title: The effect of arbuscular mycorrhizal fungi and phosphate amendement on arsenic uptake, accumulation and growth of Pteris vittata in As-contaminated soil.
abstract: This study investigated the contributions of mixed arbuscular mycorrhizal fungi (AMF) inoculum-i.e., mixed populations of indigenous mycorrhiza (Glomus intraradices, Glomus geosporum, Glomus mosseae) (IM) isolated from arsenic (As) contaminated soil and non-indigenous mycorrhiza such as G. mosseae (GM), which possess metal tolerance characteristics-and the addition of phosphate rock (PR) towards the uptake and accumulation of As by Pteris vittata (As hyperaccumlator) grown in As-contaminated soil. Regardless of As levels added to soil, plant growth was substantially improved in amended treatments when compared with the control. In addition, root surface area (0 mg/kg As: 15.2 cm2; 150 mg/kg As: 16.9 cm2; 300 mg/kg As: 20.7 cm2), chlorophyll contents (0 mg/kg As: 1.16 mg/g; 150 mg/kg As: 1.46 mg/g; 300 mg/kg As: 1.81 mg/g) and As translocation factor (0 mg/kg As: 0; 150 mg/kg As: 4.29; 300 mg/kg As: 5.22) in P. vittata of PR+IM/GM were also increased. Such combination could further enhance plant growth (indicated by higher N, P and chlorophyll contents) and As uptake by P. vittata.
authors.affiliation: Croucher Institute for Environmental Sciences, Department of Biology, Hong Kong Baptist University, Hong Kong, People's Republic of China.
authors.forename: Ho Man
authors.initials: HM
authors.lastname: Leung
authors.forename: Fu Yong
authors.initials: FY
authors.lastname: Wu
authors.forename: Kwai Chung
authors.initials: KC
authors.lastname: Cheung
authors.forename: Zhi Hong
authors.initials: ZH
authors.lastname: Ye
authors.forename: Ming Hung
authors.initials: MH
authors.lastname: Wong
mesh_terms: D001151:Arsenic / Q000378:metabolism* / Q000633:toxicity*; D001673:Biodegradation, Environmental / Q000187:drug effects; D018533:Biomass; D002734:Chlorophyll / Q000378:metabolism; D015169:Colony Count, Microbial; D055137:Glomeromycota / Q000187:drug effects / Q000254:growth & development / Q000502:physiology; D038821:Mycorrhizae / Q000187:drug effects / Q000254:growth & development / Q000502:physiology*; D009584:Nitrogen / Q000378:metabolism; D010710:Phosphates / Q000302:isolation & purification*; D010758:Phosphorus / Q000378:metabolism; D032495:Pteris / Q000033:anatomy & histology / Q000187:drug effects / Q000254:growth & development* / Q000382:microbiology*; D012987:Soil / Q000032:analysis; D012989:Soil Pollutants / Q000633:toxicity*; D013499:Surface Properties / Q000187:drug effects
chemical_list: D010710:Phosphates; D012987:Soil; D012989:Soil Pollutants; D002734:Chlorophyll; D010758:Phosphorus; D001151:Arsenic; D009584:Nitrogen