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Updated: Apr 29, 2026
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RNA-Seq Analysis of Differential Gene Expression in Electroporated Chick Embryonic Spinal Cord
Published on: November 1, 2014
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Draft sequences of the radish (Raphanus sativus L.) genome
Hiroyasu Kitashiba1, Feng Li1, Hideki Hirakawa2
1Graduate School of Agricultural Science, Tohoku University, 1-1 Tsutsumidori-Amamiyamachi, Aoba-ku, Sendai, Miyagi 981-8555, Japan.
Summary
Researchers sequenced the radish genome, generating a draft genome sequence and a high-density integrated linkage map. This provides a valuable resource for understanding radish genetics and improving this important vegetable crop.
Area of Science:
- Plant genomics
- Agricultural science
- Molecular biology
Background:
- Radish (Raphanus sativus L.) is a significant vegetable crop in Asia.
- Genome rearrangements in Brassica and related species complicate functional analysis using existing genomic data.
- A comprehensive radish genome sequence is needed for accurate genetic studies.
Purpose of the Study:
- To perform whole-genome sequencing of radish.
- To construct a high-density integrated genetic map for radish.
- To identify single nucleotide polymorphisms (SNPs) for genetic diversity studies.
Main Methods:
- Next-generation sequencing (NGS) generated 191.1 Gb of short reads.
- Scaffold construction and draft genome assembly yielded a 402 Mb sequence.
- Integrated linkage map construction utilized SNP, PCR-RFLP, and SSR markers.
Main Results:
- A draft genome sequence of 402 Mb with 61,572 predicted genes was obtained.
- A high-density integrated linkage map with 2,553 DNA markers was created.
- 1,345 scaffolds were assigned to the linkage map, covering 116.0 Mb.
- SNPs were identified in eight radish inbred lines using NGS.
Conclusions:
- The radish draft genome sequence and integrated linkage map are foundational resources.
- These resources will facilitate gene discovery and functional genomics in radish.
- The identified SNPs will aid in understanding genetic diversity and breeding efforts.
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