Motility and biofilm production involved in the interaction of phosphate solubilizing endophytic strains with peanut, maize and soybean plants

LUCERO, CINTHIA TAMARA; LORDA, GRACIELA SUSANA; LUDUEÑA, LILIANA MERCEDES; ANZUAY, MARÍA SOLEDAD; TAURIAN, TANIA

Rhizosphere

ELSEVIER

Año: 2020

2452-2198

Endophytic plant growth promoting bacteria are ofgreat interest since the ability to colonize the internal tissues of plantsgives it an adaptive advantage. To confer any beneficial effect on the plant, bacteriamust present a successful colonization and thus be competent in the rhizosphereand finally infect internal tissues. In thissense, bacterial motility is an essential property involved inplant-microorganism interaction where bacteria can colonize the root and at thesame time form biofilms. Withinplant beneficial bacteria those that present phosphate solubilizing activityare of great interest due to the contribution of phosphorus to plants. The objective of this work was to evaluate the motility and biofilmformation properties of the strains Serratiasp. S119 and Enterobacter sp. J49growing in the presence of peanut, maize and soybean root exudates. Resultsobtained indicated that both strains have flagella, possess swimming, swarmingand twitching motilities and showed differential chemotactic attraction againstroot exudates. In addition, the strains under study showed the ability to formbiofilms, being this ability greater in minimal media, in which a greaterdecrease was also seen by the addition of root exudates in the first hours ofgrowth. The changesproduced by the addition of root exudates in the chemotaxis and biofilmformation of the strains suggests that compounds released by the plants aredetected by these bacteria and could be part of the molecular dialogue involvedin their interaction with the roots of plant.