Genome-wide atlas of loci involved in chromosomal recombination in common wheat

Yanchun Peng; Xinru Lyu; Dengan Xu; Zunjie Wang; Xianchun Xia; Yuanfeng Hao; Hongya Wu; Wujun Ma

doi:10.1186/s12870-024-05800-3

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Genome-wide atlas of loci involved in chromosomal recombination in common wheat

Journal article

Open access

Peer reviewed

Genome-wide atlas of loci involved in chromosomal recombination in common wheat

Yanchun Peng, Xinru Lyu, Dengan Xu, Zunjie Wang, Xianchun Xia, Yuanfeng Hao, Hongya Wu and Wujun Ma

BMC plant biology, Vol.24(1), 1124

2024

DOI: https://doi.org/10.1186/s12870-024-05800-3

PMID: 39587535

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Abstract

Chromosome Mapping

Chromosomes, Plant - genetics

Genome, Plant

Plant Breeding

Quantitative Trait Loci

Recombination, Genetic

Triticum - genetics

Chromosomal recombination is a pivotal biological mechanism for generating novel genetic diversity, essential for plant breeding and genetic research endeavors. This study investigated the genetic loci involved in chromosomal recombination through analyzing five published recombinant inbred line (RIL) populations and four double haploid (DH) populations. Great phenotypic variations in recombination frequency were observed between populations and chromosomes. A total of 29 QTL were mapped, which were predominantly located on the B genome. Notably, one QTL on chromosome 6AL was identified from two RIL populations and one QTL on chromosome 3B was identified in both RIL and DH populations. Additionally, a map delineating recombination hotspot regions was developed, and these regions were observed on all chromosomes except for 6B. Recombination hotspot regions tended to locate on chromosomes 1D, 3A, 3B, 6A, and 7D compared to chromosomes 1B, 5B, and 6B. In addition, most hotspot regions were located at chromosome termini, with some clustering in specific regions. Besides genetic factors, the study also explored the impact of chip size and population type on the number of identifiable chromosomal recombination events. Overall, this work improves our understanding of the molecular mechanisms for the chromosomal recombination rate and may contribute to the optimization of breeding strategies in wheat.

Details

Title: Genome-wide atlas of loci involved in chromosomal recombination in common wheat
Authors/Creators: Yanchun Peng - Ministry of Agriculture and Rural Affairs
Xinru Lyu - Qingdao Agricultural University
Dengan Xu - Qingdao Agricultural University
Zunjie Wang - Ministry of Agriculture and Rural Affairs
Xianchun Xia - Institute of Crop Sciences
Yuanfeng Hao - Institute of Crop Sciences
Hongya Wu - Ministry of Agriculture and Rural Affairs
Wujun Ma - Murdoch University, Centre for Crop and Food Innovation
Publication Details: BMC plant biology, Vol.24(1), 1124
Publisher: BioMed Central Ltd unless otherwise stated. Part of Springer Nature.
Number of pages: 10
Grant note: 31701506 / the National Natural Science Foundation of China BE202133 / the Key R&D Projects in Jiangsu Province: Breeding of New Varieties of High-Quality Green Weak Gluten Wheat 2024ZW002 / Open Research Fund of Anhui Provincial Key Laboratory of Crop Quality Improvement U22A20457 / the Joint Funds of the National Natural Science Foundation of China
Identifiers: 991005720268107891
Murdoch Affiliation: Food Futures Institute
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Citation topics: 3 Agriculture, Environment & Ecology; 3.4 Crop Science; 3.4.96 QTL
Web Of Science research areas: Plant Sciences
ESI research areas: Plant & Animal Science