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首页> 外文期刊>Plant and Soil >Chlorsulfuron reduces rates of zinc uptake by wheat seedlings from solution culture.
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Chlorsulfuron reduces rates of zinc uptake by wheat seedlings from solution culture.

机译：氯磺隆减少了溶液培养的小麦幼苗对锌的吸收速率。

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摘要

Wheat cv. Excalibur (Zn efficient) and wheat cv. Gatcher and durum wheat cv. Durati (Zn inefficient) were grown in HEDTA chelate-buffered nutrient solution in controlled conditions and supplied with 0 or 40 鎔 chlorsulfuron litre-1. Zn uptake ratesof 12-day-old plants were measured over 80 or 90 min using different concentrations of 65Zn added to nutrient solutions. Increasing the Zn concentration of the solution increased the rate of Zn uptake, while the percentage of Zn transported to shoots wasdecreased. Addition of chlorsulfuron to uptake solutions for 90 min did not influence rate of Zn uptake or transport of Zn to shoots. Pretreating plants with chlorsulfuron for 5 days decreased Zn uptake rates, but transport to shoots was proportionallyincreased. Three-day pretreatment with chlorsulfuron was the minimum required for significant differences in uptake and transport of Zn to occur. Plants exposed to chlorsulfuron for 3 days required a further 5 days of growth in chlorsulfuron-free solutions before uptake rates recovered to control plant rates. It is concluded that chlorsulfuron deleteriously but reversibly affects uptake of Zn across the plasma membrane after prolonged exposure.
机译：小麦简历神剑（锌高效）和小麦简历。麦田和硬粒小麦简历。将杜拉迪（低效锌）在受控条件下于HEDTA螯合物缓冲的营养液中生长，并提供0或40镕氯磺隆升1。使用添加到营养液中的不同浓度的65Zn，在80或90分钟内测量了12天龄植物的锌吸收率。增加溶液中锌的浓度可以增加锌的吸收速率，同时减少锌向茎中的转运百分比。在吸收溶液中添加氯磺隆90分钟不会影响锌的吸收速率或锌向枝条的转运。用氯磺隆预处理植物5天可降低锌的吸收速率，但向枝条的转运成比例增加。氯磺隆预处理三天是发生锌吸收和转运差异显着的最低要求。暴露于氯磺隆中3天的植物需要在不含氯磺隆的溶液中再生长5天，然后才能恢复吸收速率以控制植物的生长速率。结论是，长时间暴露后，氯磺隆有害但可逆地影响整个质膜上锌的吸收。

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