Cited by 457Genetic and Environmental Crop StudiesGenomics and Phylogenetic StudiesChromosomal and Genetic Variations

De Novo Assembly of Chickpea Transcriptome Using Short Reads for Gene Discovery and Marker Identification

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Garg, R., Patel, R. K., Tyagi, A. K., Jain, M.·2011·DNA Research

Abstract

Chickpea ranks third among the food legume crops production in the world. However, the genomic resources available for chickpea are still very limited. In the present study, the transcriptome of chickpea was sequenced with short reads on Illumina Genome Analyzer platform. We have assessed the effect of sequence quality, various assembly parameters and assembly programs on the final assembly output. We assembled ~107million high-quality trimmed reads using Velvet followed by Oases with optimal parameters into a non-redundant set of 53 409 transcripts (≥100 bp), representing about 28 Mb of unique transcriptome sequence. The average length of transcripts was 523 bp and N50 length of 900 bp with coverage of 25.7 rpkm (reads per kilobase per million). At the protein level, a total of 45 636 (85.5%) chickpea transcripts showed significant similarity with unigenes/predicted proteins from other legumes or sequenced plant genomes. Functional categorization revealed the conservation of genes involved in various biological processes in chickpea. In addition, we identified simple sequence repeat motifs in transcripts. The chickpea transcripts set generated here provides a resource for gene discovery and development of functional molecular markers. In addition, the strategy for de novo assembly of transcriptome data presented here will be helpful in other similar transcriptome studies.

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Authors
Garg, R., Patel, R. K., Tyagi, A. K., & Jain, M.
Affiliations
National Institute of Plant Genome Research (IN)
Corresponding author
Jain, M.
Venue
DNA Research
Published
2011-01-07
Volume
18
Issue
1
Pages
53-63
ISSN
  • 1340-2838 (ISSN-L)
  • 1756-1663
OpenAlex
W2160525528
Cited by
457
References
40
Citations by year
2026: 6 · 2025: 3 · 2024: 2 · 2023: 12 · 2022: 15 · 2021: 14 · 2020: 19 · 2019: 35 · 2018: 24 · 2017: 29 · 2016: 51 · 2015: 63 · 2014: 70 · 2013: 53 · 2012: 42
FWCI
70.97
Type
journal article
Language
en
Open access
Locations
  • DNA Research (publishedVersion)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Genetic and Environmental Crop Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Phylogenetic Studies
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Chromosomal and Genetic Variations
Keywords
chickpea, de novo transcriptome assembly, gene discovery, genomic resources
MeSH terms
Base Composition, Plants, Sequence Analysis, DNA, Minisatellite Repeats, DNA, Plant, Gene Expression Profiling, Cicer

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