title: Can arbuscular mycorrhizal fungi improve grain yield, As uptake and tolerance of rice grown under aerobic conditions?
abstract: The effects of arbuscular mycorrhizal fungi (AMF) -Glomus intraradices and G. geosporum on arsenic (As) and phosphorus (P) uptake by lowland (Guangyinzhan) and upland rice (Handao 502) were investigated in soil, spiked with and without 60 mg As kg(-1). In As-contaminated soil, Guangyinzhan inoculated with G. intraradices or Handao 502 inoculated with G. geosporum enhanced As tolerance, grain P content, grain yield. However, Guangyinzhan inoculated with G. geosporum or Handao 502 inoculated with G. intraradices decreased grain P content, grain yield and the molar ratio of grain P/As content, and increased the As concentration and the ratio of grain/straw As concentration. These results show that rice/AMF combinations had significant (p < 0.05) effects on grain As concentration, grain yield and grain P uptake. The variation in the transfer and uptake of As and P reflected strong functional diversity in AM (arbuscular mycorrhizal) symbioses.
authors: Croucher Institute for Environmental Sciences, Department of Biology, Hong Kong Baptist University, Kowloon Tong, Hong Kong Special Administrative Region, PR China.
authors: H
authors: H
authors: Li
authors: Z H
authors: ZH
authors: Ye
authors: W F
authors: WF
authors: Chan
authors: X W
authors: XW
authors: Chen
authors: F Y
authors: FY
authors: Wu
authors: S C
authors: SC
authors: Wu
authors: M H
authors: MH
authors: Wong
mesh_terms: D000222:Adaptation, Physiological; D000332:Aerobiosis; D000383:Agriculture / Q000379:methods; D001151:Arsenic / Q000032:analysis / Q000378:metabolism / Q000633:toxicity*; D038821:Mycorrhizae / Q000378:metabolism*; D012275:Oryza / Q000187:drug effects* / Q000382:microbiology / Q000502:physiology; D010758:Phosphorus / Q000032:analysis / Q000378:metabolism; D012987:Soil / Q000737:chemistry; D012988:Soil Microbiology; D012989:Soil Pollutants / Q000378:metabolism / Q000633:toxicity*
chemical_list: D012987:Soil; D012989:Soil Pollutants; D010758:Phosphorus; D001151:Arsenic