@misc{10481/60590,
year = {2019},
month = {12},
url = {http://hdl.handle.net/10481/60590},
abstract = {Increasing world food demand together with soil erosion and indiscriminate use of
chemical fertilization highlight the need to adopt sustainable crop production strategies. In this context,
a combination of plant growth-promoting rhizobacteria (PGPR) and pathogen management represents
a sustainable and effcient alternative. Though little studied, halophilic and halotolerant PGPR could
be a beneficial plant growth promotion strategy for saline and non-saline soils. The virulence of
many bacterial phytopathogens is regulated by quorum sensing (QS) systems. Quorum quenching
(QQ) involves the enzymatic degradation of phytopathogen-generated signal molecules, mainly
N-acyl homoserine lactones (AHLs). In this study, we investigate plant growth-promoting (PGP)
activity and the capacity of the halotolerant bacterium Staphylococcus equorum strain EN21 to attenuate
phytopathogens virulence through QQ.We used biopriming and in vivo tomato plant experiments to
analyse the PGP activity of strain EN21. AHLinactivation was observed to reduce Pseudomonas syringae
pv. tomato infections in tomato and Arabidopsis plants. Our study of Dickeya solani, Pectobacterium
carotovorum subsp. carotovorum and Erwinia amylovora bacteria in potato tubers, carrots and pears,
respectively, also demonstrated the effectiveness of QS interruption by EN21. Overall, this study
highlights the potential of strain S. equorum EN21 in plant growth promotion and QQ-driven bacterial
phytopathogen biocontrol.},
organization = {The study was funded by the Ramón y Cajal MINECO program (RYC-2014-15532) in Spain},
publisher = {MDPI},
keywords = {Staphylococcus equorum strain EN21},
keywords = {Halotolerant bacterium},
keywords = {Bacterial phytopathogen},
keywords = {PGPR},
keywords = {Quorum sensing},
keywords = {Quorum quenching},
keywords = {Communication silencing},
title = {Silencing of Phytopathogen Communication by the Halotolerant PGPR Staphylococcus Equorum Strain EN21},
doi = {10.3390/microorganisms8010042},
author = {Vega, Clara and Rodríguez González, Miguel Ángel and Llamas Company, Inmaculada and Béjar Luque, María Victoria and Sampedro Quesada, María Inmaculada},
}