Expression and functional analysis of TaASY1 during meiosis of bread wheat (Triticum aestivum) |
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| Authors: | Scott A Boden Nadim Shadiac Elise J Tucker Peter Langridge Jason A Able |
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| Affiliation: | 1.Molecular Plant Breeding Cooperative Research Centre, School of Agriculture, Food & Wine,The University of Adelaide,Glen Osmond,Australia;2.Australian Centre for Plant Functional Genomics, School of Agriculture, Food & Wine,The University of Adelaide,Glen Osmond,Australia;3.Institute of Biology III,University of Freiburg,Freiburg,Germany |
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| Abstract: | Background Pairing and synapsis of homologous chromosomes is required for normal chromosome segregation and the exchange of genetic material via recombination during meiosis. Synapsis is complete at pachytene following the formation of a tri-partite proteinaceous structure known as the synaptonemal complex (SC). In yeast, HOP1 is essential for formation of the SC, and localises along chromosome axes during prophase I. Homologues in Arabidopsis (AtASY1), Brassica (BoASY1) and rice (OsPAIR2) have been isolated through analysis of mutants that display decreased fertility due to severely reduced synapsis of homologous chromosomes. Analysis of these genes has indicated that they play a similar role to HOP1 in pairing and formation of the SC through localisation to axial/lateral elements of the SC. |
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