Laboratory of Plant Protection and Biotechnology, Intercollegiate Faculty of Biotechnology of University of Gdansk and Medical University of Gdansk, Kladki 24, 80-822 Gdansk, Poland.The selected rhizobacteria warrant additional study as potential BCAs for the control of soft rot. Significantly, the efficacy of some BCAs of both groups differed among pathogen species and pathogen strain within species. The AHL-inactivating isolates of group II were active against a broad spectrum of both Dickeya spp. of aerobic endospore-forming bacteria as candidate biocontrol agents against. on potato slices, group I isolates were highly effective on chicory leaves, which indicates that the host plant is an important criterion in the selection of BCAs against Dickeya spp. Bacterial-based biocontrol of soil-borne phytopathogens has gained. Despite the poor efficacy against Dickeya spp. strains, the ability to cause antibiosis in vitro did not guarantee the ability to suppress disease in planta. Although most group I isolates suppressed maceration of potato tuber slices by Pectobacterium spp. Biological control represents a promising strategy to reduce or complement the use of chemical. The 18 antagonists, all identified as Pseudomonas or Bacillus, were further characterised for motility, production of siderophores, and biosurfactants. actinidiae (Psa), the causal agent of kiwifruit bacterial canker. A study was undertaken with the aim of isolating AEFB from the cucurbit phylloplane for evaluation as potential antagonists of cucurbit powdery mildew using various screening approaches.
were also screened by PCR for the presence of the aiiA gene, and this report is the first to document the presence of this gene in Bacillus simplex. When embarking upon biocontrol agent selection, multifaceted screening strategies are crucial.
Out of 1165 rhizobacteria screened, 18 potential BCAs were selected on the basis of their in vitro ability to inhibit the growth (antibiosis) of at least one pathogenic strain (group I) or to inactivate acyl-homoserine lactones (AHLs) involved in the quorum sensing of Pectobacterium spp. harzianum are commercially registered for usage against soil borne plant pathogens mostly as a seed treatment or soil application. In India, two species of Trichoderma i.e., T. Abstract In vitro screening was used to select potential biological control agents (BCAs) against soft rot caused by Pectobacterium and Dickeya spp. These biocontrol agents have proved their antagonistic ability in laboratory tests and field trials.
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