Influence of lanthanum on chloroplast ultrastructure of soybean leaves under ultraviolet-B stress

作     者：彭倩 周青 

作者机构：The Key Laboratory of Environmental ScienceSchool of Environmental and Civil EngineeringJiangnan UniversityWuxi 214122China The Key Laboratory of Industrial BiotechnologyMinistry of EducationJiangnan UniversityWuxi 214122China 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2009年第27卷第2期

页      面：304-307页

核心收录：

学科分类：0709[理学-地质学] 0819[工学-矿业工程] 0708[理学-地球物理学] 09[农学] 0903[农学-农业资源与环境] 0703[理学-化学] 

基　　金：supported by the National Natural Science Foundation of China (30570323) the Special Foundation for Rare Earth of State Planning Committee (IFZ20051210) 

主　　题：lanthanum ultraviolet-B irradiation soybean leaves chloroplast ultrastructure rare earths 

摘      要：In order to investigate the effects of lanthanum（Ⅲ） on cell ultrastructure of soybean leaves under elevated ultraviolet-B irradiation （UV-B, 280-320 nm）, the chloroplast ultrastructure of soybean seedlings was studied by hydroponics under laboratory conditions. The resuits showed that the thylakoid in chloroplast was orderly and clearly as soybean leaves were pretreated by La（Ⅲ）. The thylakoid was indis- tinctly disordered, expanded and even indiscoverable in the chloroplast under UV-B stress. The impact on the thylakoid by the high intensity UV-B irradiation （T2） was bigger than that by the low intensity UV-B irradiation （T1）. However, the destruction of the chloroplast structure caused by UV-B stress was alleviated by La（Ⅲ）, and the arrangement of the thylakoid in the chloroplast became orderly and clearly. The effect of the alleviation by La（Ⅲ） under the low intensity UV-B irradiation （T1） was better than that under the high intensity UV-B irradiation （T2）.