Rhizosphere Soil Bacterial Communities of Continuous Cropping-Tolerant and Sensitive Soybean Genotypes Respond Differently to Long-Term Continuous Cropping in Mollisols

• DOI: 10.3389/fmicb.2021.729047
• Publication Date: 2021-09-13T05:39:20Z
• Authors: Ming Yuan; Taobing Yu; Qihan Shi; Dongwei Han; Kanchao Yu; Lianxia Wang; Shurong Wang; Hao Xiang; Ronghui Wen; Hai Nian; Tengxiang Lian
• Keywords: Crop Rotation; Soybean cyst nematode; Cropping system; Heterodera; Mollisol

The continuous planting of soybeans leads to soil acidification, aggravation soil-borne diseases, reduction in enzyme activity, and accumulation toxins the soil. Microorganisms rhizosphere play a very important role maintaining sustainability ecosystem plant health. In this study, two soybean genotypes, one bred for cropping other not, were grown Mollisol northeast China under 7 36years comparison with soybean–maize rotation, microbial communities composition assessed using high-throughput sequencing technology. results showed that short- or long-term had no significant effect on bacterial alpha diversity. Short-term increased number cyst nematode ( Heterodera glycines ), while reduced these numbers. There less nematodes tolerant genotypes than sensitive genotypes. addition, significantly potential beneficial populations, such as Pseudoxanthomonas , Nitrospira Streptomyces compared rotation short-term cropping, suggesting shifts community toward healthy crop system. Soybean are might recruit some microorganisms enhance resistance cropping. Moreover, network responded differently genotype positively genotype, topology analyses instability suggested short periods can have detrimental stability, although could be alleviated increasing planting.