Lipid profiling and tolerance to low-temperature stress in Thellungiella salsuginea in comparison with Arabidopsis thaliana
Lipid profiling and tolerance to low-temperature stress in Thellungiella salsuginea in comparison with Arabidopsis thaliana
复制标题
与拟南芥相比，Thellungiella salsuginea 的脂质谱和对低温胁迫的耐受性
DOI：
10.1007/s10535-012-0137-8
复制
发表时间：
2013-03-01
影响因子：
1.5
通讯作者：
Li, W. Q.
中科院分区：
文献类型：
--
作者：
Zhang, X. D.;Wang, R. P.;Li, W. Q.
膜脂组成的变化是植物抵抗低温胁迫的基本策略。我们比较了salsuginethellungiella salsuginethellungiella及其近亲拟南芥（Arabidopsis thaliana）在正常生长温度、冷驯化（CA）、冷冻（FR）和冷冻后恢复（PFR）过程中的11个膜甘油类成员。结果表明，salsuginet与拟南稻不同，主要表现为：1)磷脂酸（PA）相对含量低，在FR和PFR过程中PA分别快速升高和降低；2)溶磷脂对冷冻不敏感；3)磷脂酰胆碱与磷脂酰乙醇胺的比例高。所有这些特性都有利于维持膜的完整性和稳定性，因此使得salsuginet比拟南芥更具抗冻性。
Changes in membrane lipid composition is a fundamental strategy for plants to resist low-temperature stress. We compared members of 11 membrane glycerolipid classes in Thellungiella salsuginea and its close relative Arabidopsis thaliana at normal growth temperature, and during cold acclimation (CA), freezing (FR), and post-freezing recovery (PFR). The results showed several properties of T. salsuginea distinct from that in A. thaliana, which included: 1) low relative content of phosphatidic acid (PA) and a rapid increase and decrease of PA during FR and PFR respectively; 2) insensitivity of lyso-phospholipids to freezing; and 3) high ratio of phosphatidylcholine to phosphatidylethanolamine. All these properties were in favour of maintaining membrane integrity and stability and therefore enable T. salsuginea to be more tolerant to freezing than A. thaliana.