Rhizosphere Microorganisms Supply Availability of Soil Nutrients and Induce Plant Defense

Microorganisms, Journal Year: 2024, Volume and Issue: 12(3), P. 558 - 558

Published: March 11, 2024

Plant health is necessary for food security, which a key determinant of secure and sustainable production systems. Deficiency soil nutrients invasion plant pathogens or insects are the main destroyers world’s production. Synthetic fertilizers chemical-based pesticides frequently employed to combat problems. However, these have negative impacts on microbial ecosystems ecosystem functioning. Rhizosphere microorganisms demonstrated their potency improve manage encourage growth, resulting in increased yield quality by converting organic inorganic substances around rhizosphere zone into available nutrients. Besides regulating nutrient availability growth enhancement, rhizobacteria fungi can restrict that cause disease secreting inhibitory chemicals boosting immunity pests pathogens. Thus, viewed as viable, alluring economic approaches agriculture biofertilizers biopesticides. This review provides an overview role inducing defenses. Moreover, discussion presented surrounding recent consequences employing strategy towards improving fertilization effectiveness, encouraging stronger, more pest-resistant plants.

Language: Английский

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Soil microbial nitrogen-cycling gene abundances in response to crop diversification: A meta-analysis

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 838, P. 156621 - 156621

Published: June 9, 2022

Language: Английский

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Long-term metal pollution shifts microbial functional profiles of nitrification and denitrification in agricultural soils

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 830, P. 154732 - 154732

Published: March 26, 2022

Language: Английский

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Warming-Induced Stimulation of Soil N₂O Emissions Counteracted by Elevated CO₂ from Nine-Year Agroecosystem Temperature and Free Air Carbon Dioxide Enrichment

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(14), P. 6215 - 6225

Published: March 28, 2024

Globally, agricultural soils account for approximately one-third of anthropogenic emissions the potent greenhouse gas and stratospheric ozone-depleting substance nitrous oxide (N2O). Emissions N2O from are affected by a number global change factors, such as elevated air temperatures atmospheric carbon dioxide (CO2). Yet, mechanistic understanding how these climatic factors affect in remains largely unresolved. Here, we investigate soil emission pathway using 15N tracing approach nine-year field experiment combined temperature free enrichment (T-FACE). We show that effect CO2 completely counteracts warming-induced stimulation both nitrification- denitrification-derived emissions. The induced decrease pH labile organic nitrogen (N) masked N warming. Unexpectedly, warming had little on abundances nitrifying denitrifying genes. Overall, our study confirms importance multifactorial experiments to understand pathways under climate change. This better is prerequisite more accurate models development effective options combat

Language: Английский

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Kinetic and Physiological Characterization of Acidophilic Nitrobacter spp. in a Nitrite-Oxidizing Culture

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 12, 2025

Novel acidophilic nitrite-oxidizing Nitrobacter spp. were enriched, with kinetic and physiological features characterized comprehensively. The enrichment culture was cultivated in a membrane bioreactor at pH 4.6–5.5 for 500 days, relative abundance of 16S rRNA genes 17.9 ± 0.5% during the characterization experiments. Metagenomic analysis recovered 2 genomes, which corresponded to previously unknown species within genus average nucleotide identity (ANI) < 91% compared publicly available genomes. In contrast known NOB, exhibited strong tolerance environmental stress, including low free nitrous acid (FNA), have affinity oxygen. Moreover, also higher nitrite (Km = 0.19 0.03 mg NO2–-N/L) than all currently cultures. These characteristics define as both K-strategist an adversity-strategist that tends flourish acidic activated sludge, where (<5.5) levels suppress other nitrifiers. This study extends our understanding nitrifiers growing environments provides potential remove nitrogen wastewater.

Language: Английский

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Understanding and exploring the diversity of soil microorganisms in tea (Camellia sinensis) gardens: toward sustainable tea production

Frontiers in Microbiology, Journal Year: 2024, Volume and Issue: 15

Published: April 12, 2024

Leaves of Camellia sinensis plants are used to produce tea, one the most consumed beverages worldwide, containing a wide variety bioactive compounds that help promote human health. Tea cultivation is economically important, and its sustainable production can have significant consequences in providing agricultural opportunities lowering extreme poverty. Soil parameters well known affect quality resultant leaves consequently, understanding diversity functions soil microorganisms tea gardens will provide insight harnessing microbial communities improve yield quality. Current analyses indicate garden soils possess rich composition diverse (bacteria fungi) which bacterial Proteobacteria, Actinobacteria, Acidobacteria, Firmicutes Chloroflexi fungal Ascomycota, Basidiomycota, Glomeromycota prominent groups. When optimized, these microbes’ function keeping ecosystems balanced by acting on nutrient cycling processes, biofertilizers, biocontrol pests pathogens, bioremediation persistent organic chemicals. Here, we summarize research activities (tea garden) as biological control agents bioremediators health quality, focusing mainly members. Recent advances molecular techniques characterize examined. In terms viruses there paucity information regarding any beneficial gardens, although some instances insect pathogenic been pests. The potential reported here, recent study their genetic manipulation, aimed at improving for production.

