Azorhizobium 12 claims

genus · family Xanthobacteraceae · bacterium · NCBI Taxonomy ↗

2 spellings

AzorhizobiumTony Rebelo · CC BY-SA 4.0 · iNaturalist ↗

12 claims

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Observationobservedoriginal resultmeasured

Claim · model-written summary

No hybridization signal was found in the other listed genera.

Taxon: Mesorhizobium, Bradyrhizo-bium, Azorhizobium, and AgrobacteriumAzorhizobiumAgrobacteriumBradyrhizobiumMesorhizobiume0
Outcome: no hybridization signale0

Verbatim

e0
“no hybridization signal was detected in species from the Mesorhizobium, Bradyrhizo-bium, Azorhizobium, and Agrobacterium genera”
✓ located verbatim in the source · abstract, characters 424–551

Title

Conservation of noIR in the Sinorhizobium and Rhizobium Genera of the Rhizobiaceae Family

Ernö Kiss; Peter Mergaert; Boglàrka Olàh; et al. Molecular Plant-Microbe Interactions 1998. doi:10.1094/mpmi.1998.11.12.1186

Other claims from this paper (6)

Observation NolR function occurs in other Rhizobiaceae species.
Observation nolR homologous sequences were detected in Rhizobium and Sinorhizobium.
Mechanism The TOM nolR gene represses nodABCIJ and nodD expression.
Mechanism nolR repression decreased Nod factor production.
Association Functional nolR correlates with increased rate and extent of pea nodulation.
Observation NolR was placed in a family of small bacterial regulatory proteins.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

The cytbd single mutant fixed nitrogen at 70 to 90% of wild-type rates under 2% oxygen.

Taxon: AzorhizobiumAzorhizobiume0
Treatment: cytbd-e0
Outcome: fixed N2e0
Direction: lowerinferrede0
Value: 70 to 90%e0
Qualifier: 2% O2 atmospheree0
Comparator: wild-typee0

Verbatim

e0
“In aerobic culture under 2% O2 atmosphere, Azorhizobium cytbd- and cytcbb3- single mutants both fixed N2 at 70 to 90% of wild-type rates”
✓ located verbatim in the source · abstract, characters 485–621

Title

Azorhizobium caulinodans uses both cytochrome bd (quinol) and cytochrome cbb3 (cytochrome c) terminal oxidases for symbiotic N2 fixation

P A Kaminski; C L Kitts; Z Zimmerman; et al. Journal of Bacteriology 1996. doi:10.1128/jb.178.20.5989-5994.1996

Other claims from this paper (11)

Observation Both bacterial oxidase mutations were null alleles.
Intervention effect The cytcbb3 single mutant fixed nitrogen at 70 to 90% of wild-type rates under 2% oxygen.
Intervention effect Double mutants completely lacked symbiotic nitrogen fixation.
Mechanism Both oxidases drive respiration during symbiotic nitrogen fixation at nanomolar oxygen.
Intervention effect Double mutants fixed nitrogen at 70% of wild-type rates in culture under 2% oxygen.
Mechanism Residual nitrogen fixation presumably reflects other terminal oxidase activities.
Observation cytbd oxidase maintained dissolved oxygen at 3.6 microM.
Observation cytcbb3 oxidase depleted oxygen to submicromolar levels.
Mechanism cytcbb3 activity disproportionately supported microaerobic growth.
Observation cytbd oxidase was inactive below 3.6 microM dissolved oxygen in oxygen-limited culture.
Mechanism Both oxidases seem to contribute equally in Sesbania nodules at 10 to 20 nM oxygen.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

The cytcbb3 single mutant fixed nitrogen at 70 to 90% of wild-type rates under 2% oxygen.

