Article(id=1304388141150916810, tenantId=1146029695717560320, journalId=1302319053441957962, issueId=1304388108988997783, articleNumber=null, orderNo=null, doi=10.7501/j.issn.0253-2670.2026.12.022, pmid=null, cstr=null, oa=null, hot=0, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1762099200000, receivedDateStr=2025-11-03, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1788919967209, onlineDateStr=2026-09-09, pubDate=null, pubDateStr=null, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1788919967209, onlineIssueDateStr=2026-09-09, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1788919967209, creator=13701087609, updateTime=1788919967209, updator=13701087609, issue=Issue{id=1304388108988997783, tenantId=1146029695717560320, journalId=1302319053441957962, year='2026', volume='57', issue='12', pageStart='4509', pageEnd='4948', issueExtLink='null', onlineDate='null', pubDate='1782576000000', pubDateStr='2026-06-28', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1788919959542, creator='13701087609', updateTime=1788923461082, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1304402795579330582, tenantId=1146029695717560320, journalId=1302319053441957962, issueId=1304388108988997783, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1304402795579330583, tenantId=1146029695717560320, journalId=1302319053441957962, issueId=1304388108988997783, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=4801, endPage=4810, ext={EN=ArticleExt(id=1304388142707003596, articleId=1304388141150916810, tenantId=1146029695717560320, journalId=1302319053441957962, language=EN, title=Cloning and preliminary functional exploration of PcCAS gene in Polygonatum cyrtonema, columnId=null, journalTitle=Chinese Traditional and Herbal Drugs, columnName=null, runingTitle=null, highlight=null, articleAbstract=Objective To clone the cycloartenol synthase (CAS) gene PcCAS from Polygonatum cyrtonema, perform bioinformatic and recombinant protein expression analyses, and determine its subcellular localization etc, thereby providing essential resources for further elucidating the pivotal role of PcCAS in saponin biosynthesis. Methods Based on the transcriptome data of P. cyrtonema, the PcCAS gene was screened and cloned, and bioinformatics approaches were employed to analyze the physicochemical properties, secondary structure, and tertiary structure of its encoded protein. qRT-PCR was used to analyze the tissue-specific expression of PcCAS. A prokaryotic expression vector was constructed and transferred into Escherichia coli for prokaryotic expression analysis. Yeast expression vectors were constructed and transformed into Pichia pastoris for subsequent yeast expression analysis. A subcellular-localization vector was built and infiltrated into Nicotiana benthamiana leaves for the analysis of heterologous expression in tobacco. Results The open reading frame (ORF) of PcCAS is 2 286 bp in length and encodes 759 amino acids. The protein is hydrophilic and lacks a signal peptide. The total saponin content and PcCAS expression level in the rhizome are significantly higher than those in the stem, leaf, and flower, indicating the expression level of PcCAS is positively related with the total saponin