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Prolonging survival in good health is a fundamental societal goal. However, the leading determinants of disability-free survival in healthy older people have not been well established. Data from ASPREE, a bi-national placebo-controlled trial of aspirin with 4.7 years median follow-up, was analysed. At enrolment, participants were healthy and without prior cardiovascular events, dementia or persistent physical disability. Disab...
A tipping point in carbon storage when forest expands into tundra is related to mycorrhizal recycling of nitrogenNARA Subscribed
Tundra ecosystems are global belowground sinks for atmospheric CO 2 . Ongoing warming‐induced encroachment by shrubs and trees risks turning this sink into a CO 2 source, resulting in a positive feedback on climate warming. To advance mechanistic understanding of how shifts in mycorrhizal types affect long‐term carbon (C) and nitrogen (N) stocks, we studied small‐scale soil depth profiles of fungal communities and C–N dynamics...
Summary Plant roots select non‐random communities of fungi and bacteria from the surrounding soil that have effects on their health and growth, but we know little about the factors influencing their composition. We profiled bacterial microbiomes associated with individual ectomycorrhizal Pinus sylvestris roots colonized by different fungi and analyzed differences in microbiome structure related to soils from distinct podzol ho...
Summary Symbiotic ectomycorrhizal tree roots represent an important niche for interaction with bacteria since the fungi colonizing them have a large surface area and receive a direct supply of photosynthetically derived carbon. We examined individual root tips of P inus sylvestris at defined time points between 5 days and 24 weeks, identified the dominant fungi colonizing each root tip using Sanger sequencing and the bacterial...
Ectomycorrhizal roots select distinctive bacterial and ascomycete communities in Swedish subarctic forestsNARA Subscribed
Summary Ectomycorrhizal (ECM) roots represent important niches for interactions with bacteria and ascomycete fungi, since they have a large surface area and receive a direct supply of plant assimilates from their tree hosts. We tested the hypothesis that the roots colonized by specific ECM fungi harbour distinct bacteria/ascomycete communities. Roots were collected from two different locations in a subarctic shrub forest domin...
Interactions between arbuscular mycorrhizal fungi and bacteria and their potential for stimulating plant growthNARA Subscribed
Summary Arbuscular mycorrhizal (AM) fungi and bacteria can interact synergistically to stimulate plant growth through a range of mechanisms that include improved nutrient acquisition and inhibition of fungal plant pathogens. These interactions may be of crucial importance within sustainable, low‐input agricultural cropping systems that rely on biological processes rather than agrochemicals to maintain soil fertility and plant...
Summary High numbers of bacteria are associated with arbuscular mycorrhizal (AM) fungi, but their functions and in situ activities are largely unknown and most have never been characterized. The aim of the present study was to study the impact of Glomus mosseae inoculation and plant type on the active bacterial communities in soil by using a molecular approach, bromodeoxyuridine (BrdU) immunocapture in combination with termina...
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