Crop plants transport irregularly shaped mineral particles from root to shoot:Tracking and quantifying  

作　　者：Jie Yang Lianzhen Li Chen Tu Ruije Lia Yongming Luo 

机构地区：[1]State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,Nanjing 210008,China [2]College of Envronmental Sciences and Engineering,Qingdao University,Qingdao 266071,China [3]University of Chinese Academy of Sciences,Bejing 100049,China

出　　处：《Eco-Environment & Health》2024年第4期458-465,共8页生态环境与健康(英文)

基　　金：support by the National Natural Science Foundation of China (41991330,22241602,and 42177039);the Postdoctoral Fellowship Program of CPSF (GZC20232783).

摘　　要：Mineral particles,ubiquitous in soils,influence crop plant growth by carrying nutrients and pollutants.While the uptake of dissolved mineral nutrients is well-established,the direct incorporation of irregular mineral particles into plants remains unclear.This study investigated the uptake and transport of kaolin particles,representative of minerals,by wheat and lettuce seedlings using hydroponic and soil cultures.Covalent labeling and advanced microscopy revealed that kaolin enters root steles at lateral root emergence sites,followed by transport to shoots.Fluorescent dyes and lanthanum(La)-labeled kaolin particles demonstrated that wheat surpassed lettuce in kaolin uptake in hydroponics,but both plants showed similar levels of particles in the shoots.Translocation factors(TFs)for kaolin were significantly higher in soil(0.089 for wheat,0.039 for lettuce)compared to hydroponics(0.001 for wheat,0.003 for lettuce).These findings provide compelling evidence for the direct uptake and transport of kaolin particles in crop plants.This opens new avenues for research on the interactions between plant and mineral particles,including other colloidal particles,in terrestrial ecosystems.

关 键 词：Kaolin particles WHEAT LETTUCE Uptake and transport Translocation factors 

分 类 号：S51[农业科学—作物学]