Chloropicophyceae

Life-forms

Superregnum: Eukaryota
Regnum: Plantae
Divisio: Chlorophyta
Classis: Chloropicophyceae

Ordo: Chloropicales
Name

Chloropicophyceae Lopes dos Santos & Eikrem, in Lopes dos Santos et al., 2017

Type: Chloropicon Lopes dos Santos & Eikrem

References

Lopes dos Santos, A., Pollina, T., Gourvil, P., Corre, E., Marie, D., Garrido, J.L., Rodríguez, F., Noël, M.-H., Vaulot, D. & Eikrem, W. 2017. Chloropicophyceae, a new class of picophytoplanktonic prasinophytes. Scientific Reports 7(14019): 1–20, 7 figs, 3 tables. DOI: 10.1038/s41598-017-12412-5Open access Reference page. : 16
Guiry, M.D. & Guiry, G.M. 2020. Chloropicophyceae. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. Accessed 2020-02-07.

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

^]

References

This article incorporates "Chloropicophyceae, a new class of picophytoplanktonic prasinophytes" text from this source, which is by Adriana Lopes dos Santos, Thibaut Pollina, Priscilla Gourvil, Erwan Corre, Dominique Marie, José Luis Garrido, Francisco Rodríguez, Mary-Hélène Noël, Daniel Vaulot and Wenche Eikrem available under the CC BY 4.0 license.

Lopes dos Santos, Adriana; et al. (2017). "Chloropicophyceae, a new class of picophytoplanktonic prasinophytes". Sci Rep. 7 (1): 14019. Bibcode:2017NatSR...714019L. doi:10.1038/s41598-017-12412-5. PMC 5656628. PMID 29070840.