Study on secondary metabolic organ of echinacoside in herbs of Cistanche tubulosa / 中国中药杂志

<p><b>OBJECTIVE</b>It could give some theory support of confirming the secondary metabolism organ and regulation of echinacoside in Cistanche tubulosa by searching parasitic growth of C. tubulosa ahd echinacoside variation in different organs of host and parasite.</p><p><b>METHOD</b>The echinacoside content was analyzed by HPLC. The relationship between dry matter accumulation and echinacoside accumulation of C. tubulosa as the well as root diameter of host were comparatively analyzed.</p><p><b>RESULT</b>With the increase of dry matter accumulation of C. tubulosa, echinacoside accumulation increased significantly, and both of them were in significantly positive correlated with the root diameter of host. Echinacoside content in haustorium phloem was 15.53%, higher than that of haustorium xylem, C. tubulosa plant and other organs.</p><p><b>CONCLUSION</b>Haustorium phloem was probably the secondary metabolism organ of echinacoside in C. tubulosa.</p>

Inoculation experiments of Cistanche tubulosa on 8 introduced Tamarix species / 中国中药杂志

<p><b>OBJECTIVE</b>To analyze the inoculation ratio and echinacoside content of Cistanche tubulosa and provide theoretical basis for Tamarix introduction, resource protection and screening of C. tubulosa.</p><p><b>METHOD</b>8 Tamarix species were introduced in the North China Plain and inoculation of C. tubulosa was conducted on all species. Phenylethanoid glycosides fingerprinting and echinacoside content of C. tubulosa were analyzed by using HPLC.</p><p><b>RESULT</b>The adaptability of 8 Tamarix species were significantly different, phenylethanoid glycosides component of C. tubulosa on T. gansuensis and T. austromongolica were basically identical in contrast to T. chinensis, echinacoside content showed no obvious difference in C. tubulosa plant growing 4 months.</p><p><b>CONCLUSION</b>T. gansuensis and T. Austromongolica are suitable for the host introduction plant of C. tubulosa resource protection and screening in North China Plain.</p>