Climate change impacts on plant pathogens, food security and paths forward

Nature Reviews Microbiology, Journal Year: 2023, Volume and Issue: 21(10), P. 640 - 656

Published: May 2, 2023

Language: Английский

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The phyllosphere microbiome shifts toward combating melanose pathogen

Microbiome, Journal Year: 2022, Volume and Issue: 10(1)

Published: April 2, 2022

Plants can recruit beneficial microbes to enhance their ability defend against pathogens. However, in contrast the intensively studied roles of rhizosphere microbiome suppressing plant pathogens, collective community-level change and effect phyllosphere response pathogen invasion remains largely elusive.Here, we integrated 16S metabarcoding, shotgun metagenomics culture-dependent methods systematically investigate changes between infected uninfected citrus leaves by Diaporthe citri, a fungal causing melanose disease worldwide. Multiple features suggested shift upon D. citri infection, highlighted marked reduction community evenness, emergence large numbers new microbes, intense microbial network. We also identified from functional perspectives leaves, such as enriched functions for iron competition potential antifungal traits, with genomic characteristics. Glasshouse experiments demonstrated that several bacteria associated could positively affect performance under challenge, reductions index ranging 65.7 88.4%. Among them, Pantoea asv90 Methylobacterium asv41 "recruited microbes" exhibited antagonistic activities both vitro vivo, including inhibition spore germination and/or mycelium growth. Sphingomonas spp. presented characteristics were found be main contributor enrichment complex outer membrane receptor protein leaves. Moreover, asv20 showed stronger suppression iron-deficient conditions than iron-sufficient conditions, suggesting role during action.Overall, our study revealed how microbiomes differed pathogen, mechanisms observed might have helped plants cope pressure. Our findings provide novel insights into understanding responses challenge. Video abstract.

Language: Английский

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Plant domestication shapes rhizosphere microbiome assembly and metabolic functions

Microbiome, Journal Year: 2023, Volume and Issue: 11(1)

Published: March 31, 2023

The rhizosphere microbiome, which is shaped by host genotypes, root exudates, and plant domestication, crucial for sustaining agricultural growth. Despite its importance, how domestication builds up specific microbiomes metabolic functions, as well the importance of these affected rhizobiomes relevant exudates in maintaining growth, not understood. Here, we firstly investigated bacterial fungal communities wild accessions tetraploid wheat using amplicon sequencing (16S ITS) after 9 years process at main production sites China. We then explored ecological roles exudation shaping microbiome functions integrating metagenomics genomics approaches. Furthermore, established evident linkages between morphology traits keystone taxa based on microbial culture inoculation experiments.Our results suggested that were co-shaped both genotypes status. genomes contributed more variation diversity composition than communities, whereas status exerted much stronger influences communities. In terms interkingdom association networks, destabilized network depleted abundance taxa. Moreover, found shifted from slow growing fungi dominated to fast bacteria dominated, thereby resulting a shift fungi-dominated membership with enrichment carbon fixation genes bacteria-dominated degradation genes. Metagenomics analyses further indicated cultivars possess higher function domesticated cultivars. Notably, cultivar able harness microorganism carrying N transformation (i.e., nitrification, denitrification) P mineralization pathway, inorganic fixation, organic ammonification, solubilization are recruited releasing wheat. More importantly, our metabolite-wide study contrasting functional harnessed different nutrient acquisition strategies jointly determined aboveground phenotypes. observed although wheats distinct domestication-induced recruitment led consistent growth regulation regardless status.Our indicate profoundly assembly provide evidence plants differentiated role root-associated through release sustain belowground multi-nutrient cycles These findings valuable insights into mechanisms underlying plant-microbiome interactions crop improvement sustainable agriculture. Video Abstract.

Language: Английский

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Plant microbiota dysbiosis and the Anna Karenina Principle

Trends in Plant Science, Journal Year: 2022, Volume and Issue: 28(1), P. 18 - 30

Published: Sept. 17, 2022

Language: Английский

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Actinobacteria as Effective Biocontrol Agents against Plant Pathogens, an Overview on Their Role in Eliciting Plant Defense

Microorganisms, Journal Year: 2022, Volume and Issue: 10(9), P. 1739 - 1739

Published: Aug. 29, 2022

Pathogen suppression and induced systemic resistance are suitable alternative biocontrol strategies for integrated plant disease management potentially comprise a sustainable to agrochemicals. The use of Actinobacteria as agents is accepted in practical agriculture, short overview on the plant-beneficial members this phylum recent updates their efficacies two topics review. include large portion microbial rhizosphere communities colonizers tissues that not only produce pest-antagonistic secondary metabolites enzymes but also stimulate growth. Non-pathogenic can induce against pathogens, mechanisms still poorly described. In absence pathogen, mild defense response elicited under jasmonic acid salicylic signaling involves pathogenesis-related proteins metabolites. Priming partly includes same compounds sole actinobacterium, additional involvement ethylene has been suggested. Recent amplicon sequencing studies bacterial suggest future work may reveal how active strains be enriched rhizosphere.

