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唇形科植物分类学取得重要进展 - 站长搜索
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唇形科植物分类学取得重要进展

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2021-01-12 09:58:08 转载来源: 科技日报

科技日报昆明1月11日电 (记者赵汉斌)唇形科植物具有重要的经济价值,在烹饪、药用、园艺、建材等方面有着广泛应用,与人类健康生活息息相关。记者11日从中国科学院昆明植物研究所获悉,我科研人员联合多国学者,在唇形科分类学方面取得重要进展

科技日报昆明1月11日电 (记者赵汉斌)唇形植物具有重要的经济价值,在烹饪、药用、园艺、建材等方面有着广泛应用,与人类健康生活息息相关。记者11日从中国科学院昆明植物研究所获悉,我科研人员联合多国学者,在唇形科分类学方面取得重要进展

唇形科是被子植物第六大科,全球有230余属7000余种,中国是其多样性分布中心之一。自20世纪90年代唇形科与马鞭草科进行系统重排以后,唇形科的范畴及分类系统发生了剧烈变化。近年来,随着分子系统学的发展,唇形科系统学研究取得了重要进展,其中中国分类学者作出了重要贡献。然而,荆芥亚科及筋骨草亚科在该科中的系统位置及与柚木亚科、豆腐柴亚科等其他亚科的亲缘关系仍未得到解决。

“为深入探讨唇形科的起源、性状演化、历史生物地理学及物种多样性的形成机制,构建唇形科稳固的系统发育关系迫在眉睫。”昆明植物研究所赵飞博士介绍,在此科学问题的驱动下,昆明植物研究所、江西农业大学唇形科研究团队联合中国、伊朗、美国、澳大利亚、挪威、奥地利、土耳其等八国的唇形科分类学者,对唇形科开展了全球范围的广泛取样。历经四年时间,获得了79属175个代表类群的叶绿体全基因组序列,取样覆盖了目前已界定的12个亚科。

基于79个蛋白质编码基因重建了唇形科系统发育框架,研究团队验证了12个亚科的单系性,明确了荆芥亚科、筋骨草亚科与其近缘类群的系统发育关系,提出了唇形科12个亚科22个族的新分类系统,其中本研究建立了三个新族。同时,还对各亚科和各族的分类历史、地理分布、形态特征、属种多样性等内容进行了全面阐述和系统总结。

此项研究成果于1月8日以“基于系统发育组学新的唇形科群落分类”为题,发表在生物学著名期刊《BMC生物学》上。这也是该刊上接受发表的第一篇分类学论文,主编及审稿人对研究结果给予了高度评价,认为这是一项“里程碑”式的工作。

标签: 唇形 植物 分类学 取得 重要进展


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