Abstract
Cultivated soils need to shelter suitable rhizobia for legume cropping, especially in areas outside of the plant-host native range, where soils may lack efficient symbiotic partners. We analyzed the distribution patterns and traits of native rhizobia associated with Pisum sativum L. in soils of Hebei Province, a region that has recently experienced an expansion of pea production in China. A total of 43 rhizobial isolates were obtained from root-nodules and characterized genetically and symbiotically. The isolates discriminated into 12 genotypes as defined by PCR-RFLP of IGS DNA. Multiple locus sequence analysis (MLSA) based on the 16S rRNA, recA , atpD and gyrB of representative strains placed them into five clusters of four defined species ( R. sophorae , R. indicum , R. changzhiense , and R. anhuiense ) and a novel Rhizobium genospecies. R. sophorae was the dominant group (58%) followed by R. indicum (23%). The other groups composed of R. changzhiense (14%), R. anhuiense (1 isolate) and the new genospecies (1 isolate), were minor and site-specific. Based on nodC phylogeny, all representatives were intermingled within the symbiovar viciae with R. sophorae and R. changzhiense being a new record. All the tested strains showed efficient symbiotic fixation on pea plants, with half of them exhibiting better plant biomass performance. This suggests that the pea-nodulating rhizobia in Hebei Province form a specific community of efficient symbiotic rhizobia on pea, distinct from those reported in other countries.
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Claims 9
Claim · model-written summary
R. sophorae was the dominant rhizobial group (58%) among pea isolates in Hebei Province.
- Taxon
- Pisum sativum
Lathyrus oleraceuse1 - Interactor
- R. sophoraeRhizobium sophoraee2symbiont
- Outcome
- dominant groupe2
- Value
- 58%e2
- Setting
- Hebei Provincee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“We analyzed the distribution patterns and traits of native rhizobia associated with Pisum sativum L. in soils of Hebei Province”
e2“R. sophorae was the dominant group (58%) followed by R. indicum (23%)”
Claim · model-written summary
R. indicum was the second group (23%) among pea isolates.
- Taxon
- Pisum sativumLathyrus oleraceuse1
- Interactor
- R. indicumRhizobium indicume2symbiont
- Outcome
- followed bye2
- Value
- 23%e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“We analyzed the distribution patterns and traits of native rhizobia associated with Pisum sativum L. in soils of Hebei Province”
e2“R. sophorae was the dominant group (58%) followed by R. indicum (23%)”
Claim · model-written summary
R. changzhiense made up 14% of pea isolates and was minor and site-specific.
- Taxon
- Pisum sativumLathyrus oleraceuse1
- Interactor
- R. changzhienseRhizobium changzhiensee3symbiont
- Outcome
- minor and site-specifice3
- Value
- 14%e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“We analyzed the distribution patterns and traits of native rhizobia associated with Pisum sativum L. in soils of Hebei Province”
e3“The other groups composed of R. changzhiense (14%), R. anhuiense (1 isolate) and the new genospecies (1 isolate), were minor and site-specific”
Claim · model-written summary
R. anhuiense (1 isolate) and a new genospecies (1 isolate) were minor and site-specific among pea isolates.
- Taxon
- Pisum sativumLathyrus oleraceuse1
- Interactor
- R. anhuienseRhizobium anhuiensee3symbiont
- Second interactor
- new genospeciese3symbiont
- Outcome
- minor and site-specifice3
- Value
- 1 isolatee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“We analyzed the distribution patterns and traits of native rhizobia associated with Pisum sativum L. in soils of Hebei Province”
e3“The other groups composed of R. changzhiense (14%), R. anhuiense (1 isolate) and the new genospecies (1 isolate), were minor and site-specific”
Claim · model-written summary
Based on nodC phylogeny, all pea rhizobial representatives fell within the symbiovar viciae.
- Taxon
- Pisum sativumLathyrus oleraceuse1
- Outcome
- intermingled within the symbiovar viciaee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“We analyzed the distribution patterns and traits of native rhizobia associated with Pisum sativum L. in soils of Hebei Province”
e4“Based on nodC phylogeny, all representatives were intermingled within the symbiovar viciae with R. sophorae and R. changzhiense being a new record”
Claim · model-written summary
R. sophorae and R. changzhiense are reported as a new record for this pea rhizobial community.
- Taxon
- Pisum sativumLathyrus oleraceuse1
- Interactor
- R. sophoraeRhizobium sophoraee4symbiont
- Second interactor
- R. changzhienseRhizobium changzhiensee4symbiont
- Outcome
- a new recorde4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“We analyzed the distribution patterns and traits of native rhizobia associated with Pisum sativum L. in soils of Hebei Province”
e4“Based on nodC phylogeny, all representatives were intermingled within the symbiovar viciae with R. sophorae and R. changzhiense being a new record”
Claim · model-written summary
All tested rhizobial strains showed efficient symbiotic fixation on pea plants.
- Taxon
- pea plantsLathyrus oleraceuse5
- Interactor
- strainse5symbiont
- Outcome
- symbiotic fixatione5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“All the tested strains showed efficient symbiotic fixation on pea plants, with half of them exhibiting better plant biomass performance”
Claim · model-written summary
Half of the tested strains gave better plant biomass performance on pea.
- Taxon
- pea plantsLathyrus oleraceuse5
- Interactor
- strainse5symbiont
- Outcome
- plant biomass performancee5
- Direction
- bettere5
- Value
- halfe5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“All the tested strains showed efficient symbiotic fixation on pea plants, with half of them exhibiting better plant biomass performance”
Claim · model-written summary
The pea-nodulating rhizobia in Hebei Province form a specific community of efficient symbiotic rhizobia distinct from those reported in other countries.
- Taxon
- peaLathyrus oleraceuse6
- Interactor
- rhizobiae6symbiont
- Outcome
- specific community of efficient symbiotic rhizobiae6
- Setting
- Hebei Provincee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“This suggests that the pea-nodulating rhizobia in Hebei Province form a specific community of efficient symbiotic rhizobia on pea, distinct from those reported in other countries”