Mapping the ‘breaker’ element of the gametocidal locus proximal to a block of sub-telomeric heterochromatin on the long arm of chromosome 4Ssh of Aegilops sharonensis
The production of alien chromosome addition lines allows the transfer of useful genetic variation into elite wheat varieties from related wild species. However, some wild relatives of wheat, particularly those within the Sitopsis section of the genus Aegilops, possess chromosomes that are transmitted preferentially to the offspring when addition lines are generated. Species within the Sitopsis group possess the S genome, and among these species, Aegilops sharonensis (2n = 14, SshSsh) carries the Ssh genome which is closely related to the D genome of hexaploid wheat. Some S genome chromosomes carry gametocidal loci, which induce severe chromosome breakage in gametes lacking the gametocidal chromosome, and hence, result in gamete abortion. The preferential transmission of gametocidal loci could be exploited in wheat breeding, because linking gametocidal loci with important agronomic traits in elite wheat varieties would ensure retention of these traits through successive generations. In this study, we have mapped the breaker element of the gametocidal locus derived from Ae. sharonensis to the region immediately proximal to a block of sub-telomeric heterochromatin on the long arm of chromosome 4Ssh.
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2015-06
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| Online Access: | http://hdl.handle.net/10261/158785 http://dx.doi.org/10.13039/501100000268 http://dx.doi.org/10.13039/100004412 http://dx.doi.org/10.13039/501100000324 |
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dig-ias-es-10261-1587852021-12-28T16:37:48Z Mapping the ‘breaker’ element of the gametocidal locus proximal to a block of sub-telomeric heterochromatin on the long arm of chromosome 4Ssh of Aegilops sharonensis Knight, Emilie Binnie, Ashleigh Draeger, Tracie Moscou, Matthew J. Rey-Santomé, María Dolores Sucher, Justine Mehra, Surbhi King, Ian Moore, Graham Biotechnology and Biological Sciences Research Council (UK) Human Frontier Science Program Gatsby Charitable Foundation The production of alien chromosome addition lines allows the transfer of useful genetic variation into elite wheat varieties from related wild species. However, some wild relatives of wheat, particularly those within the Sitopsis section of the genus Aegilops, possess chromosomes that are transmitted preferentially to the offspring when addition lines are generated. Species within the Sitopsis group possess the S genome, and among these species, Aegilops sharonensis (2n = 14, SshSsh) carries the Ssh genome which is closely related to the D genome of hexaploid wheat. Some S genome chromosomes carry gametocidal loci, which induce severe chromosome breakage in gametes lacking the gametocidal chromosome, and hence, result in gamete abortion. The preferential transmission of gametocidal loci could be exploited in wheat breeding, because linking gametocidal loci with important agronomic traits in elite wheat varieties would ensure retention of these traits through successive generations. In this study, we have mapped the breaker element of the gametocidal locus derived from Ae. sharonensis to the region immediately proximal to a block of sub-telomeric heterochromatin on the long arm of chromosome 4Ssh. This research was supported by the Biotechnology and Biological Sciences Research Council (Grant number CA417). M. J. Moscou was supported by a fellowship from the Human Frontier Science Program (LT000218/2011-L) and funding from the Gatsby Charitable Foundation. Peer reviewed 2018-01-03T13:31:45Z 2018-01-03T13:31:45Z 2015-06 artículo http://purl.org/coar/resource_type/c_6501 Theoretical and Applied Genetics 128(6): 1049-1059 (2015) 0040-5752 http://hdl.handle.net/10261/158785 10.1007/s00122-015-2489-x 1432-2242 http://dx.doi.org/10.13039/501100000268 http://dx.doi.org/10.13039/100004412 http://dx.doi.org/10.13039/501100000324 25748115 en Publisher's version http://doi.org/10.1007/s00122-015-2489-x Sí open Springer |
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The production of alien chromosome addition lines allows the transfer of useful genetic variation into elite wheat varieties from related wild species. However, some wild relatives of wheat, particularly those within the Sitopsis section of the genus Aegilops, possess chromosomes that are transmitted preferentially to the offspring when addition lines are generated. Species within the Sitopsis group possess the S genome, and among these species, Aegilops sharonensis (2n = 14, SshSsh) carries the Ssh genome which is closely related to the D genome of hexaploid wheat. Some S genome chromosomes carry gametocidal loci, which induce severe chromosome breakage in gametes lacking the gametocidal chromosome, and hence, result in gamete abortion. The preferential transmission of gametocidal loci could be exploited in wheat breeding, because linking gametocidal loci with important agronomic traits in elite wheat varieties would ensure retention of these traits through successive generations. In this study, we have mapped the breaker element of the gametocidal locus derived from Ae. sharonensis to the region immediately proximal to a block of sub-telomeric heterochromatin on the long arm of chromosome 4Ssh. |
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Biotechnology and Biological Sciences Research Council (UK) |
| author_facet |
Biotechnology and Biological Sciences Research Council (UK) Knight, Emilie Binnie, Ashleigh Draeger, Tracie Moscou, Matthew J. Rey-Santomé, María Dolores Sucher, Justine Mehra, Surbhi King, Ian Moore, Graham |
| format |
artículo |
| author |
Knight, Emilie Binnie, Ashleigh Draeger, Tracie Moscou, Matthew J. Rey-Santomé, María Dolores Sucher, Justine Mehra, Surbhi King, Ian Moore, Graham |
| spellingShingle |
Knight, Emilie Binnie, Ashleigh Draeger, Tracie Moscou, Matthew J. Rey-Santomé, María Dolores Sucher, Justine Mehra, Surbhi King, Ian Moore, Graham Mapping the ‘breaker’ element of the gametocidal locus proximal to a block of sub-telomeric heterochromatin on the long arm of chromosome 4Ssh of Aegilops sharonensis |
| author_sort |
Knight, Emilie |
| title |
Mapping the ‘breaker’ element of the gametocidal locus proximal to a block of sub-telomeric heterochromatin on the long arm of chromosome 4Ssh of Aegilops sharonensis |
| title_short |
Mapping the ‘breaker’ element of the gametocidal locus proximal to a block of sub-telomeric heterochromatin on the long arm of chromosome 4Ssh of Aegilops sharonensis |
| title_full |
Mapping the ‘breaker’ element of the gametocidal locus proximal to a block of sub-telomeric heterochromatin on the long arm of chromosome 4Ssh of Aegilops sharonensis |
| title_fullStr |
Mapping the ‘breaker’ element of the gametocidal locus proximal to a block of sub-telomeric heterochromatin on the long arm of chromosome 4Ssh of Aegilops sharonensis |
| title_full_unstemmed |
Mapping the ‘breaker’ element of the gametocidal locus proximal to a block of sub-telomeric heterochromatin on the long arm of chromosome 4Ssh of Aegilops sharonensis |
| title_sort |
mapping the ‘breaker’ element of the gametocidal locus proximal to a block of sub-telomeric heterochromatin on the long arm of chromosome 4ssh of aegilops sharonensis |
| publisher |
Springer |
| publishDate |
2015-06 |
| url |
http://hdl.handle.net/10261/158785 http://dx.doi.org/10.13039/501100000268 http://dx.doi.org/10.13039/100004412 http://dx.doi.org/10.13039/501100000324 |
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| _version_ |
1777663139435773952 |