Abstract
Soil samples from the rhizosphere of 6 months old coffee seedling were collected. Phosphate Solubilizing Bacteria (PSB) were selected based on the quantitative ability to solubilize phosphate by measuring the clear zone surrounding the colonies in Pikovskaya’s agar. In total, 26 PSB were isolated. Best 8 isolates (PSB 1, PSB 2, PSB 8, PSB 10, PSB 11, PSB 14, PSB 19, and PSB 20) were selected and phenotypic and biochemical characteristics were carried out. Best four isolates were selected for germination assay, seedling growth experiment and greenhouse experiment. The effect of inoculation of PSB on germination of coffee seeds in vitro was evaluated and the result showed that all isolates (PSB 1, PSB 10, PSB 11, and PSB 20) enhanced germination by 51.72% - 58.82% over uninoculated water control. In seedling growth experiment, isolate PSB 20 isolates significantly enhanced shoot length and shoot fresh weight. In the greenhouse experiment conducted over 5 months, isolates PSB 20 and PSB 1 significantly enhanced coffee seedling shoot length, fresh shoot biomass and fresh root biomass over uninoculated water control plants. PSB 1 and PSB 10 significantly increased chlorophyll content and protein content in the coffee leaves. So, this study suggests bio-inoculants are able to stimulate plant growth, and recommends further experiments at field conditions
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Claims 7
Claim · model-written summary
26 phosphate solubilizing bacteria were isolated from the coffee rhizosphere.
CoffeaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phosphate Solubilizing Bacteria from Rhizosphere of Coffee Plant”
e1“In total, 26 PSB were isolated”
Claim · model-written summary
Inoculation with PSB enhanced germination of coffee seeds in vitro by 51.72% to 58.82% over uninoculated water control.
- Material
- PSB 1, PSB 10, PSB 11, and PSB 20e2
- Treatment
- inoculation of PSBe2
- Interactor
- PSBe2symbiont
- Outcome
- germination of coffee seedse2
- Direction
- enhancede2
- Value
- 51.72% - 58.82%e2
- Comparator
- uninoculated water controle2
- Setting
- in vitroe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phosphate Solubilizing Bacteria from Rhizosphere of Coffee Plant”
e2“The effect of inoculation of PSB on germination of coffee seeds in vitro was evaluated and the result showed that all isolates (PSB 1, PSB 10, PSB 11, and PSB 20) enhanced germination by 51.72% - 58.82% over uninoculated water control”
Claim · model-written summary
Isolate PSB 20 significantly enhanced shoot length and shoot fresh weight of coffee seedlings in seedling growth experiment.
- Treatment
- isolate PSB 20e3
- Interactor
- PSB 20e3symbiont
- Outcome
- shoot length and shoot fresh weighte3
- Direction
- enhancede3
- Setting
- seedling growth experimente3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t1“Growth and Development of Coffee Seedlings”
e3“In seedling growth experiment, isolate PSB 20 isolates significantly enhanced shoot length and shoot fresh weight”
Claim · model-written summary
Isolates PSB 20 and PSB 1 significantly enhanced shoot length, fresh shoot biomass and fresh root biomass of coffee seedlings in the greenhouse.
- Treatment
- isolates PSB 20 and PSB 1e4
- Interactor
- PSB 20 and PSB 1e4symbiont
- Outcome
- shoot length, fresh shoot biomass and fresh root biomasse4
- Direction
- enhancede4
- Comparator
- uninoculated water control plantse4
- Setting
- greenhouse experimente4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t1“Growth and Development of Coffee Seedlings”
e4“In the greenhouse experiment conducted over 5 months, isolates PSB 20 and PSB 1 significantly enhanced coffee seedling shoot length, fresh shoot biomass and fresh root biomass over uninoculated water control plants”
Claim · model-written summary
PSB 1 and PSB 10 significantly increased chlorophyll content and protein content in coffee leaves.
- Organ / stage
- coffee leavese5
- Treatment
- PSB 1 and PSB 10e5
- Interactor
- PSB 1 and PSB 10e5symbiont
- Outcome
- chlorophyll content and protein contente5
- Direction
- increasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t1“Growth and Development of Coffee Seedlings”
e5“PSB 1 and PSB 10 significantly increased chlorophyll content and protein content in the coffee leaves”
Claim · model-written summary
Bio-inoculants are able to stimulate coffee seedling growth.
- Outcome
- stimulate plant growthe6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t1“Growth and Development of Coffee Seedlings”
e6“bio-inoculants are able to stimulate plant growth”
Claim · model-written summary
Further experiments under field conditions are recommended for the bio-inoculants on coffee seedlings.
- Outcome
- further experiments at field conditionse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t1“Growth and Development of Coffee Seedlings”
e6“bio-inoculants are able to stimulate plant growth, and recommends further experiments at field conditions”
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