(Table 1) Characteristics of Klebsormidium (filamentous green algae) strains from the Antarctic, Arctic and Slovakia ...

• Main Authors: Elster, Josef, Degma, Peter, Kovácik, Lubomir, Valentová, Lucia, Sramková, Katarina, Pereira, Antonio Batista
• Format: Dataset
• Language: English
• Published: PANGAEA 2008
• Subjects: Latitude of event; Longitude of event; Event label; Name; Genus; Year of publication; Area/locality; Substrate type; Width; Length; Characteristic; Biological sample; International Polar Year 2007-2008 IPY; Antarctic; Arctic; Ellesmere Island; King George Island; Svalbard; The Antarctic; Antarc*; International Polar Year; IPY
• Online Access: https://dx.doi.org/10.1594/pangaea.809498; https://doi.pangaea.de/10.1594/PANGAEA.809498

The freezing and desiccation tolerance of 12 Klebsormidium strains, isolated from various habitats (aero-terrestrial, terrestrial, and hydro-terrestrial) from distinct geographical regions (Antarctic - South Shetlands, King George Island, Arctic - Ellesmere Island, Svalbard, Central Europe - Slovakia) were studied. Each strain was exposed to several freezing (-4°C, -40°C, -196°C) and desiccation (+4°C and +20°C) regimes, simulating both natural and semi-natural freeze-thaw and desiccation cycles. The level of resistance (or the survival capacity) was evaluated by chlorophyll a content, viability, and chlorophyll fluorescence evaluations. No statistical differences (Kruskal-Wallis tests) between strains originating from different regions were observed. All strains tested were highly resistant to both freezing and desiccation injuries. Freezing down to -196°C was the most harmful regime for all studied strains. Freezing at -4°C did not influence the survival of studied strains. Further, freezing down to -40°C ... : Growth habits: 1st type = submerged tufts; 2nd type = submerged tufts and surface layer. Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 ...