Constitutive Components and Induced Gene Expression are Involved in the Desiccation Tolerance of Selaginella tamariscina
作者： M.-S. Liu , C.-T. Chien , T.-P. Lin
DOI: 10.1093/PCP/PCN040
关键词: Biochemistry 、 Gene expression 、 Trehalose 、 Saturated fatty acid 、 Selaginella tamariscina 、 Desiccation 、 Selaginella 、 Desiccation tolerance 、 Dehydration 、 Biology
摘要: Selaginella tamariscina, one of the most primitive vascular plants, can remain alive in a desiccated state and resurrect when water becomes available. To evaluate nature desiccation tolerance this plant, we compared composition soluble sugars saturation ratios phospholipids (PLs) between hydrated tissues S. tamariscina using gas chromatography. In study, differences gene expression ABA contents were also analyzed during dehydration. The results revealed that trehalose (at >130 mg g(-1) DW) was major sugar, low saturated fatty acid content PLs (0.31) maintained both tissues. addition, increased 3-fold, genes involved signaling cellular protection up-regulated while photosystem-related down-regulated biochemical molecular findings suggest constitutive inducible protective molecules contribute to tamariscina.
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