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Nat Prod Res

Title:		Allelopathic activity of some Sri Lankan seaweed extracts and the isolation of a new brominated nonaromatic isolaurene type sesquiterpene from red alga Laurencia heteroclada harvey
Author(s):		Haniffa HM; Ranjith H; Dharmaratne W; Yasin Mohammad M; Choudhary MI;
Address:		"Natural Products Programme, Institute of Fundamental Studies, Kandy, Sri Lanka. Faculty of Applied Sciences, South Eastern University of Sri Lanka, Oluvil, Sri Lanka. H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan. Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia"
Journal Title:		Nat Prod Res
Year:		2021
Volume:		20190820
Issue:		12
Page Number:		2020 - 2027
DOI:		10.1080/14786419.2019.1655023
ISSN/ISBN:		1478-6427 (Electronic) 1478-6419 (Linking)
Abstract:		"This study investigated the allelopathic activity of sixteen seaweed extracts using lettuce seed germination bioassay. The results of the preliminary investigation suggested that the methanol extracts of seven seaweeds demonstrated significant properties inhibitory to seed germination. In addition, chemical investigation of an active extract of the alleopathic Laurencia heteroclada Harvey led to the isolation of four known compounds as well as a new brominated nonaromatic isolaurene type sesquiterpene. The structural elucidation of pure compounds was carried out using spectroscopic methods and by comparison with literature. As seaweeds are highly abundant around Sri Lanka, they could be developed as an ecofriendly natural herbicide in their crude form"
Keywords:		Allelopathy Germination/drug effects Halogenation Herbicides/chemistry/*pharmacology Laurencia/chemistry Lettuce/drug effects Magnetic Resonance Spectroscopy Molecular Structure Pheromones/chemistry/pharmacology Plant Extracts/chemistry/*pharmacology Seaw;
Notes:		"MedlineHaniffa, Haroon M Ranjith, H Dharmaratne, W Yasin Mohammad, Mohammad Choudhary, M Iqbal eng England 2019/08/21 Nat Prod Res. 2021 Jun; 35(12):2020-2027. doi: 10.1080/14786419.2019.1655023. Epub 2019 Aug 20"