10 hasil untuk "Pascal Benard"
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Artikel Jurnal
Impact of Pore-Scale Wettability on Rhizosphere Rewetting
Vast amounts of water flow through a thin layer of soil around the roots, the rhizosphere, where high microbial activity takes place—an important hydrological and biological hotspot. The rhizosphere was shown to turn water repellent upon drying, which has been interpreted as the effect of mucilage…
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Artikel Jurnal
Mucilage Facilitates Nutrient Diffusion in the Drying Rhizosphere
Despite detailed investigations of its distinct biochemical properties and their effects on the availability of nutrients for plants, the biophysical aspects of the rhizosphere, particularly the effect of mucilage on the transport of water and nutrients, are poorly understood. The aim of this study…
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Artikel Jurnal
Microplastic induces soil water repellency and limits capillary flow
Abstract Soils are considered the largest sink of microplastic (MP) in terrestrial ecosystems. However, little is known about the implications of MP on soil physical properties. We hypothesize that low wettability of MP induces soil water repellency, depending on MP content and size of MP and soil…
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Artikel Jurnal
Root and rhizosphere traits for enhanced water and nutrients uptake efficiency in dynamic environments
Modern agriculture’s goal of improving crop resource acquisition efficiency relies on the intricate relationship between the root system and the soil. Root and rhizosphere traits play a critical role in the efficient use of nutrients and water, especially under dynamic environments. This review…
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Artikel Jurnal
In situ measurement of 3D contact angle in sand based on X‐ray computed tomography
Abstract Soil water repellency is traditionally expressed as contact angle (CA) and measured destructively on exposed surfaces or derived from flow behavior or measured forces. These approaches cannot map local heterogeneities in CA, which typically exist in intact soil. Here, we explore the…
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Artikel Jurnal
Biogels in Soils: Plant Mucilage as a Biofilm Matrix That Shapes the Rhizosphere Microbial Habitat
Mucilage is a gelatinous high-molecular-weight substance produced by almost all plants, serving numerous functions for plant and soil. To date, research has mainly focused on hydraulic and physical functions of mucilage in the rhizosphere. Studies on the relevance of mucilage as a microbial habitat…
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Artikel Jurnal
Spatial Distribution of Mucilage in the Rhizosphere Measured With Infrared Spectroscopy
Mucilage is receiving increasing attention because of its putative effects on plant growth, but so far no method is available to measure its spatial distribution in the rhizosphere. We tested whether the C-H signal related to mucilage fatty acids is detectable by infrared spectroscopy and if this…
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Artikel Jurnal
Quantification of field earthworm burrowing rates using repeated X-ray scanning of open soil cores
Earthworms contribute to soil functioning by burrowing through soil, but quantitative knowledge of their burrowing activities and how environmental factors influence it under field conditions is still limited. The objectives of this study were to test a method for quantification of the temporal…
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Artikel Jurnal
Microhydrological Niches in Soils: How Mucilage and EPS Alter the Biophysical Properties of the Rhizosphere and Other Biological Hotspots
Plant roots and bacteria are capable of buffering erratic fluctuations of water content in their local soil environment by releasing a diverse, highly polymeric blend of substances (e.g. extracellular polymeric substances [EPS] and mucilage). Although this concept is well accepted, the physical…