Title: Changes of membrane fatty acid in 2 species Spiraea L. under low-temperature and de-acclimation conditions
Abstract: In order to understand the relationship between the changes of membrane fatty acid of Spiraea and its cold resistance,the garden trees Spiraea fritschiana Schneid.and Spiraea bumalda 'Goldmound' with different cold resistance were used as materials,applying gas chromatography technology,designing low-temperature and deacclimation treatment,studying the species and the contents changes of their membrane fatty acid under low-temperature treatment.The results showed that the membrane fatty acid in S.fritschiana Schneid.and S.bumalda'Goldmound' were mainly composed of myristic acid(14∶0),palmitic acid(16∶0),oleic acid(18∶1),linoleic acid(18∶2) and linolenic acid(18∶3).They composed more than 90% of total membrane fatty acid,saturated fatty acid was mainly composed by palmitic acid(16∶0),unsaturated fatty acid was mainly composed by linoleic acid(18∶2) and linolenic acid(18∶3).The unsaturated membranes fatty acid contents in S.bumalda 'Goldmound' changed significantly under low temperature treatment,the unsaturated membrane fatty acid contents in S.fritschiana Schneid.changed non-significantly while the same treatment,its stronger cold-resistance might be related to the IUFA level that was more stable under low temperatures.A certain low-temperature level was needed in order to maintain a more stable unsaturation membrane fatty acid level to S.fritschiana Schneid.There was a certain influence to the saturated membrane fatty acid contents in S.fritschiana Schneid.and S.bumalda 'Goldmound' under low temperature treatment.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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