Abstract
In pea (Pisum sativum) up to 50 nodulation mutants are known, several of which are affected in the early steps of the symbiotic interaction with Rhizobium sp. bacteria. Here we describe the role of the sym2 gene in nodulation (Nod) factor perception. Our experiments show that the sym2A allele from the wild pea variety Afghanistan confers an arrest in infection-thread growth if the Rhizobium leguminosarum bv viciae strain does not produce Nod factors with a NodX-mediated acetylation at their reducing end. Since the induction of the early nodulin gene ENOD12 in the epidermis and the formation of a nodule primordium in the inner cortex were not affected, we conclude that more than one Nod factor-perception mechanism is active. Furthermore, we show that sym2A-mediated control of infection-thread growth was affected by the bacterial nodulation gene nodO.
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Claims 4
Claim · model-written summary
In pea, the sym2A allele from the wild variety Afghanistan confers an arrest in infection-thread growth when the Rhizobium strain does not produce NodX-acetylated Nod factors.
- Taxon
- pea
Lathyrus oleraceuse0 - Material
- wild pea variety Afghanistane1
- Treatment
- Rhizobium leguminosarum bv viciae strain does not produce Nod factors with a NodX-mediated acetylatione1
- Interactor
- Rhizobium leguminosarum bv viciae
Rhizobium leguminosarume1symbiont - Gene
- sym2Ae1
- Outcome
- infection-thread growthe1
- Direction
- arreste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In pea (Pisum sativum) up to 50 nodulation mutants are known”
e1“Our experiments show that the sym2A allele from the wild pea variety Afghanistan confers an arrest in infection-thread growth if the Rhizobium leguminosarum bv viciae strain does not produce Nod factors with a NodX-mediated acetylation at their reducing end”
Claim · model-written summary
In pea, sym2A-mediated control of infection-thread growth was affected by the bacterial nodulation gene nodO; the direction is not stated.
- Taxon
- peaLathyrus oleraceuse0
- Gene
- nodOe2
- Outcome
- sym2A-mediated control of infection-thread growthe2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In pea (Pisum sativum) up to 50 nodulation mutants are known”
e2“sym2A-mediated control of infection-thread growth was affected by the bacterial nodulation gene nodO”
Claim · model-written summary
In pea, induction of ENOD12 in the epidermis and nodule primordium formation in the inner cortex were not affected by the sym2A-related treatment.
- Taxon
- peaLathyrus oleraceuse0
- Organ / stage
- epidermise3
- Treatment
- Rhizobium leguminosarum bv viciae strain does not produce Nod factors with a NodX-mediated acetylatione1
- Gene
- ENOD12e3
- Outcome
- induction of the early nodulin gene ENOD12 in the epidermis and the formation of a nodule primordium in the inner cortexe3
- Direction
- not affectede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In pea (Pisum sativum) up to 50 nodulation mutants are known”
e1“Our experiments show that the sym2A allele from the wild pea variety Afghanistan confers an arrest in infection-thread growth if the Rhizobium leguminosarum bv viciae strain does not produce Nod factors with a NodX-mediated acetylation at their reducing end”
e3“Since the induction of the early nodulin gene ENOD12 in the epidermis and the formation of a nodule primordium in the inner cortex were not affected”
Claim · model-written summary
The authors conclude that more than one Nod factor-perception mechanism is active in pea.
- Taxon
- peaLathyrus oleraceuse0
- Outcome
- more than one Nod factor-perception mechanism is activee4
- Qualifier
- Nod factor-perception mechanisme4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In pea (Pisum sativum) up to 50 nodulation mutants are known”
e4“we conclude that more than one Nod factor-perception mechanism is active”
The same questions in other papers
nodulation factor · molecular: expression · Lathyrus oleraceus (pea)Positive and negative results
1 in the opposite direction
- positive
Rhizobium leguminosarum · molecular: expression · Lathyrus oleraceus (pea)Positive and negative results
2 in the opposite direction
- positive
- positive
nodulation factor · growth · Lathyrus oleraceus (pea)Positive and negative results
3 in the opposite direction
- positive
- positive
- positive
Rhizobium leguminosarum · growth · Lathyrus oleraceus (pea)Positive and negative results
4 in the opposite direction
- positive
- positive
- positive
1 paper more in this group
See all 5 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.