Cited by 51Genomics and Phylogenetic StudiesGenetic Mapping and Diversity in Plants and AnimalsChromosomal and Genetic Variations

Global characterization of the root transcriptome of a wild species of rice, Oryza longistaminata, by deep sequencing

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Yang, Haiyuan, Hu, Liwei, Hurek, Thomas, Reinhold-Hurek, Barbara·2010·BMC Genomics

Abstract

Background: Oryza longistaminata, an AA genome type (2 n = 24), originates from Africa and is closely related to Asian cultivated rice (O. sativa L.). It contains various valuable traits with respect to tolerance to biotic and abiotic stress, QTLs with agronomically important traits and high ability to use nitrogen efficiently (NUE). However, only limited genomic or transcriptomic data of O. longistaminata are currently available. Results: In this study we present the first comprehensive characterization of the O. longistaminata root transcriptome using 454 pyrosequencing. One sequencing run using a normalized cDNA library from O. longistaminata roots adapted to low N conditions generated 337,830 reads, which assembled into 41,189 contigs and 30,178 singletons. By similarity search against protein databases, putative functions were assigned to over 34,510 uni-ESTs. Comparison with ESTs derived from cultivated rice collections revealed expressed genes across different plant species, however 16.7% of the O. longistaminata ESTs had not been detected as expressed in O. sativa. Additionally, 15.7% had no significant similarity to known sequences. RT-PCR and Southern blot analyses confirmed the expression of selected novel transcripts in O. longistaminata. Conclusion: Our results show that one run using a Genome Sequencer FLX from 454 Life Science/Roche generates sufficient genomic information for adequate de novo assembly of a large number of transcripts in a wild rice species, O. longistaminata. The generated sequence data are publicly available and will facilitate gene discovery in O. longistaminata and rice functional genomic studies. The large number of abundant of novel ESTs suggests different metabolic activity in O. longistaminata roots in comparison to O. sativa roots.

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Authors
Yang, H., Hu, L., Hurek, T., & Reinhold-Hurek, B.
Affiliations
University of Bremen (DE)
Venue
BMC Genomics
Published
2010-12
Volume
11
Issue
1
Pages
705-705
ISSN
1471-2164 (ISSN-L)
OpenAlex
W1984078008
Cited by
42
References
37
Citations by year
2026: 1 · 2021: 9 · 2020: 1 · 2019: 2 · 2018: 2 · 2017: 1 · 2016: 3 · 2015: 4 · 2014: 4 · 2013: 4 · 2012: 9
FWCI
1.95
Type
journal article
Language
en
Open access
Locations
  • BMC Genomics (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
  • Bundesministerium für Bildung und Forschung
  • Ministry of Environment
  • Ministry of Environment and Tourism Namibia
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Phylogenetic Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Mapping and Diversity in Plants and Animals
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Chromosomal and Genetic Variations
Keywords
Oryza longistaminata, wild rice, root transcriptome, expressed sequence tags, de novo transcriptome assembly, nitrogen use efficiency, novel transcripts, gene discovery, functional genomics
MeSH terms
Chromosome Mapping, Molecular Sequence Data, Oryza, Species Specificity, Reproducibility of Results, Sequence Analysis, DNA, Gene Expression Regulation, Plant, Plant Roots, Genome, Plant, Expressed Sequence Tags, Gene Expression Profiling, High-Throughput Nucleotide Sequencing

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