中药白及的化学成分研究

采用硅胶、ODS、Sephadex LH-20、RP-HPLC等色谱分离方法,对白及的90%乙醇提取物的乙酸乙酯萃取部位进行化学成分研究,根据化合物的波谱数据进行结构鉴定。从该植物中分离得到18个化合物,分别为5-羟基-2-(对羟基苄基)-3-甲氧基联苄(1)、shancigusin B(2)、shanciguol(3)、arundinan(4)、3',5-二羟基-2,4-二(对-羟基苄基)-3-甲氧基联苄(5)、arundin(6)、3,3'-二羟基-2-(4-羟基苄基)-5-甲氧基联苄(7)、3,3'-二羟基-2',6'-二(对羟苄基)-5-甲氧基联苄(8)、7-羟基-2,4-二甲氧基菲(9)、bleformin B(10)、nudol(11)、3,7-二羟基-2,4-二甲氧基菲(12)、2,7-二羟基-4-甲氧基-9,10-二氢菲(13)、bleformin D(14)、4,4'-二甲氧基-9,10-二氢-[6,1'-联菲]-2,2',7,7'-四醇(15)、gymconopin C(16)、(2,3-反式)-2-(4-羟基-3-甲氧基苯基)3-羟甲基-10-甲氧基-2,3,4,5-四氢菲[2,1-b]呋喃-7-醇(17)、shanciol(18)。其中化合物1为新的联苄类化合物,化合物2~6,9,15~18为首次该属植物中分离得到。     

竹叶兰中联苄类化学成分和抗肿瘤活性研究

目的:进行竹叶兰干燥根茎中的化学成分和体外抗肿瘤活性研究。方法:乙醇提取,硅胶、SephadexLH-20及ODS柱色谱分离,采用UV,NMR和MS等方法确定化合物的结构。采用MTT法测试化合物对人肝癌细胞Bel-7402和人胃癌细胞BGC-823抗肿瘤药理活性。结果:分得6个化合物,分别为2,7-二羟基-1-(对-羟基苄基)-4-甲氧基-9,10-二氢菲(2,7-di-hydroxy-1-(p-hydroxylbenzyl)-4-methoxy-9,10-dihydrophenanthrene,1),4,7-二羟基-1-(对-羟基苄基)-2-甲氧基-9,10-二氢菲[4,7-dihydroxy-1-(p-hydroxylbenzyl)-2-methoxy-9,10-dihydrophenanthrene,2],3,3’-二羟基-5-甲氧基-联苄(3,3’-dihydroxy-5-me-thoxybibenzyl,3),反式阿魏酸二十四烷酯[(2E)-2-propenoic acid,3-(4-hydroxy-3-methoxyphenyl)-tetracosyl ester,4],反式阿魏酸二十五烷酯[(2E)-2-propenoic acid,3-(4-hydroxy-3-methoxyphenyl)-pentacosyl ester,5],十五烷酸(pentadecyl acid,6)。体外抗肿瘤实验表明,联苄类化合物具有一定的抗肿瘤活性。结论:除化合物3外,另5个化合物均为首次从竹叶兰中分离得到,联苄类化合物均表现出一定的体外细胞毒活性,开环型联苄类化合物3的抗肿瘤活性强于闭环型联苄类化合物1和2。     

黄药子茋类化学成分的研究

目的 研究抗癌药物黄药子Dioscorea bulbifera的茋类化学成分。方法 采用硅胶柱色谱、ODS、Sephadex LH-20柱色谱以及HPLC制备方法进行分离纯化,通过理化性质及波谱数据分析鉴定了化合物的结构。结果 从黄药子95%乙醇提取物的醋酸乙酯萃取部位中分离得到14个茋类化合物,分别鉴定为2, 7-二羟基-3, 4-二甲氧基-9, 10-二氢菲（1）、2, 5-二羟基-4-甲氧基-9, 10-二氢菲（2）、latifolin（3）、2′, 3-二羟基-4, 5-二甲氧基联苄（4）、4-甲氧基菲-2, 3, 7-三醇（5）、3, 7-二羟基-2, 4-二甲氧基菲（6）、2′, 3-二羟基-5-甲氧基联苄（7）、3, 4′, 5-三羟基-3′-甲氧基联苄（8）、7-羟基-2, 3, 4-三甲氧基菲（9）、3, 3′-二羟基-5-甲氧基联苄（10）、2, 7-二羟基-4-甲氧基-9, 10-二氢菲（11）、2, 7-二羟基-3, 4-二甲氧基菲（12）、2, 7-二羟基-2, 4-二甲氧基-9, 10-二氢菲（13）、4, 7-二羟基-2-甲氧基-9, 10-二氢菲（14）。结论 化合物1～3、5～7、9、12、14均为首次从该植物中分离得到。     

