Physiologic races of the crown gall organism in Britain

Wormald, H.

doi:10.1016/s0007-1536(45)80027-x

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1969

1981

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Cited by 4 publications

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“…It has long been recognized that the A . tumefaciens consists of at least three or four kinds of organisms morphologically similar, but differing in their pathogenicity, nutritional and biochemical properties (Wormald 1945). The basis for separating the species into races has always been controversial.…”

Section: Discussionmentioning

confidence: 99%

Biotypes of Agrobacterium tumefaciens in Hungary

Süle

1978

Journal of Applied Bacteriology

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Isolates of Agrobacterium tumefaciens from Hungary were separated into three biotypes on the basis of their physiological characters. Biotypes 1 and 2 corresponded with those of Keane et al. (1970). The most common isolates were of biotype 2. Isolates from grapevines formed a separate biotype which might be distinguished from biotype 1 by D‐(–)tartrate and malonate utilization. Many isolates with biotype‐intermediate characters were found. Isolates utilizing D‐(–)tartrate, erythritol and malonate were included into biotype 2, although many of them were 3–ketolactose positive. Biotypes were not separated geographically and biotype 1 and 2 apparently occurred together.

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Section: Discussionmentioning

confidence: 99%