Abstract
AIMS: The aim of this study was to investigate the potential of bacterial strains of Bacillus, Pseudomonas, Escherichia, Micrococcus and Staphylococcus genera associated with wild herbaceous flora to enhance endogenous indole-3-acetic acid (IAA) content and growth of Triticum aestivum var. Inqalab-91. METHODS AND RESULTS: Gas chromatography and mass spectrometric (GC-MS) analysis revealed that bacterial strains produced 0.6-8.22 microg IAA ml(-1) in the presence of L-tryptophan. Plant microbe experiments showed a significant positive correlation between auxin production by bacterial strains and endogenous IAA content of T. aestivum for GC-MS (r = 0.618; P = 0.05) and colorimetric analysis (r = 0.693; P = 0.01). Similarly, highly significant positive correlation for shoot length (r = 0.627; P = 0.01) and shoot fresh weight (r = 0.626; P = 0.01) was observed with auxin production under axenic conditions. Bacterial inoculations also enhanced shoot length (up to 29.16%), number of tillers (up to 97.35%), spike length (up to 25.20%) and seed weight (up to 13.70%) at final harvest. CONCLUSIONS: Bacterial strains have the ability to increase the endogenous IAA content and growth of T. aestivum var. Inqalab-91. SIGNIFICANCE AND IMPACT OF THE STUDY: Microbial strains of wild herbaceous flora can be effectively used to enhance the growth and yield of agronomically important crops.
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Claims 8
Claim · model-written summary
Bacterial auxin production correlated positively with wheat endogenous IAA by GC-MS.
- Taxon
- T. aestivum
Triticum aestivume0 - Interactor
- bacterial strainse0symbiont
- Compound
- auxine0
- Outcome
- endogenous IAA contente0
- Direction
- positivee0
- Value
- r = 0.618e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant positive correlation between auxin production by bacterial strains and endogenous IAA content of T. aestivum for GC-MS (r = 0.618; P = 0.05)”
Claim · model-written summary
Bacterial auxin production correlated positively with wheat IAA by colorimetric analysis.
- Taxon
- T. aestivumTriticum aestivume0
- Interactor
- bacterial strainse0symbiont
- Compound
- auxine0
- Outcome
- endogenous IAA contente0
- Direction
- positivee0
- Value
- r = 0.693e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“positive correlation between auxin production by bacterial strains and endogenous IAA content of T. aestivum for GC-MS (r = 0.618; P = 0.05) and colorimetric analysis (r = 0.693; P = 0.01)”
Claim · model-written summary
Bacterial auxin production correlated positively with wheat shoot length.
- Taxon
- Triticum aestivumL.Triticum aestivumt0
- Compound
- auxine0
- Outcome
- shoot lengthe0
- Direction
- positivee0
- Value
- r = 0.627e0
- Setting
- axenic conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highly significant positive correlation for shoot length (r = 0.627; P = 0.01) and shoot fresh weight (r = 0.626; P = 0.01) was observed with auxin production under axenic conditions”
t0“Triticum aestivumL.”
Claim · model-written summary
Bacterial auxin production correlated positively with wheat shoot fresh weight.
- Taxon
- Triticum aestivumL.Triticum aestivumt0
- Compound
- auxine0
- Outcome
- shoot fresh weighte0
- Direction
- positivee0
- Value
- r = 0.626e0
- Setting
- axenic conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highly significant positive correlation for shoot length (r = 0.627; P = 0.01) and shoot fresh weight (r = 0.626; P = 0.01) was observed with auxin production under axenic conditions”
t0“Triticum aestivumL.”
Claim · model-written summary
Bacterial inoculation enhanced wheat shoot length by up to 29.16%.
- Taxon
- Triticum aestivumL.Triticum aestivumt0
- Treatment
- Bacterial inoculationse0
- Interactor
- Bacteriale0symbiont
- Outcome
- shoot lengthe0
- Direction
- enhancede0
- Value
- up to 29.16%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bacterial inoculations also enhanced shoot length (up to 29.16%), number of tillers (up to 97.35%), spike length (up to 25.20%) and seed weight (up to 13.70%) at final harvest”
t0“Triticum aestivumL.”
Claim · model-written summary
Bacterial inoculation enhanced wheat tiller number by up to 97.35%.
- Taxon
- Triticum aestivumL.Triticum aestivumt0
- Treatment
- Bacterial inoculationse0
- Interactor
- Bacteriale0symbiont
- Outcome
- number of tillerse0
- Direction
- enhancede0
- Value
- up to 97.35%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bacterial inoculations also enhanced shoot length (up to 29.16%), number of tillers (up to 97.35%), spike length (up to 25.20%) and seed weight (up to 13.70%) at final harvest”
t0“Triticum aestivumL.”
Claim · model-written summary
Bacterial inoculation enhanced wheat spike length by up to 25.20%.
- Taxon
- Triticum aestivumL.Triticum aestivumt0
- Treatment
- Bacterial inoculationse0
- Interactor
- Bacteriale0symbiont
- Outcome
- spike lengthe0
- Direction
- enhancede0
- Value
- up to 25.20%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bacterial inoculations also enhanced shoot length (up to 29.16%), number of tillers (up to 97.35%), spike length (up to 25.20%) and seed weight (up to 13.70%) at final harvest”
t0“Triticum aestivumL.”
Claim · model-written summary
Bacterial inoculation enhanced wheat seed weight by up to 13.70%.
- Taxon
- Triticum aestivumL.Triticum aestivumt0
- Treatment
- Bacterial inoculationse0
- Interactor
- Bacteriale0symbiont
- Outcome
- seed weighte0
- Direction
- enhancede0
- Value
- up to 13.70%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bacterial inoculations also enhanced shoot length (up to 29.16%), number of tillers (up to 97.35%), spike length (up to 25.20%) and seed weight (up to 13.70%) at final harvest”
t0“Triticum aestivumL.”
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See all 614 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.