Paper · 2014 · American Journal of Life Sciences

Effect of Combination between Bioagents and Antioxidants on Management of Tomato Powdery Mildew

Abada K. A.

20
claims
42
verbatim quotes
2
citations
3
research areas
✓
Open access

Abstract

Isolation of microorganisms occurring on the phyllopane of tomato leaves yielded many Basillus and Trichoderma strains. The isolated Bacillus spp. were purified and identified as B. chitinosporus, B. megaterium, B. pumilus, B. subtilis and B. thuringiensis and the isolated Trichoderma spp. were, T. album, T. hamatum, T. koningii, T. harzianum and T.veredi. All the tested Bacillus and Trichoderma strains caused significant inhibition to the germinated conidia of Leveillula taurica (imperfect stage = Oidiopsis taurica) the causal of tomato powdery mildew compared with control treatment. In addition, B. thuringiensis B. subtilis and B. chitinosporus were the most efficient bacteria in this regard and T. harzianum and T. veredi were the most efficient fungi. The inducer resistance chemicals (IRCs) bion, chitosan, humic acid, salicylic acid and zinc sulphate resulted in significant reduction to the germinated conidia of the causal fungus compared with control treatment. This reduction was gradually increased by increasing the tested concentration. In plastic house experiments, spraying tomato plants with the tested bioagents B. thuringiensis and T. harzianum and the IRC salicylic acid resulted in significant reduction to powdery mildew severity during 2012/2013 and 2013/ 2014 growing seasons. Spraying of the bioagents B.thuringiensis and T. harzianum and the IRC salicylic acid, each alone or in different combinations, resulted in significant reduction to the severity of the disease with significant increase to the produced fruit yield. Furthermore, spraying any of these compounds alone was of less effect in this regard compared with spraying their combinations. However, the fungicide Sumi-8 was the superior in this regard, being 3.7 % disease severity and fruit yield 16.2 k g. / plant followed by the mixture of the three treatments, being 4.6% disease severity and fruit yield 13.7 kg. / plant. The three oxidative-reductive enzymes, i.e. PAL, PO and PPO were greatly increased in the leaves of all sprayed treatments compared with control treatment. In addition, plants sprayed with salicylic acid recorded the highest activity of the three enzymes followed by that sprayed with B. thuringiensis then T. harzianum. Meanwhile, untreated leaves (control) recorded the lowest activity followed by that sprayed with Sumi-8.

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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 20

Observationobservedoriginal resultmeasured

Claim · model-written summary

Isolation of microorganisms from tomato phyllopane yielded many Bacillus and Trichoderma strains

Organ / stage
phyllopane of tomato leavese1
Outcome
Isolation of microorganismse1

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

t0

“Tomato Powdery Mildew”

✓ located verbatim in the source · title, characters 74–95 · show in text ↑
e1

“Isolation of microorganisms occurring on the phyllopane of tomato leaves yielded many Basillus and Trichoderma strains”

✓ located verbatim in the source · abstract, characters 0–118 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Isolated Bacillus spp. were identified as five Bacillus species

Material
Bacillus spp.e2
Outcome
identifiede2

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

t0

“Tomato Powdery Mildew”

✓ located verbatim in the source · title, characters 74–95 · show in text ↑
e2

“The isolated Bacillus spp. were purified and identified as B. chitinosporus, B. megaterium, B. pumilus, B. subtilis and B. thuringiensis”

✓ located verbatim in the source · abstract, characters 120–256 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Isolated Trichoderma spp. comprised five Trichoderma species

Material
Trichoderma spp.e3
Outcome
T. album, T. hamatum, T. koningii, T. harzianum and T.veredie3

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

t0

“Tomato Powdery Mildew”

✓ located verbatim in the source · title, characters 74–95 · show in text ↑
e3

“the isolated Trichoderma spp. were, T. album, T. hamatum, T. koningii, T. harzianum and T.veredi”

