安徽农业科学Issue(19)：10196-10199,10339,5.
外源酚酸对铝处理下桉树幼苗叶片解剖结构与光合特征的影响
Effects of Exogenous Phenolic Acids on the Leaf Anatomical Structure and Photosynthetic Characteristics of Eucaltptus seedling under aluminum stress
摘要
Abstract
[Objective] Study the effects of exogenous phendic acids on the leaf anatomical structure and photosy-nthetic characteristics of Eucalyptus seedling under aluminum stress. [Method]Eucalyptus clones (Eucalyptus grandis × E. urophylla Guanglin No. 9) was used to study the effects of five exogenous phenolic acids (P-hydroxybenzoic acid, Vanill acid, Benzoic acid, Ferulic acid and Cinnamic acid ) and aluminum treatment on the leaf anatomical structure and photosynthetic characteristics. The treatments were 120 mg/L Al3+ and pH 3. 0 added 100 mg/L exogenous phenolic acids, [ Result] The leaf thickness, tissue thickness and sponge tissue thickness decreased, P/1 and CTK increased, SR reduced under aluminum treatments. Aluminum treatment had inhibited effected photosynthesis of the Eucalyptus leaves. The net photosynthetic rate and transpiration rate significantly reduced, chlorophyll content decreased. Benzoic acid showed the most direct aluminum stress alleviation with the significantly increasing photosynthetic rate and transpiration rate. At the same time, photosynthetic rate increased after vanill acid treatment, transpiration rate increased after P-hydroxybenzoic acid treatments, chlorophyll content increased after ferulic acid treatments. [Conclusion] The water content of tissue was implied to go up with increasing SR value although the tissue thickness reduced under the above four exogenous phenolic acids. They could diminish the harm of aluminum atress to the leaf anatomical structure and photosynthctic characteristics in some extent. But Cinnamic acid was considered to deepen the harm of aluminum stress through its negative effects or the index values of leaf anatomical structure and photosynthetic characteristics.关键词
外源酚酸/铝处理/解剖结构/光合特征Key words
Exogenous phenolic acids/ Aluminum treatment/ Anatomical structure/ Photosynthetic characteristics分类
农业科技引用本文复制引用
黄晓露,郭东强,杨梅,谭玲..外源酚酸对铝处理下桉树幼苗叶片解剖结构与光合特征的影响[J].安徽农业科学,2012,(19):10196-10199,10339,5.基金项目
国家自然科学基金(31070560) （31070560）
广西自然科学基金(桂科自0991035) （桂科自0991035）
广西研究生教育创新计划资助项目(GXUIIT32554). （GXUIIT32554）