content. Yeast-expressed recombinant protein matched the expected molecular weight of 86 400. Subcellular-localization assays in tobacco leaves demonstrated that the PcCAS protein is predominantly localized to the endoplasmic reticulum. Conclusion PcCAS protein belongs to the OSC superfamily of enzymes and is localized in the cytoplasm, positively regulating the total saponin biosynthesis., authors=JIANG Xiaogang, WANG Hua, GUO Xiaoliang, GUO Jie, authorsList=JIANG Xiaogang, WANG Hua, GUO Xiaoliang, GUO Jie, authorCompany=null, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1304388142639894731, articleId=1304388141150916810, tenantId=1146029695717560320, journalId=1302319053441957962, language=CN, title=多花黄精环阿屯醇合酶PcCAS基因克隆及功能分析, columnId=1304140203967410414, journalTitle=中草药, columnName=药材与资源, runingTitle=null, highlight=null, articleAbstract=目的 克隆多花黄精Polygonatum cyrtonema的环阿屯醇合酶(cycloartenol synthase,CAS)基因PcCAS,对其进行生物信息学、重组蛋白表达以及亚细胞定位等分析,为进一步研究多花黄精皂苷生物合成机制提供基础资源。方法 基于多花黄精转录组数据筛选并克隆PcCAS基因,利用生物信息学方法分析其编码蛋白的理化性质、二级结构、三级结构等。利用qRT-PCR对PcCAS进行组织特异性表达分析。构建酵母表达载体转入毕赤酵母进行酵母表达分析。构建亚细胞定位表达载体并侵染烟草叶片,对PcCAS蛋白进行烟草异源表达分析。结果 PcCAS的开放阅读框(open reading frame,ORF)长度为2 286 bp,编码759个氨基酸,属于亲水蛋白,无信号肽。根茎中总皂苷含量与PcCAS表达量显著高于茎、叶、花组织,PcCAS表达量与总皂苷含量呈正相关。酵母表达得到的重组蛋白大小符合86 400的预期。烟草亚细胞定位显示PcCAS蛋白主要定位于内质网中。结论 PcCAS蛋白属于氧化角鲨烯环化酶(oxidosqualene cyclase,OSC)超家族,定位于内质网中,正向调控总皂苷物质的合成。, authors=蒋小刚1, 王华1, 郭晓亮1, 郭杰1, authorsList=蒋小刚, 王华, 郭晓亮, 郭杰, authorCompany=1 湖北省农业科学院中药材研究所农业农村部中药材生物学与栽培重点实验室,湖北 恩施 445000, correspAuthors=郭杰, authorNote=蒋小刚: 蒋小刚,男,硕士,助理研究员,研究方向为药用植物育种。E-mail:jxg154113@163.com, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=ymWK4fTwLzvQZv75/Fv8Mg==, pdfFileSize=1884151, pdfExtLink=null, 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Nguyen T. Plant triterpenoid scafolding: A tale of two cyclases [J]. Plant Physiol, 2022, 188: 1408-1409.
Dinday S, Ghosh S. Recent advances in triterpenoid pathway elucidation and engineering [J]. Biotechnol Adv, 2023, 68: 108214.
Wang P, Wei G, Feng L. Research advances in oxidosqualene cyclase in plants [J]. Forests, 2022, 13(9): 1382.
李珍, 王东浩, 姚伟, 等. 丹参环阿屯醇合酶基因克隆及表达分析[J]. 西北植物学报, 2013, 33(7): 1285-1291.
乔晶, 崔晟榕, 石宏武, 等. 罗汉果环阿屯醇合酶的同源建模、分子对接及催化环化的机理推测[J]. 生物技术通报, 2019, 35(2): 101-108.
李剑超, 戚文涛, 王晨, 等. 北柴胡环阿屯醇合酶基因的全长克隆与表达分析[J]. 分子植物育种, 2021, 19(9): 2899-2905.
袁梦求, 丁春邦, 陶亮, 等. 滇重楼环阿屯醇合酶基因的克隆及序列分析[J]. 中草药, 2012, 43(11): 2250-2256.
罗红梅, 张鑫, 牛云云, 等. 蛇足石杉HsCAS1基因克隆及序列分析[J]. 世界科学技术—中医药现代化, 2012, 14(1): 1159-1165.
管彦辉, 梁正维, 施扬, 等. 滇黄精炮制前后化学成分变化研究[J]. 中草药, 2024, 55(11): 3647-3658.
Livak K J, Schmittgen T D. Analysis of relative gene expression data using real-time quantitative PCR and the 2−ΔΔCt method [J]. Methods, 2001, 25(4): 402-408.
Floden A, Schilling E E. Using phylogenomics to reconstruct phylogenetic relationships within tribe Polygonateae (Asparagaceae), with a special focus on Polygonatum [J]. Mol Phylogenet Evol, 2018, 129: 202-213.
单春苗, 王晨凯, 施圆圆, 等. 多花黄精甾体皂苷生物合成途径分析及关键酶基因研究[J]. 中国中药杂志, 2020, 45(12): 2847-2857.
张雪, 王希付, 赵荣华, 等. 药用植物甾体皂苷生物合成途径研究进展[J]. 中国实验方剂学杂志, 2020, 26(14): 25-36.
Guerrieri A, Abedini D, White F, et al. Cycloartenol-derived triterpenoid pathway genes alter the root metabolome and microbiome in tomato [J]. Plant Physiol Biochem, 2025, 229: 110584.
闫宁, 龚达平, 张忠锋. 烟草甾醇合成代谢分子调控研究进展[J]. 中国烟草科学, 2015, 36(2): 110-117.
未丽, 刘建利. 植物蛋白质亚细胞定位相关研究概述[J]. 植物科学学报, 2021, 39(1): 93-101.
Milla P, Viola F, Oliaro Bosso S, et al. Subcellular localization of oxidosqualene cyclases from Arabidopsis thaliana, Trypanosoma cruzi, and Pneumocystis carinii expressed in yeast [J]. Lipids, 2002, 37(12): 1171-1176.
Xue Z Y, Duan L X, Liu D, et al. Divergent evolution of oxidosqualene cyclases in plants [J]. New Phytol, 2012, 193(4): 1022-1038.
王宝慧, 宋诗娟, 郭旭, 等. 黄芪OSC超基因家族的鉴定及表达分析[J]. 分子植物育种, 2025, 23(5): 1666-1674.)
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多花黄精环阿屯醇合酶PcCAS基因克隆及功能分析
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中草药 | 药材与资源 2026,57(12): 4801-4810
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中草药 |药材与资源 2026 , 57 (12) : 4801 -4810
多花黄精环阿屯醇合酶PcCAS基因克隆及功能分析
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蒋小刚1, 王华1, 郭晓亮1, 郭杰1
作者信息
    1 湖北省农业科学院中药材研究所农业农村部中药材生物学与栽培重点实验室,湖北 恩施 445000
通讯作者:
郭杰
作者简介:
蒋小刚: 蒋小刚,男,硕士,助理研究员,研究方向为药用植物育种。E-mail:jxg154113@163.com
Cloning and preliminary functional exploration of PcCAS gene in Polygonatum cyrtonema
  • JIANG Xiaogang, WANG Hua, GUO Xiaoliang, GUO Jie
  • Affiliations
    doi: 10.7501/j.issn.0253-2670.2026.12.022
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    目的 克隆多花黄精Polygonatum cyrtonema的环阿屯醇合酶(cycloartenol synthase,CAS)基因PcCAS,对其进行生物信息学、重组蛋白表达以及亚细胞定位等分析,为进一步研究多花黄精皂苷生物合成机制提供基础资源。方法 基于多花黄精转录组数据筛选并克隆PcCAS基因,利用生物信息学方法分析其编码蛋白的理化性质、二级结构、三级结构等。利用qRT-PCR对PcCAS进行组织特异性表达分析。构建酵母表达载体转入毕赤酵母进行酵母表达分析。构建亚细胞定位表达载体并侵染烟草叶片,对PcCAS蛋白进行烟草异源表达分析。结果 PcCAS的开放阅读框(open reading frame,ORF)长度为2 286 bp,编码759个氨基酸,属于亲水蛋白,无信号肽。根茎中总皂苷含量与PcCAS表达量显著高于茎、叶、花组织,PcCAS表达量与总皂苷含量呈正相关。酵母表达得到的重组蛋白大小符合86 400的预期。烟草亚细胞定位显示PcCAS蛋白主要定位于内质网中。结论 PcCAS蛋白属于氧化角鲨烯环化酶(oxidosqualene cyclase,OSC)超家族,定位于内质网中,正向调控总皂苷物质的合成。
    多花黄精  /  环阿屯醇合酶  /  基因克隆  /  总皂苷  /  亚细胞定位
    Objective To clone the cycloartenol synthase (CAS) gene PcCAS from Polygonatum cyrtonema, perform bioinformatic and recombinant protein expression analyses, and determine its subcellular localization etc, thereby providing essential resources for further elucidating the pivotal role of PcCAS in saponin biosynthesis. Methods Based on the transcriptome data of P. cyrtonema, the PcCAS gene was screened and cloned, and bioinformatics approaches were employed to analyze the physicochemical properties, secondary structure, and tertiary structure of its encoded protein. qRT-PCR was used to analyze the tissue-specific expression of PcCAS. A prokaryotic expression vector was constructed and transferred into Escherichia coli for prokaryotic expression analysis. Yeast expression vectors were constructed and transformed into Pichia pastoris for subsequent yeast expression analysis. A subcellular-localization vector was built and infiltrated into Nicotiana benthamiana leaves for the analysis of heterologous expression in tobacco. Results The open reading frame (ORF) of PcCAS is 2 286 bp in length and encodes 759 amino acids. The protein is hydrophilic and lacks a signal peptide. The total saponin content and PcCAS expression level in the rhizome are significantly higher than those in the stem, leaf, and flower, indicating the expression level of PcCAS is positively related with the total saponin content. Yeast-expressed recombinant protein matched the expected molecular weight of 86 400. Subcellular-localization assays in tobacco leaves demonstrated that the PcCAS protein is predominantly localized to the endoplasmic reticulum. Conclusion PcCAS protein belongs to the OSC superfamily of enzymes and is localized in the cytoplasm, positively regulating the total saponin biosynthesis.
