New ND-FISH-Positive Oligo Probes for Identifying Thinopyrum Chromosomes in Wheat Backgrounds

Thinopyrum has been widely used to improve wheat (Triticum aestivum L.) cultivars. Non-denaturing fluorescence in situ hybridization (ND-FISH) technology using oligonucleotides (oligo) as probes provides a convenient and efficient way to identify alien chromosomes in wheat backgrounds. However, suit...

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Detalles Bibliográficos
Autores principales: Xi, Wei, Tang, Zongxiang, Tang, Shuyao, Yang, Zujun, Luo, Jie, Fu, Shulan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Brief Report
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6515231/
https://www.ncbi.nlm.nih.gov/pubmed/31027154
http://dx.doi.org/10.3390/ijms20082031
Descripción
Sumario:Thinopyrum has been widely used to improve wheat (Triticum aestivum L.) cultivars. Non-denaturing fluorescence in situ hybridization (ND-FISH) technology using oligonucleotides (oligo) as probes provides a convenient and efficient way to identify alien chromosomes in wheat backgrounds. However, suitable ND-FISH-positive oligo probes for distinguishing Thinopyrum chromosomes from wheat are lacking. Two oligo probes, Oligo-B11 and Oligo-pThp3.93, were designed according to the published Thinopyrum ponticum (Th. ponticum)-specific repetitive sequences. Both Oligo-B11 and Oligo-pThp3.93 can be used for ND-FISH analysis and can replace conventional GISH and FISH to discriminate some chromosomes of Th. elongatum, Th. intermedium, and Th. ponticum in wheat backgrounds. The two oligo probes provide a convenient way for the utilization of Thinopyrum germplasms in future wheat breeding programs.

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