Tsvetkova Natalia V, Tikhenko Natalia D, Hackauf Bernd, Voylokov Anatoly V
Department of Genetics and Biotechnology, St. Petersburg State University, Universiteskaya nab.7/9, St. Petersburg 199034, Russia.
Vavilov Institute of General Genetics Russian Academy of Sciences, St. Petersburg Branch, Universiteskaya nab.7/9, St. Petersburg 199034, Russia.
Plants (Basel). 2018 Jul 10;7(3):55. doi: 10.3390/plants7030055.
The post-zygotic reproductive isolation (RI) in plants is frequently based on the negative interaction of the parental genes involved in plant development. Of special interest is the study of such types of interactions in crop plants, because of the importance of distant hybridization in plant breeding. This study is devoted to map rye genes that are incompatible with wheat, determining the development of the shoot apical meristem in wheat⁻rye hybrids. Linkage analysis of microsatellite loci, as well as genes of embryo lethality () and hybrid dwarfness () was carried out in hybrids of Chinese Spring wheat with recombinant inbred lines as well as interline rye hybrids. and could be mapped proximal and distal of two closely linked EST-SSR markers, and , on rye chromosome 6R. Both rye genes are located on a segment of chromosome 6R that contains a breakpoint of evolutionary translocation between the ancestral chromosomes of homeologous groups 6 and 3. The obtained results are discussed in relation to genes interacting in developmental pathways as a class of causal genes of RI.
植物中的合子后生殖隔离（RI）通常基于参与植物发育的亲本基因之间的负相互作用。由于远缘杂交在植物育种中的重要性，对作物中此类相互作用类型的研究尤为有趣。本研究致力于定位与小麦不相容的黑麦基因，确定小麦-黑麦杂种中茎尖分生组织的发育情况。在中国春小麦与重组自交系以及系间黑麦杂种的杂交种中，对微卫星位点以及胚胎致死基因（）和杂种矮化基因（）进行了连锁分析。和可以定位在黑麦6R染色体上两个紧密连锁的EST-SSR标记和的近端和远端。这两个黑麦基因都位于6R染色体的一个片段上，该片段包含同源群6和3的祖先染色体之间进化易位的一个断点。结合发育途径中相互作用的基因，作为RI的一类因果基因，对所得结果进行了讨论。
