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题名: Water management, rice varieties and mycorrhizal inoculation influence arsenic concentration and speciation in rice grains
作者: Zhang, Xin; Wu, Songlin; Ren, Baihui; Chen, Baodong
刊名: MYCORRHIZA
出版日期: 2016-05
卷号: 26, 期号:4, 页码:299-309
关键词: Rice ; Arsenic ; Arbuscular mycorrhizal fungi ; Anaerobic/aerobic cultivation ; Metal tolerance
DOI: 10.1007/s00572-015-0669-9
部门归属: 城市与区域生态国家重点实验室
英文摘要: A pot experiment was carried out to investigate the effects of water management and mycorrhizal inoculation on arsenic (As) uptake by two rice varieties, the As-resistant BRRI dhan 47 (B47) and As-sensitive BRRI dhan 29 (B29). Grain As concentration of B47 plants was significantly lower than that of B29, and grain As concentration of B47 was higher under flooding conditions than that under aerobic conditions. In general, mycorrhizal inoculation (Rhizophagus irregularis) had no significant effect on grain As concentrations, but decreased the proportion of inorganic arsenic (iAs) in grains of B47. The proportion of dimethylarsinic acid (DMA) in the total grain As was dramatically higher under flooding conditions. Results demonstrate that rice variety selection and appropriate water management along with mycorrhizal inoculation could be practical countermeasures to As accumulation and toxicity in rice grains, thus reducing health risks of As exposure in rice diets.
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/35698
Appears in Collections:城市与区域生态国家重点实验室_期刊论文

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