ARC Photosynthesis Research Group, Department of Pure and Applied Biology, Imperial College, London SW7 2BB England.
Plant Physiol. 1983 May;72(1):225-8. doi: 10.1104/pp.72.1.225.
The lipid composition and level of unsaturation of fatty acids has been determined for chloroplast thylakoid membranes isolated from Pisum sativum grown under cold (4 degrees /7 degrees C) or warm (14 degrees /17 degrees C) conditions. Both the relative amounts of lipid classes and degree of saturation were not greatly changed for the two growth conditions. In cold-grown plants, there was a slightly higher linolenic and lower linoleic acid content for the glycolipids monogalactosyldiacylglycerol (MGDG), digalactosyldiacylglycerol (DGDG), and sulfoquinovosyldiacylglycerol. In contrast to thylakoid membranes, a non-thylakoid leaf membrane fraction including the chloroplast envelope, had a higher overall level of fatty acid unsaturation in cold-grown plants due mainly to an increase in the linolenic acid content of MGDG, DGDG, phosphatidylglycerol, and phosphatidylcholine. The most clear cut change in the thylakoid membrane composition was the lipid to protein ratio which was higher in the cold-grown plants.
已测定了在低温（4°C/7°C）或高温（14°C/17°C）条件下生长的豌豆质体类囊体膜的脂质组成和脂肪酸不饱和度水平。对于这两种生长条件，脂质种类的相对含量和饱和度都没有很大变化。在低温生长的植物中，糖脂单半乳糖二酰基甘油（MGDG）、二半乳糖二酰基甘油（DGDG）和硫酸奎诺二酰基甘油的亚麻酸含量略高，亚油酸含量略低。与类囊体膜相反，包括叶绿体被膜的非类囊体叶膜部分在低温生长的植物中具有更高的脂肪酸不饱和度总水平，这主要是由于 MGDG、DGDG、磷脂酰甘油和磷脂酰胆碱中亚麻酸含量的增加。类囊体膜组成中最明显的变化是在低温生长的植物中，脂质与蛋白质的比例更高。
