Poor Homologous Synapsis 1 Interacts with Chromatin but Does Not Colocalise with ASYnapsis 1 during Early Meiosis in Bread Wheat
Joint Authors
Able, Amanda J.
Able, Jason A.
Khoo, Kelvin H. P.
Source
International Journal of Plant Genomics
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-02-06
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Chromosome pairing, synapsis, and DNA recombination are three key processes that occur during early meiosis.
A previous study of Poor Homologous Synapsis 1 (PHS1) in maize suggested that PHS1 has a role in coordinating these three processes.
Here we report the isolation of wheat (Triticum aestivum) PHS1 (TaPHS1), and its expression profile during and after meiosis.
While the TaPHS1 protein has sequence similarity to other plant PHS1/PHS1-like proteins, it also possesses a unique region of oligopeptide repeat units.
We show that TaPHS1 interacts with both single- and double-stranded DNA in vitro and provide evidence of the protein region that imparts the DNA-binding ability.
Immunolocalisation data from assays conducted using antisera raised against TaPHS1 show that TaPHS1 associates with chromatin during early meiosis, with the signal persisting beyond chromosome synapsis.
Furthermore, TaPHS1 does not appear to colocalise with the asynapsis protein (TaASY1) suggesting that these proteins are probably independently coordinated.
Significantly, the data from the DNA-binding assays and 3-dimensional immunolocalisation of TaPHS1 during early meiosis indicates that TaPHS1 interacts with DNA, a function not previously observed in either the Arabidopsis or maize PHS1 homologues.
As such, these results provide new insight into the function of PHS1 during early meiosis in bread wheat.
American Psychological Association (APA)
Khoo, Kelvin H. P.& Able, Amanda J.& Able, Jason A.. 2012. Poor Homologous Synapsis 1 Interacts with Chromatin but Does Not Colocalise with ASYnapsis 1 during Early Meiosis in Bread Wheat. International Journal of Plant Genomics،Vol. 2012, no. 2012, pp.1-11.
https://search.emarefa.net/detail/BIM-477707
Modern Language Association (MLA)
Khoo, Kelvin H. P.…[et al.]. Poor Homologous Synapsis 1 Interacts with Chromatin but Does Not Colocalise with ASYnapsis 1 during Early Meiosis in Bread Wheat. International Journal of Plant Genomics No. 2012 (2012), pp.1-11.
https://search.emarefa.net/detail/BIM-477707
American Medical Association (AMA)
Khoo, Kelvin H. P.& Able, Amanda J.& Able, Jason A.. Poor Homologous Synapsis 1 Interacts with Chromatin but Does Not Colocalise with ASYnapsis 1 during Early Meiosis in Bread Wheat. International Journal of Plant Genomics. 2012. Vol. 2012, no. 2012, pp.1-11.
https://search.emarefa.net/detail/BIM-477707
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-477707