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Variation in Colony Characteristics and Symbiotic Effectiveness of Rhizobium
Author(s) -
HERRIDGE D. F.,
ROUGHLEY R. J.
Publication year - 1975
Publication title -
journal of applied bacteriology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.889
H-Index - 156
eISSN - 1365-2672
pISSN - 0021-8847
DOI - 10.1111/j.1365-2672.1975.tb00495.x
Subject(s) - biology , rhizobium , colony morphology , symbiosis , breed , colony forming unit , gram , microbiology and biotechnology , bacteria , genetics
Seventeen cultures of Rhizobium CB756 varied in symbiotic effectiveness and contained a number of different colony types. An examination of single colony isolates from one culture of CB756 indicated that colony characteristics of most isolates were unstable and did not breed true. There was a relationship between symbiotic effectiveness and colony type of the original isolate. The 3 most ineffective sub‐strains were all isolated from large, gummy colonies whereas the most effective were isolated from pinpoint, dry colonies.