6533b82cfe1ef96bd129005a

RESEARCH PRODUCT

Pythium perplexum isolated from soil in France: morphology, molecular characterisation and biological control.

Delphine GallandBernard Paul

subject

SerratiabiologyBase SequenceDamping offMolecular Sequence DataBiological pest controlPythiumSequence Analysis DNAbiology.organism_classificationMicrobiologyBotanyAntibiosisDNA Ribosomal SpacerPythiumFranceInternal transcribed spacerCucumis sativusPhycomycetesPest Control BiologicalRibosomal DNACucurbitaceaeBacteriaSoil MicrobiologyPlant Diseases

description

Pythium perplexum (F-926) was isolated from a soil sample taken in the Burgundy region in France. In 1907, it was mistakenly described by Bulter as P. vexans. Despite morphological resemblance, the comparison between the internal transcribed spacer 1 regions of the ribosomal DNA of the two fungi leaves no doubt of their different identities. P. perplexum was found to be highly pathogenic to cucumber seedlings. Damping-off disease of cucumber caused by P. perplexum can effectively be controlled by using the soil bacterium Serratia plymuthica (B-781). The details of the morphology and the molecular characterisation of P. perplexum and its biological control with S. plymuthica are described here.

10.1078/0944-5013-00101https://pubmed.ncbi.nlm.nih.gov/11572459