✓ located verbatim in the source · abstract, characters 261–357 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Bacillus and Trichoderma strains significantly inhibited germinated conidia of Leveillula taurica compared with control

Treatment
Bacillus and Trichoderma strainse4
Interactor
Leveillula tauricae4pathogen
Second interactor
Bacillus and Trichoderma strainse4biocontrol_agent
Outcome
germinated conidiae4
Direction
inhibitione4
Comparator
control treatmente4

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

t0

“Tomato Powdery Mildew”

✓ located verbatim in the source · title, characters 74–95 · show in text ↑
e4

“All the tested Bacillus and Trichoderma strains caused significant inhibition to the germinated conidia of Leveillula taurica (imperfect stage = Oidiopsis taurica) the causal of tomato powdery mildew compared with control treatment”

✓ located verbatim in the source · abstract, characters 359–590 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

B. thuringiensis, B. subtilis and B. chitinosporus were the most efficient bacteria

Outcome
the most efficient bacteria in this regarde5
Direction
most efficiente5

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

t0

“Tomato Powdery Mildew”

✓ located verbatim in the source · title, characters 74–95 · show in text ↑
e5

“B. thuringiensis B. subtilis and B. chitinosporus were the most efficient bacteria in this regard”

✓ located verbatim in the source · abstract, characters 605–702 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

T. harzianum and T. veredi were the most efficient fungi

Outcome
the most efficient fungie6
Direction
most efficiente6

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

t0

“Tomato Powdery Mildew”

✓ located verbatim in the source · title, characters 74–95 · show in text ↑
e6

“T. harzianum and T. veredi were the most efficient fungi”

✓ located verbatim in the source · abstract, characters 707–763 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Resistance-inducing chemicals bion, chitosan and humic acid significantly reduced germinated conidia compared with control

Treatment
bion, chitosan, humic acide7
Outcome
germinated conidiae7
Direction
reductione7
Comparator
control treatmente7

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

t0

“Tomato Powdery Mildew”

✓ located verbatim in the source · title, characters 74–95 · show in text ↑
e7

“The inducer resistance chemicals (IRCs) bion, chitosan, humic acid, salicylic acid and zinc sulphate resulted in significant reduction to the germinated conidia of the causal fungus compared with control treatment”

✓ located verbatim in the source · abstract, characters 765–978 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Resistance-inducing chemicals salicylic acid and zinc sulphate significantly reduced germinated conidia compared with control

Treatment
salicylic acid and zinc sulphatee7
Outcome
germinated conidiae7
Direction
reductione7
Comparator
control treatmente7

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

t0

“Tomato Powdery Mildew”

✓ located verbatim in the source · title, characters 74–95 · show in text ↑
e7

“The inducer resistance chemicals (IRCs) bion, chitosan, humic acid, salicylic acid and zinc sulphate resulted in significant reduction to the germinated conidia of the causal fungus compared with control treatment”

✓ located verbatim in the source · abstract, characters 765–978 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Reduction of germinated conidia increased with the tested IRC concentration

Treatment
increasing the tested concentratione1
Outcome
reductione1
Direction
gradually increasede1

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

t0

“Tomato Powdery Mildew”

✓ located verbatim in the source · title, characters 74–95 · show in text ↑
e1

“This reduction was gradually increased by increasing the tested concentration”

✓ located verbatim in the source · abstract, characters 980–1057 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Spraying bioagents B. thuringiensis and T. harzianum and salicylic acid significantly reduced powdery mildew severity in plastic house trials

Treatment
the tested bioagents B. thuringiensis and T. harzianum and the IRC salicylic acide1
Interactor
powdery mildewe1pathogen
Outcome
powdery mildew severitye1
Direction
reductione1
Qualifier
2012/2013 and 2013/ 2014 growing seasonse1
Setting
plastic house experimentse1

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

t0

“Tomato Powdery Mildew”

✓ located verbatim in the source · title, characters 74–95 · show in text ↑
e1

“In plastic house experiments, spraying tomato plants with the tested bioagents B. thuringiensis and T. harzianum and the IRC salicylic acid resulted in significant reduction to powdery mildew severity during 2012/2013 and 2013/ 2014 growing seasons”

