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You searched for: Subject hydroxylation Remove constraint Subject: hydroxylation Subject Gonyaulax Remove constraint Subject: Gonyaulax Subject liquid chromatography Remove constraint Subject: liquid chromatography Subject term Gonyaulax Remove constraint Subject term: Gonyaulax
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1. Phylogenetic analysis and yessotoxin profiles of Gonyaulax spinifera cultures from the Benguela Current upwelling system

Author:
Chibo Chikwililwa; Pearse McCarron; Joanna J. Waniek; Detlef E. Schulz-Bull
Source:
Harmful algae 2019 v.85 pp. 101626
ISSN:
1568-9883
Subject:
Gonyaulax; algal blooms; coasts; euphotic zone; hydroxylation; liquid chromatography; mass spectrometry; molecular genetics; oceans; phylogeny; phytoplankton; poisonous algae; primary productivity; toxicity; yessotoxin; Italy; Namibia; New Zealand
Abstract:
... The Benguela Current in the Atlantic is one of the four major upwelling systems on the Eastern boundary of the world ocean. Thus the coastal regions off Namibia are prone to high primary productivity that can lead to Harmful Algae Blooms as this nutrient rich water reaches the euphotic zone. Yessotoxins (YTXs) produced by G. spinifera were detected in Namibian phytoplankton field samples in 2011. ...
DOI:
10.1016/j.hal.2019.101626

2. Structure Elucidation and Relative Toxicity of (24R)-24-Hydroxyyessotoxin from a Namibian Isolate of Gonyaulax spinifera

Author:
Isabelle Rajotte; Cheryl Rafuse; Elliott J. Wright; John C. Achenbach; Lee D. Ellis; Pearse McCarron
Source:
Journal of natural products 2019 v.82 no.7 pp. 1945-1952
ISSN:
1520-6025
Subject:
Danio rerio; Gonyaulax; biomass; hydroxylation; liquid chromatography; mass spectrometry; nuclear magnetic resonance spectroscopy; solvents; toxicity; yessotoxin
Abstract:
... Liquid chromatography–high-resolution mass spectrometry (LC-HRMS) analysis of a Namibian strain of Gonyaulax spinifera showed the presence of a number of yessotoxins (YTXs). Principal among these were YTX (1), homoYTX (2), and a tentative hydroxylated analogue that did not correspond to any previously confirmed YTX structures. Culturing the G. spinifera strain afforded sufficient biomass for purif ...
DOI:
10.1021/acs.jnatprod.9b00318