五种石黄衣中次生代谢产物的高压液相色谱分析*

对于五种石黄衣Xanthoria中的次生代谢产物进行了高压液相色谱(HPLC)分析。它们是刺盘石黄衣Xanthoria alfredi、拟石黄衣X. fallax、丽石黄衣X. elegans、粉芽石黄衣X. sorediata和中国石黄衣X. mandschurica。分析结果表明,按照石黄酮(parietin)对拟石黄醛(fallacinal)与黄枝醇(teloschistin)在石黄衣中的相对含量百分比之商将五种石黄衣划分为E组 (Q>14) 和F组 (Q<1.20)。 其中丽石黄衣和粉芽石黄衣属于E组,裂片通常较狭窄,无假根;刺盘石黄衣和拟石黄衣属于F组,裂片通常较宽,具有假根。中国石黄衣中既有E组个体,又有F组个体。对于中国石黄衣的特殊现象仍需要进一步研究。此外,一份拟石黄衣标本的HPLC图谱亦显示了种内化学多样性。

THE HPLC ANALYSIS OF THE LICHEN SUBSTANCES IN FIVE SPECIES OF XANTHORIA (ASCOMYCOTA)

The HPLC analysis of the lichen substances from the five species of Xanthoria were performed in the present paper. They are Xanthoria alfredi, X. elegans, X. fallax, X. mandschurica and X. sorediata The results showed that the five species of Xanthoria examined can be divided into groups E and F according to the ratio quotient of parietin in species to that of fallacinal + teloschistin in species. The quotient of that in group E is >14, while in group F is <1.20. So, X. elegans and X. sorediata belong to group E, and the lobes of them usually narrower and lacking rhizines; and X. alfredi and X. fallax to group F, and the lobes usually larger in width and bearing rhizines. However, by way of exception, some specimens of X. mandschurica belong to group E, and others to group F. The phenomenon is discussed by the authors in the present article.