Pedosphere 34(2): 411--423, 2024
ISSN 1002-0160/CN 32-1315/P
©2024 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Effects of interactions between arbuscular mycorrhizal fungi and bacteria on the growth of Lotus corniculatus L.: From the perspective of regulating rhizosphere fungal community |
Qing ZHANG1,2,3, Jin CHEN1,2,3, Yingyue LI1,2,3, Tao HUANG1,2,3, Kailing XIE1,2,3, Jing ZHOU1,2,3, Xiaoyu LI1,2,3, |
1 Schools of Life Sciences, Anhui Agricultural University, Hefei 230036 (China);
2 National Engineering Laboratory of Crop Stress Resistance Breeding, Anhui Agricultural University, Hefei 230036 (China);
3 Anhui Province Key Laboratory of Crop Biology, Anhui Agricultural University, Hefei 230036 (China) |
| ABSTRACT |
| Arbuscular mycorrhizal fungi (AMF) provide essential nutrients to crops and are affected by fertilizers. Phosphate-solubilizing bacteria (PSB), nitrogen-fixing bacteria (NFB), and AMF have mutually beneficial relationships with plants, but the effects of their interactions on plant growth by regulating rhizosphere fungal community have not been sufficiently studied. In this study, a greenhouse pot experiment was conducted to investigate the interactions between AMF and bacteria (PSB and NFB) on the growth of Lotus corniculatus L. Specifically, the role of rhizosphere fungal community in the growth of Lotus corniculatus L. was explored using Illumina MiSeq high-throughput sequencing. The results showed that combined inoculation of AMF with PSB and NFB increased plant biomass, plant height, and fungal colonization rate. The richness, complexity, and stability of rhizosphere fungal community also increased after combined inoculation of AMF with PSB and/or NFB, particularly with PSB. In addition, combined inoculation of AMF with PSB and NFB enriched the abundance of beneficial microorganisms, with Chaetomium and Humicola showing the greatest alterations. The structural equation model showed that the interactions of AMF with PSB and NFB promoted plant growth by affecting fungal network structure and soil enzyme activities involved in carbon, nitrogen, and phosphorus cycling. These findings provide evidence for the effects of interactions of AMF with PSB and NFB on rhizosphere fungal community and plant growth. |
| Key Words: colonization intensity,colonization rate,combined inoculation,enzyme activity,network structure,nitrogen-fixing bacteria,phosphatesolubilizing bacteria |
| Citation: Zhang Q, Chen J, Li Y Y, Huang T, Xie K L, Zhou J, Li X Y. 2024. Effects of interactions between arbuscular mycorrhizal fungi and bacteria on the growth of Lotus corniculatus L.: From the perspective of regulating rhizosphere fungal community. Pedosphere. 34(2): 411-423. |
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