延胡索是我国传统中药材中的常用大宗药材之一,产地多且适应性强,其中浙江省为其主要的道地产区之一.延胡索生产中多采用自繁自种的无性繁殖,易产生种质退化等问题,导致其产量和品质良莠不齐.采用基因条形码ITS2序列检测技术、田间延胡...延胡索是我国传统中药材中的常用大宗药材之一,产地多且适应性强,其中浙江省为其主要的道地产区之一.延胡索生产中多采用自繁自种的无性繁殖,易产生种质退化等问题,导致其产量和品质良莠不齐.采用基因条形码ITS2序列检测技术、田间延胡索性状记录及高效液相色谱分析等技术,对浙江省3个主要品种来源的延胡索浙胡1号(YHS-1)、浙胡2号(YHS-2)和延胡索3号(农户自保种,YHS-3)进行延胡索的基源鉴定、田间性状分析和主要苄基异喹啉型生物碱的含量分析,以筛选浙江地区延胡索的优良品种.基源鉴定数据结果显示,YHS-2与延胡索Corydalis Yanhusuo W. T. Wang(NCBI编号MH260617.1和MH260618.1)的亲缘关系较近,YHS-3次之,而YHS-1亲缘关系较远.田间数据结果显示,与另外2个品种相比,YHS-2具有花多且密,花期短以及块茎产量高的优良生产性状.建立6种苄基异喹啉型生物碱的快速检测方法分析3个品种中生物碱的含量.结果显示,YHS-2中各生物碱的含量显著优于YHS-1和YHS-3(p<0.05).表明3个品种中YHS-2更为适合浙江地区的生存环境,可作为目前延胡索浙江栽培的优质品种推广种植和使用.展开更多
海蛇是我国名贵药材之一,新鲜捕捞的海蛇不易保存,一般立刻晒制保存,晒干后海蛇外观变化大,不宜再用外观鉴定,而基因条形码作为一种较新的分子鉴定方法则不再受外观变化困扰,适用于海蛇晒干制品的品种鉴定。该以平颌海蛇Lapemis hardwic...海蛇是我国名贵药材之一,新鲜捕捞的海蛇不易保存,一般立刻晒制保存,晒干后海蛇外观变化大,不宜再用外观鉴定,而基因条形码作为一种较新的分子鉴定方法则不再受外观变化困扰,适用于海蛇晒干制品的品种鉴定。该以平颌海蛇Lapemis hardwickii、环纹海蛇Hydrophis fasciatus、尖尾海蛇Aipysurus eydouxii、贝尔切海蛇H.belcheri和兰伯特海蛇H.lamberti等5种海蛇为研究对象,通过提取实验和基因测序技术测定了这5种海蛇的COI和16S r DNA基因序列,对这些序列进行互相比对并用相似性搜索算法评价5条序列的鉴定成功率。研究显示,16S r DNA基因条形码能初步区分海蛇种属,COI基因条形码序列种内种间差异明显,能进一步区分海蛇品种。因此表明COI序列可以作为海蛇晒干制品的品种鉴定方法。展开更多
In this study,we integrated a DNA barcoding project with an ecological survey on intertidal polychaete communities and investigated the utility of CO1 gene sequence as a DNA barcode for the classification of the inter...In this study,we integrated a DNA barcoding project with an ecological survey on intertidal polychaete communities and investigated the utility of CO1 gene sequence as a DNA barcode for the classification of the intertidal polychaetes.Using 16S rDNA as a complementary marker and combining morphological and ecological characterization,some of dominant and common polychaete species from Chinese coasts were assessed for their taxonomic status.We obtained 22 haplotype gene sequences of 13 taxa,including 10 CO1 sequences and 12 16S rDNA sequences.Based on intra-and inter-specific distances,we built phylogenetic trees using the neighbor-joining method.Our study suggested that the mitochondrial CO1 gene was a valid DNA barcoding marker for species identification in polychaetes,but other genes,such as 16S rDNA,could be used as a complementary genetic marker.For more accurate species identification and effective testing of species hypothesis,DNA barcoding should be incorporated with morphological,ecological,biogeographical,and phylogenetic information.The application of DNA barcoding and molecular identification in the ecological survey on the intertidal polychaete communities demonstrated the feasibility of integrating DNA taxonomy and ecology.展开更多
