Abstract
Plant growth-promoting bacteria (PGPB) strains that contain the enzyme 1-amino-cyclopropane-1-carboxylate (ACC) deaminase can lower stress ethylene levels and improve plant growth. In this study, ACC deaminase-producing bacteria were isolated from a ) salt-impacted ( 50 dS/m) farm field, and their ability to promote plant growth of barley 1): and oats in saline soil was investigated in pouch assays (1% NaCI), greenhouse trials (9.4 dS/m), and field trials (6-24 dS/m). A mix of previously isolated PGPB strains UW3 (Pseudomonas sp.) and UW4 (P. sp.) was also tested for comparison. Rhizobacterial isolate CMH3 (P. corrugata) and UW3+UW4 partially alleviated plant salt stress in growth pouch assays. In greenhouse trials, CMH3 enhanced root biomass of barley and oats by 200% and 50%, respectively. UW3+UW4, CMH3 and isolate CMH2 also enhanced barley and oat shoot growth by 100%-150%. In field tests, shoot biomass of oats tripled when treated with UW3+UW4 and doubled with CHM3 compared with that of untreated plants. PGPB treatment did not affect salt uptake on a per mass basis; higher plant biomass led to greater salt uptake, resulting in decreased soil salinity. This study demonstrates a method for improving plant growth in marginal saline soils. Associated implications for salt
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Claims 12
Claim · model-written summary
CMH3 partially alleviated plant salt stress in pouch assays.
- Taxon
- Barley and Oats
Avena sativa.jpg?width=60)
Hordeum vulgaret0 - Treatment
- Rhizobacterial isolate CMH3e0
- Interactor
- P. corrugataPseudomonas corrugatae0symbiont
- Outcome
- plant salt stresse0
- Direction
- alleviatede0
- Setting
- growth pouch assayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Rhizobacterial isolate CMH3 (P. corrugata) and UW3+UW4 partially alleviated plant salt stress in growth pouch assays.”
t0“Barley and Oats”
Claim · model-written summary
UW3+UW4 partially alleviated plant salt stress in pouch assays.
- Taxon
- Barley and OatsAvena sativaHordeum vulgaret0
- Treatment
- UW3+UW4e0
- Interactor
- UW3+UW4e0symbiont
- Outcome
- plant salt stresse0
- Direction
- alleviatede0
- Setting
- growth pouch assayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rhizobacterial isolate CMH3 (P. corrugata) and UW3+UW4 partially alleviated plant salt stress in growth pouch assays.”
t0“Barley and Oats”
Claim · model-written summary
CMH3 enhanced barley root biomass by 200% in greenhouse trials.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- CMH3e0
- Interactor
- CMH3e0symbiont
- Outcome
- root biomasse0
- Direction
- enhancede0
- Value
- 200%e0
- Setting
- greenhouse trialse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In greenhouse trials, CMH3 enhanced root biomass of barley and oats by 200% and 50%, respectively.”
Claim · model-written summary
CMH3 enhanced oat root biomass by 50% in greenhouse trials.
- Taxon
- oatsAvena sativae0
- Treatment
- CMH3e0
- Interactor
- CMH3e0symbiont
- Outcome
- root biomasse0
- Direction
- enhancede0
- Value
- 50%e0
- Setting
- greenhouse trialse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In greenhouse trials, CMH3 enhanced root biomass of barley and oats by 200% and 50%, respectively.”
Claim · model-written summary
UW3+UW4 enhanced barley and oat shoot growth by 100%–150%.
- Taxon
- barley and oatHordeum vulgareAvena sativae0
- Treatment
- UW3+UW4e0
- Interactor
- UW3+UW4e0symbiont
- Outcome
- shoot growthe0
- Direction
- enhancede0
- Value
- 100%-150%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“UW3+UW4, CMH3 and isolate CMH2 also enhanced barley and oat shoot growth by 100%-150%.”
Claim · model-written summary
CMH3 enhanced barley and oat shoot growth by 100%–150%.
- Taxon
- barley and oatHordeum vulgareAvena sativae0
- Treatment
- CMH3e0
- Interactor
- CMH3e0symbiont
- Outcome
- shoot growthe0
- Direction
- enhancede0
- Value
- 100%-150%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“UW3+UW4, CMH3 and isolate CMH2 also enhanced barley and oat shoot growth by 100%-150%.”
Claim · model-written summary
CMH2 enhanced barley and oat shoot growth by 100%–150%.
- Taxon
- barley and oatHordeum vulgareAvena sativae0
- Treatment
- isolate CMH2e0
- Interactor
- CMH2e0symbiont
- Outcome
- shoot growthe0
- Direction
- enhancede0
- Value
- 100%-150%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“UW3+UW4, CMH3 and isolate CMH2 also enhanced barley and oat shoot growth by 100%-150%.”
Claim · model-written summary
UW3+UW4 tripled oat shoot biomass in field tests versus untreated plants.
- Taxon
- oatsAvena sativae0
- Treatment
- UW3+UW4e0
- Interactor
- UW3+UW4e0symbiont
- Outcome
- shoot biomasse0
- Direction
- triplede0
- Comparator
- untreated plantse0
- Setting
- field testse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In field tests, shoot biomass of oats tripled when treated with UW3+UW4 and doubled with CHM3 compared with that of untreated plants.”
Claim · model-written summary
CHM3 doubled oat shoot biomass in field tests versus untreated plants.
- Taxon
- oatsAvena sativae0
- Treatment
- CHM3e0
- Interactor
- CHM3e0symbiont
- Outcome
- shoot biomasse0
- Direction
- doublede0
- Comparator
- untreated plantse0
- Setting
- field testse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In field tests, shoot biomass of oats tripled when treated with UW3+UW4 and doubled with CHM3 compared with that of untreated plants.”
Claim · model-written summary
PGPB treatment did not change salt uptake per mass.
- Taxon
- Barley and OatsAvena sativaHordeum vulgaret0
- Treatment
- PGPB treatmente0
- Interactor
- PGPBe0symbiont
- Outcome
- salt uptake on a per mass basise0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PGPB treatment did not affect salt uptake on a per mass basis”
t0“Barley and Oats”
Claim · model-written summary
Higher biomass from PGPB treatment produced greater salt uptake.
- Taxon
- Barley and OatsAvena sativaHordeum vulgaret0
- Treatment
- Plant Growth-Promoting Bacteriat0
- Outcome
- salt uptakee0
- Direction
- greatere0
- Qualifier
- higher plant biomasse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher plant biomass led to greater salt uptake”
t0“Plant Growth-Promoting Bacteria Facilitate the Growth of Barley and Oats”
Claim · model-written summary
Greater plant salt uptake decreased soil salinity.
- Taxon
- Barley and OatsAvena sativaHordeum vulgaret0
- Outcome
- soil salinitye0
- Direction
- decreasede0
- Qualifier
- decreased soil salinitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“resulting in decreased soil salinity”
t0“Barley and Oats”
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