Comparative Studies on the Allelopathic Effects of Ulva pertusa Kjellml, Corllina pilulifera Postl et Ruprl, and Sargassum thunbergii mertl O. Kuntze on Skeletonema costatum (Grev.)Cleve |
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作者姓名: | Ren-Jun Wang Hui Xiao Pei-Yu Zhang Liang Qu Heng-Jiang Cai Xue-Xi Tang |
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作者单位: | [1]Marine Ecology Laboratory, Ocean University of China, Qingdao 266003, China [2]Department of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China |
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摘 要: | In the present study, we evaluated the allelopathic effects of three macroalgae, namely Ulva pertusa Kjellml, Corallina pilufifera Postl et Ruprl, and Sargassum thunbergii Mertl O. Kuntze, on the growth of the microalga Skeletonema costaturn (Grev.) Creve using culture systems in which the algae coexisted. The effects of the macroalgal culture medium filtrate on S. costatum were also investigated. Moreover, isolated co-culture systems were built to confirm the existence of allelochemicals and preclude growth inhibition by direct contact. The coexistence assay data demonstrated that the growth of S. costaturn was strongly inhibited when fresh tissues, dry powder and aqueous extracts were used; the allelochemicals were lethal to S. costatum at relatively higher concentrations. The effects of the macroalgal culture medium filtrate on the microalga showed both species specificity and complexity. The inhibitory effect of fresh macroalgal tissue and culture medium filtrate on the microalga was due to the alleochemicals released by the macroalgae. The results of the present study show that the allelopathic effects of macroalgae on the microalga are complex. The present study could shed light onto the basis of the interaction between macro- and microalgae.
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关 键 词: | 洋大戟草 骨条藻 植物 研究 |
收稿时间: | 2005-12-22 |
修稿时间: | 2005-12-222006-03-21 |
Comparative Studies on the Allelopathic Effects of Ulva pertusa Kjellml, Corallina pilulifera Postl et Ruprl, and Sargassum thunbergii Mertl O. Kuntze on Skeletonema costatum (Grev.) Cleve |
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Authors: | Ren-Jun Wang Hui Xiao Pei-Yu Zhang Liang Qu Heng-Jiang Cai Xue-Xi Tang |
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Institution: | Marine Ecology Laboratory, Ocean University of China, Qingdao 266003, China;;Department of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China |
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Abstract: | In the present study, we evaluated the allelopathic effects of three macroalgae, namely Ulva pertusa Kjellml, Corallina pilulifera Postl et Ruprl, and Sargassum thunbergii Mertl O. Kuntze, on the growth of the microalga Skeletonema costatum (Grev.) Creve using culture systems in which the algae coexisted. The effects of the macroalgal culture medium filtrate on S. costatum were also investigated. Moreover, isolated co‐culture systems were built to confirm the existence of allelochemicals and preclude growth inhibition by direct contact. The coexistence assay data demonstrated that the growth of S. costatum was strongly inhibited when fresh tissues, dry powder and aqueous extracts were used; the allelochemicals were lethal to S. costatum at relatively higher concentrations. The effects of the macroalgal culture medium filtrate on the microalga showed both species specificity and complexity. The inhibitory effect of fresh macroalgal tissue and culture medium filtrate on the microalga was due to the alleochemicals released by the macroalgae. The results of the present study show that the allelopathic effects of macroalgae on the microalga are complex. The present study could shed light onto the basis of the interaction between macro‐and microalgae. (Managing editor: Ping He) |
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Keywords: | allelopathic effects Corallina pilulifera Skeletonema costatum Sargassum thunbergii Ulva pertusa |
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