Versatility of Stenotrophomonas maltophilia: Ecological roles of RND efflux pumps

Chauviat, Amandine; Meyer, Thibault De; Favre-Bonté, Sabine

doi:10.1016/j.heliyon.2023.e14639

Cited by 9 publications

(4 citation statements)

References 334 publications

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“…One of the common genera associated with maize plants is Stenotrophomonas sp., which has a wide range of metabolic capabilities and can survive under a variety of environmental conditions [37]. Some species of Stenotrophomonas have been found to be plant growthpromoting bacteria that can increase the growth and yield of crops such as maize.…”

Section: Discussionmentioning

confidence: 99%

“…Stenotrophomonas rhizophila is another bacterial species known to promote plant growth, and it has been found in the endobiomes of several plant species, including corn. Some strains of Stenotrophomonas rhizophila produce plant hormones and enzymes that can stimulate root growth and plant development [37]. Plant growth-promoting properties have also been observed in some Ralstonia species, such as the production of plant hormones and enzymes that stimulate root growth and nutrient uptake.…”

Section: Discussionmentioning

confidence: 99%

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Diversity of the Maize Root Endosphere and Rhizosphere Microbiomes Modulated by the Inoculation with Pseudomonas fluorescens UM270 in a Milpa System

Rojas-Sánchez,

Castelán-Sánchez,

Garfias-Zamora

et al. 2024

Plants

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Milpa is an agroecological production system based on the polyculture of plant species, with corn featuring as a central component. Traditionally, the milpa system does not require the application of chemicals, and so pest attacks and poor growth in poor soils can have adverse effects on its production. Therefore, the application of bioinoculants could be a strategy for improving crop growth and health; however, the effect of external inoculant agents on the endemic microbiota associated with corn has not been extensively studied. Here, the objective of this work was to fertilize a maize crop under a milpa agrosystem with the PGPR Pseudomonas fluorescens UM270, evaluating its impact on the diversity of the rhizosphere (rhizobiome) and root endophytic (root endobiome) microbiomes of maize plants. The endobiome of maize roots was evaluated by 16S rRNA and internal transcribed spacer region (ITS) sequencing, and the rhizobiome was assessed by metagenomic sequencing upon inoculation with the strain UM270. The results showed that UM270 inoculation of the rhizosphere of P. fluorescens UM270 did not increase alpha diversity in either the monoculture or milpa, but it did alter the endophytic microbiome of maize plant roots by stimulating the presence of bacterial operational taxonomic units (OTUs) of the genera Burkholderia and Pseudomonas (in a monoculture), whereas, in the milpa system, the PGPR stimulated greater endophytic diversity and the presence of genera such as Burkholderia, Variovorax, and N-fixing rhizobia genera, including Rhizobium, Mesorhizobium, and Bradyrhizobium. No clear association was found between fungal diversity and the presence of strain UM270, but beneficial fungi, such as Rizophagus irregularis and Exophiala pisciphila, were detected in the Milpa system. In addition, network analysis revealed unique interactions with species such as Stenotrophomonas sp., Burkholderia xenovorans, and Sphingobium yanoikuyae, which could potentially play beneficial roles in the plant. Finally, the UM270 strain does not seem to have a strong impact on the microbial diversity of the rhizosphere, but it does have a strong impact on some functions, such as trehalose synthesis, ammonium assimilation, and polyamine metabolism. The inoculation of UM270 biofertilizer in maize plants modifies the rhizo- and endophytic microbiomes with a high potential for stimulating plant growth and health in agroecological crop models.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Diversity of the Maize Root Endosphere and Rhizosphere Microbiomes Modulated by the Inoculation with Pseudomonas fluorescens UM270 in a Milpa System

Rojas-Sánchez,

Castelán-Sánchez,

Garfias-Zamora

et al. 2024

Plants

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“…Additionally, some RND pumps are involved in the efflux of chloramphenicol, tetracycline, macrolides, quinolones, sulfamethoxazole, trimethoprim, and trimethoprim–sulfamethoxazole ( Alonso and Martínez, 2000 ; Sánchez and Martínez, 2018 ; Wu et al, 2019 ). The contribution of pumps to antimicrobial resistance is considered in detail in some comprehensive reviews (e.g., Menetrey et al, 2021 ; Chauviat et al, 2023 ).…”

Section: Efflux Pumps and Virulencementioning

confidence: 99%

Stenotrophomonas maltophilia virulence: a current view

Mikhailovich,

Heydarov,

Zimenkov

et al. 2024

Front. Microbiol.

