· The Rhizosphere is the zone surrounding the roots of plants in which complex relations exist among the plant, the soil microorganisms and the soil itself. The plant roots and the biofilm associated with them can profoundly, influence the chemistry of the soil including pH and the transformation of mineral compounds. 4.
· We measured the soil organic C (SOC) contents and density fractions in the rhizosphere and bulk soils in the top 15 cm of mineral soil and then employed a numerical model based on the rhizosphere extent to evaluate how the rhizosphere modulates soil C sequestration under N addition.
· Soil sample (topsoil 0–20 cm) was collected from the Shizishan Mountain from Wuhan city, Hubei province. The soil type was red soil derived from the slope deposits of quartz sandstone and the soil was classified as sandy clay loam. The background value
· Rhizosphere or soil samples were taken five times over the vegetation periods. To allow a cultivation-independent analysis, total community DNA was extracted from the microbial pellet recovered from root or soil samples. 16S rDNA fragments amplified by PCR from soil or rhizosphere bacterium DNA were analyzed by denaturing gradient gel
· The rhizosphere soil was removed from the roots and roots were gently rinsed with clean water. Each plant was divided into root, stem, leaves, and ears. Then, the plants were dried in the oven at 65 °C until the weight was kept constant and ground into a powder with an electric grinder (FZ102, Shanghai, China). The ground powder was passed
· The rhizosphere soil microbe basal respiration with CT, RT, NT and RTO treatments were significantly higher (p < 0.05, p = 0.039) than that of non-rhizosphere soil. And the
The centenary of Hiltner's recognition of a rhizosphere effect is a convenient point to assess the impact of such thinking on the direction of soil science. A review of the major soil journals suggests that for much of the last century, Hiltner's insight had little effect on mainstream thinking outside of soil microbiology, but this situation is changing rapidly as the consequences of spatial
· Compared with the rhizosphere soil of HG, the alpha diversity (including Chao1, Simpson, and Shannon diversity) of bacteria and fungi community in rhizosphere soil of
· Rhizosphere effects on soil C dynamics. The positive rhizosphere effects on soil C dynamics, including SOC, MBC, C-acquisition enzymes (BG, phenol oxidase and peroxidase Fig. 1 a) indicate the importance of rhizosphere processes for soil C cycling.
The dominant bacterial and fungal genera differed significantly between rhizosphere soils of healthy and rusty root-affected P. ginseng, and linear discriminant analysis effect size (LEfSe) further indicated a strong imbalance in the soil microbial community of diseased plants.
· Microbial community functional diversity is a sensitive indicator of soil quality, soil management such as tillage and crop residue which can affect the microbial community functional diversity of paddy field. However, there is still limited information about the influence of different tillage and crop residue management on rhizosphere soil microbial community functional diversity in a double
For research in soil science, plant physiology, marine geochemistry and environmental issues, Rhizons are used frequently. For each purpose, for instance field research, green house experiments, core and rhizotron sampling in the laboratory, or subsea floor sediments, there is a specific Rhizon. Rhizosphere Research Products offers
· Rhizosphere effects on soil N mineralization were driven by the supply and microbial utilization of rhizodeposit-C (Fig. 3b,c), and this root-induced soil N mineralization was mostly derived from SOM decomposition, rather than from fresh root litter or rhizodeposit decomposition (Fig. 3d).
However, the soil metabolite profiles and the soil bacterial community structures changed in pepper rhizosphere. Eleven differential metabolites were detected between rhizosphere and bulk soils, including organic acids and sugars, which were positively or negatively correlated with the relative abundances of the differential bacteria.
Although molecular fingerprint analysis revealed changes in the rhizosphere soil microbial communities from bulk soil microbial community, no clear relationship between the microbiome composition and flowering status that might be related to phytic acid utilization of L. japonicus could be determined. However, metagenomic analysis revealed
The coupling effect of plant, soil, and microbes in bioretention provides conditions conductive for nitrogen (N) removal via nitrification, accretion, denitrification, and dissimilatory nitrate reduction to ammonium (DNRA). To assess this process, the effects of plant rhizosphere, isotope labelled inorganic N distribution, soil microenvironment variation, and functional genes' abundance at
· Isolation of Bacteria and in vitro antagonistic assay. A total of 181 Bacillus-like strains were isolated from healthy tomato rhizosphere soil and tomato plant tissue collected in either the Netherlands or Spain.Among them, 28 endophytic strains were isolated from healthy tomato plant tissues collected in Spain. 74 and 79 rhizosphere bacteria strains were isolated from tomato plants collected
· rhizosphere, the soil volume surrounding the rhizoplane that is immediately affected by root activity, and. 3. hulk soil, the soil not directly affected by living roots. This tripartite construct helps emphasize the special nature of the rhizosphere, but we suggest that it overemphasizes a dichotomy between the rhizosphere and bulk soils.
