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Adv Sci (Weinh)

Title:		Natural Algaecide Sphingosines Identified in Hybrid Straw Decomposition Driven by White-Rot Fungi
Author(s):		Hu J; Kokoette E; Xu C; Huang S; Tang T; Zhang Y; Liu M; Huang Y; Yu S; Zhu J; Holmer M; Xiao X;
Address:		"Ocean College, Zhejiang University, #1 Zheda Road, Zhoushan, Zhejiang, 316021, China. Key Laboratory of Marine Ecological Monitoring and Restoration Technologies of Ministry of Natural Resources, Shanghai, 201206, China. Key Laboratory of Watershed Non-point Source Pollution Control and Water Eco-security of Ministry of Water Resources, College of Environmental and Resources Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China. Department of Biology, University of Southern Denmark, Odense, 5230, Denmark"
Journal Title:		Adv Sci (Weinh)
Year:		2023
Volume:		20230703
Issue:		25
Page Number:		e2300569 -
DOI:		10.1002/advs.202300569
ISSN/ISBN:		2198-3844 (Electronic) 2198-3844 (Linking)
Abstract:		"Harmful algal blooms (HABs), which are promoted by eutrophication and intensified by global warming, occur worldwide. Allelochemicals, which are natural chemicals derived from plants or microbes, are emerging weapons to eliminate these blooms. However, the cost and technical challenges have limited the discovery of novel antialgal allelochemicals. Herein, the decomposition of agricultural straws is manipulated by white-rot fungi and achieved elevated antialgal efficiency. The transcriptomic analysis reveals that nutrient limitation activated fungal decomposition. By using a comparative nontarget metabolomics approach, a new type of allelochemical sphingosines (including sphinganine, phytosphingosine, sphingosine, and N-acetylsphingosine) is identified. These novel natural algaecides exhibit superior antialgal capability, with as high as an order of magnitude lower effective concentration on blooming species than other prevalent allelochemicals. The co-expression relationship between transcriptomic and metabolomic results indicate that sphinganine is strongly correlated with the differentially expressed lignocellulose degradation unigenes. The algal growth suppression is triggered by the activation of programmed cell death, malfunction of algal photosystem and antioxidant system, the disruption on CO(2) assimilation and light absorption. The sphingosines reported here are a new category of allelochemicals in addition to the well-known antialgal natural chemicals, which are potential species-specific agents for HABs control identified by multi-omics methodology"
Keywords:		*Sphingosine *Herbicides Pheromones Fungi allelochemicals harmful algal blooms metabolome sphingosines transcriptome;
Notes:		"MedlineHu, Jing Kokoette, Effiong Xu, Caicai Huang, Shitao Tang, Tao Zhang, Yiyi Liu, Muyuan Huang, Yuzhou Yu, Shumiao Zhu, Jie Holmer, Marianne Xiao, Xi eng LR22D06003/Zhejiang Provincial Natural Science Foundation/Funds for Distinguished Young Scientists/ MEMRT202102/open founding from the Key Laboratory of Marine Ecological Monitoring and Restoration Technologies of the Ministry of Natural Resources of China/ 226-2022-00119/Fundamental Research Funds for the Central Universities/ ZJU Tang scholar funding/ 21876148/National Natural Science Foundation of China/ 21677122/National Natural Science Foundation of China/ 202106320181/China Scholarship Council/ Research Support, Non-U.S. Gov't Germany 2023/07/04 Adv Sci (Weinh). 2023 Sep; 10(25):e2300569. doi: 10.1002/advs.202300569. Epub 2023 Jul 3"