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天然混合微生物接种剂(M1H)可优化土壤健康以促进生长:土壤真菌比细菌更敏感。

Native mixed microbe inoculants (M1H) optimize soil health to promote growth: the soil fungi are more sensitive than bacteria.

作者信息

Liu Zexun, Luo Chengcheng, Zheng Kang, Sun Yongtao, Ru Jie, Ma Yaner, Zhang Xinru, Zhou Yong, Zhuang Jiayao

机构信息

Collaborative Innovation Center of Sustainable Forestry in Southern China of Jiangsu Province, Nanjing Forestry University, Nanjing, China.

East China Academy of Inventory and Planning of NFGA, Hangzhou, China.

出版信息

Front Microbiol. 2025 Mar 5;16:1521064. doi: 10.3389/fmicb.2025.1521064. eCollection 2025.

Abstract

Microbial inoculant is widely used in plant growth and crop production. However, the effect of native mixed microbial inoculants on soil microbiota and plant growth remain to be elucidated. Here, we used pot experiment for 5 months to determine the microbial inoculants treatments with growth-promoting effect on , such as M1P () treatment and M1H treatment: the mixture of M1P and M45N (), and investigate the effect of these inoculants on the capacity of soil nutrients and rhizosphere microbiomes in promoting growth. Further, the adaptability of these strains to environmental stress (temperature and pH) was determined by using stress-resistant growth experiment. The results showed that M1H treatment resulted in soil nutrients consumption and led to substantial alterations in the microbial community that were more effective in promoting growth. The enhanced plant growth observed with M1H inoculation may be due to its impact on the soil micro-environment, particularly through increasing beneficial genera (e.g., , , , and ) and decreasing potential genera (e.g., and ). In addition, at the genus level (top 10), the effect of M1H inoculation on soil fungal community was higher than that of bacteria, which shows that the change of soil fungal community after M1H inoculation was more sensitive than that of bacteria. Spearman correlation analysis further revealed that the abundance of , , , and were the key factors affecting growth. Moreover, FUNGuild function prediction clearly indicated distinct differences in the fungal functions of CK, MIP and M1H treatment, in which a lower relative abundance of saprotroph fungi in M1H treatment compared to CK, these results may confirmed the possibility of decreasing the abundance of and under M1H treatment. Taken together, our findings highlight the role of M1H inoculant in promoting growth and ameliorating soil health, and providing valuable insight of using native mixed microbial inoculants to cultivate and optimize soil micro-environment.

摘要

微生物接种剂在植物生长和作物生产中被广泛应用。然而,本地混合微生物接种剂对土壤微生物群和植物生长的影响仍有待阐明。在此,我们进行了为期5个月的盆栽试验,以确定对[植物名称]具有促生长作用的微生物接种剂处理,如M1P([具体成分1])处理和M1H处理:M1P和M45N([具体成分2])的混合物,并研究这些接种剂对土壤养分容量和根际微生物群落促进[植物名称]生长的影响。此外,通过抗逆生长实验确定了这些菌株对环境胁迫(温度和pH)的适应性。结果表明,M1H处理导致土壤养分消耗,并导致微生物群落发生显著变化,对促进[植物名称]生长更有效。观察到M1H接种促进植物生长可能是由于其对土壤微环境的影响,特别是通过增加有益属(如[有益属1]、[有益属2]、[有益属3]和[有益属4])和减少潜在属(如[潜在属1]和[潜在属2])。此外,在属水平(前10)上,M1H接种对土壤真菌群落的影响高于细菌,这表明M1H接种后土壤真菌群落的变化比细菌更敏感。Spearman相关性分析进一步表明,[属1]、[属2]、[属3]、[属4]和[属5]的丰度是影响[植物名称]生长的关键因素。此外,FUNGuild功能预测清楚地表明,对照(CK)、MIP和M1H处理的真菌功能存在明显差异,其中M1H处理中腐生真菌的相对丰度低于CK,这些结果可能证实了在M1H处理下降低[属1]和[属2]丰度的可能性。综上所述,我们的研究结果突出了M1H接种剂在促进[植物名称]生长和改善土壤健康方面的作用,并为利用本地混合微生物接种剂培育[植物名称]和优化土壤微环境提供了有价值的见解。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5870/11919897/38de93705bd6/fmicb-16-1521064-g001.jpg

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