首页 | 本学科首页   官方微博 | 高级检索  
     


Effect of temperature of imbibition on phospholipid metabolism in pea embryonic axes
Authors:Liliana Di Nola  Alfred M. Mayer
Affiliation:Department of Botany, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
Abstract:Pea seeds were imbibed in radioactive choline and then germinated. Treatments were either at 5° or 25° and the seeds were imbibed for 5 hr at one temperature and then transferred to the other. [Me-14C]Choline incorporation into phosphatidyl choline in the ER and the plasma membrane obtained from the embryonic axes after germination was measured. Seeds kept constantly at 25° had a very rapid initial incorporation of choline followed by a loss of label. Seeds kept at 5° had a very much lower rate of incorporation. However, seeds transferred from 5 to 25° behaved for at least 48 hr as if continuously kept at 5°, while in seeds transferred from 25 to 5° incorporation stopped after 15 hr. The seeds apparently respond to transient exposure to temperature by a changed metabolism of phospholipid. Data are also given for the choline content of the seeds under the different treatments and for the changes in total phospholipid.
Keywords:Leguminoseae  seeds  germination  phospholipids  phosphatidyl choline  temperature  endoplasmic reticulum  plasma membrane  choline incorporation.
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号