.1007/s11105-014-0787-0

Download citation

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11105-014-0787-0

Keywords

Navigation