A new system of classification of the genus Clematis (Ranunculaceae)

Yang, Yong; Zhang, Liyan

doi:10.1360/aps040091

Cited by 42 publications

(90 citation statements)

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“…[1–3]. The largest genus Clematis has more than 300 species [12]. In some classification systems, this genus was treated as several genera on the basis of morphological, palynological, and anatomical data, e.g., Atragene L., Cheiropsis (DC.)…”

Section: Introductionmentioning

confidence: 99%

Phylogenetic reassessment of tribe Anemoneae (Ranunculaceae): Non-monophyly of Anemone s.l. revealed by plastid datasets

et al. 2017

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Morphological and molecular evidence strongly supported the monophyly of tribe Anemoneae DC.; however, phylogenetic relationships among genera of this tribe have still not been fully resolved. In this study, we sampled 120 specimens representing 82 taxa of tribe Anemoneae. One nuclear ribosomal internal transcribed spacer (nrITS) and six plastid markers (atpB-rbcL, matK, psbA-trnQ, rpoB-trnC, rbcL and rps16) were amplified and sequenced. Both Maximum likelihood and Bayesian inference methods were used to reconstruct phylogenies for this tribe. Individual datasets supported all traditional genera as monophyletic, except Anemone and Clematis that were polyphyletic and paraphyletic, respectively, and revealed that the seven single-gene datasets can be split into two groups, i.e. nrITS + atpB-rbcL and the remaining five plastid markers. The combined nrITS + atpB-rbcL dataset recovered monophyly of subtribes Anemoninae (i.e. Anemone s.l.) and Clematidinae (including Anemoclema), respectively. However, the concatenated plastid dataset showed that one group of subtribes Anemoninae (Hepatica and Anemone spp. from subgenus Anemonidium) close to the clade Clematis s.l. + Anemoclema. Our results strongly supported a close relationship between Anemoclema and Clematis s.l., which included Archiclematis and Naravelia. Non-monophyly of Anemone s.l. using the plastid dataset indicates to revise as two genera, new Anemone s.l. (including Pulsatilla, Barneoudia, Oreithales and Knowltonia), Hepatica (corresponding to Anemone subgenus Anemonidium).

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Section: Introductionmentioning

confidence: 99%

Phylogenetic reassessment of tribe Anemoneae (Ranunculaceae): Non-monophyly of Anemone s.l. revealed by plastid datasets

et al. 2017

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“…The following taxonomic studies increased the number of species: Johnson [23] and GreyWilson [24] independently summarized 314 and 297 species respectively; Wang and Li [1] depicted 355 species in the new classification of the genus, with around 150 species scattered in China. Four subgenera and ten sections are possibly defined based on a number of essential morphological characters of vegetative and floral organs.…”

Section: Chemotaxonomy Of Clematismentioning

confidence: 99%

“…Clematis is a genus of about 355 species [1] within the eudicot family Ranunculaceae. The genus consists of typically vigorous, woody, climbing vines/lianas, which are mainly distributed in the temperate zone of the north of Earth's equator.…”

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confidence: 99%

Chemical and biological research of Clematis medicinal resources

Hao

Xiao

et al. 2012

Chin. Sci. Bull.

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Clematis is a botanical source for various pharmaceutically active components, which has long been used in conventional medicine since the beginning of Chinese civilization. Increasing interest in Clematis medicinal resources has led to additional discoveries of triterpenoid saponins, flavonoids, coumarins, alkaloids and many other compounds in various Clematis species, and to investigations on their chemotaxonomy, molecular phylogeny and pharmacology. In continuation with our studies on Clematis chemistry and biology, we review the chemistry, chemotaxonomy, molecular biology and phylogeny of Clematis and their relevance to drug efficacy and drug development. Various databases and technology have been used in literature search in order to characterize the global scientific effort. It is essential to study more species for both the sustainable utilization of Clematis medicinal resources and finding novel compounds with potential clinical utility. Systems biology and omics technologies will play an increasingly important role in future medicinal research involving bioactive compounds of Clematis.

