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Delame M, Prado E, Blanc S, Robert-Siegwald G, Schneider C, Mestre P, Rustenholz C, Merdinoglu D. Introgression reshapes recombination distribution in grapevine interspecific hybrids. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2019; 132:1073-1087. [PMID: 30535509 DOI: 10.1007/s00122-018-3260-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 12/03/2018] [Indexed: 05/25/2023]
Abstract
In grapevine interspecific hybrids, meiotic recombination is suppressed in homeologous regions and enhanced in homologous regions of recombined chromosomes, whereas crossover rate remains unchanged when chromosome pairs are entirely homeologous. Vitis rotundifolia, an American species related to the cultivated European grapevine Vitis vinifera, has a high level of resistance to several grapevine major diseases and is consequently a valuable resource for grape breeding. However, crosses between both species most often lead to very few poorly fertile hybrids. In this context, identifying genetic and genomic features that make cross-breeding between both species difficult is essential. To this end, three mapping populations were generated by pseudo-backcrosses using V. rotundifolia as the donor parent and several V. vinifera cultivars as the recurrent parents. Genotyping-by-sequencing was used to establish high-density genetic linkage maps and to determine the genetic composition of the chromosomes of each individual. A good collinearity of the SNP positions was observed between parental maps, confirming the synteny between both species, except on lower arm of chromosome 7. Interestingly, recombination rate in V. rotundifolia × V. vinifera interspecific hybrids depends on the length of the introgressed region. It is similar to grapevine for chromosome pairs entirely homeologous. Conversely, for chromosome pairs partly homeologous, recombination is suppressed in the homeologous regions, whereas it is enhanced in the homologous ones. This balance leads to the conservation of the total genetic length of each chromosome between V. vinifera and hybrid maps, whatever the backcross level and the proportion of homeologous region. Altogether, these results provide new insight to optimize the use of V. rotundifolia in grape breeding and, more generally, to improve the introgression of gene of interest from wild species related to crops.
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Affiliation(s)
- Marion Delame
- SVQV UMR-A 1131, INRA, Université de Strasbourg, 68000, Colmar, France
- Direction des Formations Doctorales, AgroParisTech, 19 avenue du Maine, 75015, Paris, France
| | - Emilce Prado
- SVQV UMR-A 1131, INRA, Université de Strasbourg, 68000, Colmar, France
| | - Sophie Blanc
- SVQV UMR-A 1131, INRA, Université de Strasbourg, 68000, Colmar, France
| | | | | | - Pere Mestre
- SVQV UMR-A 1131, INRA, Université de Strasbourg, 68000, Colmar, France
| | | | - Didier Merdinoglu
- SVQV UMR-A 1131, INRA, Université de Strasbourg, 68000, Colmar, France.
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Giraut L, Falque M, Drouaud J, Pereira L, Martin OC, Mézard C. Genome-wide crossover distribution in Arabidopsis thaliana meiosis reveals sex-specific patterns along chromosomes. PLoS Genet 2011; 7:e1002354. [PMID: 22072983 PMCID: PMC3207851 DOI: 10.1371/journal.pgen.1002354] [Citation(s) in RCA: 172] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2011] [Accepted: 09/08/2011] [Indexed: 11/19/2022] Open
Abstract
In most species, crossovers (COs) are essential for the accurate segregation of homologous chromosomes at the first meiotic division. Their number and location are tightly regulated. Here, we report a detailed, genome-wide characterization of the rate and localization of COs in Arabidopsis thaliana, in male and female meiosis. We observed dramatic differences between male and female meiosis which included: (i) genetic map length; 575 cM versus 332 cM respectively; (ii) CO distribution patterns: male CO rates were very high at both ends of each chromosome, whereas female CO rates were very low; (iii) correlations between CO rates and various chromosome features: female CO rates correlated strongly and negatively with GC content and gene density but positively with transposable elements (TEs) density, whereas male CO rates correlated positively with the CpG ratio. However, except for CpG, the correlations could be explained by the unequal repartition of these sequences along the Arabidopsis chromosome. For both male and female meiosis, the number of COs per chromosome correlates with chromosome size expressed either in base pairs or as synaptonemal complex length. Finally, we show that interference modulates the CO distribution both in male and female meiosis.
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Affiliation(s)
- Laurène Giraut
- Institut Jean-Pierre Bourgin, UMR1318 INRA-AgroParisTech, INRA Centre de Versailles-Grignon, Versailles, France
| | - Matthieu Falque
- UMR de Génétique Végétale du Moulon, INRA/CNRS/Univ Paris-Sud/AgroParisTech, Gif sur Yvette, France
| | - Jan Drouaud
- Institut Jean-Pierre Bourgin, UMR1318 INRA-AgroParisTech, INRA Centre de Versailles-Grignon, Versailles, France
| | - Lucie Pereira
- Institut Jean-Pierre Bourgin, UMR1318 INRA-AgroParisTech, INRA Centre de Versailles-Grignon, Versailles, France
| | - Olivier C. Martin
- UMR de Génétique Végétale du Moulon, INRA/CNRS/Univ Paris-Sud/AgroParisTech, Gif sur Yvette, France
| | - Christine Mézard
- Institut Jean-Pierre Bourgin, UMR1318 INRA-AgroParisTech, INRA Centre de Versailles-Grignon, Versailles, France
- * E-mail:
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