Identification of 5P Chromosomes in Wheat- Addition Line and Analysis of Its Effect on Homologous Pairing of Wheat Chromosomes

Overview

Journal Front Plant Sci

Date 2022 Mar 14

PMID 35283927

Authors

Cuili Pan

Qingfeng Li

Haiming Han

Jinpeng Zhang

Shenghui Zhou

Xinming Yang

Xiuquan Li

Lihui Li

Weihua Liu

Affiliations

Soon will be listed here.

Abstract

As an important wheat wild relative, the P genome of (L.) Gaertn. (2 = 4 = 28) is very valuable for wheat improvement. A complete set of wheat- disomic addition lines is the basis for studying the genetic behavior of alien homoeologous chromosomes and exploring and utilizing the excellent genes. In this study, a wheat- derivative II-11-1 was proven to contain a pair of 5P chromosomes and a pair of 2P chromosomes with 42 wheat chromosomes by analyzing the fluorescence hybridization (FISH) and expressed sequence tag (EST) markers. Additionally, cytological identification and field investigation showed that the 5P chromosome can weaken the homologous pairing of wheat chromosomes and promote the pairing between homoeologous chromosomes. This provides new materials for studying the mechanism of the alien gene affecting the homologous chromosome pairing and promoting the homoeologous pairing of wheat. In addition, chromosomal structural variants have been identified in the progeny of II-11-1. Therefore, the novel 5P addition line might be used as an important genetic material to widen the genetic resources of wheat.

Citing Articles

Molecular evidence depicts genetic divergence among Agropyron elongatum and A. cristatum accessions from gene pool of Iran.

Hatami Maleki H, Mohammadi R, Firouzkuhi F, Darvishzadeh R, Zeinalzadeh-Tabrizi H PLoS One. 2023; 18(11):e0294694.

PMID: 38033138 PMC: 10688953. DOI: 10.1371/journal.pone.0294694.

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