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The upregulation of thiamine (vitamin B1) biosynthesis in Arabidopsis thaliana seedlings under salt and osmotic stress conditions is mediated by abscisic acid at the early stages of this stress response

机译:盐和渗透胁迫条件下拟南芥幼苗中硫胺素(维生素B1)的生物合成上调是由脱落酸介导的。

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摘要

BackgroundRecent reports suggest that vitamin B1 (thiamine) participates in the processes underlying plant adaptations to certain types of abiotic and biotic stress, mainly oxidative stress. Most of the genes coding for enzymes involved in thiamine biosynthesis in Arabidopsis thaliana have been identified. In our present study, we examined the expression of thiamine biosynthetic genes, of genes encoding thiamine diphosphate-dependent enzymes and the levels of thiamine compounds during the early (sensing) and late (adaptation) responses of Arabidopsis seedlings to oxidative, salinity and osmotic stress. The possible roles of plant hormones in the regulation of the thiamine contribution to stress responses were also explored.
机译:背景技术最近的报道表明,维生素B1(硫胺素)参与了植物适应某些类型的非生物和生物胁迫(主要是氧化胁迫)的过程。已经鉴定了编码拟南芥中硫胺素生物合成中所涉及的酶的大多数基因。在本研究中,我们检查了拟南芥幼苗对氧化,盐分和渗透胁迫的早期(敏感)和晚期(适应)响应过程中硫胺素生物合成基因的表达,编码硫胺素二磷酸依赖酶的基因以及硫胺素化合物的水平。 。还探讨了植物激素在硫胺素对应激反应的调节中的可能作用。

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