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| Accumulation and subcellular distribution of arsenic in water spinach(Ipomoea aquatica) cultivars from arsenic contaminated soil |
| Received:August 06, 2016 |
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| KeyWord:Ipomoea aquatica cultivars;As accumulation;subcellular fraction;arsenic contaminated soil |
| Author Name | Affiliation | E-mail | | CUI Xing-yi | Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture, P. R. China, South China Agricultural University, Guangzhou 510642, China
Guangdong Engineering Research Center for Modern Eco-agriculture and Circular Agriculture, Guangzhou 510642, China
Key Laboratory of Agroecology and Rural Environment of Guangdong Regular Higher Education Institutions, Guangzhou 510642, China | | | QIN Jun-hao | Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture, P. R. China, South China Agricultural University, Guangzhou 510642, China
Guangdong Engineering Research Center for Modern Eco-agriculture and Circular Agriculture, Guangzhou 510642, China | | | LI Zhi-ming | Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture, P. R. China, South China Agricultural University, Guangzhou 510642, China
Guangdong Engineering Research Center for Modern Eco-agriculture and Circular Agriculture, Guangzhou 510642, China | | | LI Hua-shou | Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture, P. R. China, South China Agricultural University, Guangzhou 510642, China
Guangdong Engineering Research Center for Modern Eco-agriculture and Circular Agriculture, Guangzhou 510642, China
Key Laboratory of Agroecology and Rural Environment of Guangdong Regular Higher Education Institutions, Guangzhou 510642, China | lihuashou@scau.edu.cn |
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| 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 proportion 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. |
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