Identification of euglenophycin – A toxin found in certain euglenoids

Zimba, Paul V.; Moeller, P.; Beauchesne, Kevin R.; Lane, Hannah E.; Triemer, Richard E.

doi:10.1016/j.toxicon.2009.07.004

Cited by 63 publications

(76 citation statements)

References 13 publications

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“…Euglena assemblages are known to be widely distributed in higher eutrophic shallow ponds at elevated temperature (Wild et al, 1995). Most problems occur when population of potentially toxic species increase dramatically and causes oxygen depletions killing fish, shellfish and other aquatic organisms (Lopez et al, 2008;Zimba et al, 2004;2010;Boyd and Tucker, 2014). In Nepal, farmers generally believe that red bloom has adverse effects on fish farming such as low fish production, oxygen depletion and fish mortality; however, no scientific research is done yet to prove it.…”

Section: Introductionmentioning

confidence: 99%

Water quality and red bloom algae of fish ponds in three different regions of Nepal

et al. 2017

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Present study determines the causes and seasonal variation of red bloom in fishponds of Eastern, Western and Central regions of Nepal. Monthly monitoring of water quality and phytoplankton was carried out for one year. Water parameters such as NH 3 -N, total phosphorus, total Kjeldahl nitrogen (TKN), total dissolved solids (TDS) and conductivity were significantly higher (p<0.05) in red bloom fishponds than non-red bloom fishponds. The total density of euglenophytes in red-bloom fishponds was significantly higher (P<0.05) (1970±260 cells L

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Section: Introductionmentioning

confidence: 99%

Water quality and red bloom algae of fish ponds in three different regions of Nepal

et al. 2017

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“…This shows the ability to respond to the extremely high and competitive interactions that exists in the microbial communities. In particular, it seems that the secondary metabolites of green microalgae show great potential in the search for compounds with plaguicidal application, because they are not common producers of hepatic or neurotoxins like cyanobacteria, examples are Euglena (Zimba et al 2010;Das et al 2005) or Haematococcus (Rodríguez-Meizoso et al 2010). Furthermore, some cyanobacteria have proven to be important producers of non peptide compounds, whose toxicity is not comparable to the hepato or neurotoxins as bioactive fatty acids from species of Oscillatoria (Kiviranta and Abdel-Hameed 1994;Tellez et al 2001).…”

Section: Discussionmentioning

confidence: 99%

“…Recently, the euglenophycin (14) alkaloid from Euglena sanguinea showed algaecidal activity against M. aeruginosa and Planktothrix sp. at concentrations \300 ppb, additionally 14 showed ichthyotoxic and anticancer activities (Zimba et al 2010) (Fig. 1).…”

Section: Scytonema Hofmannimentioning

confidence: 96%

Metabolites from freshwater aquatic microalgae and fungi as potential natural pesticides

Hernández-Carlos

Gamboa‐Angulo

2010

Phytochem Rev

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Microorganisms are recognized worldwide as the major source of secondary metabolites with mega diverse structures and promissory biological activities. However, as yet many of them remain little or under-explored like the microbiota from freshwater aquatic ecosystems. In the present review, we undertook a recompilation of metabolites reported with pesticidal properties from microalgae (cyanobacteria and green algae) and fungi, specifically from freshwater aquatic habitats.

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“…1.3 (Zimba et al 2004). Ichthyotoxins produced by this species cause important economic losses in commercial agriculture ponds in the United States (Zimba et al 2004(Zimba et al , 2010. Members of this group do not form a monophyletic clade on the phylogenetic tree ( Fig.…”

Section: Euglena Ehrenberg 1830 Emended By Marin and Melkonian 2003mentioning

confidence: 99%

Evolutionary Origin of Euglena

Zakryś

Milanowski

Karnkowska

2017

Advances in Experimental Medicine and Biology

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Euglenids (Excavata, Discoba, Euglenozoa, Euglenida) is a group of free-living, single-celled flagellates living in the aquatic environments. The uniting and unique morphological feature of euglenids is the presence of a cell covering called the pellicle. The morphology and organization of the pellicle correlate well with the mode of nutrition and cell movement. Euglenids exhibit diverse modes of nutrition, including phagotrophy and photosynthesis. Photosynthetic species (Euglenophyceae) constitute a single subclade within euglenids. Their plastids embedded by three membranes arose as the result of a secondary endosymbiosis between phagotrophic eukaryovorous euglenid and the Pyramimonas-related green alga. Within photosynthetic euglenids three evolutionary lineages can be distinguished. The most basal lineage is formed by one mixotrophic species, Rapaza viridis. Other photosynthetic euglenids are split into two groups: predominantly marine Eutreptiales and freshwater Euglenales. Euglenales are divided into two families: Phacaceae, comprising three monophyletic genera (Discoplastis, Lepocinclis, Phacus) and Euglenaceae with seven monophyletic genera (Euglenaformis, Euglenaria, Colacium, Cryptoglena, Strombomonas, Trachelomonas, Monomorphina) and polyphyletic genus Euglena. For 150 years researchers have been studying Euglena based solely on morphological features what resulted in hundreds of descriptions of new taxa and many artificial intra-generic classification systems. In spite of the progress towards defining Euglena, it still remains polyphyletic and morphologically almost undistinguishable from members of the recently described genus Euglenaria; members of both genera have cells undergoing metaboly (dynamic changes in cell shape), large chloroplasts with pyrenoids and monomorphic paramylon grains. Model organisms Euglena gracilis Klebs, the species of choice for addressing fundamental questions in eukaryotic biochemistry, cell and molecular biology, is a representative of the genus Euglena.

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Identification of euglenophycin – A toxin found in certain euglenoids

Cited by 63 publications

References 13 publications

Water quality and red bloom algae of fish ponds in three different regions of Nepal

Water quality and red bloom algae of fish ponds in three different regions of Nepal

Metabolites from freshwater aquatic microalgae and fungi as potential natural pesticides

Evolutionary Origin of Euglena

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