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首页> 外文期刊>Theoretical and Applied Genetics >Distribution of Hordoindoline genes in the genus Hordeum
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Distribution of Hordoindoline genes in the genus Hordeum

机译：大麦属中大胆吲哚基因的分布

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Hordoindoline (Hin) genes, which are known to comprise Hina, Hinb-1, and Hinb-2, are associated with grain hardness in barley. However, the interspecific variation in the Hin genes in the genus Hordeum has not been studied in detail. We examined the variation in Hin genes and used it to infer the phylogenetic relationships between the genes found in two H. vulgare subspecies (cultivated barley and H. vulgare subsp. spontaneum) and 10 wild relatives (H. bogdanii, H. brachyantherum, H. bulbosum, H. chilense, H. comosum, H. marinum, H. murinum, H. patagonicum, H. pusillum, and H. roshevitzii). The Hina and Hinb genes of these species were amplified by PCR. We found two Hinb genes in three wild species (H. bogdanii, H. brachyantherum, and H. roshevitzii) and preliminarily named them Hinb-A and Hinb-B. Cluster analysis showed that the 17 Hinb genes present in Hordeum formed two distinct clusters (named A and B). Seven Hinb genes were included in Cluster-A, and 10 Hinb genes were included in Cluster-B. All Hinb-A genes were included in Cluster-A, while all of the Hinb-B genes were included in Cluster-B. In contrast, the Hinb-1 and Hinb-2 genes in H. vulgare were included in Cluster-B. These results suggest that the Hinb genes duplicated during the early stages of diversification in the genus Hordeum. On the other hand, the Hinb-1 and Hinb-2 genes in H. vulgare seem to have been generated by a duplication of the Hinb gene after the split of the lineages leading to H. vulgare and H. bulbosum.
机译：已知包含Hina，Hinb-1和Hinb-2的Hordoindoline（Hin）基因与大麦的谷物硬度有关。但是，尚未详细研究大麦属Hin基因的种间变异。我们检查了Hin基因的变异，并用其推断出在两个H. vulgare亚种（栽培的大麦和H. vulgare亚种spontaneum）和10个野生近缘种（H. bogdanii，H。brachyantherum，H鳞茎，H。chilense，H。comosum，H。marinum，H。murinum，H。patagonicum，H。pusillum和H. roshevitzii）。通过PCR扩增这些物种的Hina和Hinb基因。我们在三个野生物种（H. bogdanii，H。brachyantherum和H. roshevitzii）中发现了两个Hinb基因，并初步命名为Hinb-A和Hinb-B。聚类分析表明，在大麦中存在的17个Hinb基因形成两个不同的簇（命名为A和B）。群集A中包含7个Hinb基因，群集B中包含10个Hinb基因。所有的Hinb-A基因都包含在Cluster-A中，而所有的Hinb-B基因都包含在Cluster-B中。相反，H。vulgare中的Hinb-1和Hinb-2基因包含在Cluster-B中。这些结果表明，Hindb基因在大麦属的多样化早期阶段重复。另一方面，在H. vulgare中的Hinb-1和Hinb-2基因似乎是由谱系分裂导致H. vulgare和H. bulbosum分裂后的Hinb基因重复产生的。

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