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Stenotrophomonas maltophilia is an opportunistic pathogen intrinsically resistant to multiple and broad-spectrum antibiotics. Although the bacterium is considered a low-virulence pathogen, it can cause various severe diseases and contributes significantly to the pathogenesis of multibacterial infections. During the COVID-19 pandemic, S. maltophilia has been recognized as one of the most common causative agents of respiratory co-infections and bacteremia in critically ill COVID-19 patients. The high ability to adapt to unfavorable environments and new habitat niches, as well as the sophisticated switching of metabolic pathways, are unique mechanisms that attract the attention of clinical researchers and experts studying the fundamental basis of virulence. In this review, we have summarized the current knowledge on the molecular aspects of S. maltophilia virulence and putative virulence factors, partially touched on interspecific bacterial interactions and iron uptake systems in the context of virulence, and have not addressed antibiotic resistance.

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“…Stenotrophomonas rhizophila is another bacterial species known to promote plant growth and has been found in the endobiomes of several plant species, including corn. Some strains of Stenotrophomonas rhizophila produce plant hormones and enzymes that can stimulate root growth and plant development (Chauviat et al 2023). Plant growth-promoting properties have also been found in some Ralstonia species, such as the production of plant hormones and enzymes that stimulate root growth and nutrient uptake.…”

Section: )mentioning

confidence: 99%

Inoculation withPseudomonas fluorescensUM270 alters the maize root-associated endobiome and interacting networks in a milpa model

Rojas-Sánchez

Castelán-Sánchez

Santoyo

2023

Preprint

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The traditional milpa system is a polyculture originating in Mesoamerica, whose core is maize (Zea mays L.), associated with squash (Cucurbita spp.) and beans (Phaseolus vulgaris L.). In recent years, milpa-type crops have decreased owing to climate change, rapid population growth, and the excessive use of agrochemicals; therefore, the application of plant growth-promoting rhizobacteria (PGPR) to counteract these negative effects has been little explored. In this study, a maize crop in a milpa system was fertilized with the PGPR Pseudomonas fluorescens UM270, and the endophytic root microbiome (endobiome) of maize was assessed by 16S rRNA and internal transcribed spacer regions (ITS) sequencing. The results showed that UM270 the rhizosphere inoculation of P. fluorescens UM270 did not increase alpha diversity in either monoculture or the milpa, but it did alter the endophytic microbiome of maize plant roots by stimulating the presence of bacterial operational taxonomic units (OTUs) of the genera Burkholderia and Pseudomonas (in a monoculture), whereas in the milpa system, the PGPR stimulated a greater endophytic diversity and the presence of genera such as Burkholderia, Variovorax, and N-fixing rhizobia genera, including Rhizobium, Mesorhizobium and Bradyrhizobium. No clear association was found between fungal diversity and the presence of strain UM270, but beneficial fungi such as Rizophagus irregularis and Exophiala pisciphila were detected in the milpa system. In addition, network analysis revealed unique interactions with species like Stenotrophomonas sp., Burkholderia xenovorans, and Sphingobium yanoikuyae, which would potentially be playing a beneficial role with the plant. To the best of our knowledge, this is the first study in which the root microbiome of maize growing under a milpa model was assessed by bio-inoculation with PGPRs.

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Versatility of Stenotrophomonas maltophilia: Ecological roles of RND efflux pumps

Cited by 9 publications

References 334 publications

Diversity of the Maize Root Endosphere and Rhizosphere Microbiomes Modulated by the Inoculation with Pseudomonas fluorescens UM270 in a Milpa System

Diversity of the Maize Root Endosphere and Rhizosphere Microbiomes Modulated by the Inoculation with Pseudomonas fluorescens UM270 in a Milpa System

Stenotrophomonas maltophilia virulence: a current view

Inoculation withPseudomonas fluorescensUM270 alters the maize root-associated endobiome and interacting networks in a milpa model

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