Abstract
A total of 24 morphologically distinct salt-tolerant bacteria were isolated from the tomato rhizosphere soil and tested in vitro against Pythium aphanidermatum, causing damping-off disease in tomato. Among them, five bacterial isolates viz., BTR1.0, BTR1.1, BTR4.4, BTR7.0 and BTR8.6 were found to inhibit the mycelial growth of P. aphanidermatum. The maximum antagonistic effect was shown by BTR1.0 followed by BTR7.0 and BTR1.1. Based on the MALDI Biotyper analysis, these bacterial isolates were identified as Serratia marcescens (BTR1.0 and BTR1.1), Pseudomonas aeruginosa (BTR7.0 and BTR8.6) and Alcaligenes faecalis (BTR4.4). Analysis of plant growth stimulating activity of bacterial strains revealed that A. faecalis BTR4.4 recorded the highest vigour index followed by S. marcescens BTR1.0. The biocontrol activity of bacterial antagonists against tomato damping-off was tested under salt-water irrigation. Among the bacterial strains tested, S. marcescens BTR1.1 was found to be highly effective under non-saline water irrigation, which suppressed the disease by 68% compared to infected control. However, at 50 mM NaCl concentration, S. marcescens strain BTR1.0, P. aeruginosa strain BTR7.0 and A. faecalis BTR4.4 provided a significant level of control of the disease. At 100 mM NaCl concentration, no significant effect of the bacterial strains on the disease incidence was observed.
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Claims 9
Claim · model-written summary
Five bacterial isolates inhibited Pythium aphanidermatum mycelial growth.
- Taxon
- tomato
Solanum lycopersicumt0 - Interactor
- P. aphanidermatumPythium aphanidermatume0pathogen
- Outcome
- mycelial growth of P. aphanidermatume0
- Direction
- inhibite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“five bacterial isolates viz., BTR1.0, BTR1.1, BTR4.4, BTR7.0 and BTR8.6 were found to inhibit the mycelial growth of P. aphanidermatum”
t0“tomato rhizosphere”
Claim · model-written summary
BTR1.0 had the maximum antagonistic effect, followed by BTR7.0 and BTR1.1.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- BTR1.0e0
- Outcome
- antagonistic effecte0
- Direction
- maximume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The maximum antagonistic effect was shown by BTR1.0 followed by BTR7.0 and BTR1.1”
t0“tomato rhizosphere”
Claim · model-written summary
The tested antagonistic isolates were identified as Serratia marcescens, Pseudomonas aeruginosa, and Alcaligenes faecalis.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- bacterial isolates were identifiede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“these bacterial isolates were identified as Serratia marcescens (BTR1.0 and BTR1.1), Pseudomonas aeruginosa (BTR7.0 and BTR8.6) and Alcaligenes faecalis (BTR4.4)”
t0“tomato rhizosphere”
Claim · model-written summary
Alcaligenes faecalis BTR4.4 produced the highest plant vigour index, followed by Serratia marcescens BTR1.0.
- Taxon
- tomatoSolanum lycopersicumt0
- Interactor
- A. faecalis BTR4.4
Alcaligenes faecalise0biocontrol_agent - Outcome
- vigour indexe0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A. faecalis BTR4.4 recorded the highest vigour index followed by S. marcescens BTR1.0”
t0“tomato rhizosphere”
Claim · model-written summary
Serratia marcescens BTR1.1 suppressed tomato damping-off by 68% relative to infected control under non-saline irrigation.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- S. marcescens BTR1.1e0
- Interactor
- S. marcescens BTR1.1
Serratia marcescense0biocontrol_agent - Outcome
- diseasee0
- Direction
- suppressede0
- Value
- 68%e0
- Qualifier
- non-saline water irrigatione0
- Comparator
- infected controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“S. marcescens BTR1.1 was found to be highly effective under non-saline water irrigation, which suppressed the disease by 68% compared to infected control”
t0“tomato rhizosphere”
Claim · model-written summary
Serratia marcescens BTR1.0 significantly controlled disease at 50 mM NaCl.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- S. marcescens strain BTR1.0e0
- Interactor
- S. marcescens strain BTR1.0Serratia marcescense0biocontrol_agent
- Outcome
- diseasee0
- Direction
- controle0
- Qualifier
- 50 mM NaCl concentratione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at 50 mM NaCl concentration, S. marcescens strain BTR1.0, P. aeruginosa strain BTR7.0 and A. faecalis BTR4.4 provided a significant level of control of the disease”
t0“tomato rhizosphere”
Claim · model-written summary
Pseudomonas aeruginosa BTR7.0 significantly controlled disease at 50 mM NaCl.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- P. aeruginosa strain BTR7.0e0
- Interactor
- P. aeruginosa strain BTR7.0
Pseudomonas aeruginosae0biocontrol_agent - Outcome
- diseasee0
- Direction
- controle0
- Qualifier
- 50 mM NaCl concentratione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at 50 mM NaCl concentration, S. marcescens strain BTR1.0, P. aeruginosa strain BTR7.0 and A. faecalis BTR4.4 provided a significant level of control of the disease”
t0“tomato rhizosphere”
Claim · model-written summary
Alcaligenes faecalis BTR4.4 significantly controlled disease at 50 mM NaCl.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- A. faecalis BTR4.4e0
- Interactor
- A. faecalis BTR4.4Alcaligenes faecalise0biocontrol_agent
- Outcome
- diseasee0
- Direction
- controle0
- Qualifier
- 50 mM NaCl concentratione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at 50 mM NaCl concentration, S. marcescens strain BTR1.0, P. aeruginosa strain BTR7.0 and A. faecalis BTR4.4 provided a significant level of control of the disease”
t0“tomato rhizosphere”
Claim · model-written summary
Bacterial strains had no significant effect on disease incidence at 100 mM NaCl.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- bacterial strainse0
- Outcome
- disease incidencee0
- Qualifier
- 100 mM NaCl concentratione0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 100 mM NaCl concentration, no significant effect of the bacterial strains on the disease incidence was observed”
t0“tomato rhizosphere”
The same questions in other papers
Serratia marcescens · disease · Solanum lycopersicum (tomato)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
Pseudomonas aeruginosa · disease · Solanum lycopersicum (tomato)Results agree
2 papers in the same direction as this paper
- positive
- positive
inoculation · disease · Solanum lycopersicum (tomato)Positive and negative results
129 papers in the same direction as this paper · 136 in the opposite direction
- positive
- positive
- positive
262 papers more in this group
See all 266 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.