Taxon: AzorhizobiumAzorhizobiume0
Treatment: cytcbb3-e0
Outcome: fixed N2e0
Direction: lowerinferrede0
Value: 70 to 90%e0
Comparator: wild-typee0

Verbatim

e0
“In aerobic culture under 2% O2 atmosphere, Azorhizobium cytbd- and cytcbb3- single mutants both fixed N2 at 70 to 90% of wild-type rates”
✓ located verbatim in the source · abstract, characters 485–621

Title

Azorhizobium caulinodans uses both cytochrome bd (quinol) and cytochrome cbb3 (cytochrome c) terminal oxidases for symbiotic N2 fixation

P A Kaminski; C L Kitts; Z Zimmerman; et al. Journal of Bacteriology 1996. doi:10.1128/jb.178.20.5989-5994.1996

Other claims from this paper (11)

Observation Both bacterial oxidase mutations were null alleles.
Intervention effect The cytbd single mutant fixed nitrogen at 70 to 90% of wild-type rates under 2% oxygen.
Intervention effect Double mutants completely lacked symbiotic nitrogen fixation.
Mechanism Both oxidases drive respiration during symbiotic nitrogen fixation at nanomolar oxygen.
Intervention effect Double mutants fixed nitrogen at 70% of wild-type rates in culture under 2% oxygen.
Mechanism Residual nitrogen fixation presumably reflects other terminal oxidase activities.
Observation cytbd oxidase maintained dissolved oxygen at 3.6 microM.
Observation cytcbb3 oxidase depleted oxygen to submicromolar levels.
Mechanism cytcbb3 activity disproportionately supported microaerobic growth.
Observation cytbd oxidase was inactive below 3.6 microM dissolved oxygen in oxygen-limited culture.
Mechanism Both oxidases seem to contribute equally in Sesbania nodules at 10 to 20 nM oxygen.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Double mutants completely lacked symbiotic nitrogen fixation.

Taxon: AzorhizobiumAzorhizobiume0
Treatment: cytbd- cytcbb3-double mutantse0
Interactor: Sesbania rostrataSesbania rostratae1host
Outcome: symbiotic N2 fixation activitye0
Direction: completely lackede0

Not reportedComparator

Verbatim

e0
“Azorhizobium cytbd- cytcbb3-double mutants, which carry both null alleles, completely lacked symbiotic N2 fixation activity.”
✓ located verbatim in the source · abstract, characters 718–842

e1
“Sesbania rostrata symbiotic nodules”
✓ located verbatim in the source · abstract, characters 1747–1782

Title

Azorhizobium caulinodans uses both cytochrome bd (quinol) and cytochrome cbb3 (cytochrome c) terminal oxidases for symbiotic N2 fixation

P A Kaminski; C L Kitts; Z Zimmerman; et al. Journal of Bacteriology 1996. doi:10.1128/jb.178.20.5989-5994.1996

Other claims from this paper (11)

Observation Both bacterial oxidase mutations were null alleles.
Intervention effect The cytbd single mutant fixed nitrogen at 70 to 90% of wild-type rates under 2% oxygen.
Intervention effect The cytcbb3 single mutant fixed nitrogen at 70 to 90% of wild-type rates under 2% oxygen.
Mechanism Both oxidases drive respiration during symbiotic nitrogen fixation at nanomolar oxygen.
Intervention effect Double mutants fixed nitrogen at 70% of wild-type rates in culture under 2% oxygen.
Mechanism Residual nitrogen fixation presumably reflects other terminal oxidase activities.
Observation cytbd oxidase maintained dissolved oxygen at 3.6 microM.
Observation cytcbb3 oxidase depleted oxygen to submicromolar levels.
Mechanism cytcbb3 activity disproportionately supported microaerobic growth.
Observation cytbd oxidase was inactive below 3.6 microM dissolved oxygen in oxygen-limited culture.
Mechanism Both oxidases seem to contribute equally in Sesbania nodules at 10 to 20 nM oxygen.

Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

Both oxidases drive respiration during symbiotic nitrogen fixation at nanomolar oxygen.

