Table 4

Transfer frequency of self-transmissible and symbiotic plasmids a

Donor

Relevant genotype

Transfer Frequencyb


STPc

pSym


CFN42

wild type R. etli

10-2

10-6

CFNX195

CFN42 derivative: pRet42a-, pRet42d::Tn5mob

-d

NDe

GR64

wild type S. fredii

10-1

10-4

GR64-2

GR64/pSfr64a-, pSfr64b::Tn5mob

-

ND

GR64-3

GR64-2/pRet42a::Tn5-GDYN

ND

ND

GR64-5

GR64/pSfr64a-, pSfr64b-, pRet42a::Tn5-GDYN

ND

-

GR64-6

GR64/pSfr64a-, pSfr64b-, pSfr64a::Tn5-GDYN

10-1

-

CFN2001-1

CFN2001/pSfr64b::Tn5mob

-

ND

CFN2001-2

CFN2001-1/pRet42a::Tn5-GDYN

10-4

10-6

CFN2001-3

CFN2001-1/pSfr64a::Tn5-GDYN

ND

ND


a Strain GMI9023 was used as receptor. All crosses were repeated at least three times.

b Expressed as the number of transconjugants per donor.

c STP: Self Transmissible Plasmid

d Not done

e not detected (transfer frequency <10-9).

Cervantes et al. BMC Microbiology 2011 11:149   doi:10.1186/1471-2180-11-149

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