Regulatory effects of ectomycorrhizal fungi on the morphological construction of Pinus sylvestris var. mongolica seedlings under exogenous nitrogen input
Bibliographic Data
| ID | 19586111 |
|---|---|
| Authors | Suna Yun (Inner Mongolia Agricultural University), Longfei Hao (Inner Mongolia Agricultural University, corresponding author), Yongjie Yue (0000-0003-2953-5140, Inner Mongolia Agricultural University), Tingyan Liu (0000-0001-9188-3694, Inner Mongolia Agricultural University), W Sun (0000-0003-0649-5086, Inner Mongolia Agricultural University), Wanghuai Shi (Inner Mongolia Agricultural University), Zhuang Liu (0000-0002-1629-1039, Inner Mongolia Agricultural University), Zhuyao Liu, Jiasheng Yu (0009-0003-7414-5624), Jihua Yu (0000-0001-5849-7636, Inner Mongolia Agricultural University), Yongning Hu (State Forestry and Grassland Administration, corresponding author) |
| Year | 2026 |
| Volume | 23 |
| Pages | 101120 |
| Publication date | 2026-01-01 |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Trees Forests and People (JOURNAL) |
| Journal identifiers | ISSN: 2666-7193 • E-ISSN: 2666-7193 |
| Publisher | Elsevier BV (PUBLISHER) |
| DOI | 10.1016/j.tfp.2025.101120 |
| OpenAlex | W4417178275 |
| Language | EN |
| References cited | 49 |
This study investigated how ectomycorrhizal (ECM) fungal inoculation affects the rhizosphere microenvironment and growth of Pinus sylvestris var . mongolica seedlings under different nitrogen (N) addition levels. Results showed microbial diversity and biomass exhibited threshold responses to N. Under ECMF inoculation, low N (LN) increased bacterial diversity (Chao1 index +13.40 %) and microbial biomass phosphorus (+139.20 %), whereas high N (HN) only marginally increased diversity and decreased microbial biomass carbon (-41.4 %). LN inoculation also increased total soil C and P, alleviated microbial C limitation, and promoted seedling morphology (e.g., specific root length +58.97 %, seedling height +58.58 %). In contrast, HN inhibited root development and exacerbated the effects of N limitation. Without inoculation, HN resulted in higher bacterial diversity and soil nutrient content than did LN. Path analysis identified N addition and inoculation as key positive drivers of aboveground growth, with root morphology showing negative feedback. In conclusion, ECMF inoculation benefits seedling growth by enhancing microbial diversity and P availability under low N conditions, but high N causes C N imbalance and suppresses mycorrhizal benefits, providing theoretical support for mycorrhizal application in semi-arid areas under N deposition. Consequently, based on an identified threshold of ≈6 g·m−2·a−1 for N addition, we recommend ECMF inoculation only under low-N conditions to ensure seedling morphological formation. This practice should be avoided under high-N conditions to prevent the loss of symbiotic benefits and a decline in ecological adaptability
Ectosymbiosis · Nitrogen · Pinus · Scots pine · Woody plant · Mycorrhizal Fungi and Plant Interactions · Plant nutrient uptake and metabolism · Soil Carbon and Nitrogen Dynamics
| Highly cited | No |
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