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“…C. terniflora belongs to Ranunclaceae , and is widely spread in Asia (especially eastern regions of China, i.e. Zhejiang Province), Europe, and Africa [21, 22]. Historically, it has long been used as folk medicine in China with important pharmaceutical properties, including anti-inflammatory [23, 24], anti-nociceptive, and antipyretic [25] activities.…”

Section: Introductionmentioning

confidence: 99%

Enhanced metabolic process to indole alkaloids in Clematis terniflora DC. after exposure to high level of UV-B irradiation followed by the dark

et al. 2016

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BackgroundIndole alkaloids, which characteristically contain an indole nucleus, have pharmaceutical potential in a diverse range of applications. UV-B can elicit the accumulation of indole alkaloids. The indole alkaloid (6-hydroxyl-1H-indol-3-yl) carboxylic acid methyl ester with cytotoxic activity was found to accumulate in Clematis terniflora DC. leaves after exposure to high level of UV-B irradiation and the dark. However, a more in-depth analysis of the process behind this response has not yet been performed. Therefore, an integrated approach involving metabolomic, proteomic, and transcriptomic analyses is essential to detail the biosynthetic mechanisms of the regulation of indole alkaloid under binary stress.ResultsIndole alkaloid (6-hydroxyl-1H-indol-3-yl) carboxylic acid methyl ester was found to increase 7-fold in C. terniflora leaves post-treatment with high level of UV-B irradiation followed by an incubation in the dark compared with pre-treatment. Analysis by proteomics and metabolomics indicates a decrease in photosynthesis and carbohydrate metabolism, respectively. By contrast, amino acid metabolism was activated by this binary stress, and, specifically, the genes involved in the metabolic pathway converting shikimate to L-tryptophan were concurrently upregulated. Metabolites involved in indole biosynthesis (shikimate metabolic) pathway were anthranilate, indole, and L-tryptophan, which increased 2-, 441-, and 1-fold, respectively. In addition, there was an increase of 2- and 9-fold in L-serine deaminase (L-SD) and L-tryptophan synthase activity in C. terniflora leaves after exposure to high level of UV-B irradiation and the dark.Conclusions(6-hydroxyl-1H-indol-3-yl) carboxylic acid methyl ester was found to increase in response to high level of UV-B irradiation followed by an incubation in the dark, implying that indole alkaloid biosynthesis was activated in C. terniflora leaves. Analysis of perturbations in metabolism in these leaves demonstrated that amino acid metabolism was specifically activated by this binary stress. In addition, an enhancement in serine level and L-SD activity was noted, which likely leads to an accumulation of pyruvate that, in turn, supplies shikimate metabolic pathway. The genes, metabolites, and L-tryptophan synthase activity that are involved in the metabolic pathway leading from shikimate to L-tryptophan all increased under the experimental binary stress, resulting in an enhancement of indole biosynthesis (shikimate metabolic) pathway. Therefore, the metabolic process to indole alkaloids in C. terniflora was enhanced after exposure to high level of UV-B irradiation followed by the dark.Electronic supplementary materialThe online version of this article (doi:10.1186/s12870-016-0920-3) contains supplementary material, which is available to authorized users.

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A new system of classification of the genus Clematis (Ranunculaceae)

Cited by 42 publications

References 0 publications

Phylogenetic reassessment of tribe Anemoneae (Ranunculaceae): Non-monophyly of Anemone s.l. revealed by plastid datasets

Phylogenetic reassessment of tribe Anemoneae (Ranunculaceae): Non-monophyly of Anemone s.l. revealed by plastid datasets

Chemical and biological research of Clematis medicinal resources

Enhanced metabolic process to indole alkaloids in Clematis terniflora DC. after exposure to high level of UV-B irradiation followed by the dark

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