The relative contribution of nitrifiers to autotrophic nitrification across a pH-gradient in a vegetable cropped soil

Microbial nitrification plays an important role in nitrogen cycling in ecosystems. Nitrification is performed by ammonia-oxidizing archaea (AOA), ammonia-oxidizing bacteria (AOB), and nitrite-oxidizing bacteria (NOB) including complete ammonia oxidizers. However, the relative importance of nitrifiers in autotrophic nitrification in relation to soil pH is still unclear. Combining DNA-based stable isotope probing (SIP) and molecular biological...