Paper · 2009 · Pesticidi i fitomedicina

Effects of copper-based compounds, antibiotics and a plant activator on population sizes and spread of Clavibacter michiganensis subsp. michiganensis in greenhouse tomato seedlings

Svetlana Milijasevic; Biljana Todorovic; Ivana Potocnik; et al.

17
claims
28
verbatim quotes
16
citations
2
research areas
✓
Open access · cc-by-sa

Abstract

Three copper-based compounds (copper hydroxide, copper oxychloride, copper sulphate), two antibiotics (streptomycin and kasugamycin) and a plant activator (ASM) significantly reduced population sizes and spread of C. michiganensis subsp. michiganensis among tomato seedlings in the greenhouse. Streptomycin had the best effect in reducing pathogen population size in all sampling regions. Moreover, this antibiotic completely stopped the spread of C. michiganensis subsp. michiganensis in the region most distant from the inoculum focus. Copper hydroxide mixed with streptomycin significantly limited the pathogen population, compared with copper hydroxide alone, the other copper-based compounds, ASM and kasugamycin. However, combining streptomycin with copper hydroxide did not contribute to its greater efficacy against the pathogen population. Copper-based compounds, in general, were less effective in limiting pathogen population sizes than the other treatments in all three sampling regions, primarily copper oxychloride and the combination of copper hydroxide and mannose. Among copper compounds, copper hydroxide was the most prominent in reducing the bacterial population, especially in the region closest to the inoculums focus, while its combination with mannose did not improve the effects. Kasugamycin significantly limited pathogen population size, compared to copper bactericides, but it was less effective than the other antibiotic compound, i.e. streptomycin. The plant activator ASM significantly reduced population density, and it was more effective when used three days prior to inoculation than six days before inoculation.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by-sa. Read at the source ↗

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 17

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Copper hydroxide reduced pathogen population size and spread.

Treatment
copper hydroxidee0
Interactor
C. michiganensis subsp. michiganensisClavibacter michiganensis subsp. michiganensise0pathogen
Outcome
population sizes and spread of C. michiganensis subsp. michiganensise0
Direction
reducede0
Setting
greenhousee0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗
Clavibacter michiganensis subsp. michiganensis
Clavibacter michiganensis subsp. michiganensis · Interactor · picture of the speciesMary Ann Hansen, Virginia Polytechnic Institute and State University, Bugwood.org · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Three copper-based compounds (copper hydroxide, copper oxychloride, copper sulphate), two antibiotics (streptomycin and kasugamycin) and a plant activator (ASM) significantly reduced population sizes and spread of C. michiganensis subsp. michiganensis among tomato seedlings in the greenhouse”

✓ located verbatim in the source · abstract, characters 0–292 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Copper oxychloride reduced pathogen population size and spread.

Treatment
copper oxychloridee0
Interactor
C. michiganensis subsp. michiganensisClavibacter michiganensis subsp. michiganensise0pathogen
Outcome
population sizes and spread of C. michiganensis subsp. michiganensise0
Direction
reducede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗
Clavibacter michiganensis subsp. michiganensis
Clavibacter michiganensis subsp. michiganensis · Interactor · picture of the speciesMary Ann Hansen, Virginia Polytechnic Institute and State University, Bugwood.org · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Three copper-based compounds (copper hydroxide, copper oxychloride, copper sulphate), two antibiotics (streptomycin and kasugamycin) and a plant activator (ASM) significantly reduced population sizes and spread of C. michiganensis subsp. michiganensis among tomato seedlings in the greenhouse”

✓ located verbatim in the source · abstract, characters 0–292 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Copper sulphate reduced pathogen population size and spread.

Treatment
copper sulphatee0
Interactor
C. michiganensis subsp. michiganensisClavibacter michiganensis subsp. michiganensise0pathogen
Outcome
population sizes and spread of C. michiganensis subsp. michiganensise0
Direction
reducede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗
Clavibacter michiganensis subsp. michiganensis
Clavibacter michiganensis subsp. michiganensis · Interactor · picture of the speciesMary Ann Hansen, Virginia Polytechnic Institute and State University, Bugwood.org · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Three copper-based compounds (copper hydroxide, copper oxychloride, copper sulphate), two antibiotics (streptomycin and kasugamycin) and a plant activator (ASM) significantly reduced population sizes and spread of C. michiganensis subsp. michiganensis among tomato seedlings in the greenhouse”

✓ located verbatim in the source · abstract, characters 0–292 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Streptomycin reduced pathogen population size and spread.

