The possibility of using the elemental compositions of species as a tool to identify species/genotype niche remains to be tested at a global scale. We investigated relationships between the foliar elemental compositions (elementomes) of trees at a global scale with phylogeny, climate, N deposition and soil traits. We analysed foliar N, P, K, Ca, Mg and S concentrations in 23,962 trees of 227 species. Shared ancestry explained 60-94% of the total variance in foliar nutrient concentrations and ratios whereas current climate, atmospheric N deposition and soil type together explained 1-7%, consistent with the biogeochemical niche hypothesis which predicts that each species will have a specific need for and use of each bio-element. The remaining variance was explained by the avoidance of nutritional competition with other species and natural variability within species. The biogeochemical niche hypothesis is thus able to quantify species-specific tree niches and their shifts in response to environmental changes.
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http://dx.doi.org/10.1038/s41559-020-01348-1 | DOI Listing |
Appl Environ Microbiol
January 2025
Department of Biological Sciences, Clemson University, Clemson, South Carolina, USA.
Unlabelled: The abundant and metabolically versatile aquatic bacterial order, , influences marine biogeochemical cycles. We assessed metagenome-assembled genome (MAG) abundance, estimated growth rates, and potential and expressed functions in the Chesapeake and Delaware Bays, two important US estuaries. Phylogenomics of draft and draft/closed genomes from this study and others placed 46 nearly complete MAGs from these bays into 11 genera, many were not well characterized.
View Article and Find Full Text PDFMicroorganisms
December 2024
Key Laboratory of Integrated Rice-Fish Farming Ecology, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China.
In aquatic benthic environments, benthic organisms have been found to regulate important biogeochemical characteristics and perform key ecosystem functions. To further explore the ecological impact of the snail 's, presence on the benthic environment, we employed high-throughput sequencing technology to investigate its effects on the bacterial, fungal, and protist communities in sediment and their intrinsic interactions. Our findings revealed that 's presence significantly enhanced the diversity and evenness of the fungal community while simultaneously decreasing the diversity and richness of the protist community, and it also altered the composition and relative abundance of the dominant phyla across the bacterial, fungal, and protist communities.
View Article and Find Full Text PDFBiology (Basel)
December 2024
Departamento de Ingeniería Genética, Unidad Irapuato, Cinvestav 36824, Mexico.
The ongoing rise in global temperatures poses significant challenges to ecosystems, particularly impacting bacterial communities that are central to biogeochemical cycles. The resilience of wild mesophilic bacteria to temperature increases of 2-4 °C remains poorly understood. In this study, we conducted experimental evolution on six wild strains from two lineages ( and ) to examine their thermal adaptation strategies.
View Article and Find Full Text PDFCell Chem Biol
December 2024
Department of Chemistry, Seattle University, Seattle, WA, USA. Electronic address:
Microbiomes exist in ecological niches ranging from the ocean and soil to inside of larger organisms like plants and animals. Within these niches, microbes play key roles in biochemical processes that impact larger phenomena, such as biogeochemical cycling or health. By understanding of how these processes occur at the molecular level, it may be possible to develop new interventions to address global problems.
View Article and Find Full Text PDFAppl Environ Microbiol
January 2025
State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, China.
Thermodynamics has long been applied in predicting undiscovered microorganisms or analyzing energy flows in microbial metabolism, as well as evaluating microbial impacts on global element distributions. However, further development and refinement in this interdisciplinary field are still needed. This work endeavors to develop a whole-cycle framework integrating thermodynamics with microbiological studies, focusing on representative nitrogen-transforming microorganisms.
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