农业环境科学学报2017，Vol.36Issue(1)：24-31,8.DOI:10.11654/jaes.2016-1009
不同品种空心菜对重污染土壤砷的吸收累积及其亚细胞分布
Accumulation and subcellular distribution of arsenic in water spinach(Ipomoea aquatica)cultivars from ar-senic contaminated soil
摘要
Abstract
Comparison of uptake and distribution of arsenic(As)accumulation in different cultivars of water spinach and its mechanisms are poorly investigated. A plot experiment in soil pools was conducted to study the effect of soil As stress on plant growth, As accumulation and As distribution in subcellular fraction of nineteen water spinach(Ipomoea aquatica)cultivars. The results showed that all those 19 Ipomoea aquatica cultivars could be growth under 66.4 mg·kg-1 As of soil stress treatment. However, there was significant difference in the biomass, As accumulation among Ipomoea aquatica cultivars. And the concentration of above-ground portion of Ipomoea aquatica cultivars varied from 0.73 to 191.12 mg·kg-1 As, all beyond the limits of the standard GB 2012—2762. In addition, four high As accumulating cultivars and three low As accumulating cultivars from 19 cultivars of Ipomoea aquatica were screened out. During the 66.4 mg·kg-1 As exposure, the pro-portion of each constituent was in the order of soluble fraction(49.06%~77.44%)﹥cell organ(19.90%~46.82%)﹥cell wall(2.22%~16.73%), and cytoplasmic organelles and the cell wall maintained low levels of As.关键词
空心菜品种/As累积/亚细胞/As污染土壤Key words
Ipomoea aquatica cultivars/As accumulation/subcellular fraction/arsenic contaminated soil分类
资源环境引用本文复制引用
崔星怡,秦俊豪,李智鸣,黎华寿..不同品种空心菜对重污染土壤砷的吸收累积及其亚细胞分布[J].农业环境科学学报,2017,36(1):24-31,8.基金项目
国家高技术研究发展计划（“863计划”）项目（2013AA102402）；国家自然科学基金资助项目（41271469）；广东省科技计划项目（2013B020303001，2015B090903077）Project supportedThe National High Technology Research and Development Program of China（2013AA102402）；The National Natural Science Foundation of China（41271469）；The Science and Technology Planning Project of Guangdong Province，China （）
