建立适宜木薯DNA的SRAP扩增体系,为木薯分子标记和基因图谱的构建打下基础。以木薯基因组DNA为模板,采用序列相关扩增多态性(sequence related amplified polymorphism,SRAP)技术对木薯DNA进行PCR扩增,逐级优化反应参数。最佳SRAP-PCR...建立适宜木薯DNA的SRAP扩增体系,为木薯分子标记和基因图谱的构建打下基础。以木薯基因组DNA为模板,采用序列相关扩增多态性(sequence related amplified polymorphism,SRAP)技术对木薯DNA进行PCR扩增,逐级优化反应参数。最佳SRAP-PCR反应体系(10Ll)为:DNA(50ng/μl)0.5μl、10×PCR buffer(Mg2+)1.0μl、dNTPs(20mM)0.2μl、primer(50ng)0.3μl、Taq polymerase(5U/μl)0.2μl。该程序和体系能很好地满足木薯基因组SRAP扩增的要求,SRAP标记能够很好应用于木薯遗传研究。展开更多
Investigations on the chemical constituents from the ethanol extract of the agarwood originating from Aquilaria filaria led to the isolation of 26 compounds by column chromatography,including silica gel,Sephadex LH-20...Investigations on the chemical constituents from the ethanol extract of the agarwood originating from Aquilaria filaria led to the isolation of 26 compounds by column chromatography,including silica gel,Sephadex LH-20,and semi-preparative high-performance liquid chromatography.Their structures were determined to beβ-sitostenone(1),24α-ethyl-cholestan-3α-ol(2),ergosta-4,6,8(14),22-tetraene-3-one(3),gypsogenin(4),hederagenin(5),17αH-trisnorhopanone(6),lupeol(7),friedelin(8),(-)-episyringaresinol(9),(-)-syringaresinol(10),5-hydroxy-7,4′-dimethoxyflavone(11),5,4’-dihydroxy-7,3′-dimethoxyflavone(12),2′-hydroxy-4,3′,6′,4′′-tetramethoxy-p-terphenyl(13),scopularide A(14),4-(4-hydroxyphenyl)butan-2-one(15),zingerone(16),coniferaldehyde(17),scopoletin(18),acetovanillon(19),isovanillin(20),vanillin(21),p-hydroxybenzaldehyde(22),p-hydroxybenzoic acid(23),protocatechuic acid(24),vanillic acid(25)and 4,5-dihydroxy-3-methoxybenzoic acid(26)by using spectroscopic techniques.All compounds were isolated from agarwood of A.filaria for the first time,and this was also the first report about the isolation of compounds 2,4,6,7,9,10,13-15,17-20,22,24 and 26 from agarwood and Aquilaria plants.展开更多
基金National Key Research & Development Program of China (Grant No. 2018YFC1706400)National Natural Science Foundation of China (Grant No. 31870668)China Agriculture Research System (Grant No. CARS-21)。
文摘Investigations on the chemical constituents from the ethanol extract of the agarwood originating from Aquilaria filaria led to the isolation of 26 compounds by column chromatography,including silica gel,Sephadex LH-20,and semi-preparative high-performance liquid chromatography.Their structures were determined to beβ-sitostenone(1),24α-ethyl-cholestan-3α-ol(2),ergosta-4,6,8(14),22-tetraene-3-one(3),gypsogenin(4),hederagenin(5),17αH-trisnorhopanone(6),lupeol(7),friedelin(8),(-)-episyringaresinol(9),(-)-syringaresinol(10),5-hydroxy-7,4′-dimethoxyflavone(11),5,4’-dihydroxy-7,3′-dimethoxyflavone(12),2′-hydroxy-4,3′,6′,4′′-tetramethoxy-p-terphenyl(13),scopularide A(14),4-(4-hydroxyphenyl)butan-2-one(15),zingerone(16),coniferaldehyde(17),scopoletin(18),acetovanillon(19),isovanillin(20),vanillin(21),p-hydroxybenzaldehyde(22),p-hydroxybenzoic acid(23),protocatechuic acid(24),vanillic acid(25)and 4,5-dihydroxy-3-methoxybenzoic acid(26)by using spectroscopic techniques.All compounds were isolated from agarwood of A.filaria for the first time,and this was also the first report about the isolation of compounds 2,4,6,7,9,10,13-15,17-20,22,24 and 26 from agarwood and Aquilaria plants.
