Landeweert R, Hoffland E, Finlay R D., Kuyper T W., van Breemen N
Trends Ecol Evol. 2001 May 1;16(5):248-254. doi: 10.1016/s0169-5347(01)02122-x.
Plant nutrients, with the exception of nitrogen, are ultimately derived from weathering of primary minerals. Traditional theories about the role of ectomycorrhizal fungi in plant nutrition have emphasized quantitative effects on uptake and transport of dissolved nutrients. Qualitative effects of the symbiosis on the ability of plants to access organic nitrogen and phosphorus sources have also become increasingly apparent. Recent research suggests that ectomycorrhizal fungi mobilize other essential plant nutrients directly from minerals through excretion of organic acids. This enables ectomycorrhizal plants to utilize essential nutrients from insoluble mineral sources and affects nutrient cycling in forest systems.
除氮之外，植物养分最终都来自原生矿物的风化作用。关于外生菌根真菌在植物营养中作用的传统理论，一直强调其对溶解态养分吸收和运输的定量影响。这种共生关系对植物获取有机氮和磷源能力的定性影响也日益明显。最近的研究表明，外生菌根真菌通过分泌有机酸直接从矿物中调动其他必需的植物养分。这使外生菌根植物能够利用不溶性矿物源中的必需养分，并影响森林系统中的养分循环。
