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Competition of Parental Genomes in Plant Hybrids
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SYSNO ASEP 0540564 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Competition of Parental Genomes in Plant Hybrids Author(s) Glombik, M. (CZ)
Bačovský, Václav (BFU-R) ORCID
Hobza, Roman (BFU-R) RID, ORCID
Kopecký, D. (CZ)Number of authors 4 Article number 200 Source Title Frontiers in Plant Science. - : Frontiers Research Foundation - ISSN 1664-462X
Roč. 11, FEB 25 2020 (2020)Number of pages 11 s. Publication form Online - E Language eng - English Country CH - Switzerland Keywords allopolyploid coffea-arabica ; expression level dominance ; gene-expression ; homoeologous recombination ; nucleolar dominance Subject RIV EF - Botanics OECD category Plant sciences, botany R&D Projects GA16-08698S GA ČR - Czech Science Foundation (CSF) GA19-05445S GA ČR - Czech Science Foundation (CSF) GA18-06147S GA ČR - Czech Science Foundation (CSF) Method of publishing Open access Institutional support BFU-R - RVO:68081707 UT WOS 000526666900001 EID SCOPUS 85082436685 DOI 10.3389/fpls.2020.00200 Annotation Interspecific hybridization represents one of the main mechanisms of plant speciation. Merging of two genomes from different subspecies, species, or even genera is frequently accompanied by whole-genome duplication (WGD). Besides its evolutionary role, interspecific hybridization has also been successfully implemented in multiple breeding programs. Interspecific hybrids combine agronomic traits of two crop species or can be used to introgress specific loci of interests, such as those for resistance against abiotic or biotic stresses. The genomes of newly established interspecific hybrids (both allopolyploids and homoploids) undergo dramatic changes, including chromosome rearrangements, amplifications of tandem repeats, activation of mobile repetitive elements, and gene expression modifications. To ensure genome stability and proper transmission of chromosomes from both parental genomes into subsequent generations, allopolyploids often evolve mechanisms regulating chromosome pairing. Such regulatory systems allow only pairing of homologous chromosomes and hamper pairing of homoeologs. Despite such regulatory systems, several hybrid examples with frequent homoeologous chromosome pairing have been reported. These reports open a way for the replacement of one parental genome by the other. In this review, we provide an overview of the current knowledge of genomic changes in interspecific homoploid and allopolyploid hybrids, with strictly homologous pairing and with relaxed pairing of homoeologs. Workplace Institute of Biophysics Contact Jana Poláková, polakova@ibp.cz, Tel.: 541 517 244 Year of Publishing 2021 Electronic address https://www.frontiersin.org/articles/10.3389/fpls.2020.00200/full
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