Language: Английский

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Recent trends in nitrogen cycle and eco-efficient nitrogen management strategies in aerobic rice system

Frontiers in Plant Science, Journal Year: 2022, Volume and Issue: 13

Published: Aug. 25, 2022

Rice ( Oryza sativa L.) is considered as a staple food for more than half of the global population, and sustaining productivity under scarcity resources challenging to meet future demands inflating population. The aerobic rice system can be transformational replacement traditional rice, but widespread adaptation this innovative approach has been challenged due higher losses nitrogen (N) reduced N-use efficiency (NUE). For normal growth developmental processes in crop plants, N required amounts. mineral nutrient an important constituent amino acids, nucleic many photosynthetic metabolites, hence essential plant metabolism. Excessive application fertilizers improves yield, compromises economic environmental sustainability. Irregular uncontrolled use have elevated several issues linked form nitrous oxide (N 2 O), ammonia (NH 3 ), nitrate (NO – thereby threatening sustainability warming potential, ozone depletion capacities, abilities eutrophicate water resources. Hence, enhancing NUE become urgent need development sustainable production system. This article was designed investigate major challenge low evaluate recent advances pathways cycle system, suggest agronomic management approaches improve NUE. objective review about optimizing inputs while ensuring safety. elaborates that different soil conditions significantly shift dynamics via changes comprehensively reviews facts why are high which factors hinder attaining NUE, how it eco-efficient through managements. Moreover, explores interactive mechanisms proper accomplished optimized fertilizer amendments. Meanwhile, study suggests agricultural approaches, such site-specific management, integrated (INM), incorporation with enhanced may interactively uptake Additionally, resource conservation practices, residue green manuring, improved genetic breeding, precision farming, enhance Deep insights into necessarily suggested adjustments reduce Future research on encouraged focusing evaluation shifts among activities diversity microbial communities, applying measures, necessary its face projected climate change

Language: Английский

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Unravelling knotweed clonal control of soil microbial activities related to the nitrogen cycle through plant growth phases and ramet positions within the patch

Plant and Soil, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 13, 2025

Language: Английский

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Heterotrophic nitrate reduction potential of an aquifer microbial community from psychrophilic to thermophilic conditions

The Science of The Total Environment, Journal Year: 2025, Volume and Issue: 967, P. 178716 - 178716

Published: Feb. 12, 2025

High temperature-aquifer thermal energy storage (HT-ATES) aims at the seasonal and extraction of large quantities heat in subsurface. However, impacts temperature fluctuations caused by HT-ATES toward biodiversity ecosystem services subsurface environment with respect to nitrogen cycle remain unclear. Hence, understanding possible adaptation mechanisms aquifer microbial communities is crucial assess potential environmental risks associated HT-ATES. In this study, we investigated effects temperatures between 12 °C 80 on a pristine community its capacity reduce nitrate, common global groundwater contaminant. 13C-labeled acetate was used as easily consumable carbon source for nitrate reduction, allowing precise activity measurement analysis released 13CO2. We observed reduction coupled mineralization °C, 25 38 45 60 but not °C. The rates were significantly higher than Temperature affected composition acetate-mineralizing, nitrate-reducing communities. Members families Pseudomonadaceae Comamonadaceae mainly developed enrichments incubated whereas phylotypes affiliated Rhizobiaceae dominated At belonging Symbiobacteriaceae, Paenibacillaceae Planococcaceae developed. These findings indicate that indigenous microbiome can maintain ability over wide range, providing support may allow while simultaneously attenuating pollution.

Language: Английский

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Differential Responses of Soil Ammonia-oxidizing Bacterial and Archaeal Communities to Land-use Changes in Zambia

Microbes and Environments, Journal Year: 2025, Volume and Issue: 40(1), P. n/a - n/a

Published: Jan. 1, 2025

Soil nutrient loss from intensive farming is a critical issue in sub-Saharan Africa that affects food security. While soil microbial nitrification supplies available nitrogen, excessive leads to nitrogen loss. However, the species driving and their functions this region remain largely unknown. Therefore, we investigated responses of ammonia-oxidizing bacterial (AOB) archaeal (AOA) communities land-use changes Zambia relationship with potential. samples were collected three sites all had neighboring natural farmed (maize) lands. We measured potential, quantified AOB AOA, analyzed these by targeting ammonia monooxygenase subunit A (amoA) gene, which encodes key enzyme nitrification. Nitrification potential was 1.51-fold higher farmlands than abundance tended be greater farmlands, whereas AOA smaller. Farming changed community structure, increasing Nitrosospira cluster 3a.2 at sites, while minor site-specific also observed. In contrast, structure not significantly different between land uses, but varied among NS-ζ being more prominent one site neutral (pH 7.64) other 5.70 5.71). These results suggest generally vulnerable farming, decreasing without structural changes, some increased, structure. insights are fundamental for understanding depletion due under crucial developing sustainable practices Africa.

Language: Английский

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