Paper · 2013 · The Philippine Agricultural Scientist

Efficacy of Trichoderma harzianum, Bacillus cereus and Their Lytic Enzymes for the Control of Damping-Off Disease of Yard Long Bean Caused by Pythium aphanidermatum

Chamswarng Chiradej; Intana Warin; Yenjit Punnawich

10
claims
18
verbatim quotes
0
citations
2
research areas
—
Not open access

Abstract

The indigenous antagonistic microorganisms Trichoderma harzianum and Bacillus cereus and their lytic enzymes (β-glucanase and cellulase) were used to control the damping-off disease of yard long bean (Vigna sesquipedalis L.). T. harzianum strain NST-02 and B. cereus strain NST-03 produced high levels of crude enzymes, both cellulase and β-1,3-glucanase, which highly inhibited the mycelial growth of Pythium aphanidermatum. Under greenhouse conditions, T. harzianum NST-02, B. cereus NST-03 and their crude enzymes were able to induce the resistance-related enzymes polyphenol oxidase and phenylalanine ammonia-lyase. In all treatments, the level of Pythium-associated damping-off disease was reduced compared with the control treatment (water). For the field experiments, combination of T. harzianum NST-02, B. cereus NST-03 and their crude enzymes provided increased efficacy for the control of Pythium-associated damping-off disease compared with the application of either T. harzianum NST-02 or B. cereus NST-03 alone. The treatment that used T. harzianum NST-02, in combination with the crude cellulase and β-1,3-glucanase enzymes, resulted in the lowest incidence of disease, but it was not significantly different from the incidence achieved when the synthetic chemical metalaxyl was used. Reduction in the level of damping-off disease due to use of the combined treatment consisting of T. harzianum NST-02 and the crude cellulase and β-1,3-glucanase enzymes resulted in the highest yield and the longest length of yard long bean pods. In addition, combination of T. harzianum and B. cereus treatments, with crude cellulase and β-1,3-glucanase enzymes, promoted an increase in T. harzianum and B. cereus populations and root colonization and resulted in the increased efficacy of the control of damping-off disease in yard long bean compared with treatments that used T. harzianum and B. cereus alone.

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Claims 10

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Crude enzymes of T. harzianum strain NST-02 highly inhibited mycelial growth of Pythium aphanidermatum.

Treatment
crude enzymese2
Interactor
Pythium aphanidermatumPythium aphanidermatume2pathogen
Second interactor
T. harzianum strain NST-02Trichoderma harzianume2biocontrol_agent
Outcome
mycelial growthe2
Direction
inhibitede2

Not reportedComparator

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

Vigna unguiculata subsp. sesquipedalis
Vigna unguiculata subsp. sesquipedalis · TaxonDavid · Public domain · Wikimedia Commons ↗
Trichoderma harzianum
Trichoderma harzianum · Second interactorUS Department of Agriculture, Agricultural Research Service, Systematic Botany and Mycology Laboratory, [1] · Public domain · Wikimedia Commons ↗

Verbatim

e1

“control the damping-off disease of yard long bean (Vigna sesquipedalis L.)”

✓ located verbatim in the source · abstract, characters 150–224 · show in text ↑
e2

“T. harzianum strain NST-02 and B. cereus strain NST-03 produced high levels of crude enzymes, both cellulase and β-1,3-glucanase, which highly inhibited the mycelial growth of Pythium aphanidermatum”

✓ located verbatim in the source · abstract, characters 226–424 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Crude enzymes of B. cereus strain NST-03 highly inhibited mycelial growth of Pythium aphanidermatum.

Treatment
crude enzymese2
Interactor
Pythium aphanidermatumPythium aphanidermatume2pathogen
Second interactor
B. cereus strain NST-03Bacillus cereuse2biocontrol_agent
Outcome
mycelial growthe2
Direction
inhibitede2

Not reportedComparator

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

Vigna unguiculata subsp. sesquipedalis
Vigna unguiculata subsp. sesquipedalis · TaxonDavid · Public domain · Wikimedia Commons ↗
Bacillus cereus
Bacillus cereus · Second interactorMogana Das Murtey and Patchamuthu Ramasamy · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“control the damping-off disease of yard long bean (Vigna sesquipedalis L.)”

✓ located verbatim in the source · abstract, characters 150–224 · show in text ↑
e2

“T. harzianum strain NST-02 and B. cereus strain NST-03 produced high levels of crude enzymes, both cellulase and β-1,3-glucanase, which highly inhibited the mycelial growth of Pythium aphanidermatum”

✓ located verbatim in the source · abstract, characters 226–424 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Under greenhouse conditions, T. harzianum NST-02, B. cereus NST-03 and their crude enzymes induced polyphenol oxidase and phenylalanine ammonia-lyase in yard long bean.

