Abstract
Acidotolerant Streptomyces sp. MBRL 10 isolated from limestone deposit site on Gauze’s medium No. 1 (pH 5.3) showed significant antagonism against the tested fungal pathogens. It exhibited the highest mycelial growth inhibition by diffusible and volatile compound(s) production against Rhizoctonia solani. Culture filtrates also exhibited significant inhibition zone but the inhibition activities vanished when sterilized. The strain produced chitinase, β-1,3-glucanase, lipase, protease and ammonia but not β-1,4-glucanase. It could produce 25 μg/ml of indole acetic acid, solubilize up to 140 μg/ml of phosphate with a concomitant decrease in pH of the medium. The bioactive actinomycete strain produced hydroxamate type of siderophore. Casamino acid was found to be the best medium for siderophore production (87% siderophore units). MBRL 10 showed the highest rice seedlings vigor index corresponding to an inoculum size of 0.3 × 108 cfu/ml. Strain treated rice seeds at an inoculum size of 0.3 × 108 cfu/ml showed higher germination percentage and significantly enhanced (P ⩽ 0.05) the growth of seedlings. Strain treated rice seedlings challenged with pathogens also exhibited higher germination percentages and significantly enhanced (P ⩽ 0.05) growth over seedlings challenged with pathogen alone in the absence of the bioinoculant. Rice plants treated with the strain significantly promote (P ⩽ 0.05) the growth under nethouse conditions.
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Claims 15
Claim · model-written summary
The isolate showed significant antagonism against tested fungal pathogens.
- Taxon
- rice plants
Oryza sativat0 - Interactor
- fungal pathogense0pathogen
- Second interactor
- Streptomyces sp. MBRL 10
Streptomyces sp. MBRL 10e0biocontrol_agent - Outcome
- antagonism against the tested fungal pathogense0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice plants”
e0“Acidotolerant Streptomyces sp. MBRL 10 isolated from limestone deposit site on Gauze’s medium No. 1 (pH 5.3) showed significant antagonism against the tested fungal pathogens.”
Claim · model-written summary
The isolate had its highest mycelial growth inhibition against Rhizoctonia solani through diffusible and volatile compounds.
- Taxon
- rice plantsOryza sativat0
- Interactor
- Rhizoctonia solani
Rhizoctonia solanie0pathogen - Outcome
- mycelial growth inhibitione0
- Direction
- higheste0
- Qualifier
- diffusible and volatile compound(s) productione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice plants”
e0“It exhibited the highest mycelial growth inhibition by diffusible and volatile compound(s) production against Rhizoctonia solani.”
Claim · model-written summary
Culture filtrates significantly inhibited fungal growth, but sterilization removed that activity.
- Taxon
- rice plantsOryza sativat0
- Outcome
- inhibition zonee0
- Qualifier
- when sterilizede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice plants”
e0“Culture filtrates also exhibited significant inhibition zone but the inhibition activities vanished when sterilized.”
Claim · model-written summary
The isolate produced chitinase, β-1,3-glucanase, lipase, protease and ammonia, but not β-1,4-glucanase.
- Taxon
- rice plantsOryza sativat0
- Outcome
- chitinase, β-1,3-glucanase, lipase, protease and ammonia but not β-1,4-glucanasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice plants”
e0“The strain produced chitinase, β-1,3-glucanase, lipase, protease and ammonia but not β-1,4-glucanase.”
Claim · model-written summary
The isolate produced 25 μg/ml of indole acetic acid.
- Taxon
- rice plantsOryza sativat0
- Outcome
- indole acetic acide0
- Value
- 25 μg/mle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice plants”
e0“It could produce 25 μg/ml of indole acetic acid, solubilize up to 140 μg/ml of phosphate with a concomitant decrease in pH of the medium.”
Claim · model-written summary
The isolate solubilized up to 140 μg/ml of phosphate.
- Taxon
- rice plantsOryza sativat0
- Outcome
- phosphatee0
- Value
- 140 μg/mle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice plants”
e0“It could produce 25 μg/ml of indole acetic acid, solubilize up to 140 μg/ml of phosphate with a concomitant decrease in pH of the medium.”
Claim · model-written summary
Phosphate solubilization was accompanied by a decrease in medium pH.
- Taxon
- rice plantsOryza sativat0
- Compound
- phosphatee0
- Outcome
- pH of the mediume0
- Direction
- decreasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice plants”
e0“solubilize up to 140 μg/ml of phosphate with a concomitant decrease in pH of the medium.”
