Gong Xin, Zhang Ziyun, Wang Hui, Li Huixin, Hu Feng, Liu Manqiang, Jiang Lin, Chen Xiaoyun, Ma Chao
Soil Ecology Lab, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China.
Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-Restoration, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China.
Microorganisms. 2022 Mar 16;10(3):630. doi: 10.3390/microorganisms10030630.
Inoculum size contributes to the invasion potential of pathogens in the soil. However, the role of inoculum size in determining the fate of pathogens in disturbed soils remains unclear. Herein, we investigated the survival rates of a bacterial pathogen, , in soils subjected to heat as a simulated disturbance. Our results revealed that heating increased soil resource availability but reduced resource differentiation between and indigenous bacterial communities. In both non-heated and heated soils, invader abundances increased with inoculum size, with a greater magnitude in heated soils. Inoculum size and heat-induced increases in soil-available carbon and nitrogen best predicted invasion success. Altogether, our findings suggested that the invasion by soil pathogens could be predicted by synergies between heat perturbation and inoculum size.
接种量有助于病原体在土壤中的入侵潜力。然而，接种量在决定受干扰土壤中病原体命运方面的作用仍不清楚。在此，我们研究了一种细菌病原体在经受加热作为模拟干扰的土壤中的存活率。我们的结果表明，加热增加了土壤资源可用性，但减少了入侵病原体与本地细菌群落之间的资源差异。在未加热和加热的土壤中，入侵者丰度均随接种量增加，在加热土壤中增幅更大。接种量以及加热引起的土壤有效碳和氮的增加最能预测入侵成功。总之，我们的研究结果表明，土壤病原体的入侵可以通过热扰动和接种量之间的协同作用来预测。