Treatment
streptomycine0
Interactor
C. michiganensis subsp. michiganensisClavibacter michiganensis subsp. michiganensise0pathogen
Outcome
population sizes and spread of C. michiganensis subsp. michiganensise0
Direction
reducede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗
Clavibacter michiganensis subsp. michiganensis
Clavibacter michiganensis subsp. michiganensis · Interactor · picture of the speciesMary Ann Hansen, Virginia Polytechnic Institute and State University, Bugwood.org · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Three copper-based compounds (copper hydroxide, copper oxychloride, copper sulphate), two antibiotics (streptomycin and kasugamycin) and a plant activator (ASM) significantly reduced population sizes and spread of C. michiganensis subsp. michiganensis among tomato seedlings in the greenhouse”

✓ located verbatim in the source · abstract, characters 0–292 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Kasugamycin reduced pathogen population size and spread.

Treatment
kasugamycine0
Interactor
C. michiganensis subsp. michiganensisClavibacter michiganensis subsp. michiganensise0pathogen
Outcome
population sizes and spread of C. michiganensis subsp. michiganensise0
Direction
reducede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗
Clavibacter michiganensis subsp. michiganensis
Clavibacter michiganensis subsp. michiganensis · Interactor · picture of the speciesMary Ann Hansen, Virginia Polytechnic Institute and State University, Bugwood.org · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Three copper-based compounds (copper hydroxide, copper oxychloride, copper sulphate), two antibiotics (streptomycin and kasugamycin) and a plant activator (ASM) significantly reduced population sizes and spread of C. michiganensis subsp. michiganensis among tomato seedlings in the greenhouse”

✓ located verbatim in the source · abstract, characters 0–292 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

ASM reduced pathogen population size and spread.

Treatment
ASMe0
Interactor
C. michiganensis subsp. michiganensisClavibacter michiganensis subsp. michiganensise0pathogen
Outcome
population sizes and spread of C. michiganensis subsp. michiganensise0
Direction
reducede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗
Clavibacter michiganensis subsp. michiganensis
Clavibacter michiganensis subsp. michiganensis · Interactor · picture of the speciesMary Ann Hansen, Virginia Polytechnic Institute and State University, Bugwood.org · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Three copper-based compounds (copper hydroxide, copper oxychloride, copper sulphate), two antibiotics (streptomycin and kasugamycin) and a plant activator (ASM) significantly reduced population sizes and spread of C. michiganensis subsp. michiganensis among tomato seedlings in the greenhouse”

✓ located verbatim in the source · abstract, characters 0–292 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Streptomycin gave the best pathogen population reduction across sampling regions.

Treatment
Streptomycine0
Outcome
pathogen population sizee0
Direction
reducinge0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Streptomycin had the best effect in reducing pathogen population size in all sampling regions”

✓ located verbatim in the source · abstract, characters 294–387 · show in text ↑
t0

“tomato”

✓ located verbatim in the source · title, characters 164–170 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Streptomycin completely stopped pathogen spread in the most distant region.

Interactor
C. michiganensis subsp. michiganensisClavibacter michiganensis subsp. michiganensise0pathogen
Outcome
spread of C. michiganensis subsp. michiganensise0
Direction
stoppede0
Qualifier
region most distant from the inoculum focuse0

Not reportedTreatmentComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗
Clavibacter michiganensis subsp. michiganensis
Clavibacter michiganensis subsp. michiganensis · Interactor · picture of the speciesMary Ann Hansen, Virginia Polytechnic Institute and State University, Bugwood.org · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“this antibiotic completely stopped the spread of C. michiganensis subsp. michiganensis in the region most distant from the inoculum focus”

✓ located verbatim in the source · abstract, characters 399–536 · show in text ↑
t0

“tomato”

✓ located verbatim in the source · title, characters 164–170 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Copper hydroxide plus streptomycin limited pathogen population more than several comparators.

Treatment
Copper hydroxide mixed with streptomycine0
Outcome
pathogen populatione0
Direction
limitede0
Comparator
copper hydroxide alonee0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Copper hydroxide mixed with streptomycin significantly limited the pathogen population, compared with copper hydroxide alone, the other copper-based compounds, ASM and kasugamycin”

✓ located verbatim in the source · abstract, characters 538–717 · show in text ↑
t0

“tomato”

✓ located verbatim in the source · title, characters 164–170 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Adding copper hydroxide did not increase streptomycin efficacy.

