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首页> 外文期刊>Russian Journal of Plant Physiology >Assessment of the respiratory costs of adaptation in plant species thatdiffer in their responses to insufficient and excessive mineral nutrition
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Assessment of the respiratory costs of adaptation in plant species thatdiffer in their responses to insufficient and excessive mineral nutrition

机译：评估对矿物质营养不足和过度反应不同的植物物种的适应呼吸成本

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摘要

The effects of insufficient and excessive mineral nutrition on the relative growth rate (RGR); the rate of total dark respiration (SigmaR); gross photosynthesis (Pg); and the contents of endogenous IAA, ABA, and cytokinins (CK) were studied in 20-60-day-old seedlings of plant species that differed in their responses to these factors: beet root (Amaranthus retroflexus L.), orchard-grass (Dactylis glomerata L.), and common wheat (Triticum aestivum L.). The changes in the level of mineral nutrition lowered the RGR and Pg values and the IAA/ABA and CK/ABA ratios and increased the SigmaR and SigmaR/Pg values and ABA content, especially in A. retroflexus and T. aestivum. The authors propose a new way to assess the respiratory cost of adaptation to stress based on the relation between the RGR and the SigmaR/Pg values. The adaptation component of SigmaR is shown to relate to the ABA content.
机译：矿物质营养不足和过多对相对生长率（RGR）的影响;全黑呼吸率（SigmaR）;总光合作用（Pg）;并在20-60天大的植物种子幼苗中研究了内源IAA，ABA和细胞分裂素（CK）的含量，这些幼苗对这些因素的反应不同：甜菜根（Amaranthus retroflexus L.），果园草（ Dactylis glomerata L.）和普通小麦（Triticum aestivum L.）。矿物质营养水平的变化降低了RGR和Pg值以及IAA / ABA和CK / ABA比，并增加了SigmaR和SigmaR / Pg值以及ABA含量，尤其是在逆行曲霉和普通小麦中。作者提出了一种基于RGR与SigmaR / Pg值之间关系的评估呼吸适应压力的新方法。 SigmaR的适应成分显示与ABA含量有关。

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