Chin J Plant Ecol ›› 2023, Vol. 47 ›› Issue (预发表): 0-0.DOI: 10.17521/cjpe.2022.0373

   

Insight into the recent studies on diversity of arbuscular mycorrhizal fungi in shaping plant community assembly and maintaining rare species

Jia-Rong YANG1,Dai Dong1,Junfang Chen1,Juan Liu2,Xian Wu1,Xiaolin Liu1,Yu Liu1   

  1. 1. East China Normal University
    2. Agroforestry Center of Baifu Town, Chengwu
  • Received:2022-09-14 Revised:2022-10-21 Online:2023-01-20 Published:2022-10-25
  • Contact: Yu Liu

Abstract: Background & Aim: Arbuscular mycorrhiza (AM) is one of the oldest symbionts between plants and soil microorganisms, and about 80% terrestrial plant species can associate with AM fungi on Earth. Because of the stable climate and poor soil phosphorus in tropical and subtropical forests, this mutualistic symbiosis is much more common there. Previous studies have extensively investigated the diversity of AM fungi in tropical and subtropical forests, and have shown that AM fungi can promote plant recruitment and growth. However, this positive effect of AM on plants (i.e., the positive plant-soil feedback) can weaken the contribution of the negative plant-soil feedback (caused by soil-borne pathogens) to maintaining tree species diversity, which appears to contradict with the surprisingly high tree diversity and high proportion of rare tree species in tropical and subtropical forests. Recently, a mounting number of empirical studies have found that the diversity of AM fungi varies significantly in different habitats and AM colonization depends on the identity of host species, thereby affecting the fitness of plants and further shaping the plant community structure. Progresses & Prospects: Through synthesizing the current research about the diversity of AM fungi in promoting plant coexistence and maintaining community diversity, we expect to put forward a promising study direction for testing the "rare species advantage" hypothesis, therefore improving conservation of rare plant species.

Key words: arbuscular mycorrhizal fungi, biodiversity, species abundance pattern, rare species advantage, species coexistence