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对缺磷、铝毒、盐、干旱、Fe、Mn、Cu、Zn胁迫下大豆根系和叶片磷酸烯醇式丙酮酸磷酸酯酶(PEPP)活性进行了测定,结果表明:(1)长期缺磷和铝毒胁迫可显著提高大豆根系的PEPP活性,并表现出加成效应;(2)长期铝毒、缺磷和铝毒耦合胁迫也显著提高大豆敏感品种BL2叶片的PEPP活性;(3)盐胁迫、干旱以及长期Fe、Mn、Cu、Zn过量都显著提高大豆根系的PEPP活性,Fe、Cu、Zn缺乏则对根系和叶片的PEPP活性影响不大,长期缺Mn显著降低大豆根系及叶片的PEPP活性。
The activities of phosphoenolpyruvate phosphatase (PEPP) in roots and leaves of soybean under phosphorus, aluminum toxicity, salt, drought, Fe, Mn, Cu and Zn stress were measured. The results showed that: (1) And aluminum stress could significantly increase the PEPP activity of soybean roots and showed additive effect; (2) Long-term aluminum toxicity, phosphorus deficiency and aluminum toxicity also significantly increased the PEPP activity of soybean susceptible BL2 leaves; (3) Stress, drought and long-term excess of Fe, Mn, Cu and Zn all significantly enhanced the PEPP activity of soybean roots. Fe, Cu and Zn deficiencies had little effect on the PEPP activity of roots and leaves. PEPP activity.