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Mechanistic Pathways Controlling Cadmium Bioavailability and Ecotoxicity in Agricultural Systems: A Global Meta-Analysis of Lime Amendment Strategies.

Cadmium (Cd) contamination in agricultural systems poses significant ecotoxicological risks through bioaccumulation in food chains. While li … onstrates superior long-term grain Cd attenuation (65.7% inhibition) via sustained Ca2+ release and rhizosphere-regulated dissolution. This study advances mechanistic understanding of Cd bioavailability control and establishes quantitative frameworks for predicting ecotoxicological outcomes, providing scientific basis for optimizing remediation strategies to …

Antiviral activity of Micrococcus luteus against the infection of bean yellow mosaic virus in faba bean.

INTRODUCTION: Plant viruses severely affect agricultural crops and are the cause of almost half of all major plant diseases. No successful antiviral agents are now widely available for agricultural use against phytoviruses. METHODS: Micrococcus luteus was collected from the rhizosphere of faba bean and molecularly characterized via the 16S rRNA (Acc# PV650302). Soil inoculation greatly enhanced growth and induced systemic resistance to BYMV (Bean yellow mosaic virus) infection in faba bean plants grown in the greenhouse or field conditions. RESULTS AND DISCUSSION: Soil drenching application …

Recent advances in the defense mechanisms of arbuscular mycorrhizal fungi in antibiotic-contaminated soil ecosystems.

Arbuscular mycorrhizal fungi (AMF) are important soil symbionts that support plant nutrient acquisition, stress tolerance, and soil ecosyste … s. Some responses, such as changes in colonization, hyphal growth, antioxidant enzyme activity, and rhizosphere or hyphosphere microbial communities, have been experimentally observed in antibiotic-contaminated systems. By contrast, several intracellular detoxification and regulatory processes, including pathways mediated by cytochrome P450s (P450s), glutathi …

Improving the phytoremediation efficiency of soil phenanthrene contamination by addition of exogenous laccase with soil temperature regulation.

Polycyclic aromatic hydrocarbons (PAHs) pose a significant threat to ecosystem security and human health. Laccase, a copper-containing oxida … phytoremediation strategies by understanding the interplay between laccase activity, plant growth, rhizosphere microbial system, and soil temperature. The results showed that laccase addition significantly improved remediation efficiency of PHE-contaminated soil, and the highest PHE removal efficiency of 74.41 % was achieved at 26 °C soil temperature, while …

Phosphorus-loaded magnetic biochar for remediation of cadmium contaminated paddy soil: Efficacy and identification of limiting factors.

Alleviating cadmium (Cd) risk in paddy soils is a global research hotspot. Although biochar reduces Cd mobility, a holistic perspective on the effects of biochar on Cd fraction distribution in rice rhizosphere and its immobilization mechanisms is lacking. Here, we developed a pathway model that links soil physicochemical properties, IP formation, enzyme activity, microbial biomass, porewater nutrients, and soil Cd fractions to fill knowledge gaps. Results revealed that phosphorus-loaded magnetic biochar (PMLB) application increased soil pH, available phosphorus (AP), total phosphorus (TP), mic…

Co-resistance is the dominant mechanism of co-selection and dissemination of antibiotic resistome in nano zinc oxide polluted soil.

The broader soil bacterial community responses at ecotoxicologically relevant levels of nano ZnO (nZnO) focussing on co-selection of antibio … as biomarkers for rapid detection of nZnO toxicity in soils. qRT-PCR validation of resistome in the rhizosphere soil microbiome of turmeric indicated that Zn levels decreased by 16 % compared to bulk soil with 80 % bioaccumulation in rhizomes at 1000 mg Zn kg-1 and subsequent down regulation of ARGs. Expression of key biosynthetic genes for curcumin in turmer …

Distribution of trichodorid species in mainland China with description of Trichodorus hangzhouensis sp. nov. (Nematoda, Triplonchida).

