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Related Concept Videos

Other Algae01:19

Other Algae

The group Stramenopiles include some phototrophic microorganisms. Members of this group possess flagella covered in numerous short, hairlike extensions, a feature that inspired the group's name, derived from the Latin words for "straw" and "hair." Some of the main categories of Stramenopiles include diatoms, golden algae, and brown algae.Diatoms are unicellular, photosynthetic eukaryotes, with over 200 known genera. They play a key role in the planktonic communities of both marine and...
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Green algae, also referred to as chlorophytes, are different from red algae in having the chloroplasts containing chlorophylls a and b, which give them their distinct green hue. However, they lack phycobiliproteins, preventing them from developing the red or blue-green pigmentation seen in red algae. In terms of photosynthetic pigment composition, green algae closely resemble plants and share a close evolutionary relationship with them. Taxonomically Green algae belong to Phylum Chlorophyta in...
Red Algae01:23

Red Algae

Red algae, also known as rhodophytes, are primarily found in marine environments, though some species inhabit freshwater and terrestrial ecosystems. These organisms exist in both unicellular and multicellular forms, with some multicellular varieties reaching macroscopic sizes.As phototrophic organisms, red algae contain chlorophyll a; however, their chloroplasts lack chlorophyll b. Instead, they possess phycobiliproteins, which serve as major light-harvesting pigments, similar to those found in...
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Overview of Algae

The kingdom Archaeplastida encompasses red and green algae, along with land plants. Unlike other protists with chloroplasts that arose through secondary endosymbiosis, only red and green algae originated from primary endosymbiotic events. This diverse group of eukaryotic organisms contains chlorophyll and performs oxygenic photosynthesis.Algae exist in various forms, from large brown kelp in coastal waters to green scum in puddles and stains on rocks or soil. Some species are responsible for...
Diversity of Protists III01:27

Diversity of Protists III

Rhizaria are a diverse group of unicellular protists characterized by their threadlike cytoplasmic extensions known as pseudopodia. These structures aid in both locomotion and feeding, giving Rhizaria an amoeboid appearance. Their amoeboid morphology once led to taxonomic confusion, but molecular phylogenetics has clarified their evolutionary placement and emphasized their shared use of pseudopodia despite divergent lineages.This clade comprises diverse lineages such as Chlorarachniophyta,...
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Updated: Jul 3, 2026

A Standardized Procedure for Monitoring Harmful Algal Blooms in Chile by Metabarcoding Analysis
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Published on: August 26, 2021

Sterols and fatty acids of three harmful algae previously assigned as Chattonella.

José-Luis Giner1, Hui Zhao, Carmelo Tomas

  • 1Department of Chemistry, SUNY-ESF, 1 Forestry Drive, Syracuse, NY 13210, USA. jlginer@syr.edu

Phytochemistry
|July 16, 2008
PubMed
Summary
This summary is machine-generated.

Harmful algal species reclassified into new genera, Chloromorum and Verrucophora, show distinct sterol and fatty acid profiles. Occelasterol, a unique sterol, was identified in Verrucophora strains.

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Published on: January 7, 2019

Area of Science:

  • Marine Biology
  • Phycology
  • Biochemistry

Background:

  • Harmful algal blooms (HABs) pose significant ecological and economic threats.
  • Accurate taxonomic classification is crucial for understanding HABs and their impacts.
  • Previous classifications of certain Raphidophyceae species, including those in the genus Chattonella, require revision.

Purpose of the Study:

  • To determine the sterol and fatty acid compositions of three harmful algal species.
  • To reclassify species previously assigned to the genus Chattonella into new genera: Chloromorum and Verrucophora.
  • To investigate the unique sterol occelasterol found in Verrucophora.

Main Methods:

  • Lipidomic analysis, including sterol and fatty acid profiling.
  • Gas chromatography-mass spectrometry (GC-MS) for compound identification.
  • Comparative analysis with known sterol and fatty acid data from related algal species.

Main Results:

  • Chloromorum toxicum (formerly Chattonella cf. verruculosa) exhibited major fatty acids 14:0, 16:0, 18:1n-9, 18:4n-3, and 20:5n-3.
  • Verrucophora strains (formerly Chattonella aff. verruculosa and Chattonella verruculosa) showed major fatty acids 14:0, 16:0, 18:0, 18:4n-3, 18:5n-3, and 22:6n-3.
  • C. toxicum contained poriferasterol and clionasterol, while both Verrucophora strains uniquely contained occelasterol.

Conclusions:

  • The distinct lipid profiles support the reclassification of these species into new genera, Chloromorum and Verrucophora.
  • The identification of occelasterol in Verrucophora represents a novel finding in algal lipid biochemistry.
  • Understanding these biochemical differences is vital for HABs research and management.