Precision Probiotics in Agroecosystems: Multiple Strategies of Native Soil Microbiotas for Conquering the Competitor Ralstonia solanacearum

Yin, Jiakang; Guo, Yi-Xiong; Chen, Yue; Xu, Yongsheng; Chen, Wenxuan; Shao, Yongfu; Yu, Youfeng; Zhu, Lixia; Ruan, Lifang

doi:10.1128/msystems.01159-21

Cited by 7 publications

(6 citation statements)

References 97 publications

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“…We categorize this ecological function as biomodulators . Alternatively, some rhizosphere microorganisms indirectly promote plant growth by producing exo‐metabolites that down‐regulate – and even suppress – the expression of virulence genes in phytopathogens (Yin et al., 2022 ). We refer to them as biosuppressors .…”

Section: From ‘Plant Growth‐promoting Microorganisms’ and ‘Bioinocula...mentioning

confidence: 99%

“…We named these microorganisms foliar bioprotectors . Finally, since some members of the rhizosphere microbiome ‘collaborate’ with pathogens in accelerating disease progression by strengthening their chemotaxis (Jung et al., 2018 ; Yin et al., 2022 ), any antagonist to these ‘helper’ microbes will indirectly favour the health of their plant hosts. We refer to them as pathogen‐helper antagonists .…”

Section: From ‘Plant Growth‐promoting Microorganisms’ and ‘Bioinocula...mentioning

confidence: 99%

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Fungi beyond limits: The agricultural promise of extremophiles

Zenteno‐Alegría,

Yarzábal Rodríguez,

Ciancas Jiménez

et al. 2024

Microbial Biotechnology

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Global climate changes threaten food security, necessitating urgent measures to enhance agricultural productivity and expand it into areas less for agronomy. This challenge is crucial in achieving Sustainable Development Goal 2 (Zero Hunger). Plant growth‐promoting microorganisms (PGPM), bacteria and fungi, emerge as a promising solution to mitigate the impact of climate extremes on agriculture. The concept of the plant holobiont, encompassing the plant host and its symbiotic microbiota, underscores the intricate relationships with a diverse microbial community. PGPM, residing in the rhizosphere, phyllosphere, and endosphere, play vital roles in nutrient solubilization, nitrogen fixation, and biocontrol of pathogens. Novel ecological functions, including epigenetic modifications and suppression of virulence genes, extend our understanding of PGPM strategies. The diverse roles of PGPM as biofertilizers, biocontrollers, biomodulators, and more contribute to sustainable agriculture and environmental resilience. Despite fungi's remarkable plant growth‐promoting functions, their potential is often overshadowed compared to bacteria. Arbuscular mycorrhizal fungi (AMF) form a mutualistic symbiosis with many terrestrial plants, enhancing plant nutrition, growth, and stress resistance. Other fungi, including filamentous, yeasts, and polymorphic, from endophytic, to saprophytic, offer unique attributes such as ubiquity, morphology, and endurance in harsh environments, positioning them as exceptional plant growth‐promoting fungi (PGPF). Crops frequently face abiotic stresses like salinity, drought, high UV doses and extreme temperatures. Some extremotolerant fungi, including strains from genera like Trichoderma, Penicillium, Fusarium, and others, have been studied for their beneficial interactions with plants. Presented examples of their capabilities in alleviating salinity, drought, and other stresses underscore their potential applications in agriculture. In this context, extremotolerant and extremophilic fungi populating extreme natural environments are muchless investigated. They represent both new challenges and opportunities. As the global climate evolves, understanding and harnessing the intricate mechanisms of fungal‐plant interactions, especially in extreme environments, is paramount for developing effective and safe plant probiotics and using fungi as biocontrollers against phytopathogens. Thorough assessments, comprehensive methodologies, and a cautious approach are crucial for leveraging the benefits of extremophilic fungi in the changing landscape of global agriculture, ensuring food security in the face of climate challenges.

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Section: From ‘Plant Growth‐promoting Microorganisms’ and ‘Bioinocula...mentioning

confidence: 99%

Section: From ‘Plant Growth‐promoting Microorganisms’ and ‘Bioinocula...mentioning

confidence: 99%

Fungi beyond limits: The agricultural promise of extremophiles

Zenteno‐Alegría,

Yarzábal Rodríguez,

Ciancas Jiménez

et al. 2024

Microbial Biotechnology

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“…Plant probiotics must contain some PGP traits such as the solubilization of elements (P, K, and Zn; Singh et al, 2022), nitrogen fixation (Pandey et al, 2022), production of phytohormones (Kurniawan and Chuang, 2022) aminocyclopropane-1-carboxylate (ACC) deaminase (Santos et al, 2022;Singh et al, 2022), siderophore (Upadhayay et al, 2022a,b), and ammonia (Santos et al, 2022). Production of compounds showing importance in killing pathogens such antibiotics, secretion of enzymes (chitinase, protease/elastase, cellulase, catalase, and β-(1,3)-glucanas; Duhan et al, 2022), volatile compounds (HCN; Vaghela and Gohel, 2022), and also induce systematic resistant in plants against pathogen is the important contribution of plant probiotics (Yin et al, 2022;Chaudhary et al, 2022a). In addition, the ability of plant probiotics to produce exopolysaccharides and biofilms has multiple benefits, including protection from abiotic stress (Banerjee et al, 2019) and desiccation (Mandal et al, 2022), effective root colonization (Naseem et al, 2018), and improved soil aggregation and stabilization (Jhuma et al, 2021).…”

