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首页> 外文期刊>Genetic Resources and Crop Evolution >Phylogeography of the bitter apple, Citrullus colocynthis.
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Phylogeography of the bitter apple, Citrullus colocynthis.

机译：苦苹果Citrullus colocynthis的系统记录。

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Citrullus colocynthis is a desert plant with a rich history as an important medicinal plant and as a source of valuable oil. Its small seeds appear in several early Egyptian, Lybian and Near Eastern sites from about 4000 BC. Sequence information deduced from several polymorphic intergenic cpDNA regions and a relatively large intron (0.6 kb) at the transit sequence of single-copy nuclear gene G3pdh showed clear geographical structure among C. colocynthis accessions. Region specific haplotypes with different nucleotide substitution rates were observed. The highest number of substitution events occurred in C. colocynthis selections from India and Pakistan, the lowest number in accessions from the Middle Eastern and West Asian region (Iran, Israel, and Afghanistan). Population level variation at the noncoding cpDNA and G3pdh intron are congruent. Indels at two cpDNA regions and unique nuclear and cpDNA substitutions indicate the direction of migration from the African continent into the Middle East and the Far East. C. colocynthis collected in Australia showed the highest sequence homology with accessions from Cyprus and Morocco. Divergent lineages are restricted to portions of the species range. Possible causes of this pattern include restricted migration and gene flow between regions, and differences in population size of divergent haplotypes based on differential patterns of environmental adaptation.
机译：柑桔（Citrullus colocynthis）是一种沙漠植物，作为重要的药用植物和宝贵的油源，具有悠久的历史。它的小种子大约在公元前4000年出现在埃及，利比亚和近东的一些早期遗址中。从单拷贝核基因G3pdh的转运序列中的几个多态性基因间cpDNA区域和一个相对较大的内含子（0.6 kb）推导的序列信息显示出C. colocynthis种质之间清晰的地理结构。观察到具有不同核苷酸取代率的区域特异性单倍型。来自印度和巴基斯坦的co鱼C. colocynthis选择发生的次数最多，来自中东和西亚地区（伊朗，以色列和阿富汗）的种的发生次数最少。非编码cpDNA和G3pdh内含子的种群水平变异是一致的。两个cpDNA区域的插入缺失以及独特的核和cpDNA取代指示了从非洲大陆向中东和远东地区迁移的方向。在澳大利亚收集的C. colocynthis与塞浦路斯和摩洛哥的种质显示出最高的序列同源性。发散谱系仅限于物种范围的一部分。这种模式的可能原因包括区域之间迁移受限和基因流动受限，以及基于环境适应差异模式的单倍型种群大小差异。

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