文摘延胡索是我国传统中药材中的常用大宗药材之一,产地多且适应性强,其中浙江省为其主要的道地产区之一.延胡索生产中多采用自繁自种的无性繁殖,易产生种质退化等问题,导致其产量和品质良莠不齐.采用基因条形码ITS2序列检测技术、田间延胡索性状记录及高效液相色谱分析等技术,对浙江省3个主要品种来源的延胡索浙胡1号(YHS-1)、浙胡2号(YHS-2)和延胡索3号(农户自保种,YHS-3)进行延胡索的基源鉴定、田间性状分析和主要苄基异喹啉型生物碱的含量分析,以筛选浙江地区延胡索的优良品种.基源鉴定数据结果显示,YHS-2与延胡索Corydalis Yanhusuo W. T. Wang(NCBI编号MH260617.1和MH260618.1)的亲缘关系较近,YHS-3次之,而YHS-1亲缘关系较远.田间数据结果显示,与另外2个品种相比,YHS-2具有花多且密,花期短以及块茎产量高的优良生产性状.建立6种苄基异喹啉型生物碱的快速检测方法分析3个品种中生物碱的含量.结果显示,YHS-2中各生物碱的含量显著优于YHS-1和YHS-3(p<0.05).表明3个品种中YHS-2更为适合浙江地区的生存环境,可作为目前延胡索浙江栽培的优质品种推广种植和使用.
文摘海蛇是我国名贵药材之一,新鲜捕捞的海蛇不易保存,一般立刻晒制保存,晒干后海蛇外观变化大,不宜再用外观鉴定,而基因条形码作为一种较新的分子鉴定方法则不再受外观变化困扰,适用于海蛇晒干制品的品种鉴定。该以平颌海蛇Lapemis hardwickii、环纹海蛇Hydrophis fasciatus、尖尾海蛇Aipysurus eydouxii、贝尔切海蛇H.belcheri和兰伯特海蛇H.lamberti等5种海蛇为研究对象,通过提取实验和基因测序技术测定了这5种海蛇的COI和16S r DNA基因序列,对这些序列进行互相比对并用相似性搜索算法评价5条序列的鉴定成功率。研究显示,16S r DNA基因条形码能初步区分海蛇种属,COI基因条形码序列种内种间差异明显,能进一步区分海蛇品种。因此表明COI序列可以作为海蛇晒干制品的品种鉴定方法。
基金Supported by the National Natural Science Foundation of China(No.40730847&40906063)the Student Research Training Program of Ocean University of China(No.0811010509)
文摘In this study,we integrated a DNA barcoding project with an ecological survey on intertidal polychaete communities and investigated the utility of CO1 gene sequence as a DNA barcode for the classification of the intertidal polychaetes.Using 16S rDNA as a complementary marker and combining morphological and ecological characterization,some of dominant and common polychaete species from Chinese coasts were assessed for their taxonomic status.We obtained 22 haplotype gene sequences of 13 taxa,including 10 CO1 sequences and 12 16S rDNA sequences.Based on intra-and inter-specific distances,we built phylogenetic trees using the neighbor-joining method.Our study suggested that the mitochondrial CO1 gene was a valid DNA barcoding marker for species identification in polychaetes,but other genes,such as 16S rDNA,could be used as a complementary genetic marker.For more accurate species identification and effective testing of species hypothesis,DNA barcoding should be incorporated with morphological,ecological,biogeographical,and phylogenetic information.The application of DNA barcoding and molecular identification in the ecological survey on the intertidal polychaete communities demonstrated the feasibility of integrating DNA taxonomy and ecology.
