天然氨基酸(NAA)很少被研究作为螯合剂,尽管它们能够螯合重金属(HM)。在目前的研究中,提取的天然氨基酸的影响,作为天然和环保的螯合剂,并接种荧光假单胞菌(PF)和云南微球菌(MY)细菌对藜麦在铅污染土壤中的某些反应进行了研究,Ni,Cd,和Zn。接种PGPR细菌可提高植物生长和植物修复效率。藜麦根中Pb和Cd含量较高,而枝条中的Ni和Zn含量较高。用NAA处理和同时接种PF和MY细菌对Ni观察到最高的效率,Cd,Pb,和Zn。植物修复效率和Ni吸收效率的最高值,Cd,Pb,锌分别为21.28、19.11、14.96和18.99μgg-1,以及31.52、60.78、51.89和25.33μgg-1。本研究的结果很好地证明了从血粉中提取的NAA由于其大小的多样性而起到了强螯合剂的作用。增溶能力,丰富的官能团,和与Ni形成稳定络合物的电势,Cd,Pb,Zn,增加土壤中金属的有效性,提高藜麦的植物修复效率。
这项研究集中在一个未充分研究的主题上,天然氨基酸(NAA)和促进植物生长的根瘤菌(PGPRs)的潜力,以提高多金属污染土壤中藜麦的植物修复效率废物回收方法。尽管它们有螯合能力,在这种情况下,很少对NAA进行研究。在本研究中,提取的NAA的影响,作为环保螯合剂,并研究了荧光假单胞菌(PF)和云南微球菌(MY)细菌的接种对藜麦在铅污染土壤中的反应,Ni,Cd,和Zn。
Natural amino acids (NAA) have been rarely investigated as chelators, despite their ability to chelate heavy metals (HMs). In the present research, the effects of extracted natural amino acids, as a natural and environmentally friendly chelate agent and the inoculation of Pseudomonas fluorescens (PF) and Micrococcus yunnanensis (MY) bacteria were investigated on some responses of quinoa in a soil polluted with Pb, Ni, Cd, and Zn. Inoculation of PGPR bacteria enhanced plant growth and phytoremediation efficiency. Pb and Cd were higher in quinoa roots, while Ni and Zn were higher in the shoots. The highest efficiencies were observed with NAA treatment and simultaneous inoculation of PF and MY bacteria for Ni, Cd, Pb, and Zn. The highest values of phytoremediation efficiency and uptake efficiency of Ni, Cd, Pb, and Zn were 21.28, 19.11, 14.96 and 18.99 μg g-1, and 31.52, 60.78, 51.89, and 25.33 μg g-1, respectively. Results of present study well demonstrated NAA extracted from blood powder acted as strong chelate agent due to their diversity in size, solubilizing ability, abundant functional groups, and potential in the formation of stable complexes with Ni, Cd, Pb, and Zn, increasing metal availability in soil and improving phytoremediation efficiency in quinoa.
This study focused on an underexplored topic, the potential of natural amino acids (NAA) and plant growth-promoting rhizobacteria (PGPRs) to enhance phytoremediation efficiency of quinoa in a multi-metal contaminated soil with the waste recycling approach. Despite their chelating abilities, NAA have been rarely studied in this context. In the present study, the effects of extracted NAA, acting as environmentally friendly chelating agents, and the inoculation of Pseudomonas fluorescens (PF) and Micrococcus yunnanensis (MY) bacteria were examined on the responses of quinoa in a soil contaminated with Pb, Ni, Cd, and Zn.