| SAG Strain Number: | 698-1a |
| TAXONOMY |
| Genus: | Zygnema |
| Species: | cylindricum cf. |
| Taxonomic position: | Streptophyta - Zygnematophyceae |
| Authority: | Transeau |
| Variety: | |
| Formerly called: | Zygnema circumcarinatum Czurda; Zygnemopsis circumarcinata |
| Authentic: | yes |
| Division: | Streptophyta |
| Class: | Zygnematophyceae |
| ORIGIN |
| General habitat: | freshwater |
| Climatic zone: | |
| Continent: | Europe |
| Country: | Czech Republic |
| Locality: | Bohemia, ditch at meadow Poselteich (Poselský rybnik) near Hirschberg (Doksy) |
| Lat. / Long. (Precision): | 50.552702 / 14.669362 (800m) View on Google Maps |
| Year: | 1929 |
| Isolated by: | V. Czurda |
| Strain number by isolator: | + strain |
| Deposition by: | E. G. Pringsheim |
| Deposition date: | 1954 |
| CULTURE INFORMATION |
| Culture medium: | ESP Ag |
| Axenic: | axenic |
| Strain relatives: | only valid for original strain SAG 698-1a: CCAP 698/1A; UTEX 42; CAUP K 402a; Prague 208; M. Mix 241 |
| Agitation resistance: | not detected |
| Special properties: | strain probably mixed or mislabelled between 1985 and 2006; maybe identical to SAG 698-2 now; sequence data show that this strain belong rather to C. cylindricum than to C. circumcarinatum. Feng et al. 2021; NO known Nagoya Protocol restrictions for this strain; dioecious; + strain |
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| PUBLICATIONS |
| Publication: | Hess S. et al. (2022) A phylogenomically informed five-order system for the closest relatives of land plants. Curr. Biol. 32 (20):4473-4482.e7 |
| Publication: | Feng X. et al. (2021) Characterization of Two Zygnema Strains (Zygnema circumcarinatum SAG 698-1a and SAG 698-1b) and a Rapid Method to Estimate Nuclear Genome Size of Zygnematophycean Green Algae. Frontiers in Plant Science 12:610381 |
| Publication: | de Vries J et al. (2018) Embryophyte stress signaling evolved in the algal progenitors of land plants. PNAS 115 (15):E3471-E3480 |
| Publication: | Fulnečková J. et al. (2013) A Broad Phylogenetic Survey Unveils the Diversity and Evolution of Telomeres in Eukaryotes. Genome Biology and Evolution 5 (3):468-483 |
| Publication: | Gerotto, C. et al. (2013) Evolution of photoprotection mechanisms upon land colonization: evidence of PSBS-dependent NPQ in late Streptophyte algae. Physiologia Plantarum 149:583–598 |
| Publication: | Turmel M. et al. (2005) The complete chloroplast DNA sequences of the charophycean green algae Staurastrum and Zygnema reveal that the chloroplast genome underwent extensive changes during the evolution of the ZygnematalesVis, M. L. & Sheath, R. G. 1996. Distribution and. BMC Biol. 3 (22) |
| Publication: | Czurda, V. (1930) Experimentelle Untersuchungen über die Sexualitätsverhältnisse der Zygnemalen. Beih. Botan. Centralbl. 47:15-68 |
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| SEQUENCE INFORMATION |
| Sequencing Project: | PRJNA17049 Zygnema circumcarinatum chloroplast, complete genome |
| Sequence Accession: | KM020155 Zygnema circumcarinatum strain SAG 698-1a 18S ribosomal RNA gene, partial sequence. (2199 bp) |
| Sequence Accession: | NC_008117 Zygnema circumcarinatum chloroplast, complete genome. (165372 bp) |
| Sequence Accession: | AY958086 Zygnema circumcarinatum chloroplast, complete genome. (165372 bp) |
| CRYO |
| Cryopreservation: | no survival, standard 2-step protocol 5% DMSO |
| TEACHING |
| Recommended for teaching: | no |
