钾胁迫条件下Ca2+信号抑制剂对外生菌根真菌分泌H+的影响

doi:10.11707/j.1001-7488.20131214

Scientia Silvae Sinicae ›› 2013, Vol. 49 ›› Issue (12): 97-100.doi: 10.11707/j.1001-7488.20131214

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Effects of Ca²⁺ Signal Inhibitors on H⁺ Effluxes by Ectomycorrhizal Fungi under Potassium Stress

Guo Tao^1,2, Dai Jingcheng¹, Zhu Min¹

1. College of Resources and Environment, Southwest University Chongqing 400716;
2. National Monitoring Base for Purple Soil Fertility and Fertilizer Efficiency Chongqing 400716

Received:2012-11-01 Revised:2013-10-05 Online:2013-12-25 Published:2014-01-01

Abstract

Abstract:

In this study, Suillus luteus (Sl01) and Boletus sp. (Bo08), isolated from the acidic forest soil, and Cenococcum geophilum (CgSIV) were cultured in liquid media with various potassium concentrations and Ca²⁺ signal inhibitors to investigate mechanism of H⁺ effluxes by ectomycorrhizal fungi (ECMF) under low potassium stress. The results showed that in normal potassium concentration, H⁺ effluxes by ectomycorrhizal fungi of the three isolates were not inhibited by trifluoperazine (TFP) and ethylene glycol tetraacetic acid (EGTA). In low potassium concentration, the H⁺ efflux by Bo08 and Sl01 was decreased significantly in the presence of TFP and EGTA. The results suggested that Ca²⁺would be a signal factor that could regulate H⁺ efflux by Bo08 and Sl01 in this experiment conditions of low potassium stress on the fungi.

Key words: potassium, Ca²⁺ signal inhibitors, ECMF

CLC Number:

S718.81

Guo Tao, Dai Jingcheng, Zhu Min. Effects of Ca²⁺ Signal Inhibitors on H⁺ Effluxes by Ectomycorrhizal Fungi under Potassium Stress[J]. Scientia Silvae Sinicae, 2013, 49(12): 97-100.

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Effects of Ca²⁺ Signal Inhibitors on H⁺ Effluxes by Ectomycorrhizal Fungi under Potassium Stress

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Effects of Ca2+ Signal Inhibitors on H+ Effluxes by Ectomycorrhizal Fungi under Potassium Stress

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Effects of Ca²⁺ Signal Inhibitors on H⁺ Effluxes by Ectomycorrhizal Fungi under Potassium Stress