独蒜兰的化学成分研究

应用硅胶、ODS、大孔树脂、葡聚糖凝胶Sephadex LH-20和HPLC等多种色谱分离方法相结合,从中药山慈菇来源之一——独蒜兰干燥假鳞茎的95%乙醇提取物的醋酸乙酯萃取部位中分离得到14个化合物, 其中菲及二氢菲类10个,联苄类2个,木脂素1个,甾醇1个;根据化合物的波谱数据鉴定化合物的结构为monbarbatain A（1）,2, 7, 2'-三羟基-4, 4', 7'-三甲氧基-1, 1'-二聚菲（2）,白芨烯 A（3）,pleionesin B（4）,shanciol H（5）,{7-hydroxy-7'-（4'-hydroxy-3'-methoxyphenyl）-4-methoxy-9, 10, 7', 8'-tetrahydrophenanthro [2, 3-b]furan-8'-yl} methyl acetate（6）,2, 7-二羟基-1-（对羟基苄基）-4-甲氧基菲（7）,2, 7-二羟基-1-（对-羟基苄基）-4-甲氧基-9, 10-二氢菲（8）,赫尔西酚（9）,贝母兰宁（10）,石斛酚（11）,山药素 Ⅲ（12）,丁香脂素（13）,麦角甾-4, 6, 8（14）, 22-四烯-3-酮（14）。其中化合物 1-3,9,13,14 为首次从该属植物中分离得到。     

节茎石仙桃醋酸乙酯部位的化学成分研究

目的研究节茎石仙桃Pholidotaarticulata全草醋酸乙酯部位的化学成分。方法利用硅胶和SephadexLH-20凝胶柱色谱进行分离纯化,通过NMR光谱数据分析和与标准品对比分析鉴定化合物结构。结果从节茎石仙桃78%乙醇提取物中分离得到17个化合物,分别鉴定为2,7-二羟基-9,10-二氢-六氢菲[4,5-环]吡喃(1)、2,6-二羟基-7-甲氧基-9,10-二氢-五氢菲[4,5-环]吡喃(2)、2,7-二羟基-6-甲氧基-9,10-二氢-五氢菲[4,5-环]吡喃(3)、2,7-二羟基-4-甲氧基-9,10-二氢菲(4)、4,7-二羟基-2-甲氧基-9,10-二氢菲(5)、2,5-二羟基-4-甲氧基-9,10-二氢菲(6)、石斛酚(7)、山药素Ⅲ(8)、5,3′-二羟基-3-甲氧基联苄(9)、cirrhopetalidin(10)、β-谷甾醇(11)、豆甾醇(12)、glut-5-en-3-ol(13)、月桂酸(14)、4-(4′-羟基-苄基)苯酚(15)、3-甲氧基苯甲醛(16)、反式桂皮酸(17)。结论化合物3～17为首次从该植物中分离得到,其中,化合物9、10、13和1...     

齿瓣石斛化学成分研究

 目的 研究齿瓣石斛的化学成分。方法 应用硅胶、凝胶和制备液相层析等方法分离得到单体化合物,通过理化常数和波谱分析鉴定化合物的结构。结果 从齿瓣石斛体积分数95%乙醇提取物中分离得到25个化合物,分别鉴定为3-羟基-4′,5-二甲氧基联苄(1),3,4′,5-三羟基-3′-甲氧基联苄(2),3,4′,5-三羟基联苄(3),N-反式-香豆酰酪胺(4), N-反式-对羟基苯乙基咖啡酰胺(5), 对羟基苯丙酰酪胺(6),N-顺式-香豆酰酪胺(7), 2,5-二羟基-4-甲氧基-9,10-二氢菲(8),2,4,7-三羟基-9,10-二氢菲(9),柚皮素(10),二氢松柏醇乙酸酯(11),对羟基桂皮酸乙酯(12),对羟基桂皮酸(13),对羟基苯丙酸(14),对羟基苯甲酸(15),原儿茶酸(16),erigeside Ⅱ(17),枸橼苦素(18),二氢丁香苷(19),leonuriside A(20),腺苷(21),β-谷甾醇(22),胡萝卜苷(23),(+)-丁香脂素-O-β-D-吡喃葡萄糖苷(24),蔗糖(25)。结论 化合物1~21,24~25均为首次从齿瓣石斛中分离得到,其中,化合物1为首次从石斛属植物中分得,化合物5、7、11、12、18为首次从兰科植物中分得。     

