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Chromium detoxification in arbuscular mycorrhizal symbiosis mediated by sulfur uptake and metabolism

文献类型：期刊论文

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作者Wu, SL; Hu, YJ; Zhang, X; Sun, YQ; Wu, ZX; Li, T; Lv, JT; Li, JL; Zhang, J; Zheng, LR
刊名ENVIRONMENTAL AND EXPERIMENTAL BOTANY ; ENVIRONMENTAL AND EXPERIMENTAL BOTANY
出版日期2018 ; 2018
卷号147页码:43-52
关键词Arbuscular mycorrhiza Arbuscular mycorrhiza Medicago truncatula Chromium tolerance Sulfur metabolites XANES Medicago truncatula Chromium tolerance Sulfur metabolites XANES
ISSN号0098-8472 ; 0098-8472
DOI10.1016/j.envexpbot.2017.11.010 ; 10.1016/j.envexpbot.2017.11.010
文献子类Article ; Article
英文摘要It has been well demonstrated that arbuscular mycorrhizal (AM) symbiosis can improve plant chromium (Cr) tolerance, but the detoxification mechanisms are still unsolved. In the present study the role of AM symbiosis in plant sulfur (S) acquisition and metabolism related to Cr detoxification was investigated. Medicago truncatula plants were cultivated with/without AM fungus Rhizophagus irregularis in Cr(VI) contaminated soils at two soil S and phosphorus (P) concentrations. Sulfur uptake, transport and metabolism by plants were determined by biochemical and molecular methods. Meanwhile, Cr uptake and transformation were characterized by using spectroscopic methods, including synchrotron based X-ray absorption near edge structure (XANES) analysis. The results indicated that mycorrhizal inoculation improved plant S acquisition by up-regulating the expression of high affinity sulfate transporter genes (i.e. MISULTR1.1, MtSULTR1.2) in plant roots. Mycorrhizal colonization also systematically regulated S transport and metabolism for Cr(VI) detoxification. XANES analysis revealed the Cr immobilization in AM roots by phosphate and histidine-like ligands rather than thiol groups. Correlation analysis further confirmed possible involvement of S metabolites in the relief of Cr induced oxidative stress. Mycorrhizal effects were more pronounced under low P condition. The study allowed a new insight into the mechanisms of enhanced plant Cr tolerance by AM symbiosis.; It has been well demonstrated that arbuscular mycorrhizal (AM) symbiosis can improve plant chromium (Cr) tolerance, but the detoxification mechanisms are still unsolved. In the present study the role of AM symbiosis in plant sulfur (S) acquisition and metabolism related to Cr detoxification was investigated. Medicago truncatula plants were cultivated with/without AM fungus Rhizophagus irregularis in Cr(VI) contaminated soils at two soil S and phosphorus (P) concentrations. Sulfur uptake, transport and metabolism by plants were determined by biochemical and molecular methods. Meanwhile, Cr uptake and transformation were characterized by using spectroscopic methods, including synchrotron based X-ray absorption near edge structure (XANES) analysis. The results indicated that mycorrhizal inoculation improved plant S acquisition by up-regulating the expression of high affinity sulfate transporter genes (i.e. MISULTR1.1, MtSULTR1.2) in plant roots. Mycorrhizal colonization also systematically regulated S transport and metabolism for Cr(VI) detoxification. XANES analysis revealed the Cr immobilization in AM roots by phosphate and histidine-like ligands rather than thiol groups. Correlation analysis further confirmed possible involvement of S metabolites in the relief of Cr induced oxidative stress. Mycorrhizal effects were more pronounced under low P condition. The study allowed a new insight into the mechanisms of enhanced plant Cr tolerance by AM symbiosis.
电子版国际标准刊号1873-7307 ; 1873-7307
WOS关键词X-RAY-ABSORPTION ; X-RAY-ABSORPTION ; ZEA-MAYS L. ; FUNGUS GLOMUS-MOSSEAE ; MEDICAGO-TRUNCATULA ; OXIDATIVE STRESS ; EXTRARADICAL MYCELIUM ; SULFATE TRANSPORTER ; CHAMOMILE PLANTS ; TOLERANCE ; REDUCTION ; ZEA-MAYS L. ; FUNGUS GLOMUS-MOSSEAE ; MEDICAGO-TRUNCATULA ; OXIDATIVE STRESS ; EXTRARADICAL MYCELIUM ; SULFATE TRANSPORTER ; CHAMOMILE PLANTS ; TOLERANCE ; REDUCTION
WOS研究方向Plant Sciences ; Plant Sciences ; Environmental Sciences & Ecology ; Environmental Sciences & Ecology
语种英语 ; 英语
WOS记录号WOS:000424181300005 ; WOS:000424181300005
源URL[http://ir.ihep.ac.cn/handle/311005/285605]  
专题高能物理研究所_多学科研究中心
高能物理研究所_实验物理中心
作者单位中国科学院高能物理研究所
推荐引用方式
GB/T 7714		 Wu, SL,Hu, YJ,Zhang, X,et al. Chromium detoxification in arbuscular mycorrhizal symbiosis mediated by sulfur uptake and metabolism, Chromium detoxification in arbuscular mycorrhizal symbiosis mediated by sulfur uptake and metabolism[J]. ENVIRONMENTAL AND EXPERIMENTAL BOTANY, ENVIRONMENTAL AND EXPERIMENTAL BOTANY,2018, 2018,147, 147:43-52, 43-52.
APA Wu, SL.,Hu, YJ.,Zhang, X.,Sun, YQ.,Wu, ZX.,...&郑黎荣.(2018).Chromium detoxification in arbuscular mycorrhizal symbiosis mediated by sulfur uptake and metabolism.ENVIRONMENTAL AND EXPERIMENTAL BOTANY,147,43-52.
MLA Wu, SL,et al."Chromium detoxification in arbuscular mycorrhizal symbiosis mediated by sulfur uptake and metabolism".ENVIRONMENTAL AND EXPERIMENTAL BOTANY 147(2018):43-52.

入库方式： OAI收割

来源：高能物理研究所

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