Abstract
The signaling pathways induced by Pseudomonas putida in rice plants at the early plant–rhizobacteria interaction stages, with and without inoculation of Xanthomonas oryzae pv. oryzae, were studied. In the absence of pathogen, P. putida reduced ethylene (ET) production, and promoted root and stem elongation. Interestingly, gene OsHDA702, which plays an important role in root formation, was found significantly up-regulated in the presence of the rhizobacterium. Although X. oryzae pv. oryzae inoculation enhanced ET production in rice plants, P. putida treatment repressed ET-, jasmonic acid (JA)- and salicylic acid (SA)-mediated defense pathways, and induced the biosynthesis of abscisic acid (ABA), and the overexpression of OsHDA705 and some pathogenesis-related proteins (PRs), which in turn increased the susceptibility of the rice plants against the pathogen. Collectively, this is the first work on the defense signaling induced by plant growth-promoting rhizobacteria in plants at the early interaction stages, and suggests that rhizobacteria stimulate an alternative defense mechanism in plants based on ABA accumulation and OsHDA705 signaling.
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Claims 8
Claim · model-written summary
P. putida reduced rice ethylene production without pathogen.
- Taxon
- rice
Oryza sativat0 - Treatment
- P. putidae0
- Interactor
- P. putida
Pseudomonas putidae0symbiont - Outcome
- ethylene (ET) productione0
- Direction
- reducede0
- Comparator
- absence of pathogene0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the absence of pathogen, P. putida reduced ethylene (ET) production”
t0“Rice”
Claim · model-written summary
P. putida promoted rice root and stem elongation without pathogen.
- Taxon
- riceOryza sativat0
- Treatment
- P. putidae0
- Interactor
- P. putidaPseudomonas putidae0symbiont
- Outcome
- root and stem elongatione0
- Direction
- promotede0
- Comparator
- absence of pathogene0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the absence of pathogen, P. putida reduced ethylene (ET) production, and promoted root and stem elongation”
t0“Rice”
Claim · model-written summary
The rhizobacterium significantly upregulated OsHDA702.
- Taxon
- riceOryza sativat0
- Treatment
- rhizobacteriume0
- Gene
- OsHDA702e0
- Outcome
- OsHDA702e0
- Direction
- up-regulatede0
RhizobiumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“gene OsHDA702, which plays an important role in root formation, was found significantly up-regulated in the presence of the rhizobacterium”
t0“Rice”
Claim · model-written summary
X. oryzae pv. oryzae inoculation increased rice ethylene production.
- Taxon
- riceOryza sativae0
- Treatment
- X. oryzae pv. oryzae inoculatione0
- Interactor
- X. oryzae pv. oryzae
Xanthomonas oryzae pv. oryzaee0pathogen - Outcome
- ET productione0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“X. oryzae pv. oryzae inoculation enhanced ET production in rice plants”
Claim · model-written summary
P. putida repressed rice ethylene, jasmonic acid and salicylic acid defense pathways with pathogen inoculation.
- Taxon
- riceOryza sativat0
- Treatment
- P. putida treatmente0
- Interactor
- P. putidaPseudomonas putidae0symbiont
- Outcome
- ET-, jasmonic acid (JA)- and salicylic acid (SA)-mediated defense pathwayse0
- Direction
- repressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P. putida treatment repressed ET-, jasmonic acid (JA)- and salicylic acid (SA)-mediated defense pathways”
t0“Rice”
Claim · model-written summary
P. putida induced abscisic acid biosynthesis.
- Taxon
- riceOryza sativat0
- Treatment
- P. putida treatmente0
- Interactor
- P. putidaPseudomonas putidae0symbiont
- Outcome
- biosynthesis of abscisic acid (ABA)e0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P. putida treatment repressed ET-, jasmonic acid (JA)- and salicylic acid (SA)-mediated defense pathways, and induced the biosynthesis of abscisic acid (ABA)”
t0“Rice”
Claim · model-written summary
P. putida induced OsHDA705 and pathogenesis-related protein overexpression.
- Taxon
- RiceOryza sativat0
- Treatment
- P. putidae1
- Interactor
- P. putidaPseudomonas putidae1symbiont
- Gene
- OsHDA705e0
- Outcome
- overexpression of OsHDA705 and some pathogenesis-related proteins (PRs)e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the overexpression of OsHDA705 and some pathogenesis-related proteins (PRs)”
t0“Rice”
e1“P. putida treatment repressed”
Claim · model-written summary
P. putida increased rice susceptibility to the pathogen.
- Taxon
- riceOryza sativae0
- Treatment
- Pseudomonas putidat0
- Interactor
- Xanthomonas oryzae pv. oryzaeXanthomonas oryzae pv. oryzaee1pathogen
- Second interactor
- Pseudomonas putidaPseudomonas putidat0symbiont
- Outcome
- susceptibility of the rice plants against the pathogene0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“which in turn increased the susceptibility of the rice plants against the pathogen”
t0“Pseudomonas putida Represses JA- and SA-Mediated Defense Pathways in Rice”
e1“Xanthomonas oryzae pv. oryzae”
The same questions in other papers
Pseudomonas putida · growth · Oryza sativa (rice)Results agree
1 paper in the same direction as this paper
- positive
inoculation · physiology: hormones · Oryza sativa (rice)Positive and negative results
3 papers in the same direction as this paper · 9 in the opposite direction
- positive
- positive
- positive
9 papers more in this group
See all 13 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.