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Do arbuscular mycorrhizal fungi affect cadmium uptake kinetics, subcellular distribution and chemical forms in rice?
Sci Total Environ. 2016 Nov 15; 571:1183-90.ST

Abstract

Rice (Oryza sativa L.) plants were inoculated with two species of arbuscular mycorrhizal fungi (AMF) - Rhizophagus intraradices (RI) and Funneliformis mosseae (FM) and grown for 60days to ensure strong colonization. Subsequently, a short-term hydroponic experiment was carried out to investigate the effects of AMF on cadmium (Cd) uptake kinetics, subcellular distribution and chemical forms in rice exposed to six Cd levels (0, 0.005, 0.01, 0.025, 0.05, 0.1mM) for three days. The results showed that the uptake kinetics of Cd fitted the Michaelis-Menten model well (R(2)>0.89). AMF significantly decreased the Cd concentrations both in shoots and roots in Cd solutions. Furthermore, the decrement of Cd concentrations by FM was significantly higher than RI treatment in roots. AMF reduced the Cd concentrations markedly in the cell wall fractions at high Cd substrate (≥0.025mM). The main subcellular fraction contributed to Cd detoxification was cell wall at low Cd substrate (<0.05mM), while vacuoles at high Cd substrate (≥0.05mM). Moreover, the concentrations and proportions of Cd in inorganic and water-soluble form also reduced by AMF colonization at high Cd substrate (≥0.05mM), both in shoots and roots. This suggested that AMF could convert Cd into inactive forms which were less toxic. Therefore, AMF could enhance rice resistance to Cd through altering subcellular distribution and chemical forms of Cd in rice.

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Authors+Show Affiliations

Li H
Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, and Guangzhou Key Laboratory of Environmental Exposure and Health, School of Environment, Jinan University, Guangzhou 510632, PR China. Electronic address: lihuizsu@126.com.
Luo N
Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, and Guangzhou Key Laboratory of Environmental Exposure and Health, School of Environment, Jinan University, Guangzhou 510632, PR China.
Zhang LJ
Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, and Guangzhou Key Laboratory of Environmental Exposure and Health, School of Environment, Jinan University, Guangzhou 510632, PR China.
Zhao HM
Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, and Guangzhou Key Laboratory of Environmental Exposure and Health, School of Environment, Jinan University, Guangzhou 510632, PR China.
Li YW
Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, and Guangzhou Key Laboratory of Environmental Exposure and Health, School of Environment, Jinan University, Guangzhou 510632, PR China.
Cai QY
Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, and Guangzhou Key Laboratory of Environmental Exposure and Health, School of Environment, Jinan University, Guangzhou 510632, PR China.
Wong MH
Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, and Guangzhou Key Laboratory of Environmental Exposure and Health, School of Environment, Jinan University, Guangzhou 510632, PR China; Consortium on Environment, Health, Education and Research (CHEER), and Department of Science and Environmental Studies, Hong Kong Institute of Education, Tai Po, Hong Kong SAR, PR China.
Mo CH
Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, and Guangzhou Key Laboratory of Environmental Exposure and Health, School of Environment, Jinan University, Guangzhou 510632, PR China. Electronic address: tchmo@jnu.edu.cn.

MeSH

CadmiumKineticsMycorrhizaeOryzaPlant RootsPlant ShootsSoil PollutantsSpecies SpecificityTissue Distribution

Pub Type(s)

Journal Article

Language

eng

PubMed ID

27450963

Citation

Li, Hui, et al. "Do Arbuscular Mycorrhizal Fungi Affect Cadmium Uptake Kinetics, Subcellular Distribution and Chemical Forms in Rice?" The Science of the Total Environment, vol. 571, 2016, pp. 1183-90.
Li H, Luo N, Zhang LJ, et al. Do arbuscular mycorrhizal fungi affect cadmium uptake kinetics, subcellular distribution and chemical forms in rice? Sci Total Environ. 2016;571:1183-90.
Li, H., Luo, N., Zhang, L. J., Zhao, H. M., Li, Y. W., Cai, Q. Y., Wong, M. H., & Mo, C. H. (2016). Do arbuscular mycorrhizal fungi affect cadmium uptake kinetics, subcellular distribution and chemical forms in rice? The Science of the Total Environment, 571, 1183-90. https://doi.org/10.1016/j.scitotenv.2016.07.124
Li H, et al. Do Arbuscular Mycorrhizal Fungi Affect Cadmium Uptake Kinetics, Subcellular Distribution and Chemical Forms in Rice. Sci Total Environ. 2016 Nov 15;571:1183-90. PubMed PMID: 27450963.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Do arbuscular mycorrhizal fungi affect cadmium uptake kinetics, subcellular distribution and chemical forms in rice? AU - Li,Hui, AU - Luo,Na, AU - Zhang,Li Jun, AU - Zhao,Hai Ming, AU - Li,Yan Wen, AU - Cai,Quan Ying, AU - Wong,Ming Hung, AU - Mo,Ce Hui, Y1 - 2016/07/20/ PY - 2016/06/12/received PY - 2016/07/15/revised PY - 2016/07/17/accepted PY - 2016/7/25/entrez PY - 2016/7/28/pubmed PY - 2018/3/22/medline KW - Arbuscular mycorrhizal fungi KW - Heavy metal KW - Mechanism KW - Rice SP - 1183 EP - 90 JF - The Science of the total environment JO - Sci Total Environ VL - 571 N2 - Rice (Oryza sativa L.) plants were inoculated with two species of arbuscular mycorrhizal fungi (AMF) - Rhizophagus intraradices (RI) and Funneliformis mosseae (FM) and grown for 60days to ensure strong colonization. Subsequently, a short-term hydroponic experiment was carried out to investigate the effects of AMF on cadmium (Cd) uptake kinetics, subcellular distribution and chemical forms in rice exposed to six Cd levels (0, 0.005, 0.01, 0.025, 0.05, 0.1mM) for three days. The results showed that the uptake kinetics of Cd fitted the Michaelis-Menten model well (R(2)>0.89). AMF significantly decreased the Cd concentrations both in shoots and roots in Cd solutions. Furthermore, the decrement of Cd concentrations by FM was significantly higher than RI treatment in roots. AMF reduced the Cd concentrations markedly in the cell wall fractions at high Cd substrate (≥0.025mM). The main subcellular fraction contributed to Cd detoxification was cell wall at low Cd substrate (<0.05mM), while vacuoles at high Cd substrate (≥0.05mM). Moreover, the concentrations and proportions of Cd in inorganic and water-soluble form also reduced by AMF colonization at high Cd substrate (≥0.05mM), both in shoots and roots. This suggested that AMF could convert Cd into inactive forms which were less toxic. Therefore, AMF could enhance rice resistance to Cd through altering subcellular distribution and chemical forms of Cd in rice. SN - 1879-1026 UR - https://www.unboundmedicine.com/medline/citation/27450963/Do_arbuscular_mycorrhizal_fungi_affect_cadmium_uptake_kinetics_subcellular_distribution_and_chemical_forms_in_rice DB - PRIME DP - Unbound Medicine ER -