Chin J Plant Ecol ›› 2022, Vol. 46 ›› Issue (5): 516-528.DOI: 10.17521/cjpe.2021.0364

Special Issue: 菌根真菌

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Advance on the association between mycorrhizal fungi and Orchidaceae in nitrogen nutrition

SHAN Ting-Ting, CHEN Tong-Yao, CHEN Xiao-Mei(), GUO Shun-Xing(), WANG Ai-Rong   

  1. Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China
  • Received:2021-10-12 Accepted:2021-12-15 Online:2022-05-20 Published:2022-06-09
  • Contact: CHEN Xiao-Mei,GUO Shun-Xing
  • Supported by:
    National Natural Science Foundation of China(81973427)

Abstract:

Orchid is typical of mycorrhizal plants. Orchid mycorrhiza (OM), the symbiotic association between orchid roots and fungi, is unique to orchids. The nutrient sources of orchid mycorrhizal fungi (OMF) affect the lifestyle and nutrient levels of its host plants. Nitrogen (N) is the main limiting factor of plant growth. Orchids generally have higher tissue N levels compared to neighbor autotrophic plants, meaning N enrichment of plants. This paper reviewed the types and taxa of OMF, N nutrition characteristics of orchids, and N transfer mechanism in OM to provide a reference for the research on protection, regeneration, and sustainable utilization of orchid resources.

Key words: Orchidaceae, mycoheterotrophy, saprotrophic fungi, ectomycorrhizal fungi, isotope analysis