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| Open AccessBacteria increase arid-land soil surface temperature through the production of sunscreens
Soil surface temperature, which affects many biogeochemical processes, depends on soil albedo. Here, Couradeau et al.show that some cyanobacteria can increase the temperature of arid-land soil surface by as much as 10 °C through the accumulation of a sunscreen metabolite.
- Estelle Couradeau
- , Ulas Karaoz
- & Ferran Garcia-Pichel
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Article
| Open AccessThe effect of soil-borne pathogens depends on the abundance of host tree species
Fitness advantages conferred on species living at low density is thought to be one mechanism by which stable biodiversity is maintained. Here, Liu et al. show that recruitment of seedlings in high-density populations of a subtropical tree is suppressed by soil pathogens, with little effect at low-density.
- Yu Liu
- , Suqin Fang
- & Fangliang He
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Review Article
| Open AccessExtinction risk of soil biota
Belowground soil biota play key roles in maintaining proper ecosystem functioning, but studies on their extinction ecology are sparse. Here, Veresoglou et al. review the risks to soil biota posed by global change, and highlight the technical challenges involved in identifying extinction events.
- Stavros D. Veresoglou
- , John M. Halley
- & Matthias C. Rillig
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Article
| Open AccessExometabolite niche partitioning among sympatric soil bacteria
Production and consumption of metabolites by soil microorganisms are important for nutrient cycling and maintenance of microbial diversity. Here, Baran et al. study metabolite uptake and release by desert soil microorganisms, showing that coexisting microbes can have divergent substrate preferences.
- Richard Baran
- , Eoin L. Brodie
- & Trent R. Northen
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A novel pathway producing dimethylsulphide in bacteria is widespread in soil environments
Dimethylsulphide (DMS) is a volatile compound produced by marine microbes through degradation of dimethylsulphoniopropionate (DMSP). Here, Carrión et al.describe an alternative pathway for DMS production from methanethiol that is widespread among bacteria, especially from soil environments.
- O. Carrión
- , A. R. J. Curson
- & J. D. Todd
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Turnover of soil bacterial diversity driven by wide-scale environmental heterogeneity
In microbial biogeography, little is known about processes involved in soil bacterial diversity turnover. By conducting a wide-scale investigation, this study shows that dispersal limitation and environmental selection of bacteria are not mutually exclusive, highlighting the importance of landscape diversity.
- L. Ranjard
- , S. Dequiedt
- & P. Lemanceau
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Warming and nitrogen deposition lessen microbial residue contribution to soil carbon pool
Microbes appear to play an important role in carbon sequestration. Here, the composition of microbial residues in a California grassland with elevated carbon dioxide, warming and nitrogen deposition reveals that warming and nitrogen deposition can both alter the fraction of carbon derived from microbes in soils.
- Chao Liang
- & Teri C. Balser