中缅八角化学成分研究

通过采用正相硅胶色谱,葡聚糖凝胶LH-20,Rp-C₁₈色谱,制备薄层色谱和半制备HPLC等多种分离方法,运用波谱方法对所分离的化合物进行鉴定,从中缅八角Illicium burmanicum中分离得到14个化合物;经波谱解析鉴定为7S,8R-赤式-4,7,9,9’-四羟基-3,3’-二甲氧基-8-O-4’-新木脂素（1）,7R,8R-苏式-4,7,9,9’-四羟基-3,3’-二甲氧基-8-O-4’-新木脂素（2）,polystachyol（3）,（－）-马尾松树脂醇（4）,angustanoic acid F（5）,反式水合蒎醇（6）,（3S,6R）-6,7-二羟基-6,7-二氢芳樟醇（7）,（3S,6S）-6,7-二羟基-6,7-二氢芳樟醇（8）,2,6-二甲氧基-4-烯丙基苯酚（9）,3,5-二甲氧基-4-羟基苯甲醛（10）,3-羟基-4-甲氧基苯甲醛（11）,香草酸甲酯（12）,莽草酸乙酯（13）和β-谷甾醇（14）。除化合物 14 外,以上所有化合物均为首次从中缅八角中分离得到。     

白及薄层色谱条件的改进和主要色谱斑点化学成分的鉴定

目的:改进白及药典薄层色谱条件,并对白及薄层色谱中主要斑点化学成分进行分离鉴定。方法:采用色谱法进行化学成分分离,采用波谱法进行结构鉴定。结果:优化的薄层色谱条件为氯仿—甲醇—水(6:0.5:0.05);并分离得到4个主要化合物,分别为2,7-二羟基-4-甲氧基-9,10-二氢菲;4,4′-二甲氧基-9,9′10,10′-四氢-2,2′,7,7′-四羟基-1,1′-联菲;4,4′-二甲氧基-9,10-二氢-2,2′,7,7′-四羟基-1,1′-联菲;1-(4-羟基苄基)-2-甲氧基-4,7-二羟基-9,10-二氢菲。结论:优化了白及薄层色谱条件,并对主要色谱斑点化学成分进行了鉴定。     

美洲刺人参酚类化学成分研究

利用正向硅胶、反相硅胶、Sephadex LH-20和制备液相色谱等多种分离技术进行分离纯化,依据理化性质和波谱数据鉴定结构,从美洲刺人参Oplopanax horridus的根皮醇提物乙酸乙酯和正丁醇萃取部位分离并鉴定了16个酚类化合物,其中7个苯丙素类成分阿魏酸（1）,3-乙酰咖啡酸（2）,咖啡酸（3）,3-甲氧基二氢肉桂醇-4-O-β-D-葡萄糖苷（4）,3-羟基二氢肉桂醇-4-O-β-D-葡萄糖苷（5）,3,5-二甲氧基肉桂醇-4-O-β-D-葡萄糖苷（6）,3-甲氧基肉桂醇-4-O-β-D-葡萄糖苷（7）;3个香豆素类成分,东莨菪内酯（8）,6,7-二羟基香豆素（9）,反式-3’-当归酰基-4’-乙酰基角型吡喃香豆素（10）;6个木脂素类成分,（+）-异落叶松脂素9’-O-β-D-葡萄糖苷（11）,3,3’-二甲氧基-4,9,9’-三羟基-4’,7-环氧-5’,8-木脂素-4,9-O-β-D-二葡萄糖苷（12）,（+）-5,5’-二甲氧基落叶松脂素 4’-O-β-D-葡萄糖苷（13）,（-）-5,5’-二甲氧基落叶松脂素 4’-O-β-D-葡萄糖苷（14）,（-）-松脂醇 4’-O-β-D-葡萄糖苷（15）,（±）-5,5’-二甲氧基落叶松脂素 9’-O-β-D-葡萄糖苷（16）。所有化合物均为首次从该植物中分离得到,除化合物4,6,12和13外,其余化合物均为首次从该属植物中报道。     

