Hokkaido Research Center, Forestry and Forest Products Research Institute (FFPRI), Forest Research and Management Organization, 7 Hitsujigaoka, Sapporo, Hokkaido, 062-8516, Japan; Research Faculty of Agriculture, School of Agriculture, Hokkaido University, Kita 9 Nishi 9, Sapporo, Hokkaido, 060-8589, Japan.
Hokkaido Research Center, Forestry and Forest Products Research Institute (FFPRI), Forest Research and Management Organization, 7 Hitsujigaoka, Sapporo, Hokkaido, 062-8516, Japan.
Environ Pollut. 2018 Jul;238:1044-1047. doi: 10.1016/j.envpol.2018.02.068. Epub 2018 Mar 14.
Lanthanum is a rare earth element (REE) which has been extensively studied due to its wide application in numerous fields with a potential accumulation in the environment. It has long been known for its potential to stimulate plant growth within a hormetic-biphasic dose response framework. This article provides evidence from a series of high resolution studies published within the last two decades demonstrating a substantial and significant occurrence of lanthanum-induced hormesis in plants. These findings suggest that hormetic responses should be built into the study design of hazard assessment study protocols and included in the risk assessment process. Hormesis also offers the opportunity to substantially improve cost benefit estimates for environmental contaminants, which have the potential to induce beneficial/desirable effects at low doses.
镧是一种稀土元素 (REE)，由于其在众多领域的广泛应用及其在环境中的潜在积累，因此受到了广泛的研究。长期以来，人们一直知道它具有在激素-双相剂量反应框架内刺激植物生长的潜力。本文提供了过去二十年发表的一系列高分辨率研究的证据，这些研究表明镧对植物的诱导激素作用大量且显著。这些发现表明，在危害评估研究方案的研究设计中应建立激素反应，并将其纳入风险评估过程。激素反应还为环境污染物的成本效益评估提供了机会，这些污染物在低剂量下有可能产生有益/理想的效果。
