期刊文献+

铝胁迫下外生菌根真菌对土壤无机磷的溶解释放

Dissolution and Release of Inorganic Phosphorus from Soil by Ectomycorrhizal Fungi under Aluminum Stress
下载PDF
导出
摘要 [目的]研究铝胁迫下外生菌根真菌对土壤无机磷的溶解释放。[方法]铝胁迫下,以彩色豆马勃(Pisolithus tinctorius,编号Pt)和松乳菇(Lactarius delicious,编号Ld)为供试菌株,土壤为唯一磷源,采用液体培养试验研究菌丝生长情况,以及对土壤无机磷的活化。[结果]在铝胁迫下,2株外生菌根真菌的生物量随着铝离子浓度的升高,表现为先增高后降低的趋势,其中,在0~2.0 mmol/L铝离子浓度下,Pt的生物量均大于Ld,说明Pt的抗铝毒能力强于Ld。此外,p H在铝离子胁迫下显著下降,2株外生菌根真菌不同程度地活化土壤中无机磷。[结论]外生菌根真菌的抗铝和溶磷能力与其分泌的氢离子和有机酸有关。 [Objective] To study the dissolution and release of inorganic phosphorus from soil by ectomycorrhizal fungi under aluminum stress.[Method]Pisolithus tinctorius( Pt) and Lactarius delicious( Ld) were cultured in liquid Pachlewsk medium with soil as the source of phosphorus( P) under aluminum stress to study the fungal growth,and changes of soil inorganic P were measured to study P mobilization from soil by ectomycorrhizal fungi( ECMF). [Result] The fungal growth first increased and then decreased with the increase of aluminum concentration. When aluminum concentration varied from 0 to 2. 0 mmol / L,the biomass of Pt was higher than that of Ld,showing that the resistance of Pt to aluminum toxicity was stronger than that of Ld. In addition,the p H of culture mediums decreased significantly,and the soil inorganic P was mobilized by ECMF at different levels. [Conclusion] The ability of ECMF to resist aluminum and mobilize P is related to hydrogen ions and organic acids secreted by ECMF.
出处 《安徽农业科学》 CAS 2016年第19期143-144,237,共3页 Journal of Anhui Agricultural Sciences
基金 江苏省高等学校大学生实践创新创业训练计划项目"铝胁迫下外生菌根真菌对土壤无机磷的活化作用"(201513843015Y) 泰州市科技支撑计划(社会发展)项目"农作物秸秆高温堆肥生产有机肥"(TS018) 泰州市科技支撑计划(社会发展)项目(TS201516)
关键词 外生菌根真菌 酸性土壤 Aluminum Ectomycorrhizal fungi Acid soil Phosphorus
  • 引文网络
  • 相关文献

参考文献8

二级参考文献85

共引文献141

;
使用帮助 返回顶部