作者
Sampath Perumal, Nomar Espinosa Waminal, Jonghoon Lee, Nur Kholilatul Izzah, Mina Jin, Beom-Soon Choi, Tae-Jin Yang
发表日期
2016/8/31
期刊
Plant breeding and biotechnology
卷号
4
期号
3
页码范围
285-296
出版商
Korean Society of Breeding Science
简介
Miniature transposable elements (mTEs) such as miniature inverted-repeat transposable element (MITE), terminal repeat retrotransposon in miniature, and short interspersed element are exquisite sources for marker development. mTEs are short, non-autonomous and stably inherited. The high-copy members are widely distributed into the gene rich euchromatic regions. Here, we conducted a modified transposon display (TD) for a high-copy MITE family, BraSto-2 (Bs2). The Bs2-specific primers derived from conserved sequences of Bs2 members as well as Mse I adapter primers were used for polymerase chain reaction (PCR) in two Brassica rapa accessions,‘Chiifu’and ‘Kenshin’. The pooled PCR products were sequenced by Illumina sequencing platform instead of high-resolution gel electrophoresis. Subsequent in silico-based insertion polymorphism (IP) analysis (next-generation sequencing [NGS]-based Bs2 transposon display) was conducted, which generated more than 99 putative polymorphic insertion sites between ‘Chiifu’and ‘Kenshin’. Among 90 successful PCR amplification, 34 showed Bs2 IP (IP-Bs2) between ‘Chiifu’and ‘Kenshin’accessions, 27 and seven ‘Chiifu’-and ‘Kenshin’-unique insertions, respectively. When the 90 IP-Bs2 primer sets were applied to 10 Brassica accessions, including four additional B. rapa and B. oleracea accessions, 69 (76%) showed insertion olymorphism among accessions. The IP-Bs2 were evenly distributed through all the chromosomes and provide rich polymorphism among various B. rapa and B. oleracea accessions demonstrating the usefulness of these markers for various genetic diversity and …
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