Abstract
Heavy metals (HMs) and total petroleum hydrocarbons (TPHs) in soils can be detrimental to both soil microorganisms and public health. However, the effects of HMs and TPHs on microbes as well as the consequent microbial-derived health risk remains unclear in soils by local roads where citizens are clearly accessible to traffic-derived pollutants. Herein, we sampled 84 roadside soils throughout Shanghai. We measured the levels of soil edaphic factors, 6 HMs, and alkane TPHs. We further focused on the responses of bacterial and fungal communities assessed via sequencing and network analysis. Results showed that all soil HMs exceeded background levels of Shanghai soil, while the levels of TPHs are comparable to unpolluted sites. Bacterial network nodes and links decreased sharply under HM stress whereas that of fungal networks remained unchanged. The differential pattern was attributed to the asynchronous response of key classes that fungal key classes were more resistant to HMs than bacteria. In addition, 66.8 % of fungal genera associated with immune-mediated disease increased with increased HM stress for its HM tolerance. Together our findings indicate that despite the relatively stable fungal community in response to environmental stresses, the elevation of harmful fungi likely pose threats to health of urban dwellers.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