Seven trichodorid species including a new one (Trichodorus hangzhouensis sp. nov., T. nanjingensis, T. pakistanensis, T. cedarus, Paratrichodorus porosus, Nanidorus renifer and N. minor) were recovered from the rhizosphere of different hosts in 13 provinces of China. Each of the recovered species was characterized based on morphology and molecular data using rRNA gene sequences. Trichodorus hangzhouensis sp. nov. is characterized by its males having medium-sized onchiostyle (46-49 µm) and three ventromedian cervical papillae (CP) anterior to the secretory-excretory (S-E) pore, CP1 located oppo…

Миксобактериальная реакция на воздействие метильясмоната свидетельствует о вкладе в набор микропрепараторов на заводы.

Химические обмены между растениями и микробами в пределах ризобиомы имеют решающее значение для развития общинной структуры. Такие летучие корневые экюды, как фитохормоновый метилжасмонат (MeJA), способствуют принятию различных мер реагирования в связи со стрессом на растения, и они были причастны к тому, чтобы играть определенную роль в поддержании микробных сообществ. Миксобактерия является компетентным хищником растительных патогенов и, как правило, считается полезной для ризобиомов. Хотя было предложено использовать миксобактерию растений для защиты от патогенов, не известно о каких-либо с

Совпадение в полном тексте источника
… Linking jasmonic acid signaling, root exudates, and rhizosphere microbiomes. Mol. Plant Microbe Interact. 28 1049–1058. 10.1094/MPMI-01-15-0016-R Chaparro J. M., Badri D. V., Vivanco J. M. (2014). Rhizosphere microbiome assemblage is affected by plant development. … Small molecules below-ground: the role of specialized metabolites in the rhizosphere. Plant J. 90 788–807. 10.1111/tpj.13543 McBride M. J., Kohler T., Zusman D. R. (1992). …

A new rare nematode Nothocriconemoides hangzhouensis n. sp. (Nematoda: Criconematidae) from Hangzhou, China.

The Family Criconematidae is commonly referred as ring nematodes that include some members with economic importance as plant parasites. During a recent nematode inventory survey at Zhejiang Province, China, a new species of genus Nothocriconemoides was detected in the rhizosphere of elm tree. Nothocriconemoides hangzhouensis n. sp. can be characterized by the female body having annuli with fine longitudinal striations and 2 to 3 anastomoses at the posterior half of the body. The first cephalic annulus is rounded and expanded enclosing the lip region, and the second annulus is narrow, offset, c…

Mercury-resistant bacteria from salt marsh of Tagus Estuary: the influence of plants presence and mercury contamination levels.

Mercury (Hg) contamination of aquatic systems has been recognized as a global, serious problem affecting both wildlife and humans. High leve … bacteria from a salt marsh of Tagus Estuary (Rosário) and (2) determine HgR bacteria levels in the rhizosphere and, consequently, their influence in metal cycling. To accomplish this objective, sediments samples were collected during the spring season in an area colonized by Sacocornia fruticosa and Spartina maritima and compared with sediments without plant …

Root Microbiome Assembly Underpins the Ecological Role of Emergent Macrophytes in a Pilot-Scale Constructed Wetland.

Constructed wetlands (CWs) depend on plant-microbe associations for pollutant transformation, yet the processes linking macrophyte identity to rhizosphere microbiome assembly remain insufficiently resolved. We compared bacterial communities associated with C. articulatus (Ca) and T. geniculata (Tg) roots with an unplanted treatment (Up) in pilot-scale CWs on the Colombian Caribbean coast. Bacterial communities were characterized by 16S rRNA gene amplicon sequencing. Co-occurrence networks, taxon-environment correlations, and the phylogenetic bin-based null model iCAMP were used to assess commu…

Roles and mechanisms of halophilic/salt-tolerant microorganisms in mitigating plant salt stress and promoting growth.

Soil salinization is a major constraint on global agricultural productivity and food security, largely because excess salts disrupt osmotic … ; reinforcement of antioxidant defense systems; stimulation of osmolyte accumulation; and effective rhizosphere colonization through exopolysaccharide secretion and biofilm formation. Representative studies in rice, wheat, maize, tomato, soybean, cucumber, chickpea, common bean, quinoa, and banana consistently show improvements in germination, biomass, physio …

The potassium homeostasis-stress adaptation continuum: An integrative signaling platform for plant survival.

