title: [Effect of phosphorus supply and signal inhibitors on oxalate efflux in ectomycorrhizal fungi].
abstract: OBJECTIVE
  Phosphorous (P) is one of the essential elements for tree growth in forests. It is beneficial to characterize oxalate secretion by ectomycorrhizal fungi in response to P supply for understanding the mechanism of P mobilization in soils.
  
  
  METHODS
  In the present experiment, the influence of P supplies and inhibitors of Ca2+ signal/anion channel on oxalate efflux in ectomycorrhizal fungi was studied in the pure liquid culture with various P concentrations.
  
  
  RESULTS
  Ectomycorrhizal fungi released a large amount of H+ and organic acids such as oxalate, acetate, malate, citrate and succinate, which are important for mobilization of insoluble P in the soils. Oxalate accounted for 15. 14% to 36. 01% of the total organic acids released by the fungi and was accelerated in culture solution under the condition of low P supply, but inhibited under normal and high P.
  
  
  CONCLUSIONS
  Ectomycorrhizal fungi released a large amount of H+ and organic acids, particularly oxalate, which might be beneficial to inorganic P mobilization in the soils and improvement of P nutrition for their host plants.
authors.forename: Hongjun
authors.initials: H
authors.lastname: Yang
authors.forename: Yong
authors.initials: Y
authors.lastname: Li
authors.forename: Jianguo
authors.initials: J
authors.lastname: Huang
mesh_terms: D001692:Biological Transport; D002118:Calcium / Q000378:metabolism; D003470:Culture Media / Q000737:chemistry / Q000378:metabolism; D005656:Fungal Proteins / Q000235:genetics / Q000378:metabolism; D005658:Fungi / Q000235:genetics / Q000378:metabolism*; D006863:Hydrogen-Ion Concentration; D007473:Ion Channels / Q000235:genetics / Q000378:metabolism; D038821:Mycorrhizae / Q000235:genetics / Q000378:metabolism*; D010070:Oxalates / Q000378:metabolism*; D010758:Phosphorus / Q000378:metabolism*; D012987:Soil / Q000737:chemistry; D012988:Soil Microbiology
chemical_list: D003470:Culture Media; D005656:Fungal Proteins; D007473:Ion Channels; D010070:Oxalates; D012987:Soil; D010758:Phosphorus; D002118:Calcium