Stability of ammonia oxidizer communities upon nitrogen fertilizer pulse disturbances is dependent on diversity

TY - JOUR

T1 - Stability of ammonia oxidizer communities upon nitrogen fertilizer pulse disturbances is dependent on diversity

AU - Mitsuta, Akari

AU - Ishige, Nao

AU - Tatsumi, Chikae

AU - Musavi Madegwa, Yvonne

AU - Eurya Kuramae, Eiko

AU - Uchida, Yoshitaka

N1 - Data archiving: on request

PY - 2023/11

Y1 - 2023/11

N2 - Diversity of the soil microbial community is an important factor affecting its stability against disturbance. However, the impact of the decline in soil microbial diversity on the stability of ammonia-oxidizing bacteria (AOB) and ammonia-oxidizing archaea (AOA) is not known, particularly considering the repeated soil nutrient disturbances occurring in modern agricultural systems. Here, we conducted a microcosm experiment and modified the soil microbial diversity using the dilution-to-extinction approach to determine the stability and population dynamics of AOB and AOA communities with repeated nitrogen (N) fertilizer application. Our results demonstrated that the AOB community became more abundant and stable against repeated disturbances by N in the treatments with the highest microbial diversity. In contrast, the abundance of AOA decreased following repeated N fertilizer application, regardless of the microbial diversity. Notably, during the initial application phase, AOA displayed a potential for increased abundance in treatments with high soil microbial diversity. These findings highlight that the soil microbial diversity controls the stability of ammonia oxidizers during short-interval repeated N disturbances.

AB - Diversity of the soil microbial community is an important factor affecting its stability against disturbance. However, the impact of the decline in soil microbial diversity on the stability of ammonia-oxidizing bacteria (AOB) and ammonia-oxidizing archaea (AOA) is not known, particularly considering the repeated soil nutrient disturbances occurring in modern agricultural systems. Here, we conducted a microcosm experiment and modified the soil microbial diversity using the dilution-to-extinction approach to determine the stability and population dynamics of AOB and AOA communities with repeated nitrogen (N) fertilizer application. Our results demonstrated that the AOB community became more abundant and stable against repeated disturbances by N in the treatments with the highest microbial diversity. In contrast, the abundance of AOA decreased following repeated N fertilizer application, regardless of the microbial diversity. Notably, during the initial application phase, AOA displayed a potential for increased abundance in treatments with high soil microbial diversity. These findings highlight that the soil microbial diversity controls the stability of ammonia oxidizers during short-interval repeated N disturbances.

KW - Ammonia fertilizer

KW - Ammonia-oxidizing archaea

KW - Ammonia-oxidizing bacteria

KW - Microbial community stability

KW - Repeated disturbance

KW - Soil microbial diversity

U2 - 10.1016/j.geoderma.2023.116685

DO - 10.1016/j.geoderma.2023.116685

M3 - Article

AN - SCOPUS:85174685327

SN - 0016-7061

VL - 439

JO - Geoderma

JF - Geoderma

M1 - 116685

ER -