✓ located verbatim in the source · abstract, characters 1059–1307 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Spraying the bioagents and salicylic acid alone or combined significantly reduced disease severity

Treatment
the bioagents B.thuringiensis and T. harzianum and the IRC salicylic acide1
Outcome
severity of the diseasee1
Direction
reductione1
Qualifier
each alone or in different combinationse1

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

t0

“Tomato Powdery Mildew”

✓ located verbatim in the source · title, characters 74–95 · show in text ↑
e1

“Spraying of the bioagents B.thuringiensis and T. harzianum and the IRC salicylic acid, each alone or in different combinations, resulted in significant reduction to the severity of the disease with significant increase to the produced fruit yield”

✓ located verbatim in the source · abstract, characters 1309–1555 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Spraying the bioagents and salicylic acid alone or combined significantly increased produced fruit yield

Treatment
the bioagents B.thuringiensis and T. harzianum and the IRC salicylic acide1
Outcome
produced fruit yielde1
Direction
increasee1
Qualifier
each alone or in different combinationse1

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

t0

“Tomato Powdery Mildew”

✓ located verbatim in the source · title, characters 74–95 · show in text ↑
e1

“Spraying of the bioagents B.thuringiensis and T. harzianum and the IRC salicylic acid, each alone or in different combinations, resulted in significant reduction to the severity of the disease with significant increase to the produced fruit yield”

✓ located verbatim in the source · abstract, characters 1309–1555 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Spraying any bioagent or chemical alone was less effective than spraying their combinations

Treatment
spraying any of these compounds alonee1
Outcome
effect in this regarde1
Direction
lesse1
Comparator
spraying their combinationse1

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

t0

“Tomato Powdery Mildew”

✓ located verbatim in the source · title, characters 74–95 · show in text ↑
e1

“spraying any of these compounds alone was of less effect in this regard compared with spraying their combinations”

✓ located verbatim in the source · abstract, characters 1570–1683 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Fungicide Sumi-8 gave 3.7 % disease severity, the best result

Treatment
the fungicide Sumi-8e1
Outcome
disease severitye1
Direction
superiore1
Value
3.7 %e1

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

t0

“Tomato Powdery Mildew”

✓ located verbatim in the source · title, characters 74–95 · show in text ↑
e1

“the fungicide Sumi-8 was the superior in this regard, being 3.7 % disease severity”

✓ located verbatim in the source · abstract, characters 1694–1776 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Fungicide Sumi-8 gave fruit yield of 16.2 k g. / plant

Treatment
the fungicide Sumi-8e1
Outcome
fruit yielde2
Direction
superiore1
Value
16.2 k g. / plante2

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

t0

“Tomato Powdery Mildew”

✓ located verbatim in the source · title, characters 74–95 · show in text ↑
e1

“the fungicide Sumi-8 was the superior in this regard, being 3.7 % disease severity”

✓ located verbatim in the source · abstract, characters 1694–1776 · show in text ↑
e2

“fruit yield 16.2 k g. / plant”

✓ located verbatim in the source · abstract, characters 1781–1810 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Mixture of the three treatments gave 4.6% disease severity

Treatment
the mixture of the three treatmentse1
Outcome
disease severitye1
Value
4.6%e1

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

t0

“Tomato Powdery Mildew”

✓ located verbatim in the source · title, characters 74–95 · show in text ↑
e1

“the mixture of the three treatments, being 4.6% disease severity”

✓ located verbatim in the source · abstract, characters 1823–1887 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Mixture of the three treatments gave fruit yield of 13.7 kg. / plant

Treatment
the mixture of the three treatmentse1
Outcome
fruit yielde2
Value
13.7 kg. / plante2

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

t0

“Tomato Powdery Mildew”

✓ located verbatim in the source · title, characters 74–95 · show in text ↑
e1

“the mixture of the three treatments, being 4.6% disease severity”

