Polar Lipid Composition in Antarctic Grass Leaves

1990s data from Robert Island, Antarctica, details the polar lipid and fatty acid composition in leaves and roots of the grass Deschampsia antarctica. The dataset was collected by the organization SCIOPS and last updated in February 1992. It includes measurements of unsaturation ratios in specific lipid fractions, such as phosphatidylinositol.

Use Cases

• Analyze the unsaturation ratio of fatty acids in the phosphatidylinositol fraction to assess membrane fluidity adaptations.
• Compare polar lipid contents in leaves versus roots to understand organ-specific stress responses.
• Correlate measured lipid profiles with environmental temperature data to model photosynthetic performance thresholds.

Strengths

• Data originates from a specific, documented field location in Robert Island, Antarctica.
• Includes a quantified finding, such as an unsaturation ratio of 3.3 for a specific lipid fraction.

Limitations

• Dataset is temporally stale, with the last update recorded in 1992.
• Sample size and specific row/column counts are unknown, limiting statistical power assessment.
• Geographic scope is limited to a single island, which may not represent broader Antarctic conditions.

Provenance

Source

nasa_earthdata

Collection Method

Plants were collected in the field, frozen in liquid nitrogen, and analyzed for lipid and fatty acid composition.

Time Range

1990s (specific collection date unknown, last updated 1992)

Geography

Robert Island, maritime Antarctica