ABSTRACT
Ulmus elongata is a species of Sect. Chaetoptelea (Liemb.) S chneid in Ulmaceae, and it is an endangered wild plant listed in the second class of the Protected Plants in China. The complete chloroplast genome (cp) of U. elongata was reported in this study. The result showed that the cp genome was 159,230 bp in length including a large single-copy (LSC) 87,718 bp and a small single-copy (SSC) 18,690 bp, which were separated by two inverted repeats (IRs) of 26,411 bp with the typical quadripartite structure, respectively. The genome encoded 132 genes, including 87 protein-coding genes, 37 tRNA genes, and eight rRNA genes. The GC content was 35.57%. Chloroplast sequences were used for constructing phylogenetic tree to determine the evolutionary status of U. elongata. The maximum-likelihood phylogenetic analysis showed that U. elongata was clustered with five other Ulmus species, and the relationship between Ulmus and Zelkova was closest. The success of cp genome assembly of U. elongata has laid a foundation for the study of chloroplast molecular biology and can effectively promote the study of genetic breeding and molecular evolution of U. elongata.
ABSTRACT
Ulmus szechuanica is a species of Sect.Ulmus and Ser.Nitentes in Ulmaceae, and it is an endangered wild plant in China. The complete chloroplast genome (cp) of U. szechuanica was reported in this study. The result showed that the cp genome was 159,703 bp in length including a large single-copy (LSC) 88,039 bp and a small single-copy (SSC) 19,072 bp, which were separated by two inverted repeats (IRs) of 26,296 bp with the typical quadripartite structure, respectively. The genome encoded 131 genes, including 86 protein-coding genes, 37 tRNA genes, and 8 rRNA genes. The GC content was 35.53%. Chloroplast sequences were used for constructing phylogenetic tree to determine the evolutionary status of U. szechuanica. The maximum-likelihood phylogenetic analysis showed that U. szechuanica displayed a closer kinship to five other Ulmus species. This study provides important information for identification and conservation of species, germplasm resources utilization, and genetic engineering of Ulmus. The cp will provide a reference for future studies on species evolution of Ulmus.
ABSTRACT
Objective To establish the standard for the quality control of Shanlamei Granule.Method Chimonanthus nitens Oliver.was identified quantitativ ely by thin -layer chromatography(TLC),quercetin and kaempferol in Shanlamei Granule were determined by RP -HPLC.Results The TLC Spots were highly clear without the interference of negative control and were reproductive.The c alibration curve for quercetin was l inear(r =0.9999)in the range of 1.61～25.72?g /mL and the mean recovery was 98.89%,RSD being 1.21%(n=5);for Kaempferol ,the calibration cu rve was linear(r =0.9999)in the range of 2.16～34.60?g /mL and the mean recovery was 97.75%,RSD being 1.53%(n=5).Conclusion This method is accurate,simple,sensitive and reliable,and it can be used for the quality control of Shanlamei Granule.