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Reduction of geomagnetic field (GMF) to near null magnetic field (NNMF) affects some Arabidopsis thaliana clock genes amplitude in a light independent manner

机译:将地磁场(GMF)降低到近零磁场(NNMF)以轻的独立方式影响一些拟南芥颗时钟基因幅度

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摘要

Plant endogenous clock consists of self-sustained interlocked transcriptional/translational feedback loops whose oscillation regulates many circadian processes, including gene expression. Its free running rhythm can be entrained by external cues, which can influence all clock parameters. Among external cues, the geomagnetic field (GMF) has been demonstrated to influence plant growth and development We evaluated the quantitative expression (qRT-PCR) of three clock genes (LHY, Gl and PRR7) in time-course experiments under either continuous darkness (CD) or long days (LD) conditions in Arabidopsis thaliana seedlings exposed to GMF (similar to 40 mu T) and Near Null Magnetic Field (NNMF; similar to 40 nT) conditions. Under both LD and CD conditions, reduction of GMF to NNMF prompted a significant increase of the gene expression of LHY and PRR7, whereas an opposite trend was found for GI gene expression. Exposure of Arabidopsis to NNMF altered clock gene amplitude, regardless the presence of light, by reinforcing the morning loop. Our data are consistent with the existence of a plant magnetoreceptor that affects the Arabidopsis endogenous clock.
机译:植物内源时钟包括自持互锁的转录/翻译反馈回路,其振荡调节许多昼夜昼夜过程,包括基因表达。它的自由运行节奏可以由外部提示夹带,可以影响所有时钟参数。在外部提示中,已经证明了地质磁场(GMF)影响了植物生长和发展,我们在连续黑暗中的时间过程实验中评估了三个时钟基因(LHY,GL和PRR7)的定量表达(QRT-PCR)( CD)或长期(LD)拟南芥的病症暴露于GMF(类似于40μg)和近零磁场(NNMF;类似于40nt)条件。在LD和CD条件下,GMF的降低至NNMF促使LHY和PRR7的基因表达的显着增加,而发现了对GI基因表达的相反趋势。拟南芥暴露于NNMF改变的时钟基因幅度,无论光的存在,通过加强晨环。我们的数据与影响拟南芥内源时钟的植物磁体的存在一致。

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