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Recent evidence indicates that during copper (Cu) stress, the roots of metallicolous plants manifest a higher activity of acid invertase enzymes, which are rate-limiting in sucrose catabolism, than non-metallicolous plants. To test whether the higher activity of acid invertases is the result of higher expression of acid invertase genes, we isolated partial cDNAs for acid invertases from two populations...
Two Rumex japonicus populations, one from a copper mine and the other from an uncontaminated site, were studied in hydroponic experiments for the plant growth, copper accumulation and mineral nutrient content under excess copper and nutrient deficiency conditions. The tolerance indices of the contaminated population were significantly higher than that of the uncontaminated population, indicating the...
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