北京林业大学学报2017，Vol.39Issue(9)：66-75,10.DOI:10.13332/j.1000--1522.20170144
不同季节遮荫对青钱柳生长和主要次生代谢物积累的影响
Effects of shading and season on growth and accumulation of major secondary metabolites in Cyclocarya paliurus
摘要
Abstract
Cyclocarya paliurus is a multiple function plant, and has been traditionally used for drug formulations or ingredients of functional foods in China. Previous studies have shown that the leaves of C. paliurus contain a large number of physiological active compounds, such as flavonoids and triterpenoids, which were known to carry important physiological activity in humans. Understanding the variation patterns in secondary metabolites accumulation, and the relationship between secondary metabolism and growth along the environmental gradients can provide meaningful information for the standardized cultivation of medicinal artificial forest of C. paliurus. Shading treatment was used for studying the effects of shading treatments and sampling time on growth and accumulation of important secondary metabolites in C. paliurus from June to November. Furthermore, the relationship between secondary metabolism and growth of C. paliurus was analyzed. Our results indicated that tree height growth of C. paliurus was improved under one-layer shading, while basal diameter growth was significantly decreased under shading conditions. Accumulation of flavonoids, total triterpenoid, and cyclocarioside Ⅰ were significantly restrained by shading treatments. However, accumulation of other two individual triterpenoids cyclocaric acid B and arjunolic acid was improved by shading treatments. Under natural light condition, flavonoid contents in August and October were significant higher than other seasons, and showed a bimodal variation pattern. While, the fastigium of flavonoid accumulation in leaves of C. paliurus was delayed by shading treatment. Furthermore, under different shading conditions, the highest contents of total and individual triterpenoids were detected in September, and showed an unimodal variation pattern. A significant negative relationship between growth and accumulation of total triterpenoid and arjunolic acid was found through correlation analysis.关键词
青钱柳/光照强度/收获季节/黄酮/三萜Key words
Cyclocarya paliurus/light intensity/harvest season/flavonoid/triterpenoid分类
农业科技引用本文复制引用
邓波,尚旭兰,刘桂华,徐丹丹,方升佐..不同季节遮荫对青钱柳生长和主要次生代谢物积累的影响[J].北京林业大学学报,2017,39(9):66-75,10.基金项目
国家自然科学基金项目(31270673)、安徽农业大学引进与稳定人才项目(yj2016-03)、2016年安徽农业大学省级大学生创新创业训练计划项目(201610364037). （31270673）
