State of the lipid and fatty acid composition in chloroplasts of Nicotiana tabacum under the influence of an increased CO₂ partial pressure of 700 p.p.m.

We analysed chloroplast lipids of Nicotiana tabacum var. John William's Broadleaf, cultivated under an increased Pco₂ of 700 p.p.m. Glycolipids and phospholipids remain constant under these conditions, whereas the carotenoid content undergoes a quantitative change. The saturation degree of fatty acids increases due to an increase in palmitic acid and decreases in hexadecatrienoic acid and linolenic acid.