Treatment
combining streptomycin with copper hydroxidee0
Outcome
efficacy against the pathogen populatione0
Direction
did not contributee0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“combining streptomycin with copper hydroxide did not contribute to its greater efficacy against the pathogen population”

✓ located verbatim in the source · abstract, characters 728–847 · show in text ↑
t0

“tomato”

✓ located verbatim in the source · title, characters 164–170 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Copper compounds generally limited pathogen populations less effectively than other treatments.

Treatment
Copper-based compoundse0
Outcome
pathogen population sizese0
Direction
less effectivee0
Comparator
other treatmentse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Copper-based compounds, in general, were less effective in limiting pathogen population sizes than the other treatments in all three sampling regions”

✓ located verbatim in the source · abstract, characters 849–998 · show in text ↑
t0

“tomato”

✓ located verbatim in the source · title, characters 164–170 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Copper hydroxide was the most prominent copper treatment for bacterial population reduction.

Treatment
copper hydroxidee0
Outcome
bacterial populatione0
Direction
reducinge0
Comparator
copper compoundse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Among copper compounds, copper hydroxide was the most prominent in reducing the bacterial population, especially in the region closest to the inoculums focus”

✓ located verbatim in the source · abstract, characters 1082–1239 · show in text ↑
t0

“tomato”

✓ located verbatim in the source · title, characters 164–170 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Adding mannose did not improve copper hydroxide effects.

Treatment
combination with mannosee0
Outcome
effectse0
Direction
did not improvee0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“its combination with mannose did not improve the effects”

✓ located verbatim in the source · abstract, characters 1247–1303 · show in text ↑
t0

“tomato”

✓ located verbatim in the source · title, characters 164–170 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Kasugamycin limited pathogen population more than copper bactericides.

Treatment
Kasugamycine0
Outcome
pathogen population sizee0
Direction
limitede0
Comparator
copper bactericidese0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Kasugamycin significantly limited pathogen population size, compared to copper bactericides”

✓ located verbatim in the source · abstract, characters 1305–1396 · show in text ↑
t0

“tomato”

✓ located verbatim in the source · title, characters 164–170 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Kasugamycin was less effective than streptomycin.

Outcome
less effectivee0
Direction
less effectivee0
Comparator
streptomycine0

Not reportedTreatment

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“it was less effective than the other antibiotic compound, i.e. streptomycin”

✓ located verbatim in the source · abstract, characters 1402–1477 · show in text ↑
t0

“tomato”

✓ located verbatim in the source · title, characters 164–170 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

ASM significantly reduced pathogen population density.

Treatment
ASMe0
Outcome
population densitye0
Direction
reducede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The plant activator ASM significantly reduced population density”

✓ located verbatim in the source · abstract, characters 1479–1543 · show in text ↑
t0

“tomato”

✓ located verbatim in the source · title, characters 164–170 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

ASM was more effective three rather than six days before inoculation.

Treatment
three days prior to inoculatione0
Outcome
more effectivee0
Direction
more effectivee0
Comparator
six days before inoculatione0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“it was more effective when used three days prior to inoculation than six days before inoculation”

✓ located verbatim in the source · abstract, characters 1549–1645 · show in text ↑
t0

“tomato”

✓ located verbatim in the source · title, characters 164–170 · show in text ↑

acibenzolar-S-methyl · pest · Solanum lycopersicum (tomato)Results differ

7 papers: 5 positive, 2 negative or no effect

4 papers in the same direction as this paper · 2 in the opposite direction

  1. no effect
  2. no effect
  3. positive

3 papers more in this group

See all 7 papers →

sulfate · Clavibacter michiganensis subsp. michiganensis · Solanum lycopersicum (tomato)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

kasugamycin · Clavibacter michiganensis subsp. michiganensis · Solanum lycopersicum (tomato)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

Copper hydroxide · soil: biology · Solanum lycopersicum (tomato)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

kasugamycin · disease · Solanum lycopersicum (tomato)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

copper atom · Clavibacter michiganensis subsp. michiganensis · Solanum lycopersicum (tomato)Results agree

3 papers: 3 positive, 0 negative or no effect

2 papers in the same direction as this paper

  1. positive
  2. positive
See all 3 papers →

Copper hydroxide · Clavibacter michiganensis subsp. michiganensis · Solanum lycopersicum (tomato)Results agree

4 papers: 4 positive, 0 negative or no effect

3 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive
See all 4 papers →

streptomycin · Clavibacter michiganensis subsp. michiganensis · Solanum lycopersicum (tomato)Results agree

4 papers: 4 positive, 0 negative or no effect

3 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive
See all 4 papers →

8 of 11 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.

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.