Soil quality shapes the composition of microbial community stress response and core cell metabolism functional genes

2020 
Abstract The capacity for soils to perform vital functions, such as agricultural production, is dependent on numerous properties. Their simultaneous effect on soil biota is of interest to assess impacts of agricultural management. Using a soil quality index (SQI) based on a priori assumptions of eight soil physico-chemical properties that promote plant growth and microbial biomass, we sought to: 1) investigate the effect of land use on SQI; and 2) test a relationship between SQI and the composition of microbial functional genes. In 29 soils under four distinct land uses (cotton, wheat, pasture and native vegetation) gene composition was most distinct in cotton. The SQI followed the gradient cotton
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