Endophytic Pseudomonads and Their Metabolites

Bajpai, Apekcha; Johri, B. N.

doi:10.1007/978-3-319-76900-4_8-1

Cited by 1 publication

(1 citation statement)

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“…Furthermore, these microorganisms are involved in phytoremediation processes because they play a vital role in degradation of petroleum hydrocarbons as well as other mono-and polycyclic aromatic hydrocarbons, which is enhanced by their ability to produce biosurfactants (e.g., rhamnolipid) [20]. Until now, over 200 species of the Pseudomonas genus have been described [21] and a number of them have been classified as Pseudomonas fluorescens.…”

Section: Introductionmentioning

confidence: 99%

Genome Mining and Evaluation of the Biocontrol Potential of Pseudomonas fluorescens BRZ63, a New Endophyte of Oilseed Rape (Brassica napus L.) against Fungal Pathogens

Chlebek

Piński

Żur

et al. 2020

IJMS

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Endophytic bacteria hold tremendous potential for use as biocontrol agents. Our study aimed to investigate the biocontrol activity of Pseudomonas fluorescens BRZ63, a new endophyte of oilseed rape (Brassica napus L.) against Rhizoctonia solani W70, Colletotrichum dematium K, Sclerotinia sclerotiorum K2291, and Fusarium avenaceum. In addition, features crucial for biocontrol, plant growth promotion, and colonization were assessed and linked with the genome sequences. The in vitro tests showed that BRZ63 significantly inhibited the mycelium growth of all tested pathogens and stimulated germination and growth of oilseed rape seedlings treated with fungal pathogens. The BRZ63 strain can benefit plants by producing biosurfactants, siderophores, indole-3-acetic acid (IAA), 1-aminocyclopropane-1-carboxylate (ACC) deaminase, and ammonia as well as phosphate solubilization. The abilities of exopolysaccharide production, autoaggregation, and biofilm formation additionally underline its potential to plant colonization and hence biocontrol. The effective colonization properties of the BRZ63 strain were confirmed by microscopy observations of EGFP-expressing cells colonizing the root surface and epidermal cells of Arabidopsis thaliana Col-0. Genome mining identified many genes related to the biocontrol process, such as transporters, siderophores, and other secondary metabolites. All analyses revealed that the BRZ63 strain is an excellent endophytic candidate for biocontrol of various plant pathogens and plant growth promotion.

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Section: Introductionmentioning

confidence: 99%