Claim · model-written summary
The strain produced a hydroxamate type siderophore.
- Taxon
- rice plantsOryza sativat0
- Outcome
- hydroxamate type of siderophoree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice plants”
e0“The bioactive actinomycete strain produced hydroxamate type of siderophore.”
Claim · model-written summary
Casamino acid was the best medium for siderophore production, at 87% siderophore units.
- Taxon
- rice plantsOryza sativat0
- Outcome
- siderophore productione0
- Direction
- beste0
- Value
- 87% siderophore unitse0
- Qualifier
- Casamino acide0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice plants”
e0“Casamino acid was found to be the best medium for siderophore production (87% siderophore units).”
Claim · model-written summary
The highest rice seedling vigor index corresponded to an inoculum size of 0.3 × 108 cfu/ml.
- Taxon
- riceOryza sativae0
- Treatment
- inoculum size of 0.3 × 108 cfu/mle0
- Outcome
- rice seedlings vigor indexe0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MBRL 10 showed the highest rice seedlings vigor index corresponding to an inoculum size of 0.3 × 108 cfu/ml.”
Claim · model-written summary
Strain treated rice seeds had higher germination percentage.
- Taxon
- riceOryza sativae0
- Treatment
- Strain treatede0
- Interactor
- Streptomyces sp. MBRL 10Streptomyces sp. MBRL 10t0biocontrol_agent
- Outcome
- germination percentagee0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Strain treated rice seeds at an inoculum size of 0.3 × 108 cfu/ml showed higher germination percentage and significantly enhanced (P ⩽ 0.05) the growth of seedlings.”
t0“Streptomyces sp. MBRL 10”
Claim · model-written summary
Strain treatment significantly enhanced growth of rice seedlings.
- Taxon
- riceOryza sativae0
- Treatment
- Strain treatede0
- Interactor
- Streptomyces sp. MBRL 10Streptomyces sp. MBRL 10t0biocontrol_agent
- Outcome
- growth of seedlingse0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Strain treated rice seeds at an inoculum size of 0.3 × 108 cfu/ml showed higher germination percentage and significantly enhanced (P ⩽ 0.05) the growth of seedlings.”
t0“Streptomyces sp. MBRL 10”
Claim · model-written summary
Under pathogen challenge, treated rice seedlings had higher germination than seedlings challenged with pathogen alone.
- Taxon
- riceOryza sativae0
- Treatment
- Strain treatede0
- Interactor
- pathogense0pathogen
- Second interactor
- Streptomyces sp. MBRL 10Streptomyces sp. MBRL 10t0biocontrol_agent
- Outcome
- germination percentagese0
- Direction
- highere0
- Comparator
- seedlings challenged with pathogen alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Strain treated rice seedlings challenged with pathogens also exhibited higher germination percentages and significantly enhanced (P ⩽ 0.05) growth over seedlings challenged with pathogen alone in the absence of the bioinoculant.”
t0“Streptomyces sp. MBRL 10”
Claim · model-written summary
Under pathogen challenge, treated rice seedlings grew significantly more than seedlings challenged with pathogen alone.
- Taxon
- riceOryza sativae0
- Treatment
- Strain treatede0
- Interactor
- pathogense0pathogen
- Second interactor
- Streptomyces sp. MBRL 10Streptomyces sp. MBRL 10t0biocontrol_agent
- Outcome
- growthe0
- Direction
- enhancede0
- Comparator
- seedlings challenged with pathogen alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Strain treated rice seedlings challenged with pathogens also exhibited higher germination percentages and significantly enhanced (P ⩽ 0.05) growth over seedlings challenged with pathogen alone in the absence of the bioinoculant.”
t0“Streptomyces sp. MBRL 10”
Claim · model-written summary
Strain treatment significantly promoted rice plant growth under nethouse conditions.
- Taxon
- Rice plantsOryza sativae0
- Treatment
- treated with the straine0
- Interactor
- Streptomyces sp. MBRL 10Streptomyces sp. MBRL 10t0biocontrol_agent
- Outcome
- growthe0
- Direction
- promotee0
- Setting
- nethouse conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rice plants treated with the strain significantly promote (P ⩽ 0.05) the growth under nethouse conditions.”
t0“Streptomyces sp. MBRL 10”