Phosphorus- and Iron-Deficiency Stresses Affect Arsenic Accumulation and Root Exudates in Pteris vittata
Phosphorus- and Iron-Deficiency Stresses Affect Arsenic Accumulation and Root Exudates in Pteris vittata
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DOI：
10.18178/ijesd.2019.10.12.1211
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发表时间：
2019
影响因子：
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通讯作者：
Chongyang Yang;Mei-fang Chien;Ying-Ning Ho;C. Inoue
中科院分区：
文献类型：
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作者：
Chongyang Yang;Mei-fang Chien;Ying-Ning Ho;C. Inoue
磷(P)和铁（Fe）是砷在植物和砷污染土壤之间运输的重要元素。就砷修复而言，更好地了解磷和铁在调节砷生物利用度和植物生长中的作用将有助于优化植物修复过程。在本研究中，我们发现在缺磷条件下，维塔翼蒿的As吸收和从根到茎的转运都增强了。在高砷浓度处理下，营养不足的维塔草吸收更多的砷。此外，它还能说服植物在充足的营养条件下分泌草酸。缺铁和缺铁刺激植物分泌更多草酸。
Phosphorus (P) and iron (Fe) are important elements for arsenic (As) transportation between plant and As contaminated soil. In the case of As phytoremediation, a better understanding of the roles to the P and Fe in regulating As bioavailability and plant growth will be beneficial to optimize the phytoremediation process. In this study, we demonstrated that both As absorption and translocation from root to shoot of Pteris vittata were enhanced under phosphorus deficiency. In high arsenic concentration treatments, P. vittata assimilated more As under nutrient deficiency. Moreover, As persuaded plants to secrete oxalic acid in sufficient nutrients. Pand Fe-deficiency stimulate more oxalic acid exuded by plants.