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Phaseolotoxin production by Pseudomonas syringae pv. phaseolicola: The influence of temperature

✍ Scribed by Dr. Jörg Nüske; Wolfgang Fritsche

Publisher
John Wiley and Sons
Year
1989
Tongue
English
Weight
308 KB
Volume
29
Category
Article
ISSN
0233-111X

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✦ Synopsis

Phaseolotoxin (N-sulphodiaminophosphinyl-ornithyl-alanyl-homoarginine) is a phytotoxic secondary metabolite produced by Pseudomonas syringae pv. phaseolicola. The production of the phytotoxin is strongly regulated by temperature. The optimal temperature for phaseolotoxin production is 18 "C. Temperatures in the range between 18 "C and 30 "C inhibit the production of phaseolotoxin in an increasing manner. By temperature shift experiments and the inhibition of protein synthesis by chloramphenicol it was demonstrated, that the synthesis of enzymes related to toxin synthesis and not the regulation of the activity of the responsible enzyme system is affected by higher temperatures.

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