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Chinese Agricultural Science Bulletin ›› 2021, Vol. 37 ›› Issue (27): 53-58.doi: 10.11924/j.issn.1000-6850.casb2020-0761

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Effect of Arbuscular Mycorrhizal Fungi on Nitrogen Absorption of Plants: A Review

Gao Wenli(), Zaynur Turxun, Sang Yu, Ma Xiaodong()   

  1. Xinjiang Key Laboratory of Special Species Conservation and Regulatory Biology, Key Laboratory of Plant Stress Biology in Arid Areas, Urumqi 830054
  • Received:2020-12-08 Revised:2021-04-13 Online:2021-09-25 Published:2021-10-28
  • Contact: Ma Xiaodong E-mail:371265555@qq.com;mxd1107@126.com

Abstract:

Nitrogen is an essential element for plant growth and development, and also an important component of many compounds in plants, which is of great significance to plant growth and development. Arbuscular mycorrhizas fungi (AMF) can form a mutually beneficial symbiotic structure with 80% of terrestrial vascular plants. AMF obtain carbon source through host plant, and the existence of extra root hyphae increases the absorption range of nitrogen, which could effectively enhance the nitrogen exchange among soil-AMF-plant, improve the adaptability of plants to external stress, and promote the nitrogen cycle in the ecological system. Therefore, using AMF as transport media to explore the mechanism of nitrogen absorption, transport and metabolism in the whole symbiotic system has become a hot topic in ecology and agricultural production. In this paper, the mechanism of nitrogen absorption and cycle in arbuscular mycorrhizal symbionts was systematically reviewed from three aspects: nitrogen metabolism, nitrogen absorption forms and nitrogen transport and exchange by symbionts. The authors revealed the characteristics of nitrogen utilization in arbuscular mycorrhizal symbionts and its important role in nitrogen cycle, and put forward some scientific problems on nitrogen cycle in arbuscular mycorrhizal symbionts needed to be further studied.

Key words: arbuscular mycorrhizal fungi, nitrogen, mycorrhizal symbiosis, arbuscular mycorrhizal network, nitrogen deposition

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