Section: Plant Probiotics: Unraveling a Long Story In A Nutshellmentioning

confidence: 99%

Synergistic impact of nanomaterials and plant probiotics in agriculture: A tale of two-way strategy for long-term sustainability

et al. 2023

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Modern agriculture is primarily focused on the massive production of cereals and other food-based crops in a sustainable manner in order to fulfill the food demands of an ever-increasing global population. However, intensive agricultural practices, rampant use of agrochemicals, and other environmental factors result in soil fertility degradation, environmental pollution, disruption of soil biodiversity, pest resistance, and a decline in crop yields. Thus, experts are shifting their focus to other eco-friendly and safer methods of fertilization in order to ensure agricultural sustainability. Indeed, the importance of plant growth-promoting microorganisms, also determined as “plant probiotics (PPs),” has gained widespread recognition, and their usage as biofertilizers is being actively promoted as a means of mitigating the harmful effects of agrochemicals. As bio-elicitors, PPs promote plant growth and colonize soil or plant tissues when administered in soil, seeds, or plant surface and are used as an alternative means to avoid heavy use of agrochemicals. In the past few years, the use of nanotechnology has also brought a revolution in agriculture due to the application of various nanomaterials (NMs) or nano-based fertilizers to increase crop productivity. Given the beneficial properties of PPs and NMs, these two can be used in tandem to maximize benefits. However, the use of combinations of NMs and PPs, or their synergistic use, is in its infancy but has exhibited better crop-modulating effects in terms of improvement in crop productivity, mitigation of environmental stress (drought, salinity, etc.), restoration of soil fertility, and strengthening of the bioeconomy. In addition, a proper assessment of nanomaterials is necessary before their application, and a safer dose of NMs should be applicable without showing any toxic impact on the environment and soil microbial communities. The combo of NMs and PPs can also be encapsulated within a suitable carrier, and this method aids in the controlled and targeted delivery of entrapped components and also increases the shelf life of PPs. However, this review highlights the functional annotation of the combined impact of NMs and PPs on sustainable agricultural production in an eco-friendly manner.

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“…These genes are as follows: exopolysaccharides (EPSs)-related genes: EpsA, EpsE, and EpsF; drug: proton antiporter gene: cel; motility-related genes: PilQ, fliT, and motA; type three secretion system (T3SS)-related genes: AWR , PhcA, hrpB, hrcC, hrcV, hrpG, hapB, and hpaP. The methods are the same as our previous publication except that the P value correction method is Tukey [38].…”

Section: Quantitative Reverse Transcription Polymerase Chain Reaction...mentioning

confidence: 99%

Heritability of tomato rhizobacteria resistant to Ralstonia solanacearum

et al. 2022

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Background Ralstonia solanacearum (Rs) is a soilborne phytopathogen that causes bacterial wilt and substantial yield losses in many plants, such as tomatoes. A resistant tomato cultivar can recruit a beneficial microbiome from soil to resist Rs. However, whether this recruitment is inheritable from resistant parent to progeny has not been determined. Results In the present study, we investigated the rhizosphere microbiomes of tomatoes with clear kinship and different resistance against Rs. Resistant tomatoes grown with the additions of natural soil or its extract showed lower disease indexes than those grown in the sterile soil, demonstrating the importance of soil microbiome in resisting Rs. The results of 16S ribosomal RNA gene amplicon sequencing revealed that the resistant cultivars had more robust rhizosphere microbiomes than the susceptible ones. Besides, the resistant progeny HF12 resembled its resistant parent HG64 in the rhizosphere microbiome. The rhizosphere microbiome had functional consistency between HF12 and HG64 as revealed by metagenomics. Based on multi-omics analysis and experimental validation, two rhizobacteria (Sphingomonas sp. Cra20 and Pseudomonas putida KT2440) were enriched in HF12 and HG64 with the ability to offer susceptible tomatoes considerable protection against Rs. Multiple aspects were involved in the protection, including reducing the virulence-related genes of Rs and reshaping the transcriptomes of the susceptible tomatoes. Conclusions We found promising bacteria to suppress the tomato bacterial wilt in sustainable agriculture. And our research provides insights into the heritability of Rs-resistant tomato rhizobacteria, echoing the inheritance of tomato genetic material.

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Precision Probiotics in Agroecosystems: Multiple Strategies of Native Soil Microbiotas for Conquering the Competitor Ralstonia solanacearum

Cited by 7 publications

References 97 publications

Fungi beyond limits: The agricultural promise of extremophiles

Fungi beyond limits: The agricultural promise of extremophiles

Synergistic impact of nanomaterials and plant probiotics in agriculture: A tale of two-way strategy for long-term sustainability

Heritability of tomato rhizobacteria resistant to Ralstonia solanacearum

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