· Rhizosphere is a vital region of plant ecosystem ~2 mm from the root surface is termed as rhizosphere zone. It governs the chemistry of plant nutrient and affects growth of the plants. Nutrient requirement in agriculture has been rising and is likely to increase further to enhance the agriculture productivity across the globe in order to keep pace with growing food demand. In most of the
· In contrast, there were 13 compounds that showed lower content in the PI rhizosphere soil than the Le rhizosphere soil, which include 5-cholesten-3,26-diol, 1,25-dihydroxyvitamin D3, ethanol, androsta-1,4-dien-3-one, 17-hydroxy-17-methyl-, benzenamine, semicarbazide, pseudosmilagenin, cyclopropanecarboxylic acid, methylphosphonic acid, ethyl 3-hydroxybutyrate, ether, and fumaric acid
· Rhizosphere Root Interactions Source. The rhizosphere is a microecological zone in direct proximity of plant roots. It is often operationally defined as the soil that clings to roots after being gently shaken in water. The actual extent of the rhizosphere is dependent on the zone of influence of the plant roots and associated microorganisms.
· The rhizosphere has sometimes been depicted as a soil cylinder of given radius around the root, but drawing a boundary between rhizosphere and bulk soil is impossible because different processes result in gradients of different sizes (Hinsinger et al., 2005). From the knowledge that we now have about root systems growing under field conditions in soils used for managed production
· The soil remains a vast source of undiscovered species. The soil is also home to the greatest diversity of species on earth 1, and most soils hold in the order of one hundred species per gramabout the size of one digit of your little finger.The rhizosphere, where soil ecology and plant roots compete for nutrients or mutually support each other, is an important frontier of discovery.
Metabolomics reveals that engineered nanomaterial exposure in soil alters both soil rhizosphere metabolite profiles and maize metabolic pathways† Lijuan Zhao ,* a Huiling Zhang , a Jason C. White , b Xiaoqiang Chen , a Hongbo Li , a Xiaolei Qu a and Rong Ji * a
· Rhizosphereor more appropriately the rhizospheric areawas first defined by L. Hiltner (1904) as the volume of soil influenced by plant roots and their exudates. It is classically distinguished from bulk soil, which corresponds to the area located outside of the rhizosphere, therefore non-adhering to roots and not under its influence.
· Transcript abundance in the rhizosphere of different willow species. Permanova tests revealed a highly significant effect of soil contamination on the abundance patterns of all transcripts
Understanding how plant species influence soil nutrient cycling is a major theme in terrestrial ecosystem ecology. However, the prevailing paradigm has mostly focused on litter decomposition, while rhizosphere effects on soil organic matter (SOM) decomposition have attracted little attention. Using
· The experiment was conducted until stage R1 (50% flowering plants), comprising the 65th day after sowing. After harvest, roots were briefly shaken to separate bulk from rhizosphere soil. The soil that remained attached to the roots was defined as rhizosphere soil and extracted from the roots with the aid of a sterile brush.
· At the genus level (), GP4 and GP6 genera had higher RA in rhizosphere soil than in non-rhizosphere soil, whereas the opposite trend was observed for the other eight genera.In non-rhizosphere soil
· Introduction. The rhizosphere is a unique ecological niche that shapes microbial community structure through the interactions of plant species, root exudates, soil properties, and many other factors , .Organic substances released from roots may support high microbial biomass and metabolic activity and thus the assembly of more active and distinct microbial communities in the rhizosphere as
· In order to collect bulk soil, plants were vigorously shaken by hand for 10 min, paying attention to the roots integrity. The actual limit for shaking and thus for sampling for this soil fraction was considered as reached when roots non-adhering soil particles were completely removed (Fig. 1, Step 1). Rhizosphere soil was afterwards collected by hand-shaking roots for 10 min in one litre of a
Rhizosphere also known as the microbe storehouse is the soil zone surrounding the plant roots where the biological and chemical features of the soil are influenced by the roots. The rhizosphere is coined more than hundred years ago by Hiltner in 1904.
· The rhizosphere soil was removed from the roots and roots were gently rinsed with clean water. Each plant was divided into root, stem, leaves, and ears. Then, the plants were dried in the oven at 65 °C until the weight was kept constant and ground into a powder with an electric grinder (FZ102, Shanghai, China). The ground powder was passed
· The rhizosphere soil was removed from the roots and roots were gently rinsed with clean water. Each plant was divided into root, stem, leaves, and ears. Then, the plants were dried in the oven at 65 °C until the weight was kept constant and ground into a powder with an electric grinder (FZ102, Shanghai, China). The ground powder was passed
· 1 INTRODUCTION. Microbial decomposition of soil organic matter (SOM) constitutes one of the largest natural CO 2 fluxes to the atmosphere (Schlesinger & Andrews, 2000 Yiqi & Zhou, 2010).The decomposition of SOM can either be stimulated or suppressed by living plant roots, and this rhizosphere priming effect (RPE) potentially plays an important role in regulating soil C storage and nutrient
· There has been considerable debate on whether root/rhizosphere respiration or bulk soil respiration is more sensitive to long-term temperature changes. We investigated the response of belowground respiration to soil warming by 3 °C above ambient in bare soil plots and plots planted with wheat and maize.
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