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Generation of reactive oxygen species in cyanobacteria and green algae induced by allelochemicals of submerged macrophytes
Wang, Jing (1); Zhu, Junying (1); Liu, Shaoping (3); Liu, Biyun (1); Gao, Yunni (1); Wu, Zhenbin (1); Wu, Z.(wuzb@ihb.ac.cn)
2011
Source PublicationChemosphere
ISSN0045-6535
Volume85Issue:6Pages:977-982
AbstractInhibition of phytoplankton by allelochemicals released by submerged macrophytes is reported to be one of the mechanisms that maintain a clear-water state in shallow lakes. In order to elucidate this mechanism, the ability of six polyphenols and two long-chain fatty acids to induce the generation of reactive oxygen species (ROS) in phytoplankton was studied using the ROS sensitive probe 2',7'- dichlorodihydrofluorescein diacetate (DCFH-DA). The results showed that only (+)-catechin (CA) and pyrogallic acid (PA) could induce ROS formation in Microcystis aeruginosa and Pseudokirchneriella subcapitata. 25mgL-1 CA caused 1.2, 1.4 and 1.8 times increase of ROS levels in M. aeruginosa at 1, 2 and 4h exposure, respectively, and, correspondingly in P. subcapitata cells, these values were 3.7, 6.2 and 7.7, respectively. PA also significantly increased the levels of intracellular ROS in P. subcapitata (P<0.01); however, significant ROS generation in M. aeruginosa was observed at only 4h exposure (P<0.01). Light enhanced ROS generation in CA treated cells, but not in the cells treated with PA. CA and PA may act as redox cyclers after uptake by test organisms and produce ROS successively. These results suggest that the oxidative stress induced by the redox cycling property of allelochemicals may be one of the important causes for the inhibitory effect of some submerged macrophytes towards undesired phytoplankton in natural aquatic ecosystems.
Department(1) State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; (2) Graduate School of Chinese Academy of Sciences, Beijing 100039, China; (3) Medical Research Center of Zhongnan Hospital, Wuhan University, Wuhan 430071, China
Indexed ByEI
Language英语
WOS IDWOS:000298223400009
Citation statistics
Cited Times:74[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/16682
Collection水环境工程研究中心_期刊论文
Corresponding AuthorWu, Z.(wuzb@ihb.ac.cn)
Recommended Citation
GB/T 7714
Wang, Jing ,Zhu, Junying ,Liu, Shaoping ,et al. Generation of reactive oxygen species in cyanobacteria and green algae induced by allelochemicals of submerged macrophytes[J]. Chemosphere,2011,85(6):977-982.
APA Wang, Jing .,Zhu, Junying .,Liu, Shaoping .,Liu, Biyun .,Gao, Yunni .,...&Wu, Z..(2011).Generation of reactive oxygen species in cyanobacteria and green algae induced by allelochemicals of submerged macrophytes.Chemosphere,85(6),977-982.
MLA Wang, Jing ,et al."Generation of reactive oxygen species in cyanobacteria and green algae induced by allelochemicals of submerged macrophytes".Chemosphere 85.6(2011):977-982.
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