Assessing UV-B induced DNA damage in Antarctic plants: is desiccation a compounding factor?

Deschampsia antarctica. Azorella selago, Acaena magellanica) were collected on 5 days over the season. These were analysed for DNA damage, UVB absorbing pigments, and photosynthetic and photoprotective pigments.

Chlorophyll fluorescence and leaf temperature were measured on the sampled plants. Nutrient gradient GPS co-ordinates: high nutrient site: 53 06 0.419S, 73 43 0.105E 4g of P. antiscorbutica and 0.8g of P. cookii were taken at the high nutrient site, along with chlorophyll fluorescence measurements. GPS co-ordinates: low nutrient site: 53 06 29.09S, 73 43 00.36E 7.2g of P. antiscorbutica and 3.2g of P. cookii were taken at the low nutrient site, along with chlorophyll fluorescence measurements.

Scarlett Hill GPS co-ordinates: 53 05 0.645S, 073 40 0.339E 3.2 g of P. antiscorbutica plants was sampled and chlorophyll fluorescence measurements taken. Spit Camp GPS co-ordinates: 3.2g of P. antiscorbutica plants was sampled and chlorophyll fluorescence measurements taken. Ceratodon Paddick Valley GPS co-ordinates: 53 08 43.44S, 73 40 35.42E 3 g of Ceratodon purpureus was collected.

The fields in this dataset are: Species Date Weight grams dry weight (gdw) Water Content Aspect Community type Time (Local Time) Fluorescence Leaf temperature (1, 2, etc) F - Chlorophyll Fluorescence Fm' - Fluorescence maximum measured in the light Yield - Yield of fluorescence No. and Mark are stamps put on the data during download