Taxon: AzorhizobiumAzorhizobiume0
Interactor: Sesbania rostrataSesbania rostratae1host
Gene: cytbd and cytcbb3 oxidasese0
Outcome: respiratione0

Verbatim

e0
“both Azorhizobium cytbd and cytcbb3 oxidases drive respiration in environments with nanomolar O2 concentrations during symbiotic N2 fixation.”
✓ located verbatim in the source · abstract, characters 854–995

e1
“Sesbania rostrata symbiotic nodules”
✓ located verbatim in the source · abstract, characters 1747–1782

Title

Azorhizobium caulinodans uses both cytochrome bd (quinol) and cytochrome cbb3 (cytochrome c) terminal oxidases for symbiotic N2 fixation

P A Kaminski; C L Kitts; Z Zimmerman; et al. Journal of Bacteriology 1996. doi:10.1128/jb.178.20.5989-5994.1996

Other claims from this paper (11)

Observation Both bacterial oxidase mutations were null alleles.
Intervention effect The cytbd single mutant fixed nitrogen at 70 to 90% of wild-type rates under 2% oxygen.
Intervention effect The cytcbb3 single mutant fixed nitrogen at 70 to 90% of wild-type rates under 2% oxygen.
Intervention effect Double mutants completely lacked symbiotic nitrogen fixation.
Intervention effect Double mutants fixed nitrogen at 70% of wild-type rates in culture under 2% oxygen.
Mechanism Residual nitrogen fixation presumably reflects other terminal oxidase activities.
Observation cytbd oxidase maintained dissolved oxygen at 3.6 microM.
Observation cytcbb3 oxidase depleted oxygen to submicromolar levels.
Mechanism cytcbb3 activity disproportionately supported microaerobic growth.
Observation cytbd oxidase was inactive below 3.6 microM dissolved oxygen in oxygen-limited culture.
Mechanism Both oxidases seem to contribute equally in Sesbania nodules at 10 to 20 nM oxygen.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Double mutants fixed nitrogen at 70% of wild-type rates in culture under 2% oxygen.

Taxon: AzorhizobiumAzorhizobiume0
Treatment: cytbd- cytcbb3- double mutantse0
Outcome: fixed N2e0
Direction: lowerinferrede0
Value: 70%e0
Comparator: wild-typee0

Verbatim

e0
“In culture under a 2% O2 atmosphere, Azorhizobium cytbd- cytcbb3- double mutants fixed N2 at 70% of wild-type rates”
✓ located verbatim in the source · abstract, characters 996–1111

Title

Azorhizobium caulinodans uses both cytochrome bd (quinol) and cytochrome cbb3 (cytochrome c) terminal oxidases for symbiotic N2 fixation

P A Kaminski; C L Kitts; Z Zimmerman; et al. Journal of Bacteriology 1996. doi:10.1128/jb.178.20.5989-5994.1996

Other claims from this paper (11)

Observation Both bacterial oxidase mutations were null alleles.
Intervention effect The cytbd single mutant fixed nitrogen at 70 to 90% of wild-type rates under 2% oxygen.
Intervention effect The cytcbb3 single mutant fixed nitrogen at 70 to 90% of wild-type rates under 2% oxygen.
Intervention effect Double mutants completely lacked symbiotic nitrogen fixation.
Mechanism Both oxidases drive respiration during symbiotic nitrogen fixation at nanomolar oxygen.
Mechanism Residual nitrogen fixation presumably reflects other terminal oxidase activities.
Observation cytbd oxidase maintained dissolved oxygen at 3.6 microM.
Observation cytcbb3 oxidase depleted oxygen to submicromolar levels.
Mechanism cytcbb3 activity disproportionately supported microaerobic growth.
Observation cytbd oxidase was inactive below 3.6 microM dissolved oxygen in oxygen-limited culture.
Mechanism Both oxidases seem to contribute equally in Sesbania nodules at 10 to 20 nM oxygen.

Mechanismhypothesisoriginal resultmeasured

Claim · model-written summary

Residual nitrogen fixation presumably reflects other terminal oxidase activities.

