INTERACTIONS INVOLVING COPPER TOXICITY AND PHOSPHORUS DEFICIENCY IN BUSH BEAN PLANTS GROWN IN SOLUTIONS OF LOW AND HIGH pH
INTERACTIONS INVOLVING COPPER TOXICITY AND PHOSPHORUS DEFICIENCY IN BUSH BEAN PLANTS GROWN IN SOLUTIONS OF LOW AND HIGH pH
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DOI：
10.1097/00010694-198906000-00010
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发表时间：
1989-06
期刊：
影响因子：
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通讯作者：
A. Wallace;J. W. Cha
中科院分区：
文献类型：
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作者：
A. Wallace;J. W. Cha
布什豆植物在营养液中生长，并进行处理以产生 CaCO3（铜缺乏）、铜过量和磷缺乏的胁迫。当中度缺磷和高铜毒性同时施加时，当溶液pH值约为4时，导致生长不良的相互作用具有协同作用。当溶液pH值约为8时，相互作用的协同作用较小。高pH值显着抑制了Cu的吸收。结果进一步证明，石灰可以减少多种痕量金属有毒浓度的相互作用的协同效应。低磷导致低 pH 值下根部铜含量增加。磷缺乏比足量磷更容易导致高铜引起的铁缺乏。
Bush bean plants were grown in nutrient solution with treatments to result in stresses of CaCO3 (Cu deficiency), excess Cu, and P deficiency. When moderate P deficiency and high Cu toxicity were both simultaneously imposed, the interaction resulting in poor growth was synergistic when the solution pH was about 4. When the solution pH was about 8, the interaction was less synergistic. The high pH considerably suppressed the uptake of the Cu. The results are further evidence that liming can decrease much of the interactive synergistic effects of toxic concentrations of multiple trace metals. Low P resulted in increased Cu in roots at the low pH. The P deficiency was more conductive to Fe deficiency induced by high Cu than was adequate P.