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A preliminary analysis of the phylogeny of the Swertiinae (Gentianaceae) based on ITS data | |
Liu, JQ ; Chen, ZD ; Lu, AM | |
2001 | |
发表期刊 | ISRAEL JOURNAL OF PLANT SCIENCES
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摘要 | To better understand the floral diversity and the phylogeny of the Swertiinae (Gentianaceae), the internal transcribed spacer (ITS) region of nrDNA for 17 species and one outgroup was sequenced. Our data suggest that corolla type, gland shape, and corolla appendage are poorly correlated with the ITS phylogeny. The genus Swertia s.l. and the rotate group previously recognized based on the corolla types and gland shapes are polyphyletic. Four genera with simple protruding glands and three taxa with corolla appendages are not clustered as the monophyletic groups. Four separate clades, corresponding to the four sections, were identified in Swertia s.1. Lomatogoniopsis with the simple protruding gland type of the tubular group closely related to Lomatogonium of the rotate group. The deeply lobing corolla and concave foveae may be ancestral in the Swertiinae, while the tubular corolla and the protruding glands may have undergone convergent evolution.; To better understand the floral diversity and the phylogeny of the Swertiinae (Gentianaceae), the internal transcribed spacer (ITS) region of nrDNA for 17 species and one outgroup was sequenced. Our data suggest that corolla type, gland shape, and corolla appendage are poorly correlated with the ITS phylogeny. The genus Swertia s.l. and the rotate group previously recognized based on the corolla types and gland shapes are polyphyletic. Four genera with simple protruding glands and three taxa with corolla appendages are not clustered as the monophyletic groups. Four separate clades, corresponding to the four sections, were identified in Swertia s.1. Lomatogoniopsis with the simple protruding gland type of the tubular group closely related to Lomatogonium of the rotate group. The deeply lobing corolla and concave foveae may be ancestral in the Swertiinae, while the tubular corolla and the protruding glands may have undergone convergent evolution. |
文献类型 | 期刊论文 |
条目标识符 | http://210.75.249.4/handle/363003/30545 |
专题 | 中国科学院西北高原生物研究所 |
推荐引用方式 GB/T 7714 | Liu, JQ,Chen, ZD,Lu, AM. A preliminary analysis of the phylogeny of the Swertiinae (Gentianaceae) based on ITS data[J]. ISRAEL JOURNAL OF PLANT SCIENCES, Liu JQ, Chen ZD, Lu AM.A preliminary analysis of the phylogeny of the Swertiinae (Gentianaceae) based on ITS data.ISRAEL JOURNAL OF PLANT SCIENCES,2001,49(4):301-308,2001. |
APA | Liu, JQ,Chen, ZD,&Lu, AM.(2001).A preliminary analysis of the phylogeny of the Swertiinae (Gentianaceae) based on ITS data.ISRAEL JOURNAL OF PLANT SCIENCES. |
MLA | Liu, JQ,et al."A preliminary analysis of the phylogeny of the Swertiinae (Gentianaceae) based on ITS data".ISRAEL JOURNAL OF PLANT SCIENCES (2001). |
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