Abstract
The aim of this study was to determine the influence of selected halotolerant endophytic bacteria isolated from the roots of Salicornia europaea on the growth parameters of Beta vulgaris under different concentrations of salinity. Two endophytic strains were selected as inocula for the pot experiment: Pseudomonas sp. ISE-12 (B1) and Xanthomonadales sp. CSE-34 (B2). Surface-sterilised seeds were incubated in the bacterial inoculation suspensions before sowing and cultivated in a sterile mixture of sand and vermiculite (1:1). Six salinity treatments were taken into account: 0, 50, 100, 150, 200 and 300 mM NaCl. Inoculation of seeds with B1 and B2 positively affected germination percentage and germination index and shortened mean germination time, which led to a quickening of the growth stages of seedlings. After 42 days inoculated plants had, in general, a greater root length, higher dry biomass, lower tissue water content and lower specific leaf area compared with the control. While the positive effect of B2 bacteria was visible only at low salinity, strain B1 stimulated plant growth at higher salinities (200 and 300 mM NaCl). We suggest that the superior growth promotion observed for B1 may be related to the higher metabolic activity of these bacteria.
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Claims 7
Claim · model-written summary
Inoculation with Pseudomonas sp. ISE-12 improved germination percentage and index and shortened mean germination time.
- Taxon
- Beta vulgaris
Beta vulgarise2 - Treatment
- Inoculation of seeds with B1 and B2e1
- Interactor
- Pseudomonas sp. ISE-12e0symbiont
- Outcome
- germination percentage and germination indexe1
- Direction
- positively affectede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pseudomonas sp. ISE-12 (B1)”
e1“Inoculation of seeds with B1 and B2 positively affected germination percentage and germination index and shortened mean germination time”
e2“growth parameters of Beta vulgaris”
Claim · model-written summary
Inoculation with Xanthomonadales sp. CSE-34 improved germination measures and shortened germination time.
- Taxon
- Beta vulgarisBeta vulgarise2
- Treatment
- Inoculation of seeds with B1 and B2e1
- Interactor
- Xanthomonadales sp. CSE-34e0symbiont
- Outcome
- mean germination timee1
- Direction
- shortenede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Xanthomonadales sp. CSE-34 (B2)”
e1“Inoculation of seeds with B1 and B2 positively affected germination percentage and germination index and shortened mean germination time”
e2“growth parameters of Beta vulgaris”
Claim · model-written summary
Inoculated plants had longer roots and greater dry biomass after 42 days than controls.
- Taxon
- Beta vulgarisBeta vulgarise1
- Treatment
- inoculated plantse0
- Outcome
- root length, higher dry biomasse0
- Direction
- greatere0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After 42 days inoculated plants had, in general, a greater root length, higher dry biomass, lower tissue water content and lower specific leaf area compared with the control”
e1“growth parameters of Beta vulgaris”
Claim · model-written summary
Inoculated plants had lower tissue water content and specific leaf area after 42 days than controls.
- Taxon
- Beta vulgarisBeta vulgarise1
- Treatment
- inoculated plantse0
- Outcome
- tissue water content and lower specific leaf areae0
- Direction
- lowere0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After 42 days inoculated plants had, in general, a greater root length, higher dry biomass, lower tissue water content and lower specific leaf area compared with the control”
e1“growth parameters of Beta vulgaris”
Claim · model-written summary
The benefit from strain B2 appeared only at low salinity.
- Taxon
- Beta vulgarisBeta vulgarise2
- Interactor
- Xanthomonadales sp. CSE-34e1symbiont
- Outcome
- positive effect of B2 bacteriae0
- Qualifier
- only at low salinitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“positive effect of B2 bacteria was visible only at low salinity”
e1“Xanthomonadales sp. CSE-34 (B2)”
e2“growth parameters of Beta vulgaris”
Claim · model-written summary
Strain B1 stimulated plant growth at 200 and 300 mM NaCl.
- Taxon
- Beta vulgarisBeta vulgarise2
- Treatment
- strain B1e0
- Interactor
- Pseudomonas sp. ISE-12e1symbiont
- Outcome
- plant growthe0
- Direction
- stimulatede0
- Qualifier
- higher salinities (200 and 300 mM NaCl)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“strain B1 stimulated plant growth at higher salinities (200 and 300 mM NaCl)”
e1“Pseudomonas sp. ISE-12 (B1)”
e2“growth parameters of Beta vulgaris”
Claim · model-written summary
The authors suggest B1 superior growth promotion may relate to its higher metabolic activity.
- Taxon
- Beta vulgarisBeta vulgarise2
- Interactor
- Pseudomonas sp. ISE-12e1symbiont
- Outcome
- superior growth promotione0
- Qualifier
- higher metabolic activity of these bacteriae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“superior growth promotion observed for B1 may be related to the higher metabolic activity of these bacteria”
e1“Pseudomonas sp. ISE-12 (B1)”
e2“growth parameters of Beta vulgaris”
The same questions in other papers
inoculation · growth · Beta vulgaris (beet)Positive and negative results
24 papers in the same direction as this paper · 6 in the opposite direction
- positive
- negative
- negative
27 papers more in this group
See all 31 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.