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首页> 外文期刊>Journal of Biophysical Chemistry >Correlations between delayed fluorescence of chlorophyll, metabolism and yield of plants. II. Influence of moisture of leaf and temperature condition on delayed fluorescence of leaves
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Correlations between delayed fluorescence of chlorophyll, metabolism and yield of plants. II. Influence of moisture of leaf and temperature condition on delayed fluorescence of leaves

机译：叶绿素荧光延迟，植物代谢与产量之间的关系。二。叶片水分和温度条件对叶片延迟荧光的影响

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摘要

During various temperatures of incubation the dehydration of leaves up to 3.2-3.8% mainly in-duced increase maximum amplitude of delayed fluorescence of chlorophyll. It was shown that moisture loss with this range could be deter-mined for the most part by the growth of the electrochemical potential of thylakoid mem-branes. The further incubation of detached leaves at 36℃ temperature, with more notable moisture loss, resulted in specific its decline as opposed to cases of 22 and 6℃ of thermal in-cubation. It was confirmed that the increased temperatures and moisture loss damage of the cells of plants occurred together induce a greater influence on plants than in case of oc-curring apart. The results allow to suppose that this can be mostly caused weakly associated polypeptides fallen out from the chloroplast membrane, which may be stipulated by high temperature combined with change ionic and osmotic stresses due moisture loss. Simulta-neously, the results showed that the exposure of the critical lowered air temperature led to considerable typical changes of leaves delayed fluorescence parameters of field plants. There-fore, their use can constitute new approaches to elucidate the molecular basis of plant freezing tolerance in a timely manner, based on concen-tration-related changes and the efficiency of coupling between light and dark processes of plants.
机译：在不同的温育温度下，叶片脱水最多可达3.2-3.8％，主要是导致叶绿素延迟荧光的最大幅度增加。结果表明，在这个范围内的水分损失大部分可以通过类囊体膜的电化学势的增长来确定。与温度分别为22和6℃的温育相比，在36℃的温度下进一步培养离体的叶片，水分流失更为明显，导致其特异性下降。可以确认，与分开发生的情况相比，一起升高的温度和水分对植物细胞的损失造成了更大的影响。结果允许推测这可能主要是由于弱结合的多肽从叶绿体膜上脱落所致，这可能是由于高温以及由于水分流失而引起的离子和渗透压变化引起的。同时，结果表明，临界降低的空气温度的暴露导致叶片显着的典型变化，延迟了田间植物的荧光参数。因此，它们的使用可以构成新的方法，以与浓度有关的变化以及植物的明暗过程之间的耦合效率为基础，及时阐明植物抗冻性的分子基础。

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