香茅中一个新羊毛脂烷类三萜化合物

研究香茅Cymbopogon citratus的化学成分。采用硅胶,Sephadex LH-20和高效液相色谱法从中分离得到8个化合物,包括1个新化合物,通过理化性质和波谱数据分析鉴定其结构分别为3β-甲氧基羊毛甾-9（11）-烯-27-醇（1）,3β-羟基羊毛脂- 9（11）-烯（2）,（24S）-3β-甲氧基羊毛甾-9（11）,25-二烯-24-醇（3）,8-羟基-新薄荷醇（4）,（2E）-3,7-二甲基-2,7-辛二烯-1,6-二醇（5）,（+）-香茅醇（6）,7-羟基薄荷醇（7）和十九烷酸乙酯（8）。其中化合物1为新化合物,化合物2~3为首次从该植物中分离得到。     

Effect of feeding Mucuna pruriens on helminth parasite infestation in lambs

Ethnopharmacological relevance

Mucuna pruriens is a tropical legume anecdotally reputed to have anthelmintic properties. This study was conducted to examine the validity of such claims.

Aim of the study

The aim of this study was to determine if ingestion of Mucuna seeds reduces helminth parasite infestation in lambs.

Materials and methods

Thirty-six Dorper × Katahdin ram lambs were assigned to three treatments, a cottonseed meal based control diet, a diet in which Mucuna replaced cottonseed meal and the control diet with levamisole (7.5 mg/kg body weight) administration. All diets were isonitrogenous and isocaloric. The 12 lambs in each treatment were assigned randomly to 4 pens, each containing 3 lambs. Lambs were trickle infected three times per week by gavage with infectious Haemonchus contortus larvae (2000 larvae/lamb) for 3 weeks.

Results

Levamisole treatment decreased fecal egg counts by 87% and abomasal worm counts by 83%. Mucuna intake did not statistically affect fecal egg counts or abomasal worm counts, though numerical (P > 0.10) reductions of 7.4% and 18.1%, respectively were evident. Anemia indicators, feed intake, and lamb growth were unaffected by treatment.

Conclusions

Levamisole reduced the Haemonchus parasite burden in lambs significantly but feeding Mucuna reduced the burden by levels unlikely to eliminate the clinical effects of parasitism.     

Investigation of plant extracts in traditional medicine of the Brazilian Cerrado against protozoans and yeasts

Aim of the study

To investigate the activities of the 217 plant extracts in traditional medicine of the Brazilian Cerrado against protozoans and yeasts.

Materials and methods

Plant extracts were prepared by the method of maceration using solvents of different polarities. The growth inhibition of chloroquine-resistant Plasmodium falciparum strain (FcB1) was determined by measuring the radioactivity of the tritiated hypoxanthine incorporated. Activity against Leishmania (Leishmania) chagasi and Trypanosoma cruzi was measured by the MTT colorimetric assay. The antifungal tests were carried out by using the CLSI method. The active extracts were tested also by cytotoxicity assay using NIH-3T3 cells of mammalian fibroblasts.

Results

Two hundred and seventeen extracts of plants were tested against Plasmodium falciparum. The eleven active extracts, belonging to eight plant species were evaluated against L. (L.) chagasi, Trypanosoma cruzi, yeasts and in NIH-3T3 cells. The results found in these biological models are consistent with the ethnopharmacological data of these plants. The ethyl acetate extract of Diospyros hispida root showed IC₅₀ values of 1 μg/mL against Plasmodium falciparum. This extract demonstrated no toxicity against mammalian cells, resulting in a significant selectivity index (SI) of 435.8. The dichloromethane extract of Calophyllum brasiliense root wood was active against Cryptococcus gattii LMGO 01 with MIC of 1.95 μg/mL; and Candida albicans ATCC 10231 and Candida krusei LMGO 174, both with MIC of 7.81 μg/mL. The same extract was also active against Plasmodium falciparum and L. (L.) chagasi with IC₅₀ of 6.7 and 27.6 μg/mL respectively. The ethyl acetate extract of Spiranthera odoratissima leaves was active against Cryptococcus gattii LMGO 01 with MIC of 31.25 μg/mL, and against Plasmodium falciparum with IC₅₀ of 9.2 μg/mL and Trypanosoma cruzi with IC₅₀ of 56.3 μg/mL.

Conclusion

The active extracts for protozoans and human pathogenic yeasts are considered promising to continue the search for the identification and development of leading compounds.     

