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Pseudomonas fluorescens and Erwinia herbicola Reduce Wilt of Grasses Caused by Xanthomonas campestris pv. graminis
Author(s) -
Schmidt Dorothea
Publication year - 1988
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1111/j.1439-0434.1988.tb01013.x
Subject(s) - biology , pseudomonas fluorescens , xanthomonas campestris , inoculation , bacterial wilt , pseudomonadaceae , xanthomonas , pseudomonadales , horticulture , botany , bacteria , pseudomonas , microbiology and biotechnology , genetics
Pseudomonas fluorescens and Erwinia herbicola were isolated from Italian ryegrass surviving to infection by Xanthomonas campestris pv. graminis. They reduced symptom expression and mortality of young ryegrass plants when inoculated simultaneously with or prior to the parasite. Protection from wilt was a quantitative effect, depending on the ratio pathogenic/non‐pathogenic bacteria: it was good with 1/99, less with 10/90 and moderate to low with 50/50. The effect of preinoculation by leaf‐clipping with scissors contaminated by P. fluorescens or E. herbicola could be detected at least seven days after clipping and at a distance of 2 cm below the clipping level. Preinoculation of roots, or stem bases did not protect the plants from leaf infection by the parasite.