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SEM Studies on Vessels in selaginella

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SEM Studies on Vessels in Selaginella

Isolation and Identification of Chemical Constituents of selaginella tamariscina

第七届全国系统与进化植物学青年学术研讨会

作者： YANG Ping, LIU Hong-Mei, ZHANG Xian-Chun (Institute of Botany, Chinese Academy of Sciences, Beijing 100093)

Xylem from stems of six Chinese species of selaginella (S. indica, S. vardei, S. sanguinolenta, S. nummularifolia, S. albocincta and S. doederleinii) was studied by means of Scanning Electron Microscopy (SEM). Vessels were observed in the homophyllous species and some of the heterophyllous species of selaginella. The homophyllous species

关键词： selaginella Vessels

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Agricultural Science & Technology 2012年第7期13卷 1447-1449,1464页

作者：邵玉田杨超夏吾炯哈尔滨工业大学基础交叉学科研究院黑龙江哈尔滨150080

[Objective] This study aimed to isolate and identify the chemical constituents of selaginella tamariscina. [Method] The chemical compounds isolated from the whole plant of traditional Chinese herb S. tamariscina were purified through column chromatography and preparative thin-layer chromatography, and then chemical structures of the compounds were determined by NMR and mass spectrometry. Finally, the anticancer activity of the compounds 5, 6 and 7 was measured by MTT assay. [Result] Seven compounds, containing carnaubic acid (1), glucose (2), β-sitosterol (3), amentoflavone (4), selaginellin (5), selaginellin M (6) and selaginellin A (7), were isolated from methanol extracts of S. tamariscina. Among the three tested compounds, compound 7 exhibited the most effective activity to inhibit the HeLa cell growth. [Conclusion] This study will provide a basis for better development and utilization of selaginella plant resources.

关键词： selaginella Chemical constituent Selaginellin MTT assay HeLa cell

Phylogenetic Analysis of the Plant-specific Zinc Finger-Homeobox and Mini Zinc Finger Gene Families

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Journal of Integrative Plant Biology 2008年第8期50卷 1031-1045页

作者： Claude W. dePamphilis Department of Biology and the Huck Institutes of the Life Sciences Pennsylvania State University University ParkPA 16802 USA

Zinc finger-homeodomain proteins （ZHD） are present in many plants; however, the evolutionary history of the ZHD gene family remains largely unknown. We show here that ZHD genes are plant-specific, nearly all intronless, and related to MINI ZINC FINGER （MIF） genes that possess only the zinc finger. Phylogenetic analyses of ZHD genes from representative land plants suggest that *** plant ZHD genes occupy basal positions and angiosperm homologs form seven distinct clades. Several clades contain genes from two or more major angiosperm groups, including eudicots, monocots, magnoliids, and other basal angiosperms, indicating that several duplications occurred before the diversification of flowering plants. In addition, specific lineages have experienced more recent duplications. Unlike the ZHD genes, MIFs are found only from seed plants, possibly derived from ZHDs by loss of the homeodomain before the divergence of seed plants. Moreover, the MIF genes have also undergone relatively recent gene duplications. Finally, genome duplication might have contributed substantially to the expansion of family size in angiosperms and caused a high level of functional redundancy/overlap in these genes.

关键词： gene duplication gene family evolution Mini Zinc Finger Physcomitrella poplar selaginella zinc finger-homeodomain proteins

A review of the use of pteridophytes for treating human ailments

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2018年第2期19卷 85-119页

作者： Xavier-ravi BASKARAN Antony-varuvel GEO VIGILA Shou-zhou ZHANG Shi-xiu FENG Wen-bo LIAO State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources School of Life Sciences Sun Yat-sen University Shenzhen Key Laboratory of Southern Subtropical Plant Diversity Fairy Lake Botanical Garden/Chinese Academy of Sciences Department of Zoology St.Xavier's College

The aim of this review was to explore the pharmacological activity of early tracheophytes （pteridophytes） as an alternative medicine for treating human ailments. As the first vascular plants, pteridophytes （aka, ferns and fern allies） are an ancient lineage, and human beings have been exploring and using taxa from this lineage for over 2000 years because of their beneficial properties. We have documented the medicinal uses of pteddophytes belonging to thirty different families. The lycophyte selaginella sp. was shown in earlier studies to have multiple pharmacological activity, such as antioxidant, anti-inflammatory, anti-cancer, antidiabetic, antiviral, antimicrobial, and anti-Alzheimer properties. Among all the pteridophytes examined, taxa from the Pteridaceae, Polypodiaceae, and Adiantaceae ex- hibited significant medicinal activity. Based on our review, many pteridophytes have properties that could be used in alternative medicine for treatment of various human illnesses. Biotechnological tools can be used to preserve and even improve their bioactive molecules for the preparation of medicines against illness. Even though several studies have reported medicinal uses of ferns, the possible bioacUve compounds of several pteridophytes have not been identified. Furthermore, their optimal dosage level and treatment strategies still need to be determined. Finally, the future direc- tion of pteridophyte research is discussed.

关键词： Pteridophyte Fern Alternative medicine selaginella Human illness Bioactive molecule

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翠云草栽培管理技术

农业工程技术（温室园艺） 2015年第4期 46-46,48页

作者：杨俊杰河南省平顶山市园林处 467000

翠云草（selaginella uncinata）别名龙须、蓝草、蓝地柏、绿绒草,为卷柏科卷柏属多年生草本植物。茎伏地蔓生,极细软,分枝处常生不定根,多分枝。小叶卵形,孢子叶卵状三角形。

关键词：翠云草卷柏科绿绒草蓝地柏卵状三角形生长习性丛林中多年生草本半阴环境 selaginella