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.pdf

2017,36(1):24-31
农业环境科学学报
2017年1月
Journal of Agro-environment Science
崔星怡,秦俊豪,李智鸣,等.不同品种空心菜对重污染土壤仲的吸收累积及其业细胞分布农业环境科学学报,2017,36(1):24-3
CUI Xin-yi QIN Jun-ha LI Zhi-ming et al Accumulation and subcellular is ution of arsenic in water pinachpma aquatica cultivars from
arsenic contaminated soil[] Joumnal of Agr-fnironmenr Science, 2017, 36(1): 24-3
不同品种空心菜对重污染士壤砷的
吸收累积及其亚细胞分布
崔星怡,…,秦俊豪2,李智鸣2,黎华寿2
(1.华南农业大学农业部华南热带农业环境重点实验室,广州510642;2.广东省现代生态农业与循环农业工程技术研究中心
州510642:;3.广东省高等学校农业生态与农村环境重点实验室,广州510642
摘要:采用水泥池小区试验研究了上壤As污染(66.4mgkg)胁迫对19种空心菜生长、As累积以及As的亚细胞分布的影响。结果
表明,各品种空心菜均能生长,但不同品种空心菜生物量及As累积量存在显者差异(P<0.05),地上.部As含量范为0.73~191.12mg
kg',均超出食品中污染限量的标准(0.5mg-kg)。台湾白骨柳叶空心菜、泰国白梗柳叶空心菜、油青空心菜3个品种为相对低累积品
种;台湾大叶白骨空心菜、菜农D-95空心菜、港种青绿叶空心菜、泰国竹叶空心菜4个品种为相对高累积品种。19个品种空心菜亚
细胞中固持AS含量大小顺序为胞质(49.06%~77.44%)>细胞器(19.90%-46.82%)>细胞壁(2.22%~16.73%
关键词:空心菜品种;As累积;亚细胞;As污染上壤
中图分类号:X171.5文献标志码:A文章编号:1672-2043(2017)01-0024-08doi:10.116564/aes.2016-1009
Accumulation and subcellular distribution of arsenic in water spinach(Ipomoea aquatica )cultivars from ar
senic contaminated soil
CUI Xing-yi122, QIN Jun-hao, LI Zhi-ming2, LI Hua-shou25
(1. Key Laboratory of Agro-environment in the Tropi Ministry of Agriculture P. R. China, South China Agricultural University, Guangzhou
510642, China 2. Guangdong Engineerin Research Center for Modern Eco-ariculure and Cirular lure Ganzhou 510642, China,
3. Key Laboratory of Agroecology and Rural Environment of Guangdong Regular Higher Education Institutions, Guangzhou 510642, China
Abstract Comparison of uptake and distribution of arsenic A accumulation in different cultivars of water spinach and its mechanisms are
poorly investigated A plot experiment in oil pools was conducted to study the effect of soil As stress on plant growth, As accumulation and
As distribution in subcellular raction of nine ee water spinach lpomoea aquatica cultivars. The results showed that all those 19 pome
aquatica cultivars could be growth under 66.4 mg. k 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 pomoea aquatica cultivars varied
from 0. 73 to 191. 12 mg k As, all beyond the limits of the standard GB 2012-2762. In addition, four high As accumulating cultivars and
three ow As accumulating cultivars rom 19 ivas of Ipomea aquatica were ned out During the 66.4 mg kg 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
Keywords: Ipomoea aquatica cultivars; As accumulation; subcellular fraction; arsenic contaminated soil
收稿日期:2016-08-06
作者简介:崔星怡(1992一),女,硕土研究生,主要从事土壤重金属和污染水体的生态修复。E-mail: stancil620 Foxmail. com
通信作者:黎华寿E-mail.lihuashou@scau.edu.cn
基金项目:国家高投术研究发展计刘(“863计划”)项月(2013A102402):国家自然科学基金资助项日(41271469);东省科技计刘项日
(2013B020303001,2015B090903077
Project supported: The National High Technology Research and Development Program ofchina(2013AA102402): The National Natural Science Foundation
of China( 41271469) ]le Seience and Technlogy P lanin r ect of Guang ovince, hina(2013 02030301 2015B090903077
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