Activity of plant growth promoting rhizobacteria (PGPRs) in the biocontrol of tomato Fusarium wilt

Lamia Boukerma, Messaoud Benchabane, Ahmed Charif and Lakhdar Khélifi
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Lamia Boukerma: Biological Sciences, South Dakota State University, Brookings, USA
Messaoud Benchabane: Laboratory of Protection and Valorisation of Agro-Biological Resources. Saad Dahleb University, Blida, Algeria
Ahmed Charif: Department of Plant Science, College of Agriculture &
Lakhdar Khélifi: Biological Sciences, South Dakota State University, Brookings, USA

Plant Protection Science, 2017, vol. 53, issue 2, 78-84

Abstract: The potential of Pseudomonas fluorescens PF15 and Pseudomonas putida PP27 to protect tomato plants against Fusarium wilt under greenhouse conditions was evaluated. In vitro antagonism showed a significant inhibition of the pathogen growth (47%) revealed by PF15. However, PP27 presented a 10% rate of the mycelium inhibition. An in situ experiment was conducted with split-root design for induced systemic resistance (ISR) and without split-root design to measure both ISR and antagonistic activities. Fluorescent Pseudomonas revealed a delay in the onset of symptoms and slower kinetics of disease progression compared to the pathogen control. McKinney's index, which measures the severity of the disease, was reduced by 37-72%, and the levels of infection (incidence) by 7-36%.

Keywords: Pseudomonas fluorescens PF15; Pseudomonas putida PP27; Fusarium oxysporum f.sp. lycopersici; Induced Systemic Resistance (search for similar items in EconPapers)
Date: 2017
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpps:v:53:y:2017:i:2:id:178-2015-pps

DOI: 10.17221/178/2015-PPS

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