Biology:Chloropicophyceae

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Short description: Class of green algae

Chloropicophyceae
Chloropicon sieburthii 2017 Lope dos Santos et al.png
Chloropicon sieburthii, type species
Scientific classification
Kingdom:
Plantae
Division:
Class:
Chloropicophyceae

Lopes dos Santos & Eikrem 2017
Order:
Chloropicales

Lopes dos Santos & Eikrem 2017
Family:
Chloropicaceae

Lopes dos Santos & Eikrem 2017
Genera

Chloropicophyceae is a class of green algae in the division Chlorophyta that, along with Picocystophyceae, coincides with the traditional "prasinophyte clade VII".[1]

Description

Members of this class are coccoid green cells, with a diameter of 1.5–4 µm, found in marine waters, with one nucleus, one mitochondrion, and one chloroplast surrounded by two membranes, containing starch grain; their single chloroplast has chlorophylls a and b; they lack pyrenoid and flagella; and they have a layered cell wall. Their sexual reproduction is unknown.[1]

Taxonomy

In total, this class contains eight newly described species, belonging to two genera. The taxonomy goes as follows[1] :

  • Division Chlorophyta Reichenbach 1834
    • Class Chloropicophyceae Lopes dos Santos & Eikrem 2017
      • Order Chloropicales Lopes dos Santos & Eikrem 2017
        • Family Chloropicaceae Lopes dos Santos & Eikrem 2017
          • Genus Chloropicon Lopes dos Santos & Eikrem 2017
            • Chloropicon sieburthii Lopes dos Santos & Eikrem 2017 (type species)
            • Chloropicon primus Lopes dos Santos & Eikrem 2017
            • Chloropicon roscoffensis Lopes dos Santos & Eikrem 2017
            • Chloropicon mariensis Lopes dos Santos & Eikrem 2017
            • Chloropicon laureae Lopes dos Santos & Eikrem 2017
            • Chloropicon maureeniae Lopes dos Santos & Eikrem 2017
          • Genus Chloroparvula Lopes dos Santos & Eikrem 2017
            • Chloroparvula pacifica Lopes dos Santos & Eikrem 2017 (type species)
            • Chloroparvula japonica Lopes dos Santos & Eikrem 2017

Phylogeny

In the 2017 article where the new class is described, it is shown as the sister clade of the class Picocystophyceae. The internal relationships are shown in the tree below, which is a simplified version of the phylogenetic tree elaborated in the research:[1]

Chlorokybus atmophyticus (outgroup)

      

core Chlorophytes

 clade VII 
Picocystophyceae

Picocystis salinarum

Chloropicophyceae

Chloroparvula pacifica

Chloroparvula japonica

Chloropicon maureeniae

Chloropicon mariensis

Chloropicon laureae

Chloropicon primus

Chloropicon sieburthii

Chloropicon roscoffensis

References

Wikidata ☰ Q65151860 entry