Chen Guixian, Wu Chuanfa, Wang Fang, Lyu Haohao, Lu Yuwen, Yan Chengqi, Chen Jianping, Deng Yangwu, Ge Tida
School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000 Jiangxi Province China.
State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Plant Virology, Ningbo University, Ningbo, 315211 China.
3 Biotech. 2022 May;12(5):106. doi: 10.1007/s13205-022-03167-6. Epub 2022 Apr 7.
Soil microbial communities are critical to plant health and productivity. Crop-associated microbial diversity may exhibit spatial specificity across regions and soil compartments. However, we lack sound evidence for the impact of variation in soil microbial diversity on plant productivity caused by regional differences. The main aims of this study are to explore the structure and functionality of the belowground (potato tuber surface and rhizosphere) microbial communities in three compartments and assess whether these communities contribute to potato productivity. Significant differences in alpha and beta diversities of belowground microbiota were detected in different compartments and regions, mainly due to differences in available soil nutrients and pH. Changes to microbial diversity between bulk soil and rhizosphere or tuber surface soil were significantly negatively correlated with potato yield and nutrient content and positively correlated with starch content. We further found some bacterial (, , and ) and fungal (, , and ) genera closely associated with potato yield and quality. Aggregated boosted tree prediction revealed that soil physicochemical properties and microbial diversity of tuber surface soil contributed more to potato yield; tuber surface soil bacterial contributed more to potato starch and nutrient content. Our findings provide experimental evidence that the significant differences in soil microbial diversity and specific microbial taxa enrichment may potentially influence crop productivity under soil physicochemical property change scenarios in the agricultural ecosystem.
The online version contains supplementary material available at 10.1007/s13205-022-03167-6.
土壤微生物群落对植物健康和生产力至关重要。与作物相关的微生物多样性可能在不同区域和土壤组分间表现出空间特异性。然而，我们缺乏确凿证据证明区域差异导致的土壤微生物多样性变化对植物生产力的影响。本研究的主要目的是探索三个组分中地下（马铃薯块茎表面和根际）微生物群落的结构和功能，并评估这些群落是否对马铃薯生产力有贡献。在不同组分和区域检测到地下微生物群的α和β多样性存在显著差异，主要归因于有效土壤养分和pH值的差异。大块土壤与根际或块茎表面土壤之间微生物多样性的变化与马铃薯产量和养分含量显著负相关，与淀粉含量正相关。我们进一步发现了一些与马铃薯产量和品质密切相关的细菌（、和）和真菌（、和）属。聚合增强树预测表明，块茎表面土壤的土壤理化性质和微生物多样性对马铃薯产量贡献更大；块茎表面土壤细菌对马铃薯淀粉和养分含量贡献更大。我们的研究结果提供了实验证据，表明在农业生态系统中土壤理化性质变化的情况下，土壤微生物多样性的显著差异和特定微生物类群的富集可能会潜在地影响作物生产力。
在线版本包含可在10.1007/s13205-022-03167-6获取的补充材料。