真菌的中药干预研究近5年进展

近年来真菌感染率逐年上升,传统抗真菌药物易产生耐药性,而中药在防治真菌感染方面具有一定的优势。本文就近5年来中药对白念珠菌、皮肤癣菌、曲霉菌、马拉色菌、串珠镰孢菌、申克孢子丝菌、新生隐球菌及真菌生物膜的干预研究进展进行综述。     

厚朴与凹叶厚朴群体遗传学研究

目的:对厚朴与凹叶厚朴的群体遗传学进行研究,为中药厚朴的质量控制提供分子生药学方面的依据。方法:对厚朴与凹叶厚朴15个居群应用2个叶绿体基因间序列psbA-trnH和trnL-trnF进行PCR扩增并测序,计算厚朴与凹叶厚朴单倍型频率,用程序HaploNst分析遗传多样性和遗传结构,应用TCS version 1.13软件构建单倍型网状进化树。结果:厚朴与凹叶厚朴均无特有单倍型存在,但单倍型频率存在显著差异,已开始出现遗传分化的趋势,NST略大于GST。结论:厚朴与凹叶厚朴在遗传上已出现遗传分化的趋势,但尚未完全分化成彼此独立的单系。     

α-Glucosidase inhibitory activity of selected Philippine plants

Ethnopharmacological relevance

Antidesma bunius Spreng. (Phyllantaceae), Averrhoa bilimbi L. (Oxalidaceae), Biophytum sensitivum (L.) DC. (Oxalidaceae), Ceriops tagal (Perr.) C.B. Rob. (Rhizophoraceae), Kyllinga monocephala Rottb. (Cyperaceae), and Rhizophora mucronata Lam. (Rhizophoraceae) are used as remedies to control diabetes. In the present study, these plants were screened for their potential α-glucosidase inhibitory activity.

Materials and methods

The 80% aqueous ethanolic extracts were screened for their α-glucosidase enzyme inhibitory activity using yeast alpha glucosidase enzyme.

Results

Except for A. bilimbi with IC₅₀ at 519.86±3.07, all manifested a significant enzyme inhibitory activity. R. mucronata manifested the highest activity with IC₅₀ at 0.08±1.82 μg mL⁻¹, followed by C. tagal with IC₅₀ at 0.85±1.46 μg mL⁻¹ and B. sensitivum with IC₅₀ at 2.24±1.58 μg mL⁻¹.

Conclusion

This is the first report on the α-glucosidase inhibitory effect of the six Philippine plants; thus, partly defining the mechanism on why these medicinal plants possess antidiabetic properties.     

European medicinal polypores – A modern view on traditional uses

Ethnopharmacological relevance

In particular five polypore species, i.e. Laetiporus sulphureus, Fomes fomentarius, Fomitopsis pinicola, Piptoporus betulinus, and Laricifomes officinalis, have been widely used in central European folk medicines for the treatment of various diseases, e.g. dysmenorrhoea, haemorrhoids, bladder disorders, pyretic diseases, treatment of coughs, cancer, and rheumatism. Prehistoric artefacts going back to over 5000 years underline the long tradition of using polypores for various applications ranging from food or tinder material to medicinal–spiritual uses as witnessed by two polypore species found among items of Ötzi, the Iceman. The present paper reviews the traditional uses, phytochemistry, and biological activity of the five mentioned polypores.

Materials and methods

All available information on the selected polypore taxa used in traditional folk medicine was collected through evaluation of literature in libraries and searches in online databases using SciFinder and Web of Knowledge.

Results

Mycochemical studies report the presence of many primary (e.g. polysaccharides) and secondary metabolites (e.g. triterpenes). Crude extracts and isolated compounds show a wide spectrum of biological properties, such as anti-inflammatory, cytotoxic, and antimicrobial activities.

Conclusions

The investigated polypores possess a longstanding ethnomycological tradition in Europe. Here, we compile biological results which highlight their therapeutic value. Moreover, this work provides a solid base for further investigations on a molecular level, both compound- and target-wise.     

Antiplasmodial activity of extracts from seven medicinal plants used in malaria treatment in Cameroon

Aim of the study

In a search for new plant-derived biologically active compounds against malaria parasites, we have carried out an ethnopharmacological study to evaluate the susceptibility of cultured Plasmodium falciparum to extracts and fractions from seven Cameroonian medicinal plants used in malaria treatment. We have also explored the inhibition of the Plasmodium falciparum cysteine protease Falcipain-2.

Materials and methods

Plant materials were extracted by maceration in organic solvents, and subsequently partitioned or fractionated to afford test fractions. The susceptibility of erythrocytes and the W2 strain of Plasmodium falciparum to plant extracts was evaluated in culture. In addition, the ability of annonaceous extracts to inhibit recombinant cysteine protease Falcipain-2 was also assessed.

