Comparative analysis of Stowaway‐like miniature inverted repeat transposable elements in wheat group 7 chromosomes: Abundance, composition, and evolution

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Comparative analysis of Stowaway‐like miniature inverted repeat transposable elements in wheat group 7 chromosomes: Abundance, composition, and evolution

Yun‐Ze LU [et al.] - Nama Orang;

Miniature inverted repeat transposable elements (MITEs) are the most ubiquitous transposable elements in eukaryotic genomes; they play a prominent role in sequence divergence and genome evolution. There are many wellcharacterized Stowaway‐like MITE families in wheat, but their distribution, abundance, and composition at the chromosome level are still not well understood. In this study, we systematically investigated the Stowaway‐like MITEs in wheat group 7 chromosomes based on the survey sequences of isolated wheat chromosomes, to compare them at the chromosome level and to reveal their evolutionary role on wheat polyploidization. In summary, 2026 MITEs were identified, of which 587, 714, and 725 were distributed on 7A, 7B, and 7D chromosomes, respectively. There are more MITEs present on 7D, compared to 7A and 7B, suggesting A and B subgenomes eliminated some repetitive elements during two hybridization processes. Furthermore, some chromosome/arm‐specific MITEs were also identified, providing information on the function and evolution of MITEs in wheat genomes. The sequence diversity of the MITE insertions was also investigated. This study for the first time investigated the abundance and composition of MITEs at the chromosome level, which will be beneficial to improve our understanding of the distribution of wheat MITEs and their evolutionary role in polyploidization.

Key words homoeologous chromosomes, repetitive elements, Stowaway‐like MITEs, survey sequences, wheat.

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Informasi Detail

Judul Seri: Journal of Systematics and Evolution
No. Panggil: -
Penerbit: : Institute of Botany., 2014
Deskripsi Fisik: Journal of Systematics and Evolution 52 (6): 743–749 (2014)
Bahasa: English
ISBN/ISSN: doi: 10.1111/jse.121
Klasifikasi: -
Tipe Isi: -
Tipe Media: -
Tipe Pembawa: -
Edisi: -
Subjek: BIOLOGI
Info Detail Spesifik: -
Pernyataan Tanggungjawab: Wati/Agus

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FULL TEXTL:Comparative analysis of Stowaway‐like miniature inverted repeat transposable elements in wheat group 7 chromosomes: Abundance, composition, and evolution

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