Phytochemistry Research Laboratory, Faculty of Science, University of Strathdyde, G1 1XW, Glasgow, Scotland.
J Chem Ecol. 1984 Mar;10(3):387-401. doi: 10.1007/BF00988087.
Levels of total phenolics, condensed tannins, acid detergent fiber, pepsin/cellulase digestibility, and nitrogen in mature leaves of 26 individuals of the ant-plant,Barteria fistulosa, have been determined. Analysis of the results in terms of the presence or absence of ants and the position of the branch from which the leaves were collected showed no relationship with concentrations of phenolics or fiber and only a weak relationship with digestibility and nitrogen. By contrast, light intensity strongly influenced levels of phenolics, notably condensed tannins, so that mature leaves of individuals growing in direct sunlight were less digestible and appeared to be of lower quality as food for herbivores than did mature leaves of individuals in shaded positions. Possible reasons for the variation in condensed tannin levels are discussed.
已测定了 26 株蚁栖植物巴特里亚 fistulosa 成熟叶片中的总酚、缩合单宁、酸性洗涤剂纤维、胃蛋白酶/纤维素消化率和氮的水平。根据是否有蚂蚁以及采集叶片的枝条位置来分析结果，发现其与酚类物质或纤维的浓度没有关系，与消化率和氮的关系也很微弱。相比之下，光照强度强烈影响酚类物质的水平，尤其是缩合单宁，因此，在阳光直射下生长的个体的成熟叶片比在遮荫位置生长的个体的成熟叶片更难消化，作为食草动物的食物质量似乎也更低。讨论了缩合单宁水平变化的可能原因。
