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首页> 外文期刊>Journal of plant nutrition and soil science >Effect of K+ nutrition, leaf age and light intensity on apoplastic K+ inleaves of Vicia faba
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Effect of K+ nutrition, leaf age and light intensity on apoplastic K+ inleaves of Vicia faba

机译：k +营养，叶龄和光强度对维西娅Faba的Applastic k + inleaves的影响

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摘要

The infiltration-centrifugation method is valuable for the estimation of ion concentrations within the leaf apoplast because it opens up the possibility of differentiating between free and bound cations. The K+ concentration in the apoplast of intact leaves of Vicia Saba reflects the nutritional status with respect of this ion and can be monitored by the infiltration-centrifugation technique. Transfer into a nutrient solution without K+ led to a significant decrease in apoplastic K+ within two days. Under K+ deficiency, the K+ concentration in the leaf apoplast was maintained at 2 mM. Regardless of K+ supply, young leaves had higher K+ concentrations in the apoplast than older ones. Data on diurnal variations in apoplastic K+ suggest that the leaf apoplast is a transient pool for K+ accumulation within the leaf prior to absorption into the symplast or retranslocation to other growing tissues.
机译：渗透离心方法对于叶片间体内的离子浓度估计是有价值的，因为它开辟了在自由和结合阳离子之间区分的可能性。 vicia saba的完整叶子的胰腺炎中的K +浓度反映了该离子的营养状态，并且可以通过渗透离心技术监测。 在没有K +的情况下转移到营养溶液中，导致妊娠k +在两天内显着降低。 在K +缺乏症下，叶子间相色的K +浓度保持在2mm。 无论k +供应，幼叶是否具有比老年人的k +浓度高于老年人。 关于Applastic K +的昼夜变化的数据表明，在吸收叶片中的叶片或重新扩展到其他生长组织之前，叶子术k +的叶片胰蛋白酶是K +积累的瞬态池。

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