Back
Full-text
Journal article

Extracellular Protease of Pseudomonas fluorescens CHA0, a Biocontrol Factor with Activity against the Root-Knot Nematode Meloidogyne incognita

  • Siddiqui, Imran Ali Soil Biology and Ecology Laboratory, Department of Botany, University of Karachi, Karachi-75270, Pakistan
  • Haas, Dieter Département de Microbiologie Fondamentale, Université de Lausanne, CH-1015 Lausanne, Switzerland
  • Heeb, Stephan Département de Microbiologie Fondamentale, Université de Lausanne, CH-1015 Lausanne, Switzerland
Published in:
  • Applied and Environmental Microbiology. - American Society for Microbiology. - 2005, vol. 71, no. 9, p. 5646-5649
Biotechnology
Food Science
Ecology
Applied Microbiology and Biotechnology
English ABSTRACT
In Pseudomonas fluorescens CHA0, mutation of the GacA-controlled aprA gene (encoding the major extracellular protease) or the gacA regulatory gene resulted in reduced biocontrol activity against the root-knot nematode Meloidogyne incognita during tomato and soybean infection. Culture supernatants of strain CHA0 inhibited egg hatching and induced mortality of M. incognita juveniles more strongly than did supernatants of aprA and gacA mutants, suggesting that AprA protease contributes to biocontrol.
Language
  • English
Open access status
bronze
Identifiers
Persistent URL
https://sonar.ch/global/documents/145174
Statistics
Document views: 21 File downloads:
  • fulltext.pdf: 0