Abstract
Abstract It is quite important to develop the microorganism resources with biocontrol capacity for rice blast. This study evaluated Bacillus subtilis JN005 for growth promotion and biocontrol efficacy against Magnaporthe oryzae . Results showed that rice seeds treated with 1 × 10 7 cfu/mL suspension of B. subtilis JN005 had 16% germination energy, 14% germination rate, 15% germination index, and 270% vigor index compared to those treated with sterile water (control). In pot experiments, the JN005 strain-treated rice plants exhibited notable increase in plant height, root length, stem circumference, and fresh weight, as well as higher concentration of chlorophyll a, chlorophyll b, and total chlorophyll in rice leaves. Rice leaves inoculated with the JN005 strain resulted in increased activities of defense-related enzymes, including peroxidase (POD), phenylalanine ammonialyase (PAL), superoxide dismutase (SOD), and catalase (CAT) compared to the water and the M. oryzae -inoculated treatments. In vitro inoculated rice leaves with 1 × 10 7 cfu/mL bacterial suspension compared to sterile water or control treatment exhibited lower disease incidence in the curative and preventive groups by 79% and 76%, respectively. Field experiment showed that after spraying with 1 × 10 7 cfu/mL bacterial suspension, efficacy rates on controlling rice blast on plants were (56.82 ± 1.12)% and (58.39 ± 3.05)% at seedling and maturity stages, respectively, and that rice production yield was (524.40 ± 17.88) g/m 2 . Therefore, B. subtilis JN005 could be a promising biological control agent for rice blast, thereby warranting further investigation of its efficacy.
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Claims 14
Claim · model-written summary
JN005-treated rice seeds had 16% germination energy compared with water-treated controls.
- Taxon
- rice
Oryza sativae0 - Treatment
- 1 × 10 7 cfu/mL suspension of B. subtilis JN005e0
- Interactor
- B. subtilis JN005
Bacillus subtilise0biocontrol_agent - Outcome
- germination energye0
- Value
- 16%e0
- Comparator
- sterile water (control)e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice seeds treated with 1 × 10 7 cfu/mL suspension of B. subtilis JN005 had 16% germination energy, 14% germination rate, 15% germination index, and 270% vigor index compared to those treated with sterile water (control)”
Claim · model-written summary
JN005-treated rice seeds had 14% germination rate compared with water-treated controls.
- Taxon
- riceOryza sativae0
- Treatment
- 1 × 10 7 cfu/mL suspension of B. subtilis JN005e0
- Interactor
- B. subtilis JN005Bacillus subtilise0biocontrol_agent
- Outcome
- germination ratee0
- Value
- 14%e0
- Comparator
- sterile water (control)e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice seeds treated with 1 × 10 7 cfu/mL suspension of B. subtilis JN005 had 16% germination energy, 14% germination rate, 15% germination index, and 270% vigor index compared to those treated with sterile water (control)”
Claim · model-written summary
JN005-treated rice seeds had 15% germination index compared with water-treated controls.
- Taxon
- riceOryza sativae0
- Treatment
- 1 × 10 7 cfu/mL suspension of B. subtilis JN005e0
- Interactor
- B. subtilis JN005Bacillus subtilise0biocontrol_agent
- Outcome
- germination indexe0
- Value
- 15%e0
- Comparator
- sterile water (control)e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice seeds treated with 1 × 10 7 cfu/mL suspension of B. subtilis JN005 had 16% germination energy, 14% germination rate, 15% germination index, and 270% vigor index compared to those treated with sterile water (control)”
Claim · model-written summary
JN005-treated rice seeds had 270% vigor index compared with water-treated controls.
- Taxon
- riceOryza sativae0
- Treatment
- 1 × 10 7 cfu/mL suspension of B. subtilis JN005e0
- Interactor
- B. subtilis JN005Bacillus subtilise0biocontrol_agent
- Outcome
- vigor indexe0
- Value
- 270%e0
- Comparator
- sterile water (control)e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice seeds treated with 1 × 10 7 cfu/mL suspension of B. subtilis JN005 had 16% germination energy, 14% germination rate, 15% germination index, and 270% vigor index compared to those treated with sterile water (control)”
Claim · model-written summary
JN005-treated rice plants increased in height, root length, and stem circumference.
- Taxon
- riceOryza sativae0
- Treatment
- JN005 strain-treatede0
- Interactor
- JN005e0biocontrol_agent
- Outcome
- plant height, root length, stem circumferencee0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the JN005 strain-treated rice plants exhibited notable increase in plant height, root length, stem circumference, and fresh weight”
Claim · model-written summary
JN005-treated rice plants increased in fresh weight.
- Taxon
- riceOryza sativae0
- Treatment
- JN005 strain-treatede0
- Interactor
- JN005e0biocontrol_agent
- Outcome
- fresh weighte0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the JN005 strain-treated rice plants exhibited notable increase in plant height, root length, stem circumference, and fresh weight”
Claim · model-written summary
JN005-treated rice leaves had higher chlorophyll a, chlorophyll b, and total chlorophyll concentrations.
- Taxon
- riceOryza sativae0
- Treatment
- JN005t0
- Interactor
- Bacillus subtilis JN005Bacillus subtilist0biocontrol_agent
- Outcome
- concentration of chlorophyll a, chlorophyll b, and total chlorophylle0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher concentration of chlorophyll a, chlorophyll b, and total chlorophyll in rice leaves”
t0“Control of Magnaporthe oryzae and Rice Growth Promotion by Bacillus subtilis JN005”
Claim · model-written summary
JN005 inoculation increased POD, PAL, and SOD activities versus water and M. oryzae inoculation.
