Mapping the 'breaker' element of the gametocidal locus proximal to a block of sub-telomeric heterochromatin on the long arm of chromosome 4S(sh) of Aegilops sharonensis.
Mapping the 'breaker' element of the gametocidal locus proximal to a block of sub-telomeric heterochromatin on the long arm of chromosome 4S(sh) of Aegilops sharonensis.
复制标题
DOI：
10.1007/s00122-015-2489-x
复制
发表时间：
2015-06
影响因子：
5.4
通讯作者：
Moore, Graham
中科院分区：
文献类型：
--
作者：
Knight, Emilie;Binnie, Ashleigh;Draeger, Tracie;Moscou, Matthew;Rey, Maria-Dolores;Sucher, Justine;Mehra, Surbhi;King, Ian;Moore, Graham
沙融山羊草（Aegilops sharonensis）的杀配子基因座的“breaker”元件（GcB）定位于染色体4S sh L上的亚端粒异染色质区。 外源染色体附加系的产生允许将有用的遗传变异从相关野生物种转移到优良小麦品种中。然而，小麦的一些野生近缘种，特别是山羊草属的Sitopsis部分内的那些，具有在产生附加系时优先传递给后代的染色体。Sitopsis组中的物种具有S基因组，其中沙融山羊草（2n = 14，SshSsh）携带Ssh基因组，该基因组与六倍体小麦的D基因组密切相关。一些S染色体组染色体携带杀配子基因座，其在缺乏杀配子染色体的配子中诱导严重的染色体断裂，从而导致配子败育。杀配子基因座的优先传递可以在小麦育种中利用，因为将杀配子基因座与优良小麦品种中的重要农艺性状相关联将确保这些性状通过连续世代保留。在这项研究中，我们已经定位了来自Ae的杀配子位点的breaker元件。sharonensis的染色体长臂上的亚端粒异染色质的块紧邻的区域4Ssh。本文的在线版本（doi：10.1007/s 00122 -015-2489-x）包含补充材料，可供授权用户使用。
The ‘breaker’ element ( GcB ) of the gametocidal locus derived from Aegilops sharonensis has been mapped to a region proximal to a block of sub-telomeric heterochromatin on chromosome 4S sh L. 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. The online version of this article (doi:10.1007/s00122-015-2489-x) contains supplementary material, which is available to authorized users.
登录
查看更多内容
影响因子：
14.8
作者：
Prieto, Pilar;Moore, Graham;Shaw, Peter
通讯作者：
Shaw, Peter
影响因子：
4.4
作者：
Salina, Elena A.;Sergeeva, Ekaterina M.;Chalhoub, Boulos
通讯作者：
Chalhoub, Boulos
影响因子：
3.7
作者：
Bouyioukos C;Moscou MJ;Champouret N;Hernández-Pinzón I;Ward ER;Wulff BB
通讯作者：
Wulff BB
影响因子：
5.4
作者：
Bertin, I;Zhu, JH;Gale, MD
通讯作者：
Gale, MD
影响因子：
1.6
作者：
Friebe, B;Zhang, P;Gill, BS
通讯作者：
Gill, BS