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氮素是植物需求量最大的元素,丛枝菌根真菌与植物形成共生体后能从土壤中获取无机氮、简单的氨基酸,还能利用一些复杂的有机态氮。考虑到NH+4在土壤中的移动性低及丛枝菌根真菌的专性共生菌的特点,丛枝菌根真菌吸收NH+4对植物的贡献较大。近年来的研究发现丛枝菌根真菌内存在与氮素代谢有关的鸟氨酸循环,而精氨酸则是菌丝内氮素转移的主要形式。综述最近的AMF对氮素的吸收、转运、同化、交换等方面的文献,旨在揭示丛枝菌根真菌氮素利用特点,阐明丛枝菌根真菌在氮循环系统中的重要作用。
Nitrogen is the most important element of plants. After arbuscular mycorrhizal fungi and plant form symbionts, inorganic nitrogen and simple amino acids can be obtained from the soil, and some complex organic nitrogen can also be used. Considering the low mobility of NH + 4 in soil and the obligate symbionts of arbuscular mycorrhizal fungi, the contribution of NH + 4 to AM fungi by AM fungi is larger. Recent studies have found that arbuscular mycorrhizal fungi exist in ornithine metabolism and nitrogen cycle, arginine is the main form of nitrogen transfer within the mycelium. A review of the recent AMF on nitrogen absorption, transport, assimilation, exchange and other aspects of the literature to reveal the characteristics of arbuscular mycorrhizal fungal nitrogen utilization, elucidate the important role of arbuscular mycorrhizal fungi in the nitrogen cycle system.