title: In situ hybridization analysis indicates that 4AL-5AL-7BS translocation preceded subspecies differentiation of Triticum turgidum.
abstract: The important cyclic translocation 4AL-5AL-7BS is an evolutionary signature of polyploidy in wheat. This study aimed to determine its distribution within the subspecies of Triticum turgidum L., using genomic in situ hybridization and fluorescence in situ hybridization. As it exists in all eight subspecies, this translocation appeared before the differentiation of the subspecies of T. turgidum. This translocation probably first appeared in T. turgidum subsp. dicoccoides and was then transmitted into the other subspecies. Its existence in all of the analyzed subspecies suggests that this translocation may confer an adaptive advantage during the course of evolution.
authors.affiliation: Triticeae Research Institute, Sichuan Agricultural University at Chengdu, Wenjiang, Sichuan 611130, P.R. China.
authors.forename: Ming
authors.initials: M
authors.lastname: Hao
authors.forename: Jiangtao
authors.initials: J
authors.lastname: Luo
authors.forename: Lianquan
authors.initials: L
authors.lastname: Zhang
authors.forename: Zhongwei
authors.initials: Z
authors.lastname: Yuan
authors.forename: Youliang
authors.initials: Y
authors.lastname: Zheng
authors.forename: Huaigang
authors.initials: H
authors.lastname: Zhang
authors.forename: Dengcai
authors.initials: D
authors.lastname: Liu
mesh_terms: D032461:Chromosomes, Plant / Q000235:genetics; D019143:Evolution, Molecular; D049810:Genetic Speciation; D017404:In Situ Hybridization, Fluorescence; D011003:Ploidies; D014178:Translocation, Genetic; D014908:Triticum / Q000235:genetics*