School of Geographical Sciences, Lingnan Normal University, Zhanjiang, Guangdong, 524048, China.
Agricultural College, Northeast Agricultural University, Harbin, Heilongjiang, 150030, China.
Fungal Biol. 2022 Sep;126(9):609-619. doi: 10.1016/j.funbio.2022.07.007. Epub 2022 Aug 1.
Fusarium oxysporum and Fusarium solani are the main soybean root rot pathogens in northern China. We investigated the distribution and driving factors of Fusarium under different cropping systems to evaluate and regulate soil health. The factors affecting Fusarium in soybean cropping systems were assessed using high-throughput sequencing of ITS1 to identify soil microbial population diversity, and then the soil physicochemical properties were assessed to determine the levels of various elements present in the environment. According to the results, the abundance of Fusarium was obviously reduced in the corn-soybean rotation and uncultivated soil systems. The relative abundance of Fusarium in the soil and the abundance and diversity of fungal communities were significantly positively associated with the abundance of Ascomycota. Additionally, the relative abundance of Fusarium was significantly positively correlated with the zinc (Zn) content. When the Zn content was high, the abundance of Fusarium increased, and the correlations with Chaetomium, Cryptococcus, Penicillium and Trichoderma significantly decreased. Soybean yield was significantly negatively correlated with fungal community abundance and diversity. Based on our results, the uncultivated soil and corn-soybean rotation cropping systems improved the organizational structure of the soil fungal community and were conducive to the health and production of soybean.
尖孢镰刀菌和茄病镰刀菌是中国北方大豆根腐病的主要病原菌。我们调查了不同种植制度下镰刀菌的分布和驱动因素,以评估和调节土壤健康。使用 ITS1 的高通量测序来评估影响大豆种植系统中镰刀菌的因素,以确定土壤微生物种群多样性,然后评估土壤理化性质,以确定环境中存在的各种元素水平。结果表明,玉米-大豆轮作和未开垦土壤系统中镰刀菌的丰度明显降低。土壤中镰刀菌的相对丰度以及真菌群落的丰度和多样性与子囊菌的丰度呈显著正相关。此外,镰刀菌的相对丰度与锌(Zn)含量呈显著正相关。当 Zn 含量较高时,镰刀菌的丰度增加,与毛壳菌属、假丝酵母属、青霉属和木霉属的相关性显著降低。大豆产量与真菌群落丰度和多样性呈显著负相关。根据我们的结果,未开垦土壤和玉米-大豆轮作种植制度改善了土壤真菌群落的组织结构,有利于大豆的健康和生产。