Abstract
Plant-associated bacteria are known to improve plant growth and play a major role in the development of plants. The present study is concerned with the isolation of two auxin-producing plant growth-promoting bacteria (PGPB). On the basis of 16S rRNA sequencing, both of the strains are identified as Bacillus sp. Maximum auxin production was observed at 37 °C after 48 h of incubation. Increase in tryptophan concentration stimulated auxin production by the isolates. High-performance liquid chromatography analysis showed that the bacterial auxin exhibited similar retention time as the standard indole-3-acetic acid (IAA). Sprouts of Solanum tuberosum var. Desiree were inoculated with the isolates. Comparison of various growth parameters of inoculated plants with non-inoculated plants revealed the improvement of plant growth by bacterial inoculation. Almost 40 and 35 % increase in shoot length with P4 and S6 inoculation, respectively, was observed. Considerable improvement in root growth was observed with an increase in the number and length of roots. On the basis of the above findings, it is concluded that the plant growth-promoting Bacillus strains affect S. tuberosum beneficially, resulting in improved plant growth.
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Claims 8
Claim · model-written summary
On the basis of 16S rRNA sequencing, both auxin-producing isolates were identified as Bacillus sp.
Verbatim
e0“On the basis of 16S rRNA sequencing, both of the strains are identified as Bacillus sp.”
Claim · model-written summary
Maximum auxin production by the Bacillus isolates was observed at 37 °C after 48 h of incubation.
Verbatim
e0“Maximum auxin production was observed at 37 °C after 48 h of incubation”
t0“Bacillus sp.”
Claim · model-written summary
Increased tryptophan concentration stimulated auxin production by the Bacillus isolates.
- Taxon
- Bacillus sp.t0
- Treatment
- Increase in tryptophan concentratione0
- Outcome
- auxin productione0
- Direction
- stimulatede0
Not reportedComparator
Verbatim
e0“Increase in tryptophan concentration stimulated auxin production by the isolates”
t0“Bacillus sp.”
Claim · model-written summary
The bacterial auxin showed a retention time in HPLC similar to that of standard indole-3-acetic acid (IAA).
Verbatim
e0“the bacterial auxin exhibited similar retention time as the standard indole-3-acetic acid (IAA)”
t0“Bacillus sp.”
Claim · model-written summary
Inoculated potato plants showed improved plant growth compared with non-inoculated plants.
- Taxon
- Solanum tuberosum
Solanum tuberosume0 - Material
- Desireee0
- Treatment
- bacterial inoculatione1
- Interactor
- Bacillus sp.t0symbiont
- Outcome
- plant growthe1
- Direction
- improvemente1
- Comparator
- non-inoculated plantse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sprouts of Solanum tuberosum var. Desiree were inoculated with the isolates”
e1“Comparison of various growth parameters of inoculated plants with non-inoculated plants revealed the improvement of plant growth by bacterial inoculation”
t0“Bacillus sp.”
Claim · model-written summary
Inoculation with isolate P4 increased shoot length of Solanum tuberosum by about 40 %.
- Taxon
- Solanum tuberosumSolanum tuberosume1
- Treatment
- P4e0
- Interactor
- Bacillus sp.t0symbiont
- Outcome
- shoot lengthe0
- Direction
- increasee0
- Value
- Almost 40e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Almost 40 and 35 % increase in shoot length with P4 and S6 inoculation, respectively”
e1“Sprouts of Solanum tuberosum var. Desiree were inoculated with the isolates”
t0“Bacillus sp.”
Claim · model-written summary
Inoculation with isolate S6 increased shoot length of Solanum tuberosum by about 35 %.
- Taxon
- Solanum tuberosumSolanum tuberosume1
- Treatment
- S6 inoculatione0
- Interactor
- Bacillus sp.t0symbiont
- Outcome
- shoot lengthe0
- Direction
- increasee0
- Value
- 35 %e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Almost 40 and 35 % increase in shoot length with P4 and S6 inoculation, respectively”
e1“Sprouts of Solanum tuberosum var. Desiree were inoculated with the isolates”
t0“Bacillus sp.”
Claim · model-written summary
Bacterial inoculation improved root growth of Solanum tuberosum, with an increase in the number and length of roots.
- Taxon
- Solanum tuberosumSolanum tuberosume1
- Treatment
- inoculated with the isolatese1
- Interactor
- Bacillus sp.t0symbiont
- Outcome
- number and length of rootse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Considerable improvement in root growth was observed with an increase in the number and length of roots”
e1“Sprouts of Solanum tuberosum var. Desiree were inoculated with the isolates”
t0“Bacillus sp.”
The same questions in other papers
inoculation · growth · Solanum tuberosum (potato)Positive and negative results
81 papers in the same direction as this paper · 22 in the opposite direction
- negative
- negative
- no effect
100 papers more in this group
See all 104 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.