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Cytogenet Genome Res. 2008;120(3-4):320-30. doi: 10.1159/000121081. Epub 2008 May 23.

Nuclear architecture and chromosome dynamics in the search of the pairing partner in meiosis in plants.

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Departamento de Genética, Facultad de Biología, Universidad Complutense de Madrid, Madrid, Spain.


The formation of haploid gametes in organisms with sexual reproduction requires regular bivalent chromosome pairing in meiosis. In many species, homologous chromosomes occupy separate territories at the onset of meiosis. To be paired at metaphase I, they need to be brought into a close proximity for interactions that include homology recognition and the establishment of some form of bonds. How homologues find each other is one of the least understood meiotic events. Plant species with large or medium sized genomes, such as wheat or maize, are excellent materials for the cytological analysis of chromosome dynamics at early meiosis, but genes that control meiosis have been identified mainly in small genome species such as Arabidopsis thaliana. This review is focused on the contribution studies on plants are providing to the knowledge of the initial steps of the meiotic process.

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