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Precipitation changes reshape desert soil microbial community assembly and potential functions.
Environ Res
January 2025
Linze Inland River Basin Research Station, Key Laboratory of Ecohydrology of Inland River Basin, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, Gansu, 730000, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
Understanding the responses of desert microbial communities to escalating precipitation changes is a significant knowledge gap in predicting future soil health and ecological function. Through a five-year precipitation manipulation experiment, we investigated the contrasting eco-evolutionary processes of desert bacteria and fungi that manifested in changes to the assembly and potential functions of the soil microbiome. Elevated precipitation increased the alpha diversity and network complexity of bacteria and fungi, proportion of non-dominant phyla, and abundance of carbon- and nitrogen-fixing bacteria and saprophytic, symbiotic, and pathogenic fungi.
View Article and Find Full Text PDFWhole genome sequencing revealed high occurrence of antimicrobial resistance genes in bacteria isolated from poultry manure.
Int J Antimicrob Agents
January 2025
Department of Botany, Institute of Science, Banaras Hindu, University, Varanasi, Uttar Pradesh, 221005, India. Electronic address:
Global demand for food has driven expansion and intensification of livestock production, particularly in developing nations where antibiotic use is often routine. Waste from poultry production, including manure, is commonly utilized as fertilizers in agroecosystems, risking environmental contamination with potentially zoonotic bacteria and antimicrobial resistance genes (ARGs). Here, 33 bacterial isolates were recovered from broiler (n=17) and layer (n=16) chicken manure by aerobic culture using Luria Bertani agar.
View Article and Find Full Text PDFIdentification of intestinal mediators of DBL-1/BMP immune signaling shaping gut microbiome composition.
mBio
January 2025
Department of Integrative Biology, University of California, Berkeley, Berkeley, California, USA.
The composition of the gut microbiome is determined by a complex interplay of diet, host genetics, microbe-microbe interactions, abiotic factors, and stochasticity. Previous studies have demonstrated the importance of host genetics in community assembly of the gut microbiome and identified a central role for DBL-1/BMP immune signaling in determining the abundance of gut . However, the effects of DBL-1 signaling on gut bacteria were found to depend on its activation in extra-intestinal tissues, highlighting a gap in our understanding of the proximal factors that determine microbiome composition.
View Article and Find Full Text PDFAntarctic Geothermal Soils Exhibit an Absence of Regional Habitat Generalist Microorganisms.
Environ Microbiol
January 2025
Thermophile Research Unit, Te Aka Mātuatua, School of Science, Te Whare Wānanga o Waikato, University of Waikato, Hamilton, Aotearoa-New Zealand.
Active geothermal systems are relatively rare in Antarctica and represent metaphorical islands ideal to study microbial dispersal. In this study, we tested the macro-ecological concept that high dispersal rates result in communities being dominated by either habitat generalists or specialists by investigating the microbial communities on four geographically separated geothermal sites on three Antarctic volcanoes (Mts. Erebus, Melbourne, and Rittman).
View Article and Find Full Text PDFEcological filters shape arbuscular mycorrhizal fungal communities in the rhizosphere of secondary vegetation species in a temperate forest.
PLoS One
January 2025
Instituto Tecnológico de Tlajomulco, Tecnológico Nacional de México, Tecnológico Nacional de México, Circuito Metropolitano Sur, Tlajomulco de Zúñiga, Jalisco, Mexico.
The community assembly of arbuscular mycorrhizal fungi (AMF) in the rhizosphere results from the recruitment and selection of different AMF species with different functional traits. The aim of this study was to analyze the relationship between biotic and abiotic factors and the AMF community assembly in the rhizosphere of four secondary vegetation (SV) plant species in a temperate forest. We selected four sites at two altitudes, and we marked five individuals per plant species at each site.
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