2017
DOI: 10.1007/s11032-017-0700-2
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Abstract: Despite possessing related ancestral genomes, hexaploid wheat behaves as a diploid during meiosis. The wheat Ph1 locus promotes accurate synapsis and crossover of homologous chromosomes. Interspecific hybrids between wheat and wild relatives are exploited by breeders to introgress important traits from wild relatives into wheat, although in hybrids between hexaploid wheat and wild relatives, which possess only homoeologues, crossovers do not take place during meiosis at metaphase I. However, in hybrids between… Show more

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Cited by 95 publications
(115 citation statements)
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References 34 publications
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“…These segments do not freely recombine, therefore, in addition to the beneficial gene, large DNA fragments from the wild relative are introduced often with negative consequences (linkage drag). The use of ZIP4 mutants can be used to circumvent some of these limitations (Rey et al ., ). In an era of gene‐editing and in which most wild wheat relatives are sequenced (Avni et al ., ; Zhao et al ., ; Ling et al ., ), it may be more efficient to identify genetic variation of interest for a given trait through studies directly in the wild relatives (Golan et al ., ).…”
Section: Use Of Natural Variation For Trait Discoverymentioning
confidence: 97%
“…These segments do not freely recombine, therefore, in addition to the beneficial gene, large DNA fragments from the wild relative are introduced often with negative consequences (linkage drag). The use of ZIP4 mutants can be used to circumvent some of these limitations (Rey et al ., ). In an era of gene‐editing and in which most wild wheat relatives are sequenced (Avni et al ., ; Zhao et al ., ; Ling et al ., ), it may be more efficient to identify genetic variation of interest for a given trait through studies directly in the wild relatives (Golan et al ., ).…”
Section: Use Of Natural Variation For Trait Discoverymentioning
confidence: 97%
“…In allopolyploids (formed by both genome duplication and interspecies hybridization), loci required for correct chromosome pairing and recombination have been identified in wheat [4], oil seed rape [5,6] and Arabidopsis suecica [7]. However, in autopolyploids (which form within-species, without hybridization), there has been no functional confirmation of any gene controlling correct chromosome pairing, synapsis and crossing over (CO), although we have detected clear signatures of extreme selection in eight meiosis genes associated with the synaptonemal complex (SC) (ASY1, ASY3, PDS5b, PRD3, REC8, SMC3, ZYP1a, ZYP1b) in the young autotetraploid Arabidopsis arenosa [8].…”
Section: Introductionmentioning
confidence: 99%
“…The locus was further defined to a smaller region (Griffith et al, 2006; Al-Kaff et al, 2008), now defined to 0.5Mb in size and containing 25 genes (7 HC + 18 LC genes), from which only two are expressed in our RNA-Seq data. One of these two genes is the duplicated ZIP4 gene ( TaZIP4-B2 ), which has been recently identified as the gene responsible for both promoting homologous CO and restricting homoeologous CO (Rey et al, 2017, 2018a). Another gene within the Ph1b deletion, termed by the authors as C-Ph1 , was also recently proposed to contribute to the Ph1 effect on recombination, specifically during metaphase I (Bhullar et al, 2014); however, this gene does not show any expression in our RNA-Seq data.…”
Section: Resultsmentioning
confidence: 99%
“…The Ph1 locus in wheat is by far, the best characterized locus involved in the diploid-like behaviour of polyploids during meiosis. Recently, the duplicated ZIP4 gene inside the Ph1 locus on 5B ( TaZIP4-B2 ) has been identified as responsible for the effect of this locus on homoeologous recombination (Rey et al, 2017, 2018a). ZIP4 is a meiotic gene shown to have a major effect on homologous COs in both Arabidopsis and rice (Chelysheva et al, 2007; Shen et al, 2012).…”
Section: Discussionmentioning
confidence: 99%
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