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- W3136228915 abstract "Nitrogen (N) application is efficient to enhance phosphorus (P)-phytoextraction efficiency of P-accumulating plants. However, there is little available information on growth, P uptake and physiological changes of P-accumulating plants in high P media with different N application, and that whether the improved growth or P uptake is related with changes of phytohormones and phenols. This study investigated growth, P-accumulating capability, phytohormones and phenols of a mining ecotype (ME) and a non-mining ecotype (NME) of Polygonum hydropiper in high P media (400 mg L −1 ) with sufficient N (SN, 50 mg L −1 ) and low N (LN, 12.5 mg L −1 ) supply. SN supply greatly increased tissue biomass, P-accumulating capability of P. hydropiper in high P media, and the ME showed higher P bioaccumulation coefficient, and tissue P accumulation than the NME. The greatest tissue biomass and P accumulation was found at 5 weeks. At 5 weeks, SN supply greatly decreased concentrations of indole-3-acetic acid (IAA), zeatin, abscisic acid (ABA), total phenolic and flavonoid in tissues of P. hydropiper , compared with LN supply. The ME produced lower concentrations of IAA, zeatin, ABA, total phenolic and flavonoid than the NME in leaf and stem in high P media with N supply. Significantly negative correlations were found between IAA, zeatin, ABA, flavonoid concentrations and biomass as well as P accumulation in leaf. Thus, SN supply promoted high P tolerance and P-accumulating capability of the ME in relation to modulating phytohormones and phenols to suitable concentrations, ultimately improving P-phytoextraction ability. • Sufficient N enhanced plant tolerance to high P, especially the ME of P. hydropiper. • Sufficient N increased P-accumulating capability of P. hydropiper in high P media. • The ME showed higher leaf and stem P accumulation than the NME with SN supply. • The ME down-regulated the levels of shoot phytohormones and phenols by SN supply. • The reduced shoot phytohormones and phenols enhanced P-accumulating of the ME." @default.
- W3136228915 created "2021-03-29" @default.
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- W3136228915 date "2021-09-01" @default.
- W3136228915 modified "2023-10-05" @default.
- W3136228915 title "Sufficient nitrogen promoted high phosphorus tolerance and phosphorus-accumulating capability of Polygonum hydropiper in relation to changes of phytohormones and phenols" @default.
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- W3136228915 doi "https://doi.org/10.1016/j.chemosphere.2021.130318" @default.
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