Treatment
T. harzianum NST-02, B. cereus NST-03 and their crude enzymese3
Interactor
T. harzianum NST-02Trichoderma harzianume3biocontrol_agent
Second interactor
B. cereus NST-03Bacillus cereuse3biocontrol_agent
Outcome
resistance-related enzymes polyphenol oxidase and phenylalanine ammonia-lyasee3
Direction
inducee3
Setting
greenhouse conditionse3

Not reportedComparator

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

Vigna unguiculata subsp. sesquipedalis
Vigna unguiculata subsp. sesquipedalis · TaxonDavid · Public domain · Wikimedia Commons ↗
Trichoderma harzianum
Trichoderma harzianum · InteractorUS Department of Agriculture, Agricultural Research Service, Systematic Botany and Mycology Laboratory, [1] · Public domain · Wikimedia Commons ↗
Bacillus cereus
Bacillus cereus · Second interactorMogana Das Murtey and Patchamuthu Ramasamy · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“control the damping-off disease of yard long bean (Vigna sesquipedalis L.)”

✓ located verbatim in the source · abstract, characters 150–224 · show in text ↑
e3

“Under greenhouse conditions, T. harzianum NST-02, B. cereus NST-03 and their crude enzymes were able to induce the resistance-related enzymes polyphenol oxidase and phenylalanine ammonia-lyase”

✓ located verbatim in the source · abstract, characters 426–618 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

All treatments reduced Pythium-associated damping-off disease in yard long bean compared with the water control.

Treatment
In all treatmentse4
Interactor
PythiumPythiume4pathogen
Outcome
level of Pythium-associated damping-off diseasee4
Direction
reducede4
Comparator
control treatment (water)e4

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

Vigna unguiculata subsp. sesquipedalis
Vigna unguiculata subsp. sesquipedalis · TaxonDavid · Public domain · Wikimedia Commons ↗
Pythium
Pythium · Interactor · picture of the genus (one of its species)Doc. RNDr. Josef Reischig, CSc. · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“control the damping-off disease of yard long bean (Vigna sesquipedalis L.)”

✓ located verbatim in the source · abstract, characters 150–224 · show in text ↑
e4

“In all treatments, the level of Pythium-associated damping-off disease was reduced compared with the control treatment (water)”

✓ located verbatim in the source · abstract, characters 620–746 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

In field experiments, combined T. harzianum NST-02, B. cereus NST-03 and their crude enzymes increased efficacy against Pythium-associated damping-off disease compared with either T. harzianum NST-02 or B. cereus NST-03 alone.

Treatment
combination of T. harzianum NST-02, B. cereus NST-03 and their crude enzymese5
Interactor
PythiumPythiume5pathogen
Second interactor
T. harzianum NST-02Trichoderma harzianume5biocontrol_agent
Outcome
efficacy for the control of Pythium-associated damping-off diseasee5
Direction
increasede5
Comparator
either T. harzianum NST-02 or B. cereus NST-03 alonee5
Setting
field experimentse5

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

Vigna unguiculata subsp. sesquipedalis
Vigna unguiculata subsp. sesquipedalis · TaxonDavid · Public domain · Wikimedia Commons ↗
Pythium
Pythium · Interactor · picture of the genus (one of its species)Doc. RNDr. Josef Reischig, CSc. · CC BY-SA 3.0 · Wikimedia Commons ↗
Trichoderma harzianum
Trichoderma harzianum · Second interactorUS Department of Agriculture, Agricultural Research Service, Systematic Botany and Mycology Laboratory, [1] · Public domain · Wikimedia Commons ↗

Verbatim

e1

“control the damping-off disease of yard long bean (Vigna sesquipedalis L.)”

✓ located verbatim in the source · abstract, characters 150–224 · show in text ↑
e5

“For the field experiments, combination of T. harzianum NST-02, B. cereus NST-03 and their crude enzymes provided increased efficacy for the control of Pythium-associated damping-off disease compared with the application of either T. harzianum NST-02 or B. cereus NST-03 alone”

✓ located verbatim in the source · abstract, characters 748–1023 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The combination of T. harzianum NST-02 with crude cellulase and β-1,3-glucanase enzymes gave the lowest disease incidence in yard long bean.

Treatment
T. harzianum NST-02, in combination with the crude cellulase and β-1,3-glucanase enzymese6
Outcome
incidence of diseasee6
Direction
loweste6

Not reportedComparator

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

Vigna unguiculata subsp. sesquipedalis
Vigna unguiculata subsp. sesquipedalis · TaxonDavid · Public domain · Wikimedia Commons ↗

Verbatim

e1

“control the damping-off disease of yard long bean (Vigna sesquipedalis L.)”