- Taxon
- RiceOryza sativae0
- Treatment
- inoculated with the JN005 straine0
- Interactor
- M. oryzae
Pyricularia oryzaee0pathogen - Second interactor
- JN005e0biocontrol_agent
- Outcome
- peroxidase (POD), phenylalanine ammonialyase (PAL), superoxide dismutase (SOD)e0
- Direction
- increasede0
- Comparator
- water and the M. oryzae -inoculated treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rice leaves inoculated with the JN005 strain resulted in increased activities of defense-related enzymes, including peroxidase (POD), phenylalanine ammonialyase (PAL), superoxide dismutase (SOD), and catalase (CAT) compared to the water and the M. oryzae -inoculated treatments”
Claim · model-written summary
JN005 inoculation increased CAT activity versus water and M. oryzae inoculation.
- Taxon
- RiceOryza sativae0
- Treatment
- inoculated with the JN005 straine0
- Interactor
- M. oryzaePyricularia oryzaee0pathogen
- Second interactor
- JN005e0biocontrol_agent
- Outcome
- catalase (CAT)e0
- Direction
- increasede0
- Comparator
- water and the M. oryzae -inoculated treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rice leaves inoculated with the JN005 strain resulted in increased activities of defense-related enzymes, including peroxidase (POD), phenylalanine ammonialyase (PAL), superoxide dismutase (SOD), and catalase (CAT) compared to the water and the M. oryzae -inoculated treatments”
Claim · model-written summary
JN005 reduced curative-group rice blast disease incidence by 79% versus water or control.
- Taxon
- riceOryza sativae0
- Treatment
- 1 × 10 7 cfu/mL bacterial suspensione0
- Interactor
- Magnaporthe oryzaePyricularia oryzaet0pathogen
- Second interactor
- Bacillus subtilis JN005Bacillus subtilist0biocontrol_agent
- Outcome
- disease incidencee0
- Direction
- lowere0
- Value
- 79%e0
- Qualifier
- curativee0
- Comparator
- sterile water or control treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In vitro inoculated rice leaves with 1 × 10 7 cfu/mL bacterial suspension compared to sterile water or control treatment exhibited lower disease incidence in the curative and preventive groups by 79% and 76%, respectively”
t0“Control of Magnaporthe oryzae and Rice Growth Promotion by Bacillus subtilis JN005”
Claim · model-written summary
JN005 reduced preventive-group rice blast disease incidence by 76% versus water or control.
- Taxon
- riceOryza sativae0
- Treatment
- 1 × 10 7 cfu/mL bacterial suspensione0
- Interactor
- Magnaporthe oryzaePyricularia oryzaet0pathogen
- Second interactor
- Bacillus subtilis JN005Bacillus subtilist0biocontrol_agent
- Outcome
- disease incidencee0
- Direction
- lowere0
- Value
- 76%e0
- Qualifier
- preventivee0
- Comparator
- sterile water or control treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In vitro inoculated rice leaves with 1 × 10 7 cfu/mL bacterial suspension compared to sterile water or control treatment exhibited lower disease incidence in the curative and preventive groups by 79% and 76%, respectively”
t0“Control of Magnaporthe oryzae and Rice Growth Promotion by Bacillus subtilis JN005”
Claim · model-written summary
Field spraying JN005 controlled rice blast with 56.82 ± 1.12% efficacy at seedling stage.
- Taxon
- rice blast on plantse0
- Organ / stage
- seedlinge0
- Treatment
- JN005t0
- Interactor
- Magnaporthe oryzaePyricularia oryzaet0pathogen
- Second interactor
- Bacillus subtilis JN005Bacillus subtilist0biocontrol_agent
- Outcome
- efficacy rates on controlling rice blaste0
- Value
- (56.82 ± 1.12)%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“efficacy rates on controlling rice blast on plants were (56.82 ± 1.12)% and (58.39 ± 3.05)% at seedling and maturity stages, respectively”
t0“Control of Magnaporthe oryzae and Rice Growth Promotion by Bacillus subtilis JN005”
Claim · model-written summary
Field spraying JN005 controlled rice blast with 58.39 ± 3.05% efficacy at maturity.
- Taxon
- rice blast on plantse0
- Organ / stage
- maturitye0
- Treatment
- JN005t0
- Interactor
- Magnaporthe oryzaePyricularia oryzaet0pathogen
- Second interactor
- Bacillus subtilis JN005Bacillus subtilist0biocontrol_agent
- Outcome
- efficacy rates on controlling rice blaste0
- Value
- (58.39 ± 3.05)%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“efficacy rates on controlling rice blast on plants were (56.82 ± 1.12)% and (58.39 ± 3.05)% at seedling and maturity stages, respectively”
t0“Control of Magnaporthe oryzae and Rice Growth Promotion by Bacillus subtilis JN005”
Claim · model-written summary
Field rice yield after JN005 spraying was 524.40 ± 17.88 g/m 2.
- Taxon
- riceOryza sativae0
- Interactor
- Bacillus subtilis JN005Bacillus subtilist0biocontrol_agent
- Outcome
- production yielde0
- Value
- (524.40 ± 17.88) g/m 2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice production yield was (524.40 ± 17.88) g/m 2”
t0“Control of Magnaporthe oryzae and Rice Growth Promotion by Bacillus subtilis JN005”
The same questions in other papers
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See all 17 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.