Abstract
High salt stress caused by ionic and osmotic stressors eventually results in the suppression of plant growth and a reduction in crop productivity. In our previous reports, we isolated the endophytic bacterium Bacillus oryzicola YC7007 from the rhizosphere of rice (Oryza sativa L.), which promoted plant growth and development and suppressed bacterial disease in rice by inducing systemic resistance and antibiotic production. In this study, Arabidopsis thaliana seedlings under salt stress that were bacterized with YC7007 displayed an increase in the number of lateral roots and greater fresh weight relative to that of the control seedlings. The chlorophyll content of the bacterized seedlings was increased when compared with that of untreated seedlings. The accumulation of salt-induced malondialdehyde and Na+ in seedlings was inhibited by their co-cultivation with YC7007. The expression of stress-related genes in the shoots and roots of seedlings was induced by YC7007 inoculation under salt stress conditions. Interestingly, YC7007-mediated salt tolerance requires SOS1, a plasma membrane-localized Na+/H+ antiporter, given that plant growth in sos2-1 and sos3-1 mutants was promoted under salt-stress conditions, whereas that of sos1-1 mutants was not. In addition, inoculation with YC7007 in upland-crops, such as radish and cabbage, increased the number of lateral roots and the fresh weight of seedlings under salt-stress conditions. Our results suggest that B. oryzicola YC7007 enhanced plant tolerance to salt stress via the SOS1-dependent salt signaling pathway, resulting in the normal growth of salt-stressed plants.
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Claims 9
Claim · model-written summary
YC7007 increased lateral root number and fresh weight in salt-stressed Arabidopsis seedlings.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianae0 - Treatment
- bacterized with YC7007e0
- Interactor
- YC7007e0symbiont
- Outcome
- number of lateral roots and greater fresh weighte0
- Direction
- increasee0
- Comparator
- control seedlingse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Arabidopsis thaliana seedlings under salt stress that were bacterized with YC7007 displayed an increase in the number of lateral roots and greater fresh weight relative to that of the control seedlings”
Claim · model-written summary
YC7007 increased chlorophyll content in Arabidopsis seedlings.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Treatment
- bacterized seedlingse0
- Interactor
- YC7007t0symbiont
- Outcome
- chlorophyll contente0
- Direction
- increasede0
- Comparator
- untreated seedlingse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The chlorophyll content of the bacterized seedlings was increased when compared with that of untreated seedlings”
t0“Bacillus oryzicola YC7007”
e1“Arabidopsis thaliana seedlings under salt stress that were bacterized with YC7007 displayed an increase in the number of lateral roots and greater fresh weight relative to that of the control seedlings”
Claim · model-written summary
Co-cultivation with YC7007 inhibited salt-induced malondialdehyde and Na+ accumulation.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Treatment
- co-cultivation with YC7007e0
- Interactor
- YC7007e0symbiont
- Outcome
- accumulation of salt-induced malondialdehyde and Na+e0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The accumulation of salt-induced malondialdehyde and Na+ in seedlings was inhibited by their co-cultivation with YC7007”
t0“Bacillus oryzicola YC7007”
e1“Arabidopsis thaliana seedlings under salt stress that were bacterized with YC7007 displayed an increase in the number of lateral roots and greater fresh weight relative to that of the control seedlings”
Claim · model-written summary
YC7007 induced stress-related gene expression in shoots and roots under salt stress.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Organ / stage
- shoots and rootse0
- Treatment
- YC7007 inoculatione0
- Interactor
- YC7007e0symbiont
- Outcome
- expression of stress-related genese0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The expression of stress-related genes in the shoots and roots of seedlings was induced by YC7007 inoculation under salt stress conditions”
t0“Bacillus oryzicola YC7007”
e1“Arabidopsis thaliana seedlings under salt stress that were bacterized with YC7007 displayed an increase in the number of lateral roots and greater fresh weight relative to that of the control seedlings”
Claim · model-written summary
YC7007 promoted salt-stressed growth in sos2-1 and sos3-1 mutants.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Material
- sos2-1 and sos3-1 mutantse0
- Treatment
- YC7007t0
- Interactor
- YC7007t0symbiont
- Outcome
- plant growthe0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant growth in sos2-1 and sos3-1 mutants was promoted under salt-stress conditions”
t0“Bacillus oryzicola YC7007”
e1“Arabidopsis thaliana seedlings under salt stress that were bacterized with YC7007 displayed an increase in the number of lateral roots and greater fresh weight relative to that of the control seedlings”
Claim · model-written summary
YC7007 did not promote salt-stressed growth in sos1-1 mutants.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Material
- sos1-1 mutantse0
- Treatment
- YC7007t0
- Interactor
- YC7007t0symbiont
- Outcome
- that of sos1-1 mutantse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“whereas that of sos1-1 mutants was not”
t0“Bacillus oryzicola YC7007”
e1“Arabidopsis thaliana seedlings under salt stress that were bacterized with YC7007 displayed an increase in the number of lateral roots and greater fresh weight relative to that of the control seedlings”
Claim · model-written summary
YC7007 increased lateral root number and fresh weight in salt-stressed radish seedlings.
- Taxon
- radish
Raphanus sativuse0 - Treatment
- inoculation with YC7007e0
- Interactor
- YC7007e0symbiont
- Outcome
- number of lateral roots and the fresh weighte0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inoculation with YC7007 in upland-crops, such as radish and cabbage, increased the number of lateral roots and the fresh weight of seedlings under salt-stress conditions”
Claim · model-written summary
YC7007 increased lateral root number and fresh weight in salt-stressed cabbage seedlings.
- Taxon
- cabbage
Brassica oleracea var. capitatae0 - Treatment
- inoculation with YC7007e0
- Interactor
- YC7007e0symbiont
- Outcome
- number of lateral roots and the fresh weighte0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inoculation with YC7007 in upland-crops, such as radish and cabbage, increased the number of lateral roots and the fresh weight of seedlings under salt-stress conditions”
Claim · model-written summary
Authors infer that YC7007 enhances salt tolerance through SOS1-dependent signaling.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Interactor
- B. oryzicola YC7007
Bacillus velezensise0symbiont - Gene
- SOS1e0
- Outcome
- plant tolerance to salt stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“B. oryzicola YC7007 enhanced plant tolerance to salt stress via the SOS1-dependent salt signaling pathway”
t0“Bacillus oryzicola YC7007”
e1“Arabidopsis thaliana seedlings under salt stress that were bacterized with YC7007 displayed an increase in the number of lateral roots and greater fresh weight relative to that of the control seedlings”
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See all 58 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.