✓ located verbatim in the source · abstract, characters 1823–1887 · show in text ↑
e2

“fruit yield 13.7 kg. / plant”

✓ located verbatim in the source · abstract, characters 1892–1920 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Oxidative-reductive enzymes PAL, PO and PPO were greatly increased in leaves of all sprayed treatments compared with control

Organ / stage
leavese1
Treatment
all sprayed treatmentse1
Gene
PAL, PO and PPOe1
Outcome
oxidative-reductive enzymese1
Direction
greatly increasede1
Comparator
control treatmente1

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

t0

“Tomato Powdery Mildew”

✓ located verbatim in the source · title, characters 74–95 · show in text ↑
e1

“The three oxidative-reductive enzymes, i.e. PAL, PO and PPO were greatly increased in the leaves of all sprayed treatments compared with control treatment”

✓ located verbatim in the source · abstract, characters 1922–2076 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Salicylic acid spraying gave the highest activity of the three enzymes, above B. thuringiensis and T. harzianum

Treatment
plants sprayed with salicylic acide1
Outcome
activity of the three enzymese1
Direction
higheste1
Comparator
sprayed with B. thuringiensis then T. harzianume1

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

t0

“Tomato Powdery Mildew”

✓ located verbatim in the source · title, characters 74–95 · show in text ↑
e1

“plants sprayed with salicylic acid recorded the highest activity of the three enzymes followed by that sprayed with B. thuringiensis then T. harzianum”

✓ located verbatim in the source · abstract, characters 2091–2241 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Untreated tomato leaves had the lowest enzyme activity

Organ / stage
untreated leavese1
Outcome
activitye1
Direction
loweste1

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

t0

“Tomato Powdery Mildew”

✓ located verbatim in the source · title, characters 74–95 · show in text ↑
e1

“untreated leaves (control) recorded the lowest activity followed by that sprayed with Sumi-8”

✓ located verbatim in the source · abstract, characters 2254–2346 · show in text ↑

Trichoderma harzianum · yield · Solanum lycopersicum (tomato)Positive and negative results

25 papers: 24 positive, 1 negative or no effect

23 papers in the same direction as this paper · 1 in the opposite direction

  1. no effect
  2. positive
  3. positive

21 papers more in this group

See all 25 papers →

Trichoderma · disease · Solanum lycopersicum (tomato)Positive and negative results

27 papers: 25 positive, 2 negative or no effect

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

  1. negative
  2. negative
  3. positive

23 papers more in this group

See all 27 papers →

salicylic acid · disease · Solanum lycopersicum (tomato)Positive and negative results

39 papers: 35 positive, 4 negative or no effect

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

  1. negative
  2. negative
  3. negative

35 papers more in this group

See all 39 papers →

chitosan · disease · Solanum lycopersicum (tomato)Positive and negative results

40 papers: 38 positive, 2 negative or no effect

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

  1. no effect
  2. no effect
  3. positive

36 papers more in this group

See all 40 papers →

Trichoderma harzianum · disease · Solanum lycopersicum (tomato)Positive and negative results

45 papers: 42 positive, 3 negative or no effect

41 papers in the same direction as this paper · 3 in the opposite direction

  1. negative
  2. no effect
  3. no effect

41 papers more in this group

See all 45 papers →

salicylic acid · yield · Solanum lycopersicum (tomato)Positive and negative results

48 papers: 45 positive, 3 negative or no effect

44 papers in the same direction as this paper · 3 in the opposite direction

  1. no effect
  2. no effect
  3. negative

44 papers more in this group

See all 48 papers →

Bacillus thuringiensis · disease · Solanum lycopersicum (tomato)Results agree

5 papers: 5 positive, 0 negative or no effect

4 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

1 paper more in this group

See all 5 papers →

Bacillus thuringiensis · yield · Solanum lycopersicum (tomato)Results agree

5 papers: 5 positive, 0 negative or no effect

4 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

1 paper more in this group

See all 5 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.