Abstract
Plant Growth Promoting Rhizobacteria (PGPR) are beneficial bacteria that colonize the plant root and enhance the plant growth. The use of PGPR is steadily increasing in agriculture and offers an attractive way to replace chemical fertilizers, pesticides and supplements. In the present study, PGPR were isolated from 18 different rhizosphere soil samples of coastal sand dune plants, belonging to the genus Ipomoea sp. collected from the Chennai coastal area. For isolation of bacteria from soil samples, pour plate technique was followed. The rhizobacterial population was ranged from 4.4 x 10(6)-7.5 x 10(7) CFU g(-1). From that, 46 morphologically different bacterial strains were isolated. Among 46, 18 strains exhibited the production of Indole Acetic Acid. (IAA). When screened for phosphate solubilzing activity, six strains showed maximum activity. All these selected six strains were screened for seed germination among which these two strains (AMET1136 and AMET 1148) showed remarkable increase in the seed germination of black gram and green gram. For plant growth promotion, three types of treatments namely, seed bacterization, soil drenching and mixed (seed+soil) were carried out to check the potential of these two strains. Among that one strain which was identified as Pseudomonas sp. AMET1148 showed remarkable and significant increase in shoot length and root length of the tested plants. The study concluded that PGPR from coastal sand dund plants can be developed as plant growth promoters in agricultural crops.
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Claims 9
Claim · model-written summary
Rhizobacterial populations ranged from 4.4 x 10(6) to 7.5 x 10(7) CFU g(-1).
IpomoeaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The rhizobacterial population was ranged from 4.4 x 10(6)-7.5 x 10(7) CFU g(-1)”
e7“belonging to the genus Ipomoea sp.”
Claim · model-written summary
Forty-six morphologically distinct bacterial strains were isolated.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“46 morphologically different bacterial strains were isolated”
e7“belonging to the genus Ipomoea sp.”
Claim · model-written summary
Eighteen bacterial strains produced Indole Acetic Acid.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“18 strains exhibited the production of Indole Acetic Acid”
e7“belonging to the genus Ipomoea sp.”
Claim · model-written summary
Six strains showed maximum phosphate solubilizing activity.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“six strains showed maximum activity”
e7“belonging to the genus Ipomoea sp.”
Claim · model-written summary
AMET1136 increased black gram seed germination.
- Taxon
- black gram
Vigna mungoe0 - Treatment
- AMET1136e0
- Interactor
- AMET1136e0symbiont
- Outcome
- seed germinatione0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“these two strains (AMET1136 and AMET 1148) showed remarkable increase in the seed germination of black gram and green gram”
Claim · model-written summary
AMET1136 increased green gram seed germination.
- Taxon
- green gram
.jpg?width=60)
Vigna radiata var. radiatae0 - Treatment
- AMET1136e0
- Interactor
- AMET1136e0symbiont
- Outcome
- seed germinatione0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“these two strains (AMET1136 and AMET 1148) showed remarkable increase in the seed germination of black gram and green gram”
Claim · model-written summary
AMET 1148 increased black gram seed germination.
- Taxon
- black gramVigna mungoe0
- Treatment
- AMET 1148e0
- Interactor
- AMET 1148e0symbiont
- Outcome
- seed germinatione0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“these two strains (AMET1136 and AMET 1148) showed remarkable increase in the seed germination of black gram and green gram”
Claim · model-written summary
AMET 1148 increased green gram seed germination.
- Taxon
- green gramVigna radiata var. radiatae0
- Treatment
- AMET 1148e0
- Interactor
- AMET 1148e0symbiont
- Outcome
- seed germinatione0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“these two strains (AMET1136 and AMET 1148) showed remarkable increase in the seed germination of black gram and green gram”
Claim · model-written summary
Pseudomonas sp. AMET1148 significantly increased shoot and root length in tested plants.
- Taxon
- black gramVigna mungoe7
- Treatment
- Pseudomonas sp. AMET1148e0
- Interactor
- Pseudomonas sp. AMET1148e0symbiont
- Outcome
- shoot length and root lengthe0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pseudomonas sp. AMET1148 showed remarkable and significant increase in shoot length and root length of the tested plants”
e1“black gram and green gram”
e7“seed germination of black gram and green gram”
The same questions in other papers
Pseudomonas · growth · Vigna mungo (black gram)Results agree
2 papers in the same direction as this paper
- 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.