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Phylogenetic Relatedness of Several Agarwood-Producing Taxa (Thymelaeaceae) from Indonesia

机译:印尼产几种沉香木分类群(胸腺科)的亲缘关系

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摘要

Indonesia is home to several tree taxa that are harvested for agarwood. This highly valuable oleoresin ironically was the cause for some species to become vulnerable due to gluttonous human activity. However, information on the genetic diversity of these endangered trees is limited. In this study, 28 specimens representing eight species from two genera, Aquilaria and Gyrinops, were collected from ex-situ and in-situ populations in Indonesia. Phylogenetic analysis conducted on DNA sequences of the nuclear ribosomal internal transcribed spacer (ITS) and the trnL-trnF intergenic spacer regions, revealed that Aquilaria and Gyrinops are paraphyletic when Aquilaria cumingiana is excluded. The phylogenetic analysis for ITS and trnL-trnF showed capability to categorise agarwood-producing species based on their regions: East Indonesia and West Indonesia, using Wallace’s Line as the divider. In addition, we discuss challenges in species identification and taxonomy of agarwood-producing genera, and their conservation efforts in Indonesia.
机译:印度尼西亚是沉香木采伐的几种树木分类单元的所在地。具有讽刺意味的是,这种极有价值的油树脂是某些物种由于人类glut嘴活动而变得脆弱的原因。但是,有关这些濒危树木遗传多样性的信息有限。在这项研究中,从印度尼西亚的异地和原地种群中收集了28个标本,分别代表沉香和紫罗兰两个属的8个物种。对核糖体内部转录间隔区(ITS)和trnL-trnF基因间间隔区的DNA序列进行的系统发育分析表明,当排除黄瓜沉香时,沉香和紫罗兰属是共生的。对ITS和trnL-trnF的系统发育分析表明,可以使用华莱士氏线作为分隔线,根据沉香产树种对东印尼和西印尼地区进行分类。此外,我们讨论了沉香木属的物种识别和分类中的挑战,以及在印度尼西亚的保护工作。

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