Analysis of Chromosomal Structural Polymorphisms in the St, P, and Y Genomes of Triticeae (Poaceae)

Overview

Journal Genome

Specialty Genetics

Date 2010 Mar 19

PMID 20237601

Citations 12

Authors

Qiuxia Wang

Jishan Xiang

Ainong Gao

Xinming Yang

Weihua Liu

Xiuquan Li

Lihui Li

Affiliations

Soon will be listed here.

Abstract

The St, P, and Y genomes are three important genomes in the tribe Triticeae, which includes many perennial species. To study polymorphisms within the chromosomes of the St, P, and Y genomes, a GISH-FISH method was developed that allowed them to be clearly distinguished. The karyotypes of five individuals from population Z1925 of Kengyilia grandiglumis (Keng) J.L. Yang et al. (2n = 6x = 42, StStPPYY) were analyzed. The results showed that there were structural polymorphisms in all of the chromosomes from the three individual genomes. The polymorphisms were found mainly in the terminal regions of chromosomes and infrequently near the centromeric region. Of all the chromosomes, 1P, 1St, 1Y, 2Y, 3St, and 3Y showed the most polymorphisms. The polymorphisms within the individual chromosomes suggested that more extensive and scientific conclusions regarding the origin and evolution of genomes in wild species of Triticeae would be achieved by studying a population as a sampling and analysis unit.

Citing Articles

Development and application of universal ND-FISH probes for detecting P-genome chromosomes based on transposable elements.

Sun Y, Han H, Wang X, Han B, Zhou S, Zhang M Mol Breed. 2023; 42(8):48.

PMID: 37313513 PMC: 10248659. DOI: 10.1007/s11032-022-01320-w.

The Genomic Variation and Differentially Expressed Genes on the 6P Chromosomes in Wheat- Addition Lines 5113 and II-30-5 Confer Different Desirable Traits.

Yang W, Han H, Guo B, Qi K, Zhang J, Zhou S Int J Mol Sci. 2023; 24(8).

PMID: 37108219 PMC: 10139034. DOI: 10.3390/ijms24087056.

The launch of satellite: DNA repeats as a cytogenetic tool in discovering the chromosomal universe of wild Triticeae.

Kroupin P, Ulyanov D, Karlov G, Divashuk M Chromosoma. 2023; 132(2):65-88.

PMID: 36905415 DOI: 10.1007/s00412-023-00789-4.

Intraspecific Genetic Polymorphism Revealed by Fluorescence In Situ Hybridization with Newly Identified Tandem Repeats and Wheat Single-Copy Gene Probes.

Wu D, Yang N, Xiang Q, Zhu M, Fang Z, Zheng W Int J Mol Sci. 2022; 23(23).

PMID: 36499149 PMC: 9737853. DOI: 10.3390/ijms232314818.

Identification of P genome chromosomes in Agropyron cristatum and wheat-A. cristatum derivative lines by FISH.

Han H, Liu W, Zhang J, Zhou S, Yang X, Li X Sci Rep. 2019; 9(1):9712.

PMID: 31273296 PMC: 6609639. DOI: 10.1038/s41598-019-46197-6.