    Polygonatum cyrtonema Hua  /  cycloartenol synthase  /  gene clone  /  total saponin  /  subcellular-localization
    蒋小刚, 王华, 郭晓亮, 郭杰. 多花黄精环阿屯醇合酶PcCAS基因克隆及功能分析. 中草药, 2026 , 57 (12) : 4801 -4810 . DOI: 10.7501/j.issn.0253-2670.2026.12.022
    JIANG Xiaogang, WANG Hua, GUO Xiaoliang, GUO Jie. Cloning and preliminary functional exploration of PcCAS gene in Polygonatum cyrtonema[J]. Chinese Traditional and Herbal Drugs, 2026 , 57 (12) : 4801 -4810 . DOI: 10.7501/j.issn.0253-2670.2026.12.022

      湖北省自然科学基金资助项目 (2025AFD159); 国家现代农业产业技术体系建设专项 (CARS-21); 中央财政林业科技推广示范项目 (鄂[2024]TG25号); 恩施州科技计划项目(启航专项) (33)

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    李剑超, 戚文涛, 王晨, 等. 北柴胡环阿屯醇合酶基因的全长克隆与表达分析[J]. 分子植物育种, 2021, 19(9): 2899-2905.
    袁梦求, 丁春邦, 陶亮, 等. 滇重楼环阿屯醇合酶基因的克隆及序列分析[J]. 中草药, 2012, 43(11): 2250-2256.
    罗红梅, 张鑫, 牛云云, 等. 蛇足石杉HsCAS1基因克隆及序列分析[J]. 世界科学技术—中医药现代化, 2012, 14(1): 1159-1165.
    管彦辉, 梁正维, 施扬, 等. 滇黄精炮制前后化学成分变化研究[J]. 中草药, 2024, 55(11): 3647-3658.
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    单春苗, 王晨凯, 施圆圆, 等. 多花黄精甾体皂苷生物合成途径分析及关键酶基因研究[J]. 中国中药杂志, 2020, 45(12): 2847-2857.
    张雪, 王希付, 赵荣华, 等. 药用植物甾体皂苷生物合成途径研究进展[J]. 中国实验方剂学杂志, 2020, 26(14): 25-36.
    Guerrieri A, Abedini D, White F, et al. Cycloartenol-derived triterpenoid pathway genes alter the root metabolome and microbiome in tomato [J]. Plant Physiol Biochem, 2025, 229: 110584.
    闫宁, 龚达平, 张忠锋. 烟草甾醇合成代谢分子调控研究进展[J]. 中国烟草科学, 2015, 36(2): 110-117.
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    Milla P, Viola F, Oliaro Bosso S, et al. Subcellular localization of oxidosqualene cyclases from Arabidopsis thaliana, Trypanosoma cruzi, and Pneumocystis carinii expressed in yeast [J]. Lipids, 2002, 37(12): 1171-1176.
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    doi: 10.7501/j.issn.0253-2670.2026.12.022
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    2种不同金属材料的力学参数

    Family
    属数
    Number of
    genus
    种数
    Number of
    species
    占总种数比例
    Percentage of
    total species (%)

    Genus
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    鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
    小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
    多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
    红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
    小菇属 Mycena 11 5.26
    光柄菇属 Pluteus 5 2.39
    红菇属 Russula 17 8.13
    栓菌属 Trametes 5 2.39
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