The Minute Alga Schizocladia ischiensis (Schizocladiophyceae, Ochrophyta) Isolated by Germling Emergence from 24 m Depth off Rhodes (Greece)

Anastasia Rizouli, Frithjof C Kuepper, Paraskevi Louizidou, Andrew O.M. Mogg, Elaine Azzopardi, Martin D J Sayer, Hiroshi Kawai, Takeaki Hanyuda, Akira Peters* (Corresponding Author)

*Corresponding author for this work

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Substratum collected during diving surveys of sublittoral communities off the Greek island of Rhodes (Dodecanese, South-East Aegean) in late 2015 was incubated in the laboratory. Among the emerging macroalgal germlings, there was the second-ever record and isolate of the small benthic multicellular alga Schizocladia ischiensis of the poorly known monotypic Schizocladiophyceae, the sister group of the brown algae (Phaeophyceae). Its nuclear ribosomal small subunit, Rubisco spacer (rbcL, psaA, and psbC sequences (in total 5237 bp)) were similar to those of the only previous isolate of the species from Ischia, western Mediterranean. Our new strain formed branched upright thalli attached to the substratum by an amorphous substance secreted at the bottom of the basal cell. It is possible that S. ischiensis is a common member of the infralittoral and circalittoral communities in the Mediterranean and generally overlooked because of its minute size. Germling emergence appears to represent the method of choice to reveal benthic algae of this small size.
Original languageEnglish
Article number102
Number of pages10
Issue number3
Early online date14 Mar 2020
Publication statusPublished - Mar 2020

Bibliographical note

This research was funded by the UK Natural Environment Research Council in support to FCK(program Oceans 2025–WP 4.5 and grants NE/D521522/1 and NE/J023094/1) and the NERC National Facility for Scientific Diving (NFSD/14/02). We would also like to thank the TOTAL Foundation (Project “Brown algal biodiversity and ecology in the Eastern Mediterranean Sea”). This work also received support from AFP from the project IDEALG (France: ANR-10-BTBR-04) and from FCK from the Marine Alliance for Science and Technology for Scotland pooling initiative. MASTS is funded by the Scottish Funding Council (grant reference HR09011) and contributing institutions.


  • macroalgae
  • molecular-assisted identification
  • phytobenthos
  • SP-NOV
  • Molecular-assisted identification
  • Macroalgae
  • Phytobenthos


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