Plant and Soil

, Volume 51, Issue 1, pp 19–26 | Cite as

Factors affecting ethylene production by some plant pathogenic bacteria

  • B. T. Swanson
  • H. F. Wilkins
  • B. W. Kennedy


Methionine, up to 10−3M, added to a basal medium enhanced bacterial ethylene production in 14 of the 20 bacteria tested. The effects of substrate, cofactors, light, and temperature on ethylene production byPseudomonas solanacearum #25 revealed that the greatest effect occurred when 10−5M methionine and 10−4M FMN were combined, from which 4.10μl/l of ethylene were produced. Higher levels of methionine resulted in production of high levels of non-enzymically produced ethylene and death of the bacteria. This non-enzymic production of ethylene was eliminated in the dark. Copper had no effect upon ethylene production. Twenty-nine and 35°C were inhibitory, whereas 19°C appeared to be near optimum for ethylene production.Pseudomonas solanacaerum #25 and some other bacteria are capable of ethylene production and methionine and FMN enhance this production.

Key Words

Bacteria Cofactors Copper Ethylene FMN Light Methionine Plant pathogens Pseudomonas Substrate Temperature 


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Copyright information

© Martinus Nijhoff, The Hague 1979

Authors and Affiliations

  • B. T. Swanson
    • 1
  • H. F. Wilkins
    • 1
  • B. W. Kennedy
    • 2
  1. 1.Department of Horticultural ScienceUniversity of MinnesotaSt. Paul
  2. 2.Plant Pathology DepartmentUniversity of MinnesotaSt. Paul

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