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P Accumulation Potential of Polygonum hydropiper Grown in High P Media
Plant‐assisted approaches are proven to be effective in ameliorating the ecological hazards of excessive phosphorus (P). P accumulation potentials in a mining ecotype (ME) and a non‐mining ecotype (NME) of Polygonum hydropiper were investigated in high P media. A field survey revealed that biomass, P concentration, and accumulation in shoots of ME were significantly greater than that of NME. ME and NME grown in hydroponic media with a series of P supplies ranging from 50 to 800 mg P L−1 showed significant increases in shoot biomass, P concentration, and P accumulation with ascending P supplied level. In manure wastewater media, shoot biomass, and P accumulation of ME increased with the growth period prolonged and revealed significant advantages compared to NME at day 45. Acid phosphatase and phytase of both ecotypes at P‐sufficient media were superior to those at 50 mg P L−1, but NME was higher than ME in the hydroponic media. The activities of acid phosphatase and phytase in ME grown in high concentration wastewater were greater in comparison with that in low concentration wastewater. These results indicate that P. hydropiper can be able to extract P from high P media, and P accumulation potential of ME performs better than that of NME in the media where organic P exists.
P Accumulation Potential of Polygonum hydropiper Grown in High P Media
Plant‐assisted approaches are proven to be effective in ameliorating the ecological hazards of excessive phosphorus (P). P accumulation potentials in a mining ecotype (ME) and a non‐mining ecotype (NME) of Polygonum hydropiper were investigated in high P media. A field survey revealed that biomass, P concentration, and accumulation in shoots of ME were significantly greater than that of NME. ME and NME grown in hydroponic media with a series of P supplies ranging from 50 to 800 mg P L−1 showed significant increases in shoot biomass, P concentration, and P accumulation with ascending P supplied level. In manure wastewater media, shoot biomass, and P accumulation of ME increased with the growth period prolonged and revealed significant advantages compared to NME at day 45. Acid phosphatase and phytase of both ecotypes at P‐sufficient media were superior to those at 50 mg P L−1, but NME was higher than ME in the hydroponic media. The activities of acid phosphatase and phytase in ME grown in high concentration wastewater were greater in comparison with that in low concentration wastewater. These results indicate that P. hydropiper can be able to extract P from high P media, and P accumulation potential of ME performs better than that of NME in the media where organic P exists.
P Accumulation Potential of Polygonum hydropiper Grown in High P Media
Ye, Daihua (author) / Li, Tingxuan (author) / Huang, Xia (author) / Zhang, Xizhou (author) / Zheng, Zicheng (author) / Yu, Haiying (author)
CLEAN – Soil, Air, Water ; 43 ; 279-286
2015-02-01
8 pages
Article (Journal)
Electronic Resource
English
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