土壤铅超标不仅影响植物体的正常生长，而且通过食物链危害人类健康。
Soil lead exceeding the allowed standard not only affects the plant's normal growth, but also harms the human health through the food chain.
相应地将构建的表达质粒导入变铅青链霉菌TK24中获得五株基因工程菌株。
These plasmids were introduced into S. lividans TK24, respectively and five genetic engineering strains were constructed.
铅不但会影响作物的品质和产量，而且还可以通过食物链富集等方式危害人类的健康。
Lead will not only affect the quantities and quality of the products cultivated in the farmland, but also harm the human health mostly by the means of the enriched food chains.
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