Potassium (K+) is the predominant cation in plants and has traditionally been viewed as essential for nutrition and osmotic regulation. Stud … ive oxygen species (ROS) production, hormonal regulation, and immune responses. The K+ pathway from rhizosphere perception to shoot function is assessed, and the CBL (calcineurin B-like protein)-CIPK (CBL-interacting protein kinase) signaling module is highlighted as a context-dependent regulator of K+ transport. We identify the absence of a dedicated K+ sens …

Could ergothioneine serve as an indicator of functional plant-AMF interactions in crop plants?

Improving the functional benefits of arbuscular mycorrhizal fungi (AMF) is considered an important part of developing more sustainable and r … s, possibly including symbiotic signalling, carbon allocation, nutrient exchange efficiency, and/or rhizosphere microbial dynamics. We present new results showing differences in grain EGT concentration among five spring wheat varieties, supporting the possibility that host genotype influences AMF-associated EGT accumulation. We discuss potential mechanisms un …

Symbiotic interactions of plant microbiota in alleviating stress: a review.

Plants continuously encounter a wide range of biotic and abiotic stresses that adversely affect their growth, development, and productivity. … ered quorum-sensing circuits, holobiont-level analyses, and nanoparticle-mediated modulation of the rhizosphere microbiome, for understanding and engineering beneficial plant-microbe interactions. Collectively, these advances offer new insights into symbiotic crosstalk and provide a foundation for developing resilient and sustainable agricultural systems.

Mechanism of ion homeostasis mediated by arbuscular mycorrhizal fungi in plant responses to saline-alkaline stress.

Against the backdrop of global climate change, soil salinization and alkalization have emerged as major environmental constraints on sustain … rient exchange and ion compartmentalization mediated by intraradical structures, improvement of the rhizosphere environment by AMF-derived substances, and the regulation of Na+ efflux and translocation, Na+ and Cl- sequestration, as well as K+ and Ca2+ uptake and allocation. Collectively, these mechanisms elucidate how AMF alleviates ion toxicity and nutrient …

Enhanced drought tolerance in Arabidopsis thaliana is mediated by Pseudomonas sp. M25 linked to root hair growth.

Plants establish intimate associations with rhizosphere microorganisms that profoundly influence their growth, development, and stress resilience. Among these, plant-growth-promoting rhizobacteria (PGPR) enhance nutrient acquisition, modulate phytohormone homeostasis and reshape root system architecture, thereby improving plant fitness. Despite extensive evidence supporting their beneficial effects, the molecular and cellular mechanisms underlying microbe-driven modulation of specific root traits remain incompletely understood. Through extensive phenotypic investigation, we established that Ps…

How toxic and hazardous pollutants influence the treatment performance of constructed wetlands: A review of pathways and mechanisms.

With the growing global recognition of nature-based solutions, constructed wetlands (CWs) have been increasingly applied for advanced wastew … aintaining ecological function through multifunctional substrate utilization, microbial regulation, rhizosphere engineering, and intelligent operation strategies.

Coffee endophytes: diversity, ecological functions, and application prospects in sustainable production.

Coffee production is increasingly constrained by climatic variability, unstable yields, major pests and diseases, and growing demand for consistent bean quality. Endophytic microorganisms that colonize internal coffee tissues may contribute to plant growth, stress tolerance, disease and pest suppression, and postharvest quality-related processes. However, current knowledge remains fragmented because confirmed endophytes, rhizosphere microorganisms, phyllosphere taxa, and fermentation-associated microbiota are often discussed together. This review synthesizes coffee endophyte diversity, tissue-…

Effects of developmental stage-driven fungal community shifts on biomass and metabolite accumulation in Gastrodia elata.

BACKGROUND: Fungal communities play crucial roles in plant development and metabolite accumulation, especially in fully mycoheterotrophic me … age-specific selective recruitment and dynamic remodeling of fungal communities in both rhizome and rhizosphere compartments. Structural equation modeling indicated that developmental stage, fungal α-diversity, and community structure exert both direct and indirect effects on biomass and the accumulation of bioactive compounds. High-resolution association net …