Agroscope, Institute for Plant Production Systems, 1964 Conthey, Switzerland.
Laboratoire Interdisciplinaire des Energies de Demain, Université de Paris, 75013 Paris, France.
Int J Mol Sci. 2020 Jun 16;21(12):4279. doi: 10.3390/ijms21124279.
Calcite processed particles (CaPPs, Megagreen) elaborated from sedimentary limestone rock, and finned by tribomecanic process were found to increase photosynthetic CO fixation grapevines and stimulate growth of various cultured plants. Due to their processing, the CaPPs present a jagged shape with some invaginations below the micrometer size. We hypothesised that CaPPs could have a nanoparticle (NP)-like effects on plants. Our data show that CaPPs spontaneously induced reactive oxygen species (ROS) in liquid medium. These ROS could in turn induce well-known cellular events such as increase in cytosolic Ca, biotic ROS generation and activation of anion channels indicating that these CaPPs could activate various signalling pathways in a NP-like manner.
从沉积石灰岩中加工而成的方解石颗粒（Megagreen 牌 CaPPs），经过摩擦机械处理后呈锯齿状，尺寸在微米以下，有一些内陷。我们推测 CaPPs 可能对植物具有纳米颗粒（NP）样的作用。我们的数据表明，CaPPs 在液体培养基中会自发诱导活性氧（ROS）的产生。这些 ROS 反过来又可以诱导细胞内的一些著名事件，如胞质 Ca 的增加、生物 ROS 的产生和阴离子通道的激活，这表明这些 CaPPs 可以以 NP 样的方式激活各种信号通路。
