TABLE 1.

S. meliloti strains used in this work

StrainDescription or genotypeReference or source
RM1021WT strain, Su 47 derivative; Smr
R874Sm1021 katC::Neor26
R326Sm1021 sodB::Tetr26
R815SM1021 sodC::Gmr26
R641SM1021 rpoE2::Gmr26
R356SM1021 hfq-lacZ-Gmr8a
R6021021 rpoE1::′uidA-Kanr rpoE1+This study
R6351021 rpoE2::′uidA-Neor rpoE2+This study
R6051021 rpoE3::′uidA-Kanr rpoE3+This study
R5621021 rpoE4::′uidA-Kanr rpoE4+This study
R603R356 rpoE1::′uidA-Kanr rpoE1+This study
R671R356 rpoE2::′uidA-Kanr rpoE2+This study
R672R356 rpoE3::′uidA-Kanr rpoE3+This study
R673R356 rpoE4::′uidA-Kanr rpoE4+This study