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Obtaining High-Quality Transcriptome Data from Cereal Seeds by a Modified Method for Gene Expression Profiling
Published on: May 21, 2020
Comprehensive transcriptome analysis of the highly complex Pisum sativum genome using next generation sequencing
Susanne U Franssen1, Roshan P Shrestha, Andrea Bräutigam
1Institute for Evolution and Biodiversity, Westfalian Wilhelms University, Hüfferstrasse 1, 48149 Münster, Germany.
BMC Genomics
|May 17, 2011
Summary
Researchers generated a high-quality pea transcriptome dataset using next-generation sequencing. This comprehensive reference set addresses the limited genomic resources for Pisum sativum, a key legume crop.
Area of Science:
- Plant genomics
- Transcriptomics
- Legume research
Background:
- Pisum sativum (garden pea) is a well-studied legume with significant agricultural importance.
- The garden pea possesses a large, complex genome, resulting in limited comprehensive genomic resources.
Purpose of the Study:
- To create a high-quality, comprehensive reference transcriptome dataset for Pisum sativum.
- To evaluate and optimize next-generation sequencing and assembly strategies for plant transcriptomes.
Main Methods:
- Utilized Roche/454 next-generation sequencing across diverse Pisum sativum tissues (flowers, leaves, cotyledons, etc.).
- Employed various approaches including library normalization, saturation estimation, and multiple assembly strategies.
- Generated 450 megabases of sequence data, assembled into unigenes.
Main Results:
- Achieved exhaustive sequencing, with normalization aiding expression strength recovery.
- Identified transcriptome assembly as a key area for improvement, particularly regarding redundancy and paralogy.
- Developed a comprehensive, annotated database of Pisum sativum unigenes in fasta format.
Conclusions:
- The generated dataset provides a high-quality reference for the model legume, Pisum sativum.
- Future transcriptome projects for species lacking genomic resources should focus on improving assembly strategies to handle redundancy and paralogy.
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