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... The ultimate purpose of phytoextraction is not only to remove heavy metals from soil but also to improve soil quality. Here, we evaluated how the joint effect of Streptomyces pactum (strain Act12) and inorganic (Hoagland's solution) and organic (humic acid and peat) nutrients affected the phytoextraction practice of cadmium (Cd) and zinc (Zn) by potherb mustard, and the microbial community composi ...
rhizosphere; rhizosphere bacteria, etc ; plant development; rare species; watermelons; Show all 5 Subjects
Abstract:
... Rare bacteria in rhizospheres from natural watermelon vs chimeric watermelon were investigated to understand the rare rhizobacteria assembling processes along with plant development and effects of rare species on functional stability. Over 80% of the total OTUs were defined as rare taxa (i.e., transient, permanent, and conditionally rare) in the rhizosphere. Among these three rarities, transient r ...
rhizosphere; rhizosphere bacteria, etc ; Bacillus subtilis; Phaseolus vulgaris; beans; biomass; heat stress; Show all 7 Subjects
Abstract:
... Bacillus subtilis can mitigate crop growth and yield under heat stress. We studied whether these benefits can be reproduced in the common bean (Phaseolus vulgaris L.). We hypothesized that B. subtilis strains AP-3 and AP-12 could improve bean crop performance under heat stress. Heat stress consisted of cultivation at 35 °C compared to pots at 25 °C in controlled environment chambers. Treatments we ...
rhizosphere; rhizosphere bacteria, etc ; Pseudomonas fluorescens; amylases; enzyme kinetics; metal tolerance; pH; rice; seed germination; temperature; Show all 10 Subjects
Abstract:
... Seed germination is one of the most critical and complex physiological stages in the plant life cycle. It is highly affected by environmental stress. Priming is a promising tool for the improvement of the plant withstanding against different biotic and abiotic. Most studies that deal with the evaluation of the role of priming on germination evaluate the metabolic and biochemical reactions through ...
... The combined eco-risks of Sb (widely presented in soils, especially nearing mining areas) and the engineering nanomaterials (ENMs) (applied in agriculture and soil remediation) still remain uncovered. The current study investigated the impacts of single and combined exposure of CuO, CeO₂ nanoparticles (NPs) and multi-walled carbon nanotube (MWCNTs) with Sb on rice growths and rhizosphere bacterial ...
rhizosphere; rhizosphere bacteria, etc ; Geobacter; Massilia; cadmium; cultivars; field experimentation; microbial communities; phosphates; polluted soils; rice; China; Show all 12 Subjects
Abstract:
... The association between the rhizospheric microbial community and Cd accumulation in rice is poorly understood. A field trial was conducted to investigate the different rhizobacterial communities of two rice cultivars with high Cd accumulation (HA) and low Cd accumulation (LA) at four growth stages. Results showed that the Cd content in the roots of the HA cultivar was 1.23 - 27.53 higher than that ...
rhizosphere, etc ; biotechnology; soil; sustainable agriculture; Show all 4 Subjects
Abstract:
... Plants growing in nature live in association with beneficial, commensal, and pathogenic microbes, which make up the plant microbiota. The close interaction between plants and their microbiotas has raised fundamental questions about plant responses to these microbes and the identity of the main factors driving microbiota structure, diversity, and function in bulk soil, in the rhizosphere, and in th ...
rhizosphere; rhizosphere bacteria, etc ; Rheum officinale; heavy metals; metal tolerance; phytoaccumulation; plant growth; rhubarb; root systems; seed germination; Show all 10 Subjects
Abstract:
... Screening or breeding exceptional plant species for heavy metal phytoremediation is as important as adopting feasible measures to enhance phytoremediation efficiency, which are largely based on clarifying the mechanisms of heavy metal tolerance and accumulation by plants. In this study, cadmium (Cd) and lead (Pb) tolerance and accumulation characteristics of Rheum officinale, R. palmatum, and R. t ...
... HMs are bioaccumulative and non-biodegradable toxicants and can generate serious health risks to living organisms. The threat of low concentrations of HMs in soils is often overlooked. The BC-HMRPGPB-Plant association can provide a feasible green approach for remediation of HM-contaminated sites with low concentrations. In this study, strain AP-3 showed a high tolerance to several metals and exhib ...
... The quorum sensing (QS) system plays a significant role in the bacteria-bacteria or plant-bacteria relationships through signal molecules. However, little is known about the distribution and functional diversity of QS bacteria in the root environment of Suaeda glauca and Phragmites australis in coastal wetlands. We explored the bacterial community by amplicon sequencing and isolated 1050 strains f ...
rhizosphere, etc ; absorption; pollutants; research; water quality; Show all 5 Subjects
Abstract:
... Floating treatment wetlands (FTWs) use plants’ roots for water quality improvement. The plants are supported by a buoyant structure deployed at the water surface. The roots form a porous zone beneath the structure and remove pollutants carried in suspension through filtering, absorption and uptake. This paper used CFD simulation to model FTWs arranged in series and spanning the channel width and t ...
rhizosphere, etc ; Populus; ammonium; genomics; microRNA; plantlets; Show all 6 Subjects
Abstract:
... BACKGROUND: The net ammonium fluxes differ among the different root zones of Populus, but the physiological and microRNA regulatory mechanisms are unclear. OBJECTIVE: To elucidate the physiological and miRNA regulatory mechanisms, we investigated the two root zones displaying significant differences in net NH₄⁺ effluxes of P. × canescens. METHODS: Populus plantlets were cultivated with 500 μM NH₄C ...
... The ability of rhizosphere bacteria to induce systemic resistance in plants has been widely described in the literature. Various products of rhizobacteria act as signalling molecules, developing stress-like reactions in the plant. At the same time, the accumulation of peroxidase and other reactive oxygen species in the cell plays a major role, and is one of the most important plant defence mechani ...
rhizosphere, etc ; agriculture; fertilizer rates; fertilizers; plant height; Show all 5 Subjects
Abstract:
... Root-zone fertilization (RZF) can improve fertilizer utilization, but effective mechanical implementation methods are lacking. This article innovatively proposes an intermittent fertilization device driven by a Geneva mechanism, which can discharge fertilizer into points. The fertilizer discharge uniformity of the fertilizer feeder device was studied. The DEM-MBD method examined the factors affect ...
rhizosphere, etc ; biosphere; fungi; microbiome; models; phylogeny; soil; Show all 7 Subjects
Abstract:
... Revealing the ecological patterns of abundant and rare microbial subcommunities in rhizosphere of cultivated plant is critical for understanding plant–microbe interactions and the formation of functionally important rhizosphere microbiome. Based on rhizodeposit support effects and colonization priority effects, the present study outlined two disparate hypotheses predicting the more deterministic a ...
rhizosphere; rhizosphere bacteria, etc ; Geobacter; Massilia; Oryza sativa; Sphingomonas; bioavailability; community structure; organic matter; paddies; remediation; rice; soil; tillering; villages; China; Show all 16 Subjects
Abstract:
... This study investigated the transformations of heavy metals (HMs) and polycyclic aromatic hydrocarbons (PAHs) in rhizosphere soils and adaptive responses of rhizobacterial community under the real field conditions during four growth stages (e.g., greening, tillering, heading, and maturity) of early rice (Zhongjiazao 17) and late rice (Zhongyou 9918) in Jiangshe village (JSV) and Yangji village (YJ ...
rhizosphere; rhizosphere bacteria, etc ; Arthrobacter; Oryza sativa; anti-infective agents; biofilm; greenhouses; humans; paddies; plant growth; rice; secondary metabolites; South Korea; Show all 13 Subjects
Abstract:
... Rice is a symbol of life and a representation of prosperity in South Korea. However, studies on the diversity of the bacterial communities in the rhizosphere of rice plants are limited. In this study, four bundles of root samples were collected from the same rice field located in Goyang, South Korea. These were systematically analyzed to discover the diversity of culturable bacterial communities t ...
rhizosphere; rhizosphere bacteria, etc ; bacterial communities; carbon sequestration; environment; genetic variation; hyperaccumulators; life history; microbiome; nickel; plant physiology; soil; species diversity; temperature; Show all 14 Subjects
Abstract:
... Soils harbor some of the most diverse microbiomes on Earth and are essential for both nutrient cycling and carbon storage. Numerous parameters, intrinsic to plant physiology, life history and the soil itself, can influence the structure of rhizomicrobial communities. While our knowledge of rhizosphere microbial diversity is increasing, opinion is divided as to whether the factors that most impact ...
... Agrobacterium species are one of the most frequently isolated endophytes from root nodules of a wide range of wild and cultivated legumes. Many studies have investigated the role of endophytes in phytoprotection and phytoremediation enhancement. However, their biological significance and their implication in nodule functioning have been scarcely studied, especially, the effect of the inoculation t ...
... How organic compost interacts with plant growth-promoting microorganisms and stimulates the growth of crops are not well understood. Thus, organic compost containing the plant growth-promoting rhizobacteria Bacillus subtilis and the arbuscular mycorrhizal fungus Rhizophagus irregularis could be a potential strategy to promote the growth of soybean. We hypothesized that using both B. subtilis and R ...