Antagonistic compounds from controversial bacteria with suppressing effects on the diseases caused by Phytophthora cinnamomi

MAGUIRE, VANINA GISEL; RUIZ, OSCAR ADOLFO; COLAVOLPE, MARÍA BELÉN; COSTA, AUGUSTA; SILVA, MÁRCIA DE CASTRO; VIDEIRA E CASTRO, ISABEL

Archives of Phytopathology and Plant Protection

Taylor and Francis

Lugar: Gales; Año: 2020 vol. 53 p. 70 - 81

0323-5408

This work focuses on the importance of considering thebio-substances evaluation of controversial strains againstplant pathogens. The bacterial population of plant rhizosphere covers every type of plant?microbe interaction.Some of them have beneficial effects on plant growth andshowed antagonistic activities against plant pathogens. Thedistribution of the Burkholderia genus is wide in soils, andmany bacterial strains were proven to benefit and protectimportant crops from pathogen threats. In this study, it waspossible to obtain a Burkholderia cenocepacia isolate fromthe rhizosphere soil of a leguminous plant. It was screenedin vitro for its abilities to protect Trifolium subterraneum L.from Phytophthora cinnamomi. The current results revealedthat plants enhanced the growth in plants inoculated withboth, the bacterial strain and the pathogen probablybecause the bacteria produced antagonistic compoundssuch as hydrolytic enzymes. This report shows the potentialability of a rhizobacterium naturally existing in the soils tosuppress the effects of the diseases caused byP. cinnamomi