The biology and chemistry of a mutualism between a soil bacterium and a mycorrhizal fungus

Current Biology, Journal Year: 2024, Volume and Issue: 34(21), P. 4934 - 4950.e8

Published: Oct. 7, 2024

Highlights•B. velezensis colonizes the entire mycelial network more efficiently than roots•Bacillus uses fungal hyphae as highways for soil invasion and to colonize new plant•The lipopeptide surfactin plays key roles in chemical ecology of interaction•The microbial partnership enhances systemic resistance tomato against BotrytisSummaryArbuscular mycorrhizal (AM) fungi (e.g., Rhizophagus species) recruit specific bacterial species their hyphosphere. However, interplay mutual benefit this intricate have not been investigated yet, especially it involves bacteria known strong producers antifungal compounds such Bacillus velezensis. Here, we show that soil-dwelling B. migrates along hyphal AM fungus R. irregularis, forming biofilms inducing cytoplasmic flow contributes host plant root colonization by bacterium. During hyphosphere colonization, irregularis modulates biosynthesis specialized metabolites ensure stable coexistence a mechanism ward off mycoparasitic bacteria. These benefits are extended into tripartite context via provision enhanced protection through induction resistance.Graphical abstract

Language: Английский

---

An assessment of plant growth and physiological responses in annual crops grown in P deficient soils inoculated with indigenous arbuscular mycorrhizal fungi

Brazilian Journal of Microbiology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 29, 2025

Language: Английский

---

Hotspots of enzyme activities reflect micro-scale heterogeneity in nutrient mobilization in paddy soils

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

Published: Feb. 4, 2025

Language: Английский

---

Current Approaches for Genetic Manipulation of Streptomyces spp.—Key Bacteria for Biotechnology and Environment

BioTech, Journal Year: 2025, Volume and Issue: 14(1), P. 3 - 3

Published: Jan. 2, 2025

Organisms from the genus Streptomyces feature actinobacteria with complex developmental cycles and a great ability to produce variety of natural products. These soil bacteria more than 2/3 antibiotics used in medicine, large bioactive compounds for industrial, medical agricultural use. Although spp. have been studied decades, engineering these remains challenging, available genetic tools are rather limited. Furthermore, most biosynthetic gene clusters silent require strategies activate them exploit their production potential. In order explore, understand manipulate capabilities as key bacterial biotechnology, synthetic biology emerged valuable component research. Recent advancements manipulation involving proposals components toolbox, well new approaches genome mining, assembly constructs delivery into cell, allowed facilitation turnaround time strain efficient products at an industrial scale, but still strain- design-dependent limitations. A perspective offered recently by technical advances DNA sequencing, analysis editing proposed overcome construct-specific difficulties Streptomyces. this review, challenges recent developments discussed, overview novel is provided examples successful application technologies molecular highlighted.

Language: Английский

---

Keystone root bacteria in Ambrosia artemisiifolia promote invasive growth by increasing the colonization rate of Funneliformis mosseae

Microbiological Research, Journal Year: 2025, Volume and Issue: 293, P. 128081 - 128081

Published: Jan. 29, 2025

Language: Английский

---

Bacterial community in the hyphosphere of an arbuscular mycorrhizal fungus differs from that in the surrounding environment and is influenced by hyphal disruption

Mycorrhiza, Journal Year: 2025, Volume and Issue: 35(1)

Published: Feb. 1, 2025

Language: Английский

---

A field survey: Distinctive composition of core and keystone taxa in root microbiota of Carex cepillacea on the Qinghai-Tibet Plateau

Soil Ecology Letters, Journal Year: 2025, Volume and Issue: 7(2)

Published: March 12, 2025

Language: Английский

---

Harnessing plant–microbe interactions: strategies for enhancing resilience and nutrient acquisition for sustainable agriculture

Frontiers in Plant Science, Journal Year: 2025, Volume and Issue: 16

Published: April 15, 2025

The rhizosphere, a biologically active zone where plant roots interface with soil, plays crucial role in enhancing health, resilience, and stress tolerance. As key component achieving Sustainable Development Goal 2, the rhizosphere is increasingly recognized for its potential to promote sustainable agricultural productivity. Engineering microbiome emerging as an innovative strategy foster growth, improve adaptation, restore soil health while mitigating detrimental effects of conventional farming practices. This review synthesizes recent advancements omics technologies, sequencing tools, synthetic microbial communities (SynComs), which have provided insights into complex interactions between plants microbes. We examine root exudates, composed organic acids, amino sugars, secondary metabolites, biochemical cues that shape beneficial rhizosphere. further explores how advanced techniques like metagenomics metabolomics are employed elucidate mechanisms by exudates influence health. Tailored SynComs shown promising resilience against both abiotic stresses (e.g., drought salinity) biotic challenges pathogens pests). Integration these microbiomes optimized exudate profiles has been nutrient cycling, suppress diseases, alleviate environmental stresses, thus contributing more By leveraging multi-disciplinary approaches optimizing profiles, ecological engineering plant-microbiome presents pathway boosting crop approach also aids managing soil-borne reducing chemical input dependency, aligning Goals aimed at global food security sustainability. ongoing research offers significant promise ensuring long-term productivity preserving future generations.

Language: Английский

---

Unveiling the hidden world: How arbuscular mycorrhizal fungi and its regulated core fungi modify the composition and metabolism of soybean rhizosphere microbiome

Environmental Microbiome, Journal Year: 2024, Volume and Issue: 19(1)

Published: Oct. 22, 2024

The symbiosis between arbuscular mycorrhizal fungi (AMF) and plants often stimulates plant growth, increases agricultural yield, reduces costs, thereby providing significant economic benefits. AMF can also benefit through affecting the rhizosphere microbial community, but underlying mechanisms remain unclear. Using Rhizophagus intraradices as a model species, we assessed how influences bacterial composition functional diversity 16 S rRNA gene sequencing non-targeted metabolomics analysis in of aluminum-sensitive soybean that were inoculated with pathogenic fungus Nigrospora oryzae phosphorus-solubilizing Talaromyces verruculosus an acidic soil. inoculation R. intraradices, N. T. didn't have influence on levels soil C, N, P, or various characteristics such seed weight, crude fat protein content. However, their affected structure, function nutrient dynamics resident community. co-inoculation increased relative abundance Pseudomonas psychrotolerans, which was capable N-fixing related to cry-for-help theory (plants signal for beneficial microbes when under stress), within rhizosphere. expression metabolic pathways associated synthesis unsaturated fatty acids, known enhance resistance adverse environmental conditions. stimulated stress response inside environment by enriching polyene macrolide antifungal antibiotic-producing genus Streptomyces root endosphere upregulating two antibacterial activity steroid biosynthesis Although enriched Bradyrhizobium urease activity, it had no effects biomass N content soybean. Lastly, host niches exhibited differences most bacteria accumulating Rhizobium vallis only detected endosphere. Our findings demonstrate intricate interactions AMF, core fungi, root-associated ecological co-mediate regulation nutrients, composition, function, metabolisms microbiome improved recruiting specific PGPR promotion pathway. antibiotic production reaction-associated pathways. utility evaluation some agents should consider potential impact Olsen-P soils limited P availability. sampling compartments (i.e., rhizosphere) exerted greater assembly shift community than application agents.

Language: Английский

---

Arbuscular mycorrhizal fungal highways – what, how and why?

Soil Biology and Biochemistry, Journal Year: 2024, Volume and Issue: unknown, P. 109702 - 109702

Published: Dec. 1, 2024

Language: Английский

---