Tag: Shewanella
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Salt Stress and the Wild Soybean Microbiome: Rhizosphere vs. Surrounding Environment
Introduction: Why study salt stress and the soybean microbiome? Salt stress dramatically alters plant performance and microbial communities. In a controlled hydroponic system using Hoagland’s solution, researchers can isolate the direct effects of NaCl concentration on the rhizosphere (root-associated) and the surrounding water environment of wild soybean (Glycine soja) without the confounding variables of soil.…
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Salt Stress Shapes Rhizosphere and Environmental Bacterial Communities in Wild Soybean (Glycine soja)
Introduction Wild soybean (Glycine soja) growing in coastal saline habitats relies on a complex microbiome to cope with salt stress. This study uses a hydroponic system with Hoagland’s solution to precisely control NaCl concentrations and to clearly separate rhizosphere bacteria from those in the surrounding water environment. By comparing a control (CK) with low (LT),…
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Salt Stress Shifts Wild Soybean Rhizosphere Microbiome: A Comparative Study
Introduction and study design Understanding how salinity affects plant-associated microbial communities is essential for unraveling plant resilience mechanisms. This study used a controlled hydroponic system with Hoagland’s nutrient solution to isolate the effects of salt (NaCl) on bacterial communities in the rhizosphere of wild soybean (Glycine soja) and its surrounding water environment. Four treatments were…
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Multi-technique Characterization of Iron Reduction by an Antarctic Shewanella: An Analog System for Putative Martian Biosignature Identification
Introduction: Using terrestrial extremophiles to inform Martian biosignature detection Microbes from extreme Earth environments offer valuable testbeds for understanding biosignature production under conditions reminiscent of early Mars. Iron reduction is an ancient microbial metabolism that can influence mineralogy and volatile byproducts in ways that may be recognizable by current and future space instruments. In this…
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Multi-Technique Characterization of Iron Reduction by an Antarctic Shewanella: An Analog System for Martian Biosignature Identification
Introduction: Using Antarctic Extremophiles to Probe Martian Biosignatures Terrestrial microbes from extreme environments are invaluable for testing biosignature production under conditions that resemble ancient or present-day Mars. In particular, iron-reducing bacteria such as Shewanella species offer a window into metabolic processes that could have occurred in Martian lacustrine and subaqueous environments. This study investigates biosignature…