The Genomic Landscape of Crossover Interference in the Desert Tree Populus euphratica

Wang, Ping and Jiang, Libo and Ye, Meixia and Zhu, Xuli and Wu, Rongling (2019) The Genomic Landscape of Crossover Interference in the Desert Tree Populus euphratica. Frontiers in Genetics, 10. ISSN 1664-8021

[thumbnail of pubmed-zip/versions/1/package-entries/fgene-10-00440/fgene-10-00440.pdf] Text
pubmed-zip/versions/1/package-entries/fgene-10-00440/fgene-10-00440.pdf - Published Version

Download (1MB)

Abstract

Crossover (CO) interference is a universal phenomenon by which the occurrence of one CO event inhibits the simultaneous occurrence of other COs along a chromosome. Because of its critical role in the evolution of genome structure and organization, the cytological and molecular mechanisms underlying CO interference have been extensively investigated. However, the genome-wide distribution of CO interference and its interplay with sex-, stress-, and age-induced differentiation remain poorly understood. Multi-point linkage analysis has proven to be a powerful tool for landscaping CO interference, especially within species for which CO mutants are rarely available. We implemented four-point linkage analysis to landscape a detailed picture of how CO interference is distributed through the entire genome of Populus euphratica, the only forest tree that can survive and grow in saline desert. We identified an extensive occurrence of CO interference, and found that its strength depends on the length of chromosomes and the genomic locations within the chromosome. We detected high-order CO interference, possibly suggesting a highly complex mechanism crucial for P. euphratica to grow, reproduce, and evolve in its harsh environment.

Item Type: Article
Subjects: AP Academic Press > Medical Science
Depositing User: Unnamed user with email support@apacademicpress.com
Date Deposited: 06 Feb 2023 06:47
Last Modified: 03 Aug 2024 13:18
URI: http://info.openarchivespress.com/id/eprint/425

Actions (login required)

View Item
View Item