Abstract
Endophytes are an important constituent of sustainable agriculture because of their ability to produce a large number of agriculturally important metabolites. A salt-tolerant fluorescent green pigment-producing endophytic bacterium was isolated on 2.5% NaCl-supplemented nutrient agar from the leaf samples of Zanthoxylum alatum Roxb. The isolate Z1B4 was identified as Pseudomonas fluorescens based on morphological features, fatty acid methyl ester analysis, biochemical tests, and 16S rRNA gene sequencing. P. fluorescens Z1B4 showed positive results for tricalcium phosphate solubilization; 1-aminocyclopropane-1-carboxylate (ACC) deaminase activity; and production of auxins, siderophores, hydrogen cyanide, and ammonia. P. fluorescens Z1B4 also showed strong antagonistic activity against Curvularia lunata (MTCC 283), Fusarium verticillioides (MTCC 3322), and Alternaria alternata (MTCC 1362) and exhibited stress tolerance to a wide range of temperature and pH and concentrations of NaCl and calcium salts. Under natural conditions, following inoculation with the isolate Z1B4, a significant increase in the growth of pea and maize test plants in pots was observed compared to that of uninoculated control plants. The rifampicin-resistant mutant Z1B4Rif was recovered from the roots, shoots, and leaves of the test plants, indicating that the isolated endophytic bacterium can grow well within different plant tissues. The present study indicated that the endophytic bacterium P. fluorescens Z1B4 can be used as a bacterial inoculant in stressed environments for sustainable agriculture.
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Claims 5
Claim · model-written summary
Inoculation with Z1B4 significantly increased pea growth in pots.
- Taxon
- pea
Lathyrus oleraceuse0 - Treatment
- inoculation with the isolate Z1B4e0
- Interactor
- Pseudomonas fluorescens
.JPG?width=60)
Pseudomonas fluorescense1symbiont - Outcome
- growth of peae0
- Direction
- increasee0
- Comparator
- uninoculated control plantse0
- Setting
- potse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.JPG?width=500)
Verbatim
e0“following inoculation with the isolate Z1B4, a significant increase in the growth of pea and maize test plants in pots was observed compared to that of uninoculated control plants.”
e1“The isolate Z1B4 was identified as Pseudomonas fluorescens”
Claim · model-written summary
Inoculation with Z1B4 significantly increased maize growth in pots.
- Treatment
- inoculation with the isolate Z1B4e0
- Interactor
- Pseudomonas fluorescensPseudomonas fluorescense1symbiont
- Outcome
- maize test plantse0
- Direction
- increasee0
- Comparator
- uninoculated control plantse0
- Setting
- potse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“following inoculation with the isolate Z1B4, a significant increase in the growth of pea and maize test plants in pots was observed compared to that of uninoculated control plants.”
e1“The isolate Z1B4 was identified as Pseudomonas fluorescens”
Claim · model-written summary
The Z1B4Rif mutant was recovered from roots, shoots and leaves of test plants.
- Taxon
- pea and maizeLathyrus oleraceus
Zea mayse1 - Interactor
- Z1B4Rife0symbiont
- Outcome
- recovered from the roots, shoots, and leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The rifampicin-resistant mutant Z1B4Rif was recovered from the roots, shoots, and leaves of the test plants”
e1“growth of pea and maize test plants”
Claim · model-written summary
Pseudomonas Z1B4 showed phosphate solubilization, ACC deaminase and several metabolite productions.
- Taxon
- Zanthoxylum alatum Roxb.
Zanthoxylum alatume1 - Interactor
- P. fluorescens Z1B4Pseudomonas fluorescense0symbiont
- Outcome
- tricalcium phosphate solubilization; 1-aminocyclopropane-1-carboxylate (ACC) deaminase activitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P. fluorescens Z1B4 showed positive results for tricalcium phosphate solubilization; 1-aminocyclopropane-1-carboxylate (ACC) deaminase activity; and production of auxins, siderophores, hydrogen cyanide, and ammonia.”
e1“Zanthoxylum alatum Roxb.”
Claim · model-written summary
Pseudomonas Z1B4 antagonized three fungal pathogens.
- Taxon
- Zanthoxylum alatum Roxb.Zanthoxylum alatume1
- Interactor
- Curvularia lunata
Curvularia lunatae0pathogen - Second interactor
- P. fluorescens Z1B4Pseudomonas fluorescense0biocontrol_agent
- Outcome
- strong antagonistic activitye0
- Qualifier
- Fusarium verticillioides (MTCC 3322), and Alternaria alternata (MTCC 1362)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P. fluorescens Z1B4 also showed strong antagonistic activity against Curvularia lunata (MTCC 283), Fusarium verticillioides (MTCC 3322), and Alternaria alternata (MTCC 1362)”
e1“Zanthoxylum alatum Roxb.”
The same questions in other papers
inoculation · Pseudomonas fluorescens · Zea mays (maize)Positive and negative results
6 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
4 papers more in this group
See all 8 papers →inoculation · Pseudomonas fluorescens · Lathyrus oleraceus (pea)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.