Phragmites australis Trin. is one of the most commonly used plants in phytoremediation. Although the role of this species in removing nutrients from wastewater is well recognized, very little is known about the physiological mechanisms involved. In order to bridge this gap rhizome cuttings of Phragmites plants were grown for 40 days in sand supplied with a complete nutrient solution containing either NH4+ or NO3- as the nitrogen source. The plants were then transferred to 5-litre beakers for 5 days containing: a complete nutrient solution, a N-deplete, and a S-deplete solution, in each case the N-source, when supplied, being either NO3- or NH4+. The nitrogen source did not affect the sulphate influx rate, which was approximately 50% higher in S-deprived plants.
Effects of nitrogen availability on sulfate uptake in common reed
MALAGOLI, MARIO;
2003
Abstract
Phragmites australis Trin. is one of the most commonly used plants in phytoremediation. Although the role of this species in removing nutrients from wastewater is well recognized, very little is known about the physiological mechanisms involved. In order to bridge this gap rhizome cuttings of Phragmites plants were grown for 40 days in sand supplied with a complete nutrient solution containing either NH4+ or NO3- as the nitrogen source. The plants were then transferred to 5-litre beakers for 5 days containing: a complete nutrient solution, a N-deplete, and a S-deplete solution, in each case the N-source, when supplied, being either NO3- or NH4+. The nitrogen source did not affect the sulphate influx rate, which was approximately 50% higher in S-deprived plants.
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