Crown galls induced by octopine-degrading biotype 3 strains of Agrobacterium tumefaciens contain a new form of lysopine dehydrogenase

L. Otten, E. Szegedi

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9 Citations (Scopus)


Extracts of crown gall tumours induced on Kalanchoe daigremontiana by the biotype 3 strains AB-3, AT-6 and Hm-1 were compared with extracts of tumours induced by the wide host range octopine strain B6S3 for their ability to convert lysine, arginine, histidine and methionine into the corresponding opines: lysopine, octopine, histopine and methiopine. In contrast to B6S3 tumour extracts which readily converted all precursors into opines, extracts of tumour tissue induced by biotype 3 strains produced mainly lysopine and octopine. It can therefore be concluded that the enzymes found in tumours induced by AB-3, AT-6 and Hm-1 are different from the well-known lysopine dehydrogenase from B6S3 tumours.

Original languageEnglish
Pages (from-to)81-85
Number of pages5
JournalPlant Science
Issue number2
Publication statusPublished - Aug 23 1985



  • agrobacterium
  • crown gall
  • opines

ASJC Scopus subject areas

  • Genetics
  • Agronomy and Crop Science
  • Plant Science

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