Abstract
Potato common scab, caused mainly by Streptomyces scabies , causes surface necrosis and reduces the economic value of potato tubers, but effective chemical control is still lacking. In this study, an attempt was made to control potato common scab by inoculating potatoes with Bacillus velezensis ( B. velezensis ) and to further investigate the mechanism of biological control. The results showed that B. velezensis Y6 could reduce the disease severity of potato common scab from 49.92 ± 25.74% [inoculated with Streptomyces scabies ( S. scabies ) only] to 5.56 ± 1.89% (inoculated with S. scabies and Y6 on the same day) and increase the potato yield by 37.32% compared with the control under pot experiment in this study. Moreover, in the field trial, it was found that Y6 could also significantly reduce disease severity from 13.20 ± 1.00% to 4.00 ± 0.70% and increase the potato yield from 2.07 ± 0.10 ton/mu to 2.87 ± 0.28 ton/mu ( p < 0.01; Tukey’s test). Furthermore, RNA-seq analysis indicated that 256 potato genes were upregulated and 183 potato genes were downregulated in response to B. velezensis Y6 inoculation. In addition, strain Y6 was found to induce the expression of plant growth-related genes in potato, including cell wall organization, biogenesis, brassinosteroid biosynthesis, and plant hormone transduction genes, by 1.01–4.29 times. As well as up-regulate hydroquinone metabolism-related genes and several transcription factors (bHLH, MYB, and NAC) by 1.13–4.21 times. In summary, our study will help to understand the molecular mechanism of biological control of potato common scab and improve potato yield.
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Claims 8
Claim · model-written summary
disease severity of potato common scab changed after Y6.
- Taxon
- potato
Solanum tuberosumt0 - Treatment
- inoculated with S. scabies and Y6 on the same daye0
- Interactor
- Streptomyces scabiesStreptomyces scabieie0pathogen
- Second interactor
- B. velezensis Y6
Bacillus velezensise0biocontrol_agent - Outcome
- disease severity of potato common scabe0
- Direction
- reducee0
- Value
- 5.56 ± 1.89%e0
- Comparator
- inoculated with Streptomyces scabies ( S. scabies ) onlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.


Verbatim
e0“B. velezensis Y6 could reduce the disease severity of potato common scab from 49.92 ± 25.74% [inoculated with Streptomyces scabies ( S. scabies ) only] to 5.56 ± 1.89% (inoculated with S. scabies and Y6 on the same day)”
t0“Biological control of potato common scab and growth promotion of potato by Bacillus velezensis Y6”
Claim · model-written summary
potato yield changed after Y6.
- Taxon
- potato
Solanum tuberosumt0 - Outcome
- potato yielde0
- Direction
- increasee0
- Value
- 37.32%e0
- Comparator
- controle0
- Setting
- pot experimente0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“increase the potato yield by 37.32% compared with the control under pot experiment in this study.”
t0“Biological control of potato common scab and growth promotion of potato by Bacillus velezensis Y6”
Claim · model-written summary
disease severity changed after Y6.
- Taxon
- potato
Solanum tuberosumt0 - Treatment
- Y6e0
- Outcome
- disease severitye0
- Direction
- reducee0
- Value
- 4.00 ± 0.70%e0
- Setting
- field triale0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“in the field trial, it was found that Y6 could also significantly reduce disease severity from 13.20 ± 1.00% to 4.00 ± 0.70%”
t0“Biological control of potato common scab and growth promotion of potato by Bacillus velezensis Y6”
Claim · model-written summary
potato yield changed after Y6.
- Taxon
- potato
Solanum tuberosumt0 - Outcome
- potato yielde0
- Direction
- increasee0
- Value
- 2.87 ± 0.28 ton/mue0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“increase the potato yield from 2.07 ± 0.10 ton/mu to 2.87 ± 0.28 ton/mu ( p < 0.01; Tukey’s test)”
t0“Biological control of potato common scab and growth promotion of potato by Bacillus velezensis Y6”
Claim · model-written summary
potato genes changed after Y6.
- Taxon
- potato
Solanum tuberosumt0 - Treatment
- B. velezensis Y6 inoculatione0
- Interactor
- B. velezensis Y6
Bacillus velezensise0biocontrol_agent - Outcome
- potato genese0
- Direction
- upregulatede0
- Value
- 256 potato genese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.


Verbatim
e0“256 potato genes were upregulated and 183 potato genes were downregulated in response to B. velezensis Y6 inoculation.”
t0“Biological control of potato common scab and growth promotion of potato by Bacillus velezensis Y6”
Claim · model-written summary
potato genes changed after Y6.
- Taxon
- potato
Solanum tuberosumt0 - Treatment
- B. velezensis Y6 inoculatione0
- Interactor
- B. velezensis Y6
Bacillus velezensise0biocontrol_agent - Outcome
- potato genese0
- Direction
- downregulatede0
- Value
- 183 potato genese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.


Verbatim
e0“256 potato genes were upregulated and 183 potato genes were downregulated in response to B. velezensis Y6 inoculation.”
t0“Biological control of potato common scab and growth promotion of potato by Bacillus velezensis Y6”
Claim · model-written summary
expression of plant growth-related genes changed after Y6.
- Taxon
- potato
Solanum tuberosumt0 - Treatment
- strain Y6e0
- Interactor
- Y6e0biocontrol_agent
- Outcome
- expression of plant growth-related genese0
- Direction
- inducee0
- Value
- 1.01–4.29 timese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“strain Y6 was found to induce the expression of plant growth-related genes in potato, including cell wall organization, biogenesis, brassinosteroid biosynthesis, and plant hormone transduction genes, by 1.01–4.29 times.”
t0“Biological control of potato common scab and growth promotion of potato by Bacillus velezensis Y6”
Claim · model-written summary
hydroquinone metabolism-related genes and several transcription factors changed after Y6.
- Taxon
- potato
Solanum tuberosumt0 - Outcome
- hydroquinone metabolism-related genes and several transcription factorse0
- Direction
- up-regulatee0
- Value
- 1.13–4.21 timese0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“up-regulate hydroquinone metabolism-related genes and several transcription factors (bHLH, MYB, and NAC) by 1.13–4.21 times.”
t0“Biological control of potato common scab and growth promotion of potato by Bacillus velezensis Y6”
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