Taxon: AzorhizobiumAzorhizobiume0
Gene: cytaa3 and cytboe0
Outcome: fixed N2e0
Qualifier: presumablye0

Verbatim

e0
“Azorhizobium cytbd- cytcbb3- double mutants fixed N2 at 70% of wild-type rates, presumably reflecting cytaa3 and cytbo (and other) terminal oxidase activities.”
✓ located verbatim in the source · abstract, characters 1033–1192

Title

Azorhizobium caulinodans uses both cytochrome bd (quinol) and cytochrome cbb3 (cytochrome c) terminal oxidases for symbiotic N2 fixation

P A Kaminski; C L Kitts; Z Zimmerman; et al. Journal of Bacteriology 1996. doi:10.1128/jb.178.20.5989-5994.1996

Other claims from this paper (11)

Observation Both bacterial oxidase mutations were null alleles.
Intervention effect The cytbd single mutant fixed nitrogen at 70 to 90% of wild-type rates under 2% oxygen.
Intervention effect The cytcbb3 single mutant fixed nitrogen at 70 to 90% of wild-type rates under 2% oxygen.
Intervention effect Double mutants completely lacked symbiotic nitrogen fixation.
Mechanism Both oxidases drive respiration during symbiotic nitrogen fixation at nanomolar oxygen.
Intervention effect Double mutants fixed nitrogen at 70% of wild-type rates in culture under 2% oxygen.
Observation cytbd oxidase maintained dissolved oxygen at 3.6 microM.
Observation cytcbb3 oxidase depleted oxygen to submicromolar levels.
Mechanism cytcbb3 activity disproportionately supported microaerobic growth.
Observation cytbd oxidase was inactive below 3.6 microM dissolved oxygen in oxygen-limited culture.
Mechanism Both oxidases seem to contribute equally in Sesbania nodules at 10 to 20 nM oxygen.

Observationobservedoriginal resultmeasured

Claim · model-written summary

cytbd oxidase maintained dissolved oxygen at 3.6 microM.

Taxon: AzorhizobiumAzorhizobiume0
Gene: cytbd oxidasee0
Outcome: dissolved O2e0
Direction: maintainede0
Value: 3.6 microMe0

Verbatim

e0
“Azorhizobium cytbd- and cytcbb3- single mutants were compared for their ability to deplete a limiting-O2 sparge; cytbd oxidase activity maintained dissolved O2 at 3.6 microM steady state”
✓ located verbatim in the source · abstract, characters 1245–1431

Title

Azorhizobium caulinodans uses both cytochrome bd (quinol) and cytochrome cbb3 (cytochrome c) terminal oxidases for symbiotic N2 fixation

P A Kaminski; C L Kitts; Z Zimmerman; et al. Journal of Bacteriology 1996. doi:10.1128/jb.178.20.5989-5994.1996

Other claims from this paper (11)

Observation Both bacterial oxidase mutations were null alleles.
Intervention effect The cytbd single mutant fixed nitrogen at 70 to 90% of wild-type rates under 2% oxygen.
Intervention effect The cytcbb3 single mutant fixed nitrogen at 70 to 90% of wild-type rates under 2% oxygen.
Intervention effect Double mutants completely lacked symbiotic nitrogen fixation.
Mechanism Both oxidases drive respiration during symbiotic nitrogen fixation at nanomolar oxygen.
Intervention effect Double mutants fixed nitrogen at 70% of wild-type rates in culture under 2% oxygen.
Mechanism Residual nitrogen fixation presumably reflects other terminal oxidase activities.
Observation cytcbb3 oxidase depleted oxygen to submicromolar levels.
Mechanism cytcbb3 activity disproportionately supported microaerobic growth.
Observation cytbd oxidase was inactive below 3.6 microM dissolved oxygen in oxygen-limited culture.
Mechanism Both oxidases seem to contribute equally in Sesbania nodules at 10 to 20 nM oxygen.

