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麻风树叶水浸提液对大豆根细胞的化感效应

Keywords: 麻风树,叶水浸提液,根边缘细胞,根尖分生区细胞,遗传毒性,生态风险

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Abstract:

全球入侵物种编目已将生物柴油树种麻风树列入高入侵风险植物.为了评估麻风树种植业的生态风险,以大豆为受体,采用悬空气法研究了麻风树叶水浸提液对根边缘细胞数目、抗氧化酶活性和有丝分裂的化感效应.结果表明,随着麻风树叶水浸提液质量浓度升高,大豆根边缘细胞数目先增加后降低,根冠果胶甲基酯酶活性升高;幼根丙二醛含量和抗氧化酶活性与未处理对照的差异不显著;麻风树叶水浸提液还诱导了大豆根尖细胞微核率升高,呈现出较强的时间和质量浓度依赖双重效应的遗传毒性.研究结果表明,麻风树对根细胞具有遗传毒性和细胞毒性,具有一定的生态风险.

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