Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 430746
Title Chromosome evolution in Solanum traced by cross-species BAC-FISH
Author(s) Szinay, D.; Wijnker, E.; Berg, R.G. van den; Visser, R.G.F.; Jong, J.H.S.G.M. de; Bai, Y.
Source New Phytologist 195 (2012)3. - ISSN 0028-646X - p. 688 - 698.
DOI https://doi.org/10.1111/j.1469-8137.2012.04195.x
Department(s) Laboratory of Genetics
Biosystematics
Laboratory of Plant Breeding
EPS
Publication type Refereed Article in a scientific journal
Publication year 2012
Keyword(s) l. section lycopersicon - resistance gene - mill. wettst. - linkage map - tomato - solanaceae - potato - reveals - rearrangements - recombination
Abstract Chromosomal rearrangements are relatively rare evolutionary events and can be used as markers to study karyotype evolution. This research aims to use such rearrangements to study chromosome evolution in Solanum. Chromosomal rearrangements between Solanum crops and several related wild species were investigated using tomato and potato bacterial artificial chromosomes (BACs) in a multicolour fluorescent in situ hybridization (FISH). The BACs selected are evenly distributed over seven chromosomal arms containing inversions described in previous studies. The presence / absence of these inversions among the studied Solanum species were determined and the order of the BAC-FISH signals was used to construct phylogenetic trees. Compared with earlier studies, data from this study provide support for the current grouping of species into different sections within Solanum; however, there are a few notable exceptions, such as the tree positions of S. etuberosum (closer to the tomato group than to the potato group) and S. lycopersicoides (sister to S. pennellii). These apparent contradictions might be explained by interspecific hybridization events and / or incomplete lineage sorting. This cross-species BAC painting technique provides unique information on genome organization, evolution and phylogenetic relationships in a wide variety of species. Such information is very helpful for introgressive breeding.
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