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Mar Pollut Bull

Title:		Allelopathic effects and potential allelochemical of Sargassum fusiforme on red tide microalgae Heterosigma akashiwo
Author(s):		Sun S; Hu S; Zhang B; Sun X; Xu N;
Address:		"School of Economics and Management, Zhejiang Ocean University, Zhoushan 316022, China; Key Laboratory of Marine Biotechnology of Zhejiang Province, School of Marine Sciences, Ningbo University, Ningbo 315211, China. Key Laboratory of Marine Biotechnology of Zhejiang Province, School of Marine Sciences, Ningbo University, Ningbo 315211, China. Key Laboratory of Marine Biotechnology of Zhejiang Province, School of Marine Sciences, Ningbo University, Ningbo 315211, China. Electronic address: xunianjun@nbu.edu.cn"
Journal Title:		Mar Pollut Bull
Year:		2021
Volume:		20210702
Issue:
Page Number:		112673 -
DOI:		10.1016/j.marpolbul.2021.112673
ISSN/ISBN:		1879-3363 (Electronic) 0025-326X (Linking)
Abstract:		"In this study, we aim to explore the allelochemicals of marine brown algae Sargassum fusiforme and the mechanism of allelopathy effect on Heterosigma akashiwo. Six potential allelopathic substances, palmitic acid, arachidonic acid, alpha-linolenic acid (ALA), fucosterol, 24-hydroperoxy-24-vinylcholesterol, and saringosterowere, were isolated and identified from S. fusiforme by column chromatography, NMR, TOF-MS and GC-MS analyses. The ALA and 24-hydroperoxy-24-vinylcholesterol showed remarkable inhibitory activities on H. akashiwo growth. Besides, the allelopathic mechanism between the ALA and H. akashiwo was preliminarily investigated. The results indicated that the activities of SOD and POD of H. akashiwo gradually decreased under high ALA concentration. The reduction of photosynthetic pigments and chlorophyll fluorescence parameters, as well as apparent electron transport rate in H. akashiwo cells, aggravated gradually with increasing the concentration of the ALA. In summary, this study revealed the responses of morphology and physiology of H. akashiwo when exposed by ALA, while revealing the potential of macroalgae in red tide control"
Keywords:		Allelopathy Harmful Algal Bloom *Microalgae Pheromones *Sargassum Algicidal mechanism Allelopathic effect Heterosigma akashiwo Isolation and purification Linolenic acid Sargassum fusiforme;
Notes:		"MedlineSun, Siqi Hu, Shanshan Zhang, Bo Sun, Xue Xu, Nianjun eng England 2021/07/06 Mar Pollut Bull. 2021 Sep; 170:112673. doi: 10.1016/j.marpolbul.2021.112673. Epub 2021 Jul 2"