Observationobservedoriginal resultmeasured

Claim · model-written summary

cytbd oxidase was inactive below 3.6 microM dissolved oxygen in oxygen-limited culture.

Taxon: AzorhizobiumAzorhizobiume0
Gene: cytbd oxidasee0
Outcome: inactivee0
Qualifier: below 3.6 microM dissolved O2e0

Verbatim

e0
“in O2 limited continuous culture, Azorhizobium cytbd oxidase is inactive below 3.6 microM dissolved O2”
✓ located verbatim in the source · abstract, characters 1633–1735

Title

Azorhizobium caulinodans uses both cytochrome bd (quinol) and cytochrome cbb3 (cytochrome c) terminal oxidases for symbiotic N2 fixation

P A Kaminski; C L Kitts; Z Zimmerman; et al. Journal of Bacteriology 1996. doi:10.1128/jb.178.20.5989-5994.1996

Other claims from this paper (11)

Observation Both bacterial oxidase mutations were null alleles.
Intervention effect The cytbd single mutant fixed nitrogen at 70 to 90% of wild-type rates under 2% oxygen.
Intervention effect The cytcbb3 single mutant fixed nitrogen at 70 to 90% of wild-type rates under 2% oxygen.
Intervention effect Double mutants completely lacked symbiotic nitrogen fixation.
Mechanism Both oxidases drive respiration during symbiotic nitrogen fixation at nanomolar oxygen.
Intervention effect Double mutants fixed nitrogen at 70% of wild-type rates in culture under 2% oxygen.
Mechanism Residual nitrogen fixation presumably reflects other terminal oxidase activities.
Observation cytbd oxidase maintained dissolved oxygen at 3.6 microM.
Observation cytcbb3 oxidase depleted oxygen to submicromolar levels.
Mechanism cytcbb3 activity disproportionately supported microaerobic growth.
Mechanism Both oxidases seem to contribute equally in Sesbania nodules at 10 to 20 nM oxygen.

Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

Both oxidases seem to contribute equally in Sesbania nodules at 10 to 20 nM oxygen.

Taxon: AzorhizobiumAzorhizobiume0
Interactor: Sesbania rostrataSesbania rostratae0host
Gene: cytbd and cytcbb3e0
Outcome: contribute equally as respiratory terminal oxidasese0
Qualifier: 10 to 20 nMe0

Verbatim

e0
“in Sesbania rostrata symbiotic nodules, in which physiological, dissolved O2 is maintained at 10 to 20 nM, both Azorhizobium cytbd and cytcbb3 seem to contribute equally as respiratory terminal oxidases.”
✓ located verbatim in the source · abstract, characters 1744–1947

Title

Azorhizobium caulinodans uses both cytochrome bd (quinol) and cytochrome cbb3 (cytochrome c) terminal oxidases for symbiotic N2 fixation

P A Kaminski; C L Kitts; Z Zimmerman; et al. Journal of Bacteriology 1996. doi:10.1128/jb.178.20.5989-5994.1996

Other claims from this paper (11)

Observation Both bacterial oxidase mutations were null alleles.
Intervention effect The cytbd single mutant fixed nitrogen at 70 to 90% of wild-type rates under 2% oxygen.
Intervention effect The cytcbb3 single mutant fixed nitrogen at 70 to 90% of wild-type rates under 2% oxygen.
Intervention effect Double mutants completely lacked symbiotic nitrogen fixation.
Mechanism Both oxidases drive respiration during symbiotic nitrogen fixation at nanomolar oxygen.
Intervention effect Double mutants fixed nitrogen at 70% of wild-type rates in culture under 2% oxygen.
Mechanism Residual nitrogen fixation presumably reflects other terminal oxidase activities.
Observation cytbd oxidase maintained dissolved oxygen at 3.6 microM.
Observation cytcbb3 oxidase depleted oxygen to submicromolar levels.
Mechanism cytcbb3 activity disproportionately supported microaerobic growth.
Observation cytbd oxidase was inactive below 3.6 microM dissolved oxygen in oxygen-limited culture.