Genome structural evolution in Brassica crops.

Autor: He Z; Department of Biology, University of York, York, UK., Ji R; Department of Biology, University of York, York, UK.; Department of Horticulture, Shenyang Agricultural University, Shenyang, China., Havlickova L; Department of Biology, University of York, York, UK., Wang L; Department of Biology, University of York, York, UK., Li Y; Department of Biology, University of York, York, UK., Lee HT; Department of Plant Breeding, Justus Liebig University of Giessen, Giessen, Germany., Song J; National Key Laboratory of Crop Genetic Improvement, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, China., Koh C; Global Institute for Food Security (GIFS), University of Saskatchewan, Saskatoon, Saskatchewan, Canada., Yang J; Department of Horticulture, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou, China., Zhang M; Department of Horticulture, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou, China., Parkin IAP; Agriculture and Agri-Food Canada, Saskatoon, Saskatchewan, Canada., Wang X; Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences (IVF, CAAS), Beijing, China., Edwards D; School of Biological Sciences and the Institute of Agriculture, Faculty of Science, The University of Western Australia, Crawley, Western Australia, Australia., King GJ; Southern Cross Plant Science, Southern Cross University, Lismore, New South Wales, Australia., Zou J; National Key Laboratory of Crop Genetic Improvement, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, China., Liu K; National Key Laboratory of Crop Genetic Improvement, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, China., Snowdon RJ; Department of Plant Breeding, Justus Liebig University of Giessen, Giessen, Germany., Banga SS; Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, India., Machackova I; Selgen, a.s., Plant breeding station, Chlumec nad Cidlinou, Czech Republic., Bancroft I; Department of Biology, University of York, York, UK. ian.bancroft@york.ac.uk.
Jazyk: angličtina
Zdroj: Nature plants [Nat Plants] 2021 Jun; Vol. 7 (6), pp. 757-765. Date of Electronic Publication: 2021 May 27.
DOI: 10.1038/s41477-021-00928-8
Abstrakt: The cultivated Brassica species include numerous vegetable and oil crops of global importance. Three genomes (designated A, B and C) share mesohexapolyploid ancestry and occur both singly and in each pairwise combination to define the Brassica species. With organizational errors (such as misplaced genome segments) corrected, we showed that the fundamental structure of each of the genomes is the same, irrespective of the species in which it occurs. This enabled us to clarify genome evolutionary pathways, including updating the Ancestral Crucifer Karyotype (ACK) block organization and providing support for the Brassica mesohexaploidy having occurred via a two-step process. We then constructed genus-wide pan-genomes, drawing from genes present in any species in which the respective genome occurs, which enabled us to provide a global gene nomenclature system for the cultivated Brassica species and develop a methodology to cost-effectively elucidate the genomic impacts of alien introgressions. Our advances not only underpin knowledge-based approaches to the more efficient breeding of Brassica crops but also provide an exemplar for the study of other polyploids.
Databáze: MEDLINE
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