✓ located verbatim in the source · abstract, characters 150–224 · show in text ↑
e6

“The treatment that used T. harzianum NST-02, in combination with the crude cellulase and β-1,3-glucanase enzymes, resulted in the lowest incidence of disease, but it was not significantly different from the incidence achieved when the synthetic chemical metalaxyl was used”

✓ located verbatim in the source · abstract, characters 1025–1297 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Disease incidence with T. harzianum NST-02 plus crude cellulase and β-1,3-glucanase enzymes did not differ significantly from that with metalaxyl.

Treatment
T. harzianum NST-02, in combination with the crude cellulase and β-1,3-glucanase enzymese6
Outcome
incidencee6
Comparator
synthetic chemical metalaxyle6

Not reportedDirection

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

Vigna unguiculata subsp. sesquipedalis
Vigna unguiculata subsp. sesquipedalis · TaxonDavid · Public domain · Wikimedia Commons ↗

Verbatim

e1

“control the damping-off disease of yard long bean (Vigna sesquipedalis L.)”

✓ located verbatim in the source · abstract, characters 150–224 · show in text ↑
e6

“The treatment that used T. harzianum NST-02, in combination with the crude cellulase and β-1,3-glucanase enzymes, resulted in the lowest incidence of disease, but it was not significantly different from the incidence achieved when the synthetic chemical metalaxyl was used”

✓ located verbatim in the source · abstract, characters 1025–1297 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The combined treatment gave the highest yield of yard long bean.

Treatment
combined treatment consisting of T. harzianum NST-02 and the crude cellulase and β-1,3-glucanase enzymese7
Outcome
yielde7
Direction
higheste7

Not reportedComparator

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

Vigna unguiculata subsp. sesquipedalis
Vigna unguiculata subsp. sesquipedalis · TaxonDavid · Public domain · Wikimedia Commons ↗

Verbatim

e7

“Reduction in the level of damping-off disease due to use of the combined treatment consisting of T. harzianum NST-02 and the crude cellulase and β-1,3-glucanase enzymes resulted in the highest yield and the longest length of yard long bean pods”

✓ located verbatim in the source · abstract, characters 1299–1543 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The combined treatment gave the longest yard long bean pods.

Treatment
combined treatment consisting of T. harzianum NST-02 and the crude cellulase and β-1,3-glucanase enzymese7
Outcome
length of yard long bean podse7
Direction
longeste7

Not reportedComparator

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

Vigna unguiculata subsp. sesquipedalis
Vigna unguiculata subsp. sesquipedalis · TaxonDavid · Public domain · Wikimedia Commons ↗

Verbatim

e7

“Reduction in the level of damping-off disease due to use of the combined treatment consisting of T. harzianum NST-02 and the crude cellulase and β-1,3-glucanase enzymes resulted in the highest yield and the longest length of yard long bean pods”

✓ located verbatim in the source · abstract, characters 1299–1543 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Combining T. harzianum and B. cereus treatments with crude cellulase and β-1,3-glucanase enzymes increased T. harzianum and B. cereus populations and root colonization in yard long bean compared with the single antagonists.

Treatment
combination of T. harzianum and B. cereus treatments, with crude cellulase and β-1,3-glucanase enzymese0
Interactor
T. harzianumTrichoderma harzianume0biocontrol_agent
Second interactor
B. cereusBacillus cereuse0biocontrol_agent
Outcome
T. harzianum and B. cereus populations and root colonizatione0
Direction
increasee0
Comparator
treatments that used T. harzianum and B. cereus alonee0

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

Vigna unguiculata subsp. sesquipedalis
Vigna unguiculata subsp. sesquipedalis · TaxonDavid · Public domain · Wikimedia Commons ↗
Trichoderma harzianum
Trichoderma harzianum · InteractorUS Department of Agriculture, Agricultural Research Service, Systematic Botany and Mycology Laboratory, [1] · Public domain · Wikimedia Commons ↗
Bacillus cereus
Bacillus cereus · Second interactorMogana Das Murtey and Patchamuthu Ramasamy · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“control the damping-off disease of yard long bean (Vigna sesquipedalis L.)”

✓ located verbatim in the source · abstract, characters 150–224 · show in text ↑
e0

“In addition, combination of T. harzianum and B. cereus treatments, with crude cellulase and β-1,3-glucanase enzymes, promoted an increase in T. harzianum and B. cereus populations and root colonization and resulted in the increased efficacy of the control of damping-off disease in yard long bean compared with treatments that used T. harzianum and B. cereus alone”

✓ located verbatim in the source · abstract, characters 1545–1909 · show in text ↑

Bacillus cereus · physiology: antioxidant enzymes · Vigna unguiculata (cowpea)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 →

Trichoderma harzianum · disease · Vigna unguiculata (cowpea)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 →

Trichoderma harzianum · yield · Vigna unguiculata (cowpea)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 →

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.