Arbuscular Mycorrhizal Fungi Play More Important Roles in Saline–Sodic Soil than in Black Soil of the Paddy Field in Northeast China

作者：Dongxue Jiang, Yuxin Yan, Jiaqi Li, Chenyu Zhang, Shaoqi Huangfu, Yang Sun, Chunyu Sun, Lihua Huang, Lei Tian · 发表于：Agriculture · 年份：2025 · DOI：10.3390/agriculture15090951 · 被引用次数：4 · 研究领域：Mycorrhizal Fungi and Plant Interactions、Soil Carbon and Nitrogen Dynamics、Fungal Biology and Applications

Rice serves as the staple food for half of the world’s population. Given the expanding global population, the urgency to allocate land for rice cultivation is paramount. In Northeast China, saline–sodic and black soils represent two distinct soil types used in rice production. During rice growth, soil microorganisms, including arbuscular mycorrhizal fungi (AMF), play pivotal roles in nutrient uptake and resistance to biotic and abiotic stressors. While numerous studies have elucidated the role of AMF in enhancing rice growth and its adaptation to stress, the differences in AMF communities within paddy fields between different soil types have been largely overlooked. In this study, high-throughput sequencing technology was employed to analyze the diversity and community structure of AMF, and metagenomic sequencing was employed to analyze AMF functional gene differences between the two soil types (black and saline–sodic soils). At the same time, the commonalities and differences of the soil characteristics (nitrogen, phosphorus, potassium, pH, etc.) were verified in influencing AMF communities. The results indicated that Glomus was the predominant genus in both soil types, followed by Paraglomus. The overall abundance of AMF was higher at the heading stage than at the harvest stage, with Paraglomus showing greater adaptation to the saline–sodic soil environment. Total phosphorus (TP) was identified as the primary factor influencing AMF diversity at the heading stage. In the har...