Results and discussion

The extracts showed no toxicity against erythrocytes. The majority of plant extracts were highly active against Plasmodium falciparumin vitro, with IC₅₀ values lower than 5 μg/ml. Annonaceous extracts (acetogenin-rich fractions and interface precipitates) exhibited the highest potency. Some of these extracts exhibited modest inhibition of Falcipain-2.

Conclusion

These results support continued investigation of components of traditional medicines as potential new antimalarial agents.     

中国石斛属植物文献计量研究

石斛是珍稀濒危中药材,目前正处于快速发展阶段。为全面了解我国石斛属植物研究的历史和发展现状,作者以1954～2010年"中国知网中国学术期刊网络出版总库"收录的石斛研究文献为依据,采用文献计量学的原理和方法,对我国石斛属植物研究文献从文献年代分布、期刊分布与被引频率、主题分布、研究对象分布、作者与研究机构分布等方面进行了统计与分析。结果表明,我国石斛研究明显分为起步(2个)、停滞、平稳发展、快速上升5个阶段;期刊分布存在离散性与集中性并存的现象,已形成核心期刊研究群,并以《中国中药杂志》、《中草药》和《陕西中医》为代表;研究主题广泛涉及临床与药理、组织培养与种苗繁育、成分分析等多个领域,已经形成比较稳定的研究机构和团队,但研究对象差异显著,以铁皮石斛、金钗石斛和霍山石斛最为集中。我国石斛属植物的研究已取得显著成果,但种植产业发展缓慢,供需矛盾突出,预计种苗繁育与人工种植、产品开发、化学与药理等方面是未来的研究热点,其文献报道仍将进一步上升。     

列当属、肉苁蓉属和草苁蓉属植物传统药物学调查

通过野外资源调查、整理各大标本馆标本原始记录和查阅文献记载等方法,系统整理、总结、归纳了列当属、肉苁蓉属和草苁蓉属民族药用植物种类、功效及民间使用情况,结果表明列当属6种药用植物在4个少数民族间作为7种民族药应用,草苁蓉属2种药用植物在8个少数民族间作为10种民族药应用,肉苁蓉属2种药用植物在3个少数民族间作为3种民族药应用,且同种药用植物常作不同民族药;发现3属植物的传统疗效主要集中在补肾壮阳、止血和止痛3个方面,并且该传统疗效与现代药理研究结果基本吻合。因此深入研究植物种类丰富的列当属植物资源对缓解肉苁蓉植物资源匮乏局面和扩大药源具有积极意义。     

金银花类药用植物IspE和IspH基因克隆和生物信息学分析

目的:克隆金银花类药用植物4-二磷酸胞苷-2-C-甲基赤藓糖激酶(4-diphosphocytidyl-2-C-methyl-D-erythritol kinase,IspE)和4-羟基-3-甲基-2-邻苯基二磷酸还原酶(4-hydroxy-3-methylbut-2-enyl diphosphate reductase,IspH)基因,并对其基因序列、蛋白特性和转录活性进行分析、比较.方法:从忍冬Lonicera japonica转录组测序结果中分析获得了IspE,IspH基因.分别以忍冬、红白忍冬L.japonica var.chinensis、红腺忍冬L.hypoglauca和水忍冬L.dasystyla新鲜花蕾为材料,利用RT-PCR技术克隆获得了4种金银花类药用植物IspE和IspH基因的全长cDNA.运用生物信息学分析软件,预测编码蛋白的结构和功能,并通过RT-PCR检测IspE和IspH在忍冬、红白忍冬、红腺忍冬、水忍冬花蕾中的转录情况.结果:金银花类药用植物IspE基因含有1个完整的开放阅读框,长度为1 221 bp,编码406个氨基酸;IspH含有一个完整的开放阅读框,长度为1 380 bp,编码459个氨基酸.IspE和IspH均为非分泌蛋白,均定位于叶绿体中.RT-PCR分析结果表明在忍冬、红腺忍冬和水忍冬的花蕾中IspE,IspH基因的转录水平没有显著差异,但红白忍冬花蕾中IspE,IspH基因的转录水平均显著高于忍冬.结论:克隆获得忍冬、红白忍冬、红腺忍冬和水忍冬中IspE,IspH基因,并证实了其在不同金银花类药用植物中的表达,为进一步研究IspE,IspH基因对萜类化合物生物合成和花香气以及颜色的影响奠定了基础.