Abstract
Pseudomonas fluorescens FPT9601-T5 was originally identified as an endophytic plant growth-promoting rhizobacteria (PGPR) on tomato. To perform a molecular dissecttion of physiological and biochemical changes occurring in the host triggered by P. fluorescens FPT9601-T5 colonization, the model plant Arabidopsis was used in this study. Root colonization of Arabidopsis with P. fluorescens FPT9601-T5 promoted plant growth later than three weeks after inoculation and partially suppressed disease symptoms caused by Pseudomonas syringae pv. tomato DC3000, indicating that P. fluorescens FPT9601-T5 acted as a PGPR on Arabidopsis. To obtain a global view on transcript modification during the Arabidopsis-FPT9601-T5 interaction, we performed microarray analysis using Affymetrix Genechip probe arrays representing approximately 22,800 genes. The results showed that 95 and 105 genes were up- or down-regulated, respectively, more than twofold in FPT9601-T5-treated Arabidopsis plants as compared with control plants. Those up-regulated included genes involved in metabolism, signal transduction, and stress response. Noteworthy, upon FPT9601-T5 colonization, putative auxin-regulated genes and nodulin-like genes were up-regulated, and some ethylene-responsive genes were down-regulated. Our results suggest that P. fluorescens FPT9601-T5 triggered plant responses in a manner similar to known PGPR and, at least in some aspects, to rhizobia.
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Claims 6
Claim · model-written summary
Pseudomonas colonization promoted Arabidopsis growth after three weeks.
- Taxon
- Arabidopsis
Arabidopsise0 - Treatment
- Root colonization of Arabidopsis with P. fluorescens FPT9601-T5e0
- Interactor
- P. fluorescens FPT9601-T5
.JPG?width=60)
Pseudomonas fluorescense0symbiont - Outcome
- plant growthe0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.JPG?width=500)
Verbatim
e0“Root colonization of Arabidopsis with P. fluorescens FPT9601-T5 promoted plant growth later than three weeks after inoculation”
Claim · model-written summary
Colonization partially suppressed disease symptoms caused by Pseudomonas syringae.
- Taxon
- ArabidopsisArabidopsist0
- Interactor
- Pseudomonas syringae pv. tomato DC3000Pseudomonas syringae pv. tomato str. DC3000e0pathogen
- Outcome
- disease symptomse0
- Direction
- suppressede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“partially suppressed disease symptoms caused by Pseudomonas syringae pv. tomato DC3000”
t0“Arabidopsis”
Claim · model-written summary
Colonized Arabidopsis had 95 genes upregulated more than twofold versus controls.
- Taxon
- ArabidopsisArabidopsise0
- Treatment
- FPT9601-T5-treatede0
- Outcome
- genes were up- or down-regulatede0
- Direction
- up-e0
- Value
- 95e0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“95 and 105 genes were up- or down-regulated, respectively, more than twofold in FPT9601-T5-treated Arabidopsis plants as compared with control plants.”
Claim · model-written summary
Colonized Arabidopsis had 105 genes downregulated more than twofold versus controls.
- Taxon
- ArabidopsisArabidopsise0
- Treatment
- FPT9601-T5-treatede0
- Outcome
- genes were up- or down-regulatede0
- Direction
- down-regulatede0
- Value
- 105e0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“95 and 105 genes were up- or down-regulated, respectively, more than twofold in FPT9601-T5-treated Arabidopsis plants as compared with control plants.”
Claim · model-written summary
Auxin regulated and nodulin like genes were upregulated on colonization.
- Taxon
- ArabidopsisArabidopsist0
- Treatment
- FPT9601-T5 colonizatione0
- Outcome
- putative auxin-regulated genes and nodulin-like genese0
- Direction
- up-regulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“upon FPT9601-T5 colonization, putative auxin-regulated genes and nodulin-like genes were up-regulated”
t0“Arabidopsis”
Claim · model-written summary
Some ethylene responsive genes were downregulated on colonization.
- Taxon
- ArabidopsisArabidopsist0
- Outcome
- ethylene-responsive genese0
- Direction
- down-regulatede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“some ethylene-responsive genes were down-regulated.”
t0“Arabidopsis”
The same questions in other papers
infection · growth · ArabidopsisPositive and negative results
2 papers in the same direction as this paper · 3 in the opposite direction
- negative
- negative
- negative
2 papers more in this group
See all 6 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.