Abstract
Abstract Salinity is a widespread abiotic stress, which has strong adverse effects on plant growth and crop productivity. Exopolysaccharides (EPS) play a crucial role in plant growth‐promoting rhizobacteria (PGPR)‐mediated improvement of plant stress tolerance. This study aimed to assess whether Glutamicibacter sp. strain producing large amounts of EPS may promote tolerance of common reed, Phragmites australis (Cav.) Trin. ex Steud., towards salt stress. This halotolerant rizhobacterium showed tolerance to salinity (up to 1 M NaCl) when cultivated on Luria‐Bertani (LB) medium. Exposure to high salinity (300 mM NaCl) significantly impacted the plant growth parameters, but this adverse effect was mitigated following inoculation with Glutamicibacter sp., which triggered higher number of leaves and tillers, shoot fresh weight/dry weight, and root fresh weight as compared to non‐inoculated plants. Salt stress increased the accumulation of malondialdehyde (MDA), polyphenols, total soluble sugars (TSSs), and free proline in shoots. In comparison, the inoculation with Glutamicibacter sp. further increased shoot polyphenol content, while decreasing MDA and free proline contents. Besides, this bacterial strain increased tissue Ca + and K + content concomitant to lower shoot Na + and root Cl − accumulation, thus further highlighting the beneficial effect of Glutamicibacter sp. strain on the plant behavior under salinity. As a whole, our study provides strong arguments for a potential utilization of EPS‐producing bacteria as a useful microbial inoculant to alleviate the deleterious effects of salinity on plants.
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Claims 16
Claim · model-written summary
Glutamicibacter tolerated salinity up to 1 M NaCl on LB medium.
- Taxon
- Phragmites australis
Phragmites australist0 - Interactor
- Glutamicibacter sp.Glutamicibactert0symbiont
- Outcome
- tolerance to salinitye0
- Value
- 1 M NaCle0
- Setting
- Luria‐Bertani (LB) mediume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This halotolerant rizhobacterium showed tolerance to salinity (up to 1 M NaCl) when cultivated on Luria‐Bertani (LB) medium”
t0“Glutamicibacter sp. alleviates salt impact on Phragmites australis”
Claim · model-written summary
Exposure to 300 mM NaCl significantly harmed common reed growth parameters.
- Taxon
- Phragmites australisPhragmites australist0
- Treatment
- 300 mM NaCle0
- Outcome
- plant growth parameterse0
- Direction
- adverse effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exposure to high salinity (300 mM NaCl) significantly impacted the plant growth parameters, but this adverse effect was mitigated following inoculation with Glutamicibacter sp.”
t0“Phragmites australis”
Claim · model-written summary
Under high salinity, inoculation increased leaf and tiller numbers relative to uninoculated plants.
- Taxon
- Phragmites australisPhragmites australist0
- Treatment
- inoculation with Glutamicibacter sp.e0
- Interactor
- Glutamicibacter sp.Glutamicibactere0symbiont
- Outcome
- number of leaves and tillerse0
- Direction
- highere0
- Comparator
- non‐inoculated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this adverse effect was mitigated following inoculation with Glutamicibacter sp., which triggered higher number of leaves and tillers, shoot fresh weight/dry weight, and root fresh weight as compared to non‐inoculated plants”
t0“Phragmites australis”
Claim · model-written summary
Under high salinity, inoculation increased shoot fresh and dry weight relative to uninoculated plants.
- Taxon
- Phragmites australisPhragmites australist0
- Treatment
- inoculation with Glutamicibacter sp.e0
- Interactor
- Glutamicibacter sp.Glutamicibactere0symbiont
- Outcome
- shoot fresh weight/dry weighte0
- Direction
- highere0
- Comparator
- non‐inoculated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this adverse effect was mitigated following inoculation with Glutamicibacter sp., which triggered higher number of leaves and tillers, shoot fresh weight/dry weight, and root fresh weight as compared to non‐inoculated plants”
t0“Phragmites australis”
Claim · model-written summary
Under high salinity, inoculation increased root fresh weight relative to uninoculated plants.
- Taxon
- Phragmites australisPhragmites australist0
- Treatment
- inoculation with Glutamicibacter sp.e0
- Interactor
- Glutamicibacter sp.Glutamicibactere0symbiont
- Outcome
- root fresh weighte0
- Direction
- highere0
- Comparator
- non‐inoculated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this adverse effect was mitigated following inoculation with Glutamicibacter sp., which triggered higher number of leaves and tillers, shoot fresh weight/dry weight, and root fresh weight as compared to non‐inoculated plants”
t0“Phragmites australis”
Claim · model-written summary
Salt stress increased shoot malondialdehyde accumulation.
- Taxon
- Phragmites australisPhragmites australist0
- Organ / stage
- shootse0
- Treatment
- Salt stresse0
- Outcome
- accumulation of malondialdehyde (MDA)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress increased the accumulation of malondialdehyde (MDA), polyphenols, total soluble sugars (TSSs), and free proline in shoots”
t0“Phragmites australis”
Claim · model-written summary
Salt stress increased shoot polyphenol accumulation.
