Synchromophyceae

Synchromophyceae is a class of photosynthetic stramenopiles. The chloroplast of the Synchromophyceae are surrounded by two membranes and arranged in a way where they share the outer pair of membranes. The entire chloroplast complex is surrounded by an additional two outer membranes.^[1]

Synchromophyceae
Chlamydomyxa montana
Scientific classification
Domain:	Eukaryota
Clade:	Sar
Clade:	Stramenopiles
Phylum:	Ochrophyta
Clade:	Chrysista
Class:	Synchromophyceae S.Horn & C.Wilhelm 2007[1]
Orders[2]
Synchromales Chlamydomyxales Leucomyxales

Evolution

Synchromophyceae is a class within the Ochrophyta that contains a few genera of amoeboid organisms, such as the mixotrophic Synchromonas and the heterotrophic Chlamydomyxa and Leucomyxa.^[3] It is phylogenetically close to the classes Chrysophyceae and Picophagea, within the SII clade.^[4][2]

Ochrophyta	SIII Diatoms and relatives SI Phaeophytes, xanthophytes, etc. SII Olisthodiscophyceae Pinguiophyceae Chrysophyceae Synchromophyceae Picophagea

Taxonomy

The class Synchromophyceae was described in 2007 to include the genus Synchroma.^[1] Since then, other closely-related organisms have been added. As of 2024, three orders are recognized, each containing one genus, and two additional incertae sedis genera.^[2]

• Order Chlamydomyxales Archer 1875
  • Family Chlamydomyxaceae Engler 1897
    • Chlamydomyxa Archer 1875.
• Order Leucomyxales D.Barcytė & M.Eliáš 2024
  • Family Leucomyxaceae D.Barcytė & M.Eliáš 2024
    • Leucomyxa D.Barcytė & M.Eliáš 2024^[5]
• Order Synchromales R.Schnetter & Ehlers in Horn et al. 2007
  • Family Synchromaceae R.Schnetter & Ehlers in Horn et al. 2007
    • Synchroma R.Schnetter & Ehlers in Horn et al. 2007
• Synchromophyceae incertae sedis (possibly part of Synchromales)^[2]
  • Chrysopodocystis Billard 1978^[6]
  • Guanchochroma R.Schnetter & M.Schmidt 2015^[7]