Oxic and anoxic conditions affect arsenic (As) accumulation and arsenite transporter expression in rice

被引：61
作者：
Wu, Chuan [1 ]
Huang, Liu [1 ]
Xue, Sheng-Guo [1 ]
Pan, Wei-Song [2 ]
Zou, Qi [1 ]
Hartley, William [3 ]
Wong, Ming-Hung [4 ,5 ]
机构：
[1] Cent S Univ, Sch Met & Environm, Changsha 410083, Hunan, Peoples R China
[2] Hunan Agr Univ, Coll Biosci & Biotechnol, Changsha 410128, Hunan, Peoples R China
[3] Harper Adams Univ, Crop & Environm Sci Dept, Newport TF10 8NB, Shrops, England
[4] Hong Kong Inst Educ, Consortium Hlth Environm Educ & Res CHEER, Tai Po, Hong Kong, Peoples R China
[5] Jinan Univ, Sch Environm, Guangzhou, Guangdong, Peoples R China
来源：
CHEMOSPHERE | 2017年 / 168卷
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
Arsenic accumulation; Arsenite; Rice genotype; Flooding; Aquaporin; RADIAL OXYGEN LOSS; ORYZA-SATIVA L; IRON PLAQUE-FORMATION; WATER MANAGEMENT; GEOGRAPHICAL VARIATION; ROOT AERATION; PADDY SOIL; LOSS ROL; SPECIATION; SILICON;
D O I：
10.1016/j.chemosphere.2016.10.114
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Arsenic (As) exposure from rice consumption has now become a global health issue. This study aimed to investigate the effects of rice rhizosphere oxic conditions on silicate transporter (responsible for arsenite transportation) expressions, and on As accumulation and speciation in four rice genotypes, including two hybrid genotypes (Xiangfengyou9, Shenyou9586) and two indica subspecies (Xiangwanxian17, Xiangwanxian12). Oxic and anoxic treatments have different effects on root length (p < 0.001) and weight (p < 0.05). Total As concentrations in roots were dramatically lower in oxic treatments (88.8-218 mg/kg), compared to anoxic treatments (147-243 mg/kg) (p < 0.001). Moreover, root and shoot arsenite concentrations in oxic treatments were lower than that in anoxic treatments in arsenite treatments. The relative abundance of silicate transporter expressions displayed a trend of down-regulation in oxic treatments compared to anoxic treatments, especially significantly different for Xiangwanxian17, Xiangwanxian12 in Lsi1 expressions (p < 0.05), Xiangfengyou9, Shenyou9586, Xiangwanxian17 in Lsi2 expressions (p < 0.05). However, there were no significant differences of transporter expressions in different As treatments and genotypes. It may be a possible reason for low As accumulation in rice growing aerobically compared to flooded condition and a potential route to reduce the health risk of As in rice. (C) 2016 Elsevier Ltd. All rights reserved.
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收藏
页码：969 / 975
页数：7
相关论文
共 58 条
[1]   Arsenic accumulation and metabolism in rice (Oryza sativa L.) [J].
Abedin, MJ ;
Cresser, MS ;
Meharg, AA ;
Feldmann, J ;
Cotter-Howells, J .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2002, 36 (05) :962-968
[2]   Effects of Water Management on Cadmium and Arsenic Accumulation and Dimethylarsinic Acid Concentrations in Japanese Rice [J].
Arao, Tomohito ;
Kawasaki, Akira ;
Baba, Koji ;
Mori, Shinsuke ;
Matsumoto, Shingo .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2009, 43 (24) :9361-9367
[3]   Speciation of arsenic in rice and estimation of daily intake of different arsenic species by Brazilians through rice consumption [J].
Batista, Bruno L. ;
Souza, Juliana M. O. ;
De Souza, Samuel S. ;
Barbosa, Fernando, Jr. .
JOURNAL OF HAZARDOUS MATERIALS, 2011, 191 (1-3) :342-348
[4]   Arsenic contamination of groundwater and drinking water in Vietnam: A human health threat [J].
Berg, M ;
Tran, HC ;
Nguyen, TC ;
Pham, HV ;
Schertenleib, R ;
Giger, W .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2001, 35 (13) :2621-2626
[5]   Arsenic in wetland vegetation: Availability, phytotoxicity, uptake and effects on plant growth and nutrition [J].
Carbonell, AA ;
Aarabi, MA ;
DeLaune, RD ;
Gambrell, RP ;
Patrick, WH .
SCIENCE OF THE TOTAL ENVIRONMENT, 1998, 217 (03) :189-199
[6]   Arsenite transporters expression in rice (Oryza sativa L.) associated with arbuscular mycorrhizal fungi (AMF) colonization under different levels of arsenite stress [J].
Chen, Xunwen ;
Li, Hui ;
Chan, Wai Fung ;
Wu, Chuan ;
Wu, Fuyong ;
Wu, Shengchun ;
Wong, Ming Hung .
CHEMOSPHERE, 2012, 89 (10) :1248-1254
[7]   Aerenchyma and an inducible barrier to radial oxygen loss facilitate root aeration in upland, paddy and deep-water rice (Oryza sativa L.) [J].
Colmer, TD .
ANNALS OF BOTANY, 2003, 91 (02) :301-309
[8]   Root aeration in rice (Oryza sativa):: evaluation of oxygen, carbon dioxide, and ethylene as possible regulators of root acclimatizations [J].
Colmer, TD ;
Cox, MCH ;
Voesenek, LACJ .
NEW PHYTOLOGIST, 2006, 170 (04) :767-777
[9]   Long-distance transport of gases in plants: a perspective on internal aeration and radial oxygen loss from roots [J].
Colmer, TD .
PLANT CELL AND ENVIRONMENT, 2003, 26 (01) :17-36
[10]  
Comis D., 1996, AGR RES, V45, P4
123456