Meiosis in Polyploid Plants

Zielinski, Marie-Luise; Scheid, Ortrun Mittelsten

doi:10.1007/978-3-642-31442-1_3

Cited by 37 publications

(40 citation statements)

References 148 publications

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“…It has been widely reported that the rate of DR is expected to increase toward the telomeres (Mather 1936;Fisher 1947;Butruille and Boiteux 2000;Stift et al 2008;Nemorin et al 2012;Zielinski and Scheid 2012), given that the probability of a crossover occurring between the centromere and a locus should increase as that locus is situated further from the centromere. Nevertheless, this has been experimentally verified only rarely.…”

Section: Dr Increases Toward the Telomeresmentioning

confidence: 99%

The Double-Reduction Landscape in Tetraploid Potato as Revealed by a High-Density Linkage Map

et al. 2015

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The creation of genetic linkage maps in polyploid species has been a long-standing problem for which various approaches have been proposed. In the case of autopolyploids, a commonly used simplification is that random bivalents form during meiosis. This leads to relatively straightforward estimation of recombination frequencies using maximum likelihood, from which a genetic map can be derived. However, autopolyploids such as tetraploid potato (Solanum tuberosum L.) may exhibit additional features, such as double reduction, not normally encountered in diploid or allopolyploid species. In this study, we produced a high-density linkage map of tetraploid potato and used it to identify regions of double reduction in a biparental mapping population. The frequency of multivalents required to produce this degree of double reduction was determined through simulation. We also determined the effect that multivalents or preferential pairing between homologous chromosomes has on linkage mapping. Low levels of multivalents or preferential pairing do not adversely affect map construction when highly informative marker types and phases are used. We reveal the double-reduction landscape in tetraploid potato, clearly showing that this phenomenon increases with distance from the centromeres.KEYWORDS linkage mapping; tetraploid; double reduction; potato; multivalents P OLYPLOID species constitute a very important group among cultivated crops. Polyploids themselves can be further divided into auto-and allopolyploids, with autopolyploids showing random association between homologous chromosomes and allopolyploids showing nonrandom or preferential pairing during meiosis. Linkage mapping in autopolyploid species remains a challenging exercise despite recent advances in genotyping technology and mapping methodology. Breeding work in many autopolyploid crops has yet to benefit from the use of markers in breeding programs. This is partly due to the lack of software to perform linkage mapping and QTL analysis in polyploids but is also due to the complicated nature of autopolyploid genomes and genetics. The software program TetraploidMap (Hackett and Luo 2003) is a notable exception to this but is constrained by the relatively low numbers of markers it can handle (currently 800 is the maximum) and the need to manually assign marker phase, which may become infeasible with large data sets.One autopolyploid species in which large advances in genetic analysis have been made is tetraploid potato (Solanum tuberosum L.), in terms of the availability of a high-quality reference sequence (Potato Genome Sequencing Consortium 2011), many published linkage maps (Meyer et al. 1998;van Os et al. 2006;Felcher et al. 2012;Hackett et al. 2013) as well as methods for performing linkage mapping at the polyploid level (Luo et al. 2001;Bradshaw et al. 2004;Hackett et al. 2013). In comparison with other economically important autotetraploid species such as alfalfa, rose, and leek, the pairing behavior of potato is thought to be relatively well understo...

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Section: Dr Increases Toward the Telomeresmentioning

confidence: 99%

The Double-Reduction Landscape in Tetraploid Potato as Revealed by a High-Density Linkage Map

et al. 2015

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“…The first concerns the early stages of meiosis which lead to the formation of different types of pairing structures ( Figure 2). As already mentioned, the precise details of Prophase I are beyond the scope of this introduction, but the interested reader is directed to any number of excellent reviews on the subject of meiosis in general (Harrison et al, 2010;Da Ines et al, 2014;Hunter, 2015;Mercier et al, 2015;Zickler and Kleckner, 2015), and in particular those that look specifically at polyploid meiosis (Cifuentes et al, 2010;Zielinski and Scheid, 2012;Grandont et al, 2013;Moore, 2013;Lloyd and Bomblies, 2016).…”

Section: Meiosis In Polyploidsmentioning

confidence: 99%

“…It has been widely reported that the rate of double reduction is expected to increase towards the telomeres (Mather, 1936;Fisher, 1947;Butruille and Boiteux, 2000;Stift et al, 2008;Nemorin et al, 2012;Zielinski and Scheid, 2012), given that the probability of a cross-over occurring between the centromere and a locus should increase as that locus is situated further from the centromere. Nevertheless, it has only rarely been experimentally verified.…”

Section: Double Reduction Increases Towards the Telomeresmentioning

confidence: 99%

“…Apomixis can be defined as the production of seeds from maternal tissues, bypassing normal sexual reproduction (Comai, 2005;Bicknell and Catanach, 2015). There are numerous reports of the association of gametophytic apomixis with polyploidy (Wet and Harlan, 1970;Whitton et al, 2008), with a number of possible theories proposed (both mechanistic and evolutionary) but no consensus on the precise reason why this should be (Quarin et al, 2001;Comai, 2005;Zielinski and Scheid, 2012). Whatever the connection, the potential attractiveness of programmable apomixis for breeding has widely been acknowledged (Spillane et al, 2004;Abdi et al, 2016;Bicknell et al, 2016;Bradshaw, 2016), and not just at the polyploid level.…”

Section: Where Next For Polysomic Polyploid Breeding?mentioning

confidence: 99%

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Genetic mapping in polyploids

Bourke¹

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“…This review will complement several other recent reviews on this topic [Jenczewski and Alix, 2004;Cifuentes et al, 2010b;Yousafzai et al, 2010;Zielinski and Mittelsten Scheid, 2012;Stenberg and Saura, this issue]. …”

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confidence: 99%

Meiosis and Its Deviations in Polyploid Plants

Grandont

Jenczewski

Lloyd

2013

Cytogenet Genome Res

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Meiosis is a fundamental process in all sexual organisms that ensures fertility and genome stability and creates genetic diversity. For each of these outcomes, the exclusive formation of crossovers between homologous chromosomes is needed. This is more difficult to achieve in polyploid species which have more than 2 sets of chromosomes able to recombine. In this review, we describe how meiosis and meiotic recombination ‘deviate' in polyploid plants compared to diploids, and give an overview of current knowledge on how they are regulated. See also the sister article focusing on animals by Stenberg and Saura in this themed issue.

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Meiosis in Polyploid Plants

Cited by 37 publications

References 148 publications

The Double-Reduction Landscape in Tetraploid Potato as Revealed by a High-Density Linkage Map

The Double-Reduction Landscape in Tetraploid Potato as Revealed by a High-Density Linkage Map

Genetic mapping in polyploids

Meiosis and Its Deviations in Polyploid Plants

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