title: Can arbuscular mycorrhizal fungi reduce Cd uptake and alleviate Cd toxicity of Lonicera japonica grown in Cd-added soils?
abstract: A greenhouse pot experiment was conducted to study the impact of arbuscular mycorrhizal fungi--Glomus versiforme (Gv) and Rhizophagus intraradices (Ri) on the growth, Cd uptake, antioxidant indices [glutathione reductase (GR), ascorbate peroxidase (APX), superoxide dismutase (SOD), catalase (CAT), ascorbate (ASA), glutathione (GSH) and malonaldehyde (MDA)] and phytochelatins (PCs) production of Lonicera japonica in Cd-amended soils. Gv and Ri significantly increased P acquisition, biomass of shoots and roots at all Cd treatments. Gv significantly decreased Cd concentrations in shoots and roots, and Ri also obviously reduced Cd concentrations in shoots but increased Cd concentrations in roots. Meanwhile, activities of CAT, APX and GR, and contents of ASA and PCs were remarkably higher in Gv/Ri-inoculated plants than those of uninoculated plants, but lower MDA and GSH contents in Gv/Ri-inoculated plants were found. In conclusion, Gv and Ri symbiosis alleviated Cd toxicity of L. japonica through the decline of shoot Cd concentrations and the improvement of P nutrition, PCs content and activities of GR, CAT, APX in inoculated plants, and then improved plant growth. The decrease of shoot Cd concentrations in L. japonica inoculated with Gv/Ri would provide a clue for safe production of this plant from Cd-contaminated soils.
authors.affiliation: Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, College of Life Sciences, South China Normal University, Guangzhou 510631, P. R. China.
authors.forename: Qiu-Yun
authors.initials: QY
authors.lastname: Jiang
authors.affiliation: Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, College of Life Sciences, South China Normal University, Guangzhou 510631, P. R. China.
authors.forename: Feng
authors.initials: F
authors.lastname: Zhuo
authors.affiliation: Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, College of Life Sciences, South China Normal University, Guangzhou 510631, P. R. China.
authors.forename: Shi-Hui
authors.initials: SH
authors.lastname: Long
authors.affiliation: Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, College of Life Sciences, South China Normal University, Guangzhou 510631, P. R. China.
authors.forename: Hai-Di
authors.initials: HD
authors.lastname: Zhao
authors.affiliation: Guangzhou Research Academy of Environmental Protection, Guangzhou 510620, P. R. China.
authors.forename: Dan-Jing
authors.initials: DJ
authors.lastname: Yang
authors.affiliation: State Key Laboratory for Bio-control, and School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, P. R. China.
authors.forename: Zhi-Hong
authors.initials: ZH
authors.lastname: Ye
authors.affiliation: Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, College of Life Sciences, South China Normal University, Guangzhou 510631, P. R. China.
authors.forename: Shao-Shan
authors.initials: SS
authors.lastname: Li
authors.affiliation: Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, College of Life Sciences, South China Normal University, Guangzhou 510631, P. R. China.
authors.forename: Yuan-Xiao
authors.initials: YX
authors.lastname: Jing
mesh_terms: D002104:Cadmium / Q000032:analysis / Q000378:metabolism* / Q000633:toxicity; D055137:Glomeromycota / Q000502:physiology*; D015227:Lipid Peroxidation; D031239:Lonicera / Q000187:drug effects / Q000254:growth & development* / Q000378:metabolism / Q000382:microbiology; D038821:Mycorrhizae / Q000502:physiology*; D018384:Oxidative Stress; D054811:Phytochelatins / Q000378:metabolism; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000032:analysis / Q000378:metabolism* / Q000633:toxicity
chemical_list: D012987:Soil; D012989:Soil Pollutants; D002104:Cadmium; D054811:Phytochelatins