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首页> 外文期刊>Pakistan journal of botany >Effects of nitrogen deficiency on physiology and growth of Fraxinus mandshurica
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Effects of nitrogen deficiency on physiology and growth of Fraxinus mandshurica

机译：氮缺乏对Fraxinus mandshurica生理和生长的影响

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摘要

This study was to investigate expression changes in biochemical molecules and physiology of Fraxinus mandshurica seedlings under nitrogen deficiency stress. The biochemical and physiological parameters together with gene expression levels undernitrogen deficiency stress were investigated. Differences in nitrogen metabolism key enzymes, ROS-scavenging genes, circadian rhythm genes, and endogenous hormones between nitrogen deficiency treatment and adequate nitrogen treatment were compared. Resistance to stress of the two groups was determined. The results showed that under the nitrogen deficiency condition, biomass and relative growth rate markedly decreased, and Fraxinus mandshurica had greater biochemical and physiological changes in nitrogen metabolism key enzymes and endogenous hormones. Additionally, expression of genes involved in biological clock and scavenging of reactive oxygen species (ROS) in nitrogen deficiency treatment were greatly changed while compared with that of total nitrogen treatment. In order to resist stress and maintain basic life activities, Fraxinus mandshurica increased its metabolic control, regulated oxidative stress and antioxidant systems, delayed aging, and inhibited their growth viachanging expression of circadian rhythm genes, reactive oxygen species scavenging genes, nitrogen metabolism, and endogenous hormones.
机译：该研究是在氮气缺乏胁迫下调查Fraxinus Mandshurica幼苗生物化学分子和生理学的表达变化。研究了生物化学和生理学参数以及基因表达水平缺乏缺乏胁迫。比较了氮代谢关键酶，ROS - 清除基因，昼夜节律基因和氮气缺乏治疗与充分氮处理之间的内源激素的差异。确定了对两组的应力的抵抗力。结果表明，在缺乏缺乏症条件下，生物质和相对生长速率明显降低，并且Fraxinus Mandshurica在氮代谢关键酶和内源激素中具有更大的生物化学和生理变化。另外，与总氮处理相比，在氮气缺乏治疗中表达涉及生物钟和可活性氧物质（ROS）的扫描的基因的表达在大大变化，同时与总氮处理相比。为了抵抗应力并维持基础寿命，Fraxinus Mandshurica增加其代谢控制，调节氧化应激和抗氧化系统，延迟老化，并通过Circadian节律基因的表达，活性氧物种清除基因，氮代谢和内源性抑制其生长。激素。

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