caa a22 4500 477111122 CHVBK 20180405111609.0 cr unu---uuuuu 170330e19960201xx s 000 0 eng 10.1007/BF00011651 doi (NATIONALLICENCE)springer-10.1007/BF00011651 In vitro weathering of phlogopite by ectomycorrhizal fungi [Elektronische Daten] II. Effect of K+ and Mg2+ deficiency and N sources on accumulation of oxalate and H+ [Fabienne Paris, Bernard Botton, Frédéric Lapeyrie] Oxalate accumulation in external medium under hyphal mats of two ectomycorrhizal species is strongly stimulated (1.7 to 35 fold) by a simultaneous depletion of available K+ and Mg2+. Pisolithus tinctorius strain 441 accumulates oxalate both on NH4−N and on NO3−N whereas Paxillus involutus strain COU only accumulates oxalate on NO3−N. On NO3−N, under a simultaneous K+ and Mg2+ deficiency, P. involutus COU is a very active oxalate producer compared to P. tinctorius 441. The present results could explain the various mineralogical evolutions of a phlogopite mica previously recorded under P. involutus COU or P. tinctorius 441 and suggest a key role for fungal oxalic acid during mineral weathering in response to nutrient deficiency. Kluwer Academic Publishers, 1996 ectomycorrhizal fungi nationallicence K+ and Mg2+ deficiency nationallicence mica nationallicence oxalate nationallicence Pisolithus tinctorius nationallicence H+ nationallicence Paris Fabienne Centre de Recherches Forestiéres de Nancy, Laboratoire de Microbiologie, INRA, Champenoux, F-54280, Seichamps, France aut Botton Bernard Laboratoire de Biologie Forestiéres, associé INRA, Université de Nancy I, BP 239, F-54506, Vandoeuvre-lés-Nancy Cedex, France aut Lapeyrie Frédéric Centre de Recherches Forestiéres de Nancy, Laboratoire de Microbiologie, INRA, Champenoux, F-54280, Seichamps, France aut Plant and Soil Kluwer Academic Publishers; gopher://gopher.wkap.nl 179/1(1996-02-01), 141-150 0032-079X 179:1<141 1996 179 11104 https://doi.org/10.1007/BF00011651 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00011651 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Paris Fabienne Centre de Recherches Forestiéres de Nancy, Laboratoire de Microbiologie, INRA, Champenoux, F-54280, Seichamps, France aut NATIONALLICENCE 700 1- Botton Bernard Laboratoire de Biologie Forestiéres, associé INRA, Université de Nancy I, BP 239, F-54506, Vandoeuvre-lés-Nancy Cedex, France aut NATIONALLICENCE 700 1- Lapeyrie Frédéric Centre de Recherches Forestiéres de Nancy, Laboratoire de Microbiologie, INRA, Champenoux, F-54280, Seichamps, France aut NATIONALLICENCE 773 0- Plant and Soil Kluwer Academic Publishers; gopher://gopher.wkap.nl/ 179/1(1996-02-01), 141-150 0032-079X 179:1<141 1996 179 11104 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer