红树植物秋茄叶片水提物的抑藻效应

生态学杂志 ›› 2012, Vol. 31 ›› Issue (09): 2241-2246.

红树植物秋茄叶片水提物的抑藻效应

孙志伟¹,田斐¹,安民²,段舜山^1**

(¹暨南大学水生生物研究中心，广东省高校水体富营养化与赤潮防治重点实验室，广州 510632； ²Environmental and Analytical Laboratories, Faculty of Science, Charles Sturt University, Wagga Wagga, NSW 2678, Australia)

出版日期:2012-09-10 发布日期:2012-09-10

Inhibitory effects of aqueous extracts from mangrove plant Kandelia candel leaves on microalgae.

SUN Zhi-wei¹, TIAN Fei¹, AN Min², DUAN Shun-shan^1**

(¹Research Centre of Hydrobiology, Key Laboratory of Aquatic Eutrophication and Control of Harmful Algal Blooms of Guangdong Higher Education Institutes, Jinan University, Guangzhou 510632, China; ²Environmental and Analytical Laboratories, Faculty of Science, Charles Sturt University, Wagga Wagga, NSW 2678, Australia)

Online:2012-09-10 Published:2012-09-10

摘要/Abstract

摘要： 通过藻细胞密度的测定，探讨了不同浓度(0.5、1.0和2.0 g·L^-1)红树植物秋茄(Kandelia candel)新鲜叶片水提物对球形棕囊藻(Phaeocystis globosa)和赤潮异弯藻(Heterosigma akashiwo)的化感抑制效应，研究了高温处理对秋茄提取物化感作用的影响。结果表明：秋茄叶片提取物对两种赤潮藻均具有显著的化感抑制作用，不同浓度提取物化感作用强度不同；5 d内，浓度为2.0 g·L^-1秋茄叶片提取物对球形棕囊藻和赤潮异弯藻的最大抑制率分别为91.6%和77.0%；球形棕囊藻和赤潮异弯藻对红树植物秋茄提取物的敏感性不同，提取物对球形棕囊藻的抑制效果要优于赤潮异弯藻；经高温处理后，秋茄提取物抑藻效果显著降低（P<0.05）；秋茄叶片水提物影响藻细胞膜结构，使藻细胞体积增大、细胞破裂。

关键词: 大兴安岭, 火烧迹地, 恢复, 碳储量

Abstract: Through the measurement of algal cell density, this paper evaluated the allelopathic inhibitory effects of different concentration (0.5, 1.0, and 2.0 g·L^-1) aqueous extracts from the fresh leaves of mangrove plant Kandelia candel on Phaeocystis globosa and Heterosigma akashiwo. The impacts of heat treatment on the allelopathic effects of the extracts were also examined. The leaf extracts of K. candel had significant inhibitory effects on the two microalgae, and the effects were concentration-dependent. In five days, the maximum inhibitory rates of the extracts at 2.0 g·L^-1 on P. globosa and H. akashiwo were 91.6% and 77.0%, respectively. P. globosa and H. akashiwo had different sensitivity to the extracts. The inhibitory effect of the extracts was stronger on P. globosa than on H. akashiwo. Heat treatment decreased the inhibitory effects of the extracts significantly (P<0.05). The extracts damaged the cell membrane of the microalgae, making their cells expanded and broken.

Key words: Greater Xing’an Mountains, burned area, restoration, carbon storage.

孙志伟1,田斐1,安民2,段舜山1**. 红树植物秋茄叶片水提物的抑藻效应[J]. 生态学杂志, 2012, 31(09): 2241-2246.

SUN Zhi-wei1, TIAN Fei1, AN Min2, DUAN Shun-shan1**. Inhibitory effects of aqueous extracts from mangrove plant Kandelia candel leaves on microalgae.[J]. cje, 2012, 31(09): 2241-2246.

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