Résumé
Angelica sinensis (Oliv.) Diels (Umbelliferae) is a well-known medicinal plant mainly distributed in Gansu Province of China. Its local and global demand is significant because of its food and medicinal applications. However, the early bolting rate of Angelica sinensis (Oliv.) Diels reaches 20 percent-60 percent, which seriously affects its food and medicinal qualities. Thus, differences in gene expression between the flower bud and sprout-shoot apical meristem underwent analysis, by means of cDNA-amplified restriction fragment length polymorphism, to better understand the flowering mechanism. 64 primer sets, each of which amplified to 60 transcript-derived fragments (TDFs), were used. Among these TDFs, 26 were expressed specifically in the flower bud. After cloning and sequencing, 32 distinct sequences were obtained from these 26 TDFs, and 25 were found with homologous sequences in databases. Confirmation of differential expression of 13 sequences was obtained by semi-quantitative RT-PCR, their showing higher expression levels in flower buds. These homologous sequences encode transposable elements, pentatricopeptide repeat-containing proteins, DNA-binding transcription factors, zinc finger (B-box type) family proteins, NADP-dependent sorbitol 6-phosphate dehydrogenase (S6PDH), amongst others.
Résumé
<p><b>OBJECTIVE</b>To study on the feasibility of cutting process of fresh Angelica sinensis.</p><p><b>METHOD</b>Qualitative and quantitative chemical analysis methods were used to evaluate the quality of different cutting processed A. sinensis.</p><p><b>RESULT</b>The contents of ligustilide and ferulic acid in the fresh cutting processed were both lower than the traditional cutting process, and the similarity of fingerprints of two different cutting processed A. sinensis were basically above 90%.</p><p><b>CONCLUSION</b>The method of cutting process of fresh A. sinensis was not suitable apparently, and the effect on clinical application of these two different cutting processed A. sinensis need more study.</p>