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Plant Growth-Promoting Activity of Pseudomonas aeruginosa FG106 and Its Ability to Act as a Biocontrol Agent against Potato, Tomato and Taro Pathogens

Ghadamgahi, Farideh and Tarighi, Saeed and Taheri, Parissa and Saripella, Ganapathi Varma and Anzalone, Alice and Kalyandurg, Pruthvi Balachandra and Catara, Vittoria and Ortiz, Rodomiro and Vetukuri, Ramesh (2022). Plant Growth-Promoting Activity of Pseudomonas aeruginosa FG106 and Its Ability to Act as a Biocontrol Agent against Potato, Tomato and Taro Pathogens. Biology. 11 :1 , 140
[Research article]

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Abstract

Simple Summary Microbial bio-stimulants are attracting increasing attention in agricultural research. In particular, plant growth-promoting rhizobacteria (PGPR) have great potential to improve crops' productivity and tolerance of biotic and abiotic stresses. It is anticipated that PGPR could eventually replace synthetic fungicides in agriculture. This research evaluated Pseudomonas aeruginosa strain FG106-which was isolated from tomato plants- as a potential biocontrol agent against several plant pathogens. This strain displayed multiple plant growth-promoting attributes and high in vitro and in vivo inhibition of growth and pathogenicity of tested phytopathogens. It is thus a multifunctional PGPR with potential applications as a biocontrol agent to control fungal and bacterial pathogens. P. aeruginosa strain FG106 was isolated from the rhizosphere of tomato plants and identified through morphological analysis, 16S rRNA gene sequencing, and whole-genome sequencing. In vitro and in vivo experiments demonstrated that this strain could control several pathogens on tomato, potato, taro, and strawberry. Volatile and non-volatile metabolites produced by the strain are known to adversely affect the tested pathogens. FG106 showed clear antagonism against Alternaria alternata, Botrytis cinerea, Clavibacter michiganensis subsp. michiganensis, Phytophthora colocasiae, P. infestans, Rhizoctonia solani, and Xanthomonas euvesicatoria pv. perforans. FG106 produced proteases and lipases while also inducing high phosphate solubilization, producing siderophores, ammonia, indole acetic acid (IAA), and hydrogen cyanide (HCN) and forming biofilms that promote plant growth and facilitate biocontrol. Genome mining approaches showed that this strain harbors genes related to biocontrol and growth promotion. These results suggest that this bacterial strain provides good protection against pathogens of several agriculturally important plants via direct and indirect modes of action and could thus be a valuable bio-control agent.

Authors/Creators:Ghadamgahi, Farideh and Tarighi, Saeed and Taheri, Parissa and Saripella, Ganapathi Varma and Anzalone, Alice and Kalyandurg, Pruthvi Balachandra and Catara, Vittoria and Ortiz, Rodomiro and Vetukuri, Ramesh
Title:Plant Growth-Promoting Activity of Pseudomonas aeruginosa FG106 and Its Ability to Act as a Biocontrol Agent against Potato, Tomato and Taro Pathogens
Series Name/Journal:Biology
Year of publishing :2022
Volume:11
Number:1
Article number:140
Number of Pages:27
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
Keywords:bacterial endophytes, biocontrol, bio-stimulants, plant growth, strain FG106
URN:NBN:urn:nbn:se:slu:epsilon-p-115457
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-115457
Additional ID:
Type of IDID
DOI10.3390/biology11010140
Web of Science (WoS)000746523400001
Otherhttps://www.mdpi.com/2079-7737/11/1/140
Alternative URL:https://www.mdpi.com/2079-7737/11/1/140
ID Code:27202
Faculty:LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap
Department:(LTJ, LTV) > Department of Plant Breeding (from 130101)
Deposited By: SLUpub Connector
Deposited On:24 Feb 2022 16:25
Metadata Last Modified:24 Feb 2022 16:31

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