Nitrogen (N) deposition and precipitation changes can strongly influence soil microbial properties in arid and semiarid regions. Here, we examined these effects on soil samples from the Inner Mongolia desert steppe of northern China after 7 yr of consecutive simulated N deposition by adding NH4NO3 and manipulation of precipitation, using a dilution plate method, PCR analysis, and 18S rRNA sequencing. The experimental treatments were as follows: control (CK), N addition ( N), N and water addition ( N W), and N addition plus water reduction ( N-W). In this study, 14 genera and 32 fungal species were isolated, and Penicillium was determined to be the dominant fungal group. Treatment N-W significantly increased (by 94.8%) the number of cultivable fungi as compared with CK. Compared with the CK community, fungal communities exposed to the three treatments, especially N W and N-W, showed shifts in the relative abundances of cultivable fungi. Treatment N-W significantly enhanced species richness compared with N at the 0–2 cm soil depth. However, N addition and manipulation of precipitation did not influence species richness, the Shannon–Weiner index, or evenness at the 0–30 cm soil depth. This study can provide insight into how fungal composition and diversity respond to climate change scenarios.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.