Light and stage of development influence the expression of desiccation-induced genes in the resurrection plant Craterostigma plantagineum
Light and stage of development influence the expression of desiccation-induced genes in the resurrection plant Craterostigma plantagineum
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DOI：
10.1111/j.1365-3040.1996.tb00252.x
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发表时间：
1996-03-01
影响因子：
7.3
通讯作者：
Bartels, D
中科院分区：
文献类型：
--
作者：
Alamillo, JM;Bartels, D
Craterostigma plantagineum是复活植物的代表，能够耐受完全干燥，在脱水过程中，诱导出许多特征性的转录物和蛋白质;这些基因产物中的大多数也可以由阿坝触发表达，选择了五个代表性的脱水相关cDNA克隆，在脱水和阿坝处理期间，分析了光和发育阶段对转录物和相应蛋白质表达的影响。在光存在下的脱水和阿坝处理诱导了几种转录物的显著增加，而光对定位于叶绿体中的某些蛋白质的水平（相对于mRNA水平）具有相反的影响。尽管非常年轻的植物在脱水后具有恢复全部生理活性的能力，但一些与脱水相关的基因产物仍以低水平表达。
Craterostigma plantagineum is a representative of the resurrection plants, which are able to withstand complete dryness, During the dehydration process, many characteristic transcripts and proteins are induced; these have been isolated by molecular cloning, The expression of most of these gene products can also be triggered by ABA, Five representative desiccation-related cDNA clones were selected, The effect of light and developmental stage on the expression of the transcripts and corresponding proteins was analysed during dehydration and ABA treatment, Desiccation and ABA treatment in the presence of light induced a marked increase in several of the transcripts, whereas light had the reverse effect on the levels of some proteins (relative to mRNA levels) localized in the chloroplast. Although very young plants have the capacity to resume full physiological activity after dehydration, some of the desiccation-related gene products are still expressed at low levels.