- Taxon
- Phragmites australisPhragmites australist0
- Organ / stage
- shootse0
- Treatment
- Salt stresse0
- Outcome
- polyphenolse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress increased the accumulation of malondialdehyde (MDA), polyphenols, total soluble sugars (TSSs), and free proline in shoots”
t0“Phragmites australis”
Claim · model-written summary
Salt stress increased shoot total soluble sugar accumulation.
- Taxon
- Phragmites australisPhragmites australist0
- Organ / stage
- shootse0
- Treatment
- Salt stresse0
- Outcome
- total soluble sugars (TSSs)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress increased the accumulation of malondialdehyde (MDA), polyphenols, total soluble sugars (TSSs), and free proline in shoots”
t0“Phragmites australis”
Claim · model-written summary
Salt stress increased shoot free proline accumulation.
- Taxon
- Phragmites australisPhragmites australist0
- Organ / stage
- shootse0
- Treatment
- Salt stresse0
- Outcome
- free prolinee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress increased the accumulation of malondialdehyde (MDA), polyphenols, total soluble sugars (TSSs), and free proline in shoots”
t0“Phragmites australis”
Claim · model-written summary
Glutamicibacter inoculation further increased shoot polyphenol content.
- Taxon
- Phragmites australisPhragmites australist0
- Treatment
- inoculation with Glutamicibacter sp.e0
- Interactor
- Glutamicibacter sp.Glutamicibactere0symbiont
- Outcome
- shoot polyphenol contente0
- Direction
- further increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the inoculation with Glutamicibacter sp. further increased shoot polyphenol content, while decreasing MDA and free proline contents”
t0“Phragmites australis”
Claim · model-written summary
Glutamicibacter inoculation decreased MDA content.
- Taxon
- Phragmites australisPhragmites australist0
- Treatment
- inoculation with Glutamicibacter sp.e0
- Interactor
- Glutamicibacter sp.Glutamicibactere0symbiont
- Outcome
- MDAe0
- Direction
- decreasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the inoculation with Glutamicibacter sp. further increased shoot polyphenol content, while decreasing MDA and free proline contents”
t0“Phragmites australis”
Claim · model-written summary
Glutamicibacter inoculation decreased free proline content.
- Taxon
- Phragmites australisPhragmites australist0
- Treatment
- inoculation with Glutamicibacter sp.e0
- Interactor
- Glutamicibacter sp.Glutamicibactere0symbiont
- Outcome
- free proline contentse0
- Direction
- decreasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the inoculation with Glutamicibacter sp. further increased shoot polyphenol content, while decreasing MDA and free proline contents”
t0“Phragmites australis”
Claim · model-written summary
Glutamicibacter increased tissue Ca + content.
- Taxon
- Phragmites australisPhragmites australist0
- Treatment
- this bacterial straine0
- Interactor
- Glutamicibacter sp.Glutamicibactert0symbiont
- Outcome
- Ca +e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this bacterial strain increased tissue Ca + and K + content concomitant to lower shoot Na + and root Cl − accumulation”
t0“Glutamicibacter sp. alleviates salt impact on Phragmites australis”
Claim · model-written summary
Glutamicibacter increased tissue K + content.
- Taxon
- Phragmites australisPhragmites australist0
- Treatment
- this bacterial straine0
- Interactor
- Glutamicibacter sp.Glutamicibactert0symbiont
- Outcome
- K + contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this bacterial strain increased tissue Ca + and K + content concomitant to lower shoot Na + and root Cl − accumulation”
t0“Glutamicibacter sp. alleviates salt impact on Phragmites australis”
Claim · model-written summary
Glutamicibacter lowered shoot Na + accumulation.
- Taxon
- Phragmites australisPhragmites australist0
- Treatment
- this bacterial straine0
- Interactor
- Glutamicibacter sp.Glutamicibactert0symbiont
- Outcome
- shoot Na +e0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this bacterial strain increased tissue Ca + and K + content concomitant to lower shoot Na + and root Cl − accumulation”
t0“Glutamicibacter sp. alleviates salt impact on Phragmites australis”
Claim · model-written summary
Glutamicibacter lowered root Cl − accumulation.
- Taxon
- Phragmites australisPhragmites australist0
- Treatment
- this bacterial straine0
- Interactor
- Glutamicibacter sp.Glutamicibactert0symbiont
- Outcome
- root Cl − accumulatione0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this bacterial strain increased tissue Ca + and K + content concomitant to lower shoot Na + and root Cl − accumulation”
t0“Glutamicibacter sp. alleviates salt impact on Phragmites australis”
The same questions in other papers
sodium chloride · growth · Phragmites australis (common reed)Results differ
2 papers in the same direction as this paper · 5 in the opposite direction
- positive
- positive
- positive
4 papers more in this group
See all 8 papers →inoculation · growth · Phragmites australis (common reed)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.