Language: Английский

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Soil and Phytomicrobiome for Plant Disease Suppression and Management under Climate Change: A Review

Plants, Journal Year: 2023, Volume and Issue: 12(14), P. 2736 - 2736

Published: July 23, 2023

The phytomicrobiome plays a crucial role in soil and ecosystem health, encompassing both beneficial members providing critical goods services pathogens threatening food safety security. potential benefits of harnessing the power for plant disease suppression management are indisputable interest agriculture but also forestry landscaping. Indeed, diseases can be mitigated by situ manipulations resident microorganisms through agronomic practices (such as minimum tillage, crop rotation, cover cropping, organic mulching, etc.) well applying microbial inoculants. However, numerous challenges, such lack standardized methods microbiome analysis difficulty translating research findings into practical applications at stake. Moreover, climate change is affecting distribution, abundance, virulence many pathogens, while altering functioning, further compounding strategies. Here, we will first review literature demonstrating how agricultural have been found effective promoting health enhancing suppressiveness mitigation shift phytomicrobiome. Challenges barriers to identification use then discussed before focusing on impacts functioning outcome.

Language: Английский

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Biocontrol mechanisms of Bacillus: Improving the efficiency of green agriculture

Microbial Biotechnology, Journal Year: 2023, Volume and Issue: 16(12), P. 2250 - 2263

Published: Oct. 14, 2023

Abstract Species of the genus Bacillus have been widely used for biocontrol plant diseases in demand sustainable agricultural development. New mechanisms underlying activity revealed with development microbiome and microbe‐plant interaction research. In this review, we first briefly introduce typical mechanisms, such as production antimicrobial compounds, competition niches/nutrients, induction systemic resistance. Then, discussed detail new pathogen quorum sensing interference reshaping soil microbiota. The “cry help” mechanism was also introduced, which plants can release specific signals under attack to recruit root colonization against invasion. Finally, two emerging strategies enhancing efficacy agents, including construction synthetic microbial consortia application rhizosphere‐derived prebiotics, were proposed.

Language: Английский

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Purines enrich root-associated Pseudomonas and improve wild soybean growth under salt stress

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: April 25, 2024

Abstract The root-associated microbiota plays an important role in the response to environmental stress. However, underlying mechanisms controlling interaction between salt-stressed plants and are poorly understood. Here, by focusing on a salt-tolerant plant wild soybean ( Glycine soja ), we demonstrate that highly conserved microbes dominated Pseudomonas enriched root rhizosphere of plant. Two corresponding isolates confirmed enhance salt tolerance soybean. Shotgun metagenomic metatranscriptomic sequencing reveal motility-associated genes, mainly chemotaxis flagellar assembly, significantly expressed salt-treated samples. We further find roots stressed secreted purines, especially xanthine, which induce motility isolates. Moreover, exogenous application for xanthine non-stressed results enrichment, reproducing shift root. Finally, mutant analysis shows related gene cheW is required toward enhancing tolerance. Our study proposes recruits beneficial species exudating key metabolites (i.e., purine) against

Language: Английский

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Ectomycorrhizal fungi explain more variation in rhizosphere nutrient availability than root traits in temperate forests

Applied Soil Ecology, Journal Year: 2025, Volume and Issue: 207, P. 105923 - 105923

Published: Feb. 5, 2025

Language: Английский

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Plant–Microbiome Crosstalk: Dawning from Composition and Assembly of Microbial Community to Improvement of Disease Resilience in Plants

International Journal of Molecular Sciences, Journal Year: 2021, Volume and Issue: 22(13), P. 6852 - 6852

Published: June 25, 2021

Plants host diverse but taxonomically structured communities of microorganisms, called microbiome, which colonize various parts plants. Plant-associated microbial have been shown to confer multiple beneficial advantages their plants, such as nutrient acquisition, growth promotion, pathogen resistance, and environmental stress tolerance. Systematic studies provided new insights into the economically ecologically important hubs core microbiota revealed impacts on Microbiome engineering, can improve functional capabilities native species under challenging agricultural ambiance, is an emerging biotechnological strategy crop yield resilience against variety constraints both biotic abiotic nature. This review highlights importance indigenous in improving plant health pathogen-induced stress. Moreover, potential solutions leading towards commercialization proficient bioformulations for sustainable improved production are also described.

Language: Английский

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