State of the lipid and fatty acid composition in chloroplasts of Nicotianatabacum 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 Bro adleaf, cultivated under an increased Pco(2) of 700 p.p.m. Glycolipids and phospholipids remain constant under these conditions, whereas the carotenoi d content undergoes a quantitative change. The saturation degree of fatty a cids increases due to an increase in palmitic acid and decreases in hexadec atrienoic acid and linolenic acid.