目的:得到冬凌草高通量转录组数据,为挖掘冬凌草二萜类生物合成途径关键基因,研究冬凌草ESTSSR分子标记提供数据来源。方法:利用Illumina Hi Seq 4000高通量测序技术,采用Trinity的方法从头组装、序列拼接和去冗余处理;基于BLAST完成Uni...目的:得到冬凌草高通量转录组数据,为挖掘冬凌草二萜类生物合成途径关键基因,研究冬凌草ESTSSR分子标记提供数据来源。方法:利用Illumina Hi Seq 4000高通量测序技术,采用Trinity的方法从头组装、序列拼接和去冗余处理;基于BLAST完成Unigene编码蛋白NR功能注释、GO分类、KEGG代谢通路注释和分类、功能基因挖掘,SSR分子标记挖掘。结果:获得冬凌草叶与茎两种不同组织共12 GB转录组数据,得到3 7961个Unigene基因,平均长度1063 bp;得到冬凌草叶和茎转录组有60条unigenes参与萜类化合物骨架合成、6条unigene参与各种萜类化合物合成,有26条unigene参与二萜化合物合成途径,叶与茎两种组织中有差异表达的基因4565个,其中在茎中表达较高的为1668个,在叶中表达较高的有2697个,与二萜类化合物合成相关的差异表达基因有15个。结论:本研究为冬凌草二萜化合物生物合成途径中关键基因的挖掘和分子育种提供了数据信息,为深入研究冬凌草中冬凌草甲素等有效成分的生物合成途径及其调控机制提供基础。展开更多
Four diterpenoids, including a new ent-kaurane diterpene (1), were isolated from the rhizome of Aralia fargesii Franch. On the basis of chemical and spectral evidence (IR, EI-MS, HREI-MS, H-1-NMR, C-13-NMR and HMQC), ...Four diterpenoids, including a new ent-kaurane diterpene (1), were isolated from the rhizome of Aralia fargesii Franch. On the basis of chemical and spectral evidence (IR, EI-MS, HREI-MS, H-1-NMR, C-13-NMR and HMQC), the structure of compound 1 was established to be 17-acetoxy-16alpha-ent-kauran-19-oic acid The other three known compounds were identified as ent-pimera-8(14) 15-dien-19-oic acid (2), 16alpha-hydroxy-( -)-kauran-19-oic acid (3) and 16alpha-17-dihydroxy-ent-kauran-19-oic acid (4). The three known diterpenoids were obtained from this plant for the first time.展开更多
文摘Four diterpenoids, including a new ent-kaurane diterpene (1), were isolated from the rhizome of Aralia fargesii Franch. On the basis of chemical and spectral evidence (IR, EI-MS, HREI-MS, H-1-NMR, C-13-NMR and HMQC), the structure of compound 1 was established to be 17-acetoxy-16alpha-ent-kauran-19-oic acid The other three known compounds were identified as ent-pimera-8(14) 15-dien-19-oic acid (2), 16alpha-hydroxy-( -)-kauran-19-oic acid (3) and 16alpha-17-dihydroxy-ent-kauran-19-oic acid (4). The three known diterpenoids were obtained from this plant for the first time.
