Paper · 2017 · Universal Journal of Plant Science

Stimulation of Defense Enzymes in Tomato (Solanum lycopersicum L.) and Chilli (Capsicum annuum L.) in Response to Exogenous Application of Different Chemical Elicitors

Y.S.M. Asanka Indunil Kumari; A. Vengadaramana

5
claims
6
verbatim quotes
26
citations
2
research areas
✓
Open access · cc-by

Abstract

The objective of this study was to evaluate the response to exogenous application of different chemical elicitors on the stimulation of defense enzymes such as chitinase, peroxidase, phenylalanine ammonialyase (PAL) and polyphenoloxidase (PPO) in tomato and chilli plants leaves tissues. Chemical elicitors are compounds, which activate chemical defense systems in plants. Various biosynthetic pathways are activated by chemical elicitors in plants depending on the elicitors used. Two times exogenous application of 200 ppm of salicylic acid (SA), ascorbic acid (AA), jasmonic acid (JA) and H2O2 and ethanol (1 mL of 95% ethanol in 1 L distilled water) induced the four defense enzymes production in chilli and tomato plants leaves tissues and significantly reduced viral disease incidence in chilli plants compared to control. SA at 200 ppm enhanced significantly chitinase, peroxidase, PAL and PPO enzymes in leaves tissues of tomato plants. Tomato plants treated with chemical elicitors and control did not show any disease symptoms.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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 5

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The listed elicitors induced four defense enzymes in chilli leaves.

Taxon
chillie0
Organ / stage
leaves tissuese0
Treatment
salicylic acid (SA), ascorbic acid (AA), jasmonic acid (JA) and H2O2 and ethanole0
Outcome
the four defense enzymes productione0
Direction
inducede0

Not reportedComparator

Verbatim

e0

“Two times exogenous application of 200 ppm of salicylic acid (SA), ascorbic acid (AA), jasmonic acid (JA) and H2O2 and ethanol (1 mL of 95% ethanol in 1 L distilled water) induced the four defense enzymes production in chilli and tomato plants leaves tissues”

✓ located verbatim in the source · abstract, characters 482–740 · show in text ↑
e1

“defense enzymes such as chitinase, peroxidase, phenylalanine ammonialyase (PAL) and polyphenoloxidase (PPO)”

✓ located verbatim in the source · abstract, characters 136–243 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The listed elicitors induced four defense enzymes in tomato leaves.

Organ / stage
leaves tissuese0
Treatment
salicylic acid (SA), ascorbic acid (AA), jasmonic acid (JA) and H2O2 and ethanole0
Outcome
the four defense enzymes productione0
Direction
inducede0

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

“Two times exogenous application of 200 ppm of salicylic acid (SA), ascorbic acid (AA), jasmonic acid (JA) and H2O2 and ethanol (1 mL of 95% ethanol in 1 L distilled water) induced the four defense enzymes production in chilli and tomato plants leaves tissues”

✓ located verbatim in the source · abstract, characters 482–740 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

The listed elicitors significantly reduced viral disease incidence in chilli relative to control.

Taxon
chillie0
Treatment
salicylic acid (SA), ascorbic acid (AA), jasmonic acid (JA) and H2O2 and ethanole0
Interactor
virale0pathogen
Outcome
viral disease incidencee0
Direction
reducede0
Comparator
controle0

Verbatim

e0

“Two times exogenous application of 200 ppm of salicylic acid (SA), ascorbic acid (AA), jasmonic acid (JA) and H2O2 and ethanol (1 mL of 95% ethanol in 1 L distilled water) induced the four defense enzymes production in chilli and tomato plants leaves tissues and significantly reduced viral disease incidence in chilli plants compared to control.”

✓ located verbatim in the source · abstract, characters 482–828 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Salicylic acid significantly enhanced chitinase, peroxidase, PAL and PPO in tomato leaves.

Organ / stage
leaves tissuese0
Treatment
SA at 200 ppme0
Outcome
chitinase, peroxidase, PAL and PPO enzymese0
Direction
enhancede0

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

“SA at 200 ppm enhanced significantly chitinase, peroxidase, PAL and PPO enzymes in leaves tissues of tomato plants.”

✓ located verbatim in the source · abstract, characters 829–944 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Tomato plants showed no disease symptoms under chemical elicitors or control.

Treatment
chemical elicitorse0
Outcome
did not show any disease symptomse0

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

“Tomato plants treated with chemical elicitors and control did not show any disease symptoms.”

✓ located verbatim in the source · abstract, characters 945–1037 · show in text ↑

ethanol · physiology: antioxidant enzymes · Solanum lycopersicum (tomato)Positive and negative results

2 papers: 1 positive, 1 negative or no effect

1 in the opposite direction

  1. no effect
See all 2 papers →

salicylic acid · physiology: antioxidant enzymes · Solanum lycopersicum (tomato)Positive and negative results

33 papers: 31 positive, 2 negative or no effect

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

  1. negative
  2. no effect
  3. positive

29 papers more in this group

See all 33 papers →

ascorbic acid · physiology: antioxidant enzymes · Capsicum (peppers)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 →

salicylic acid · physiology: antioxidant enzymes · Capsicum (peppers)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 →

hydrogen peroxide · physiology: antioxidant enzymes · 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 →

jasmonic acid · physiology: antioxidant enzymes · Capsicum (peppers)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 →

jasmonic acid · physiology: antioxidant enzymes · 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 →

jasmonic acid · disease · Capsicum (peppers)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 10 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.