Paper · 2003 · PubMed

Induction of tolerance to root-knot nematode by oxycom.

Safdar A Anwar; M V McKenry; Kwang-Yeol Yang; et al.

12
claims
23
verbatim quotes
11
citations
3
research areas
✓
Open access

Abstract

Oxycom applications increased plant growth and population levels of Meloidogyne incognita on susceptible tomato. A single Oxycom drench at 2,500 ppm applied 7 days prior to inoculation with M. incognita provided remediation of plant growth measured 63 days later. This occurred without reducing nematode population levels. Follow-up drenches at 2,500 ppm at 10-day intervals stunted shoots and roots (P = 0.05). The same application rates at 20-day intervals did not reduce plant growth. Plants receiving multiple drenches had more galls (P = 0.05), females, and second-stage juveniles (J2) per root system compared to plants receiving only the single treatment. Foliar mass and height of plants treated with a single pre-inoculation Oxycom drench were indistinguishable from plants without nematodes. Oxycom treatments activated signaling pathways for plant defense as confirmed by detection of elevated defense gene transcripts in root tissues. The finding of increased reproduction of root-knot nematode without loss of plant growth is consistent with the definition of induced tolerance. Frequency, rate, and timing of applications need further study with other nematodes and various field settings.

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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 12

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Oxycom applications increased growth of susceptible tomato.

Treatment
Oxycom applicationse0
Interactor
Meloidogyne incognitaMeloidogyne incognitae0pathogen
Outcome
plant growthe0
Direction
increasede0

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 ↗
Meloidogyne incognita
Meloidogyne incognita · InteractorPhoto by William Wergin and Richard Sayre. Colorized by Stephen Ausmus. U.S. Department of Agriculture · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“Oxycom applications increased plant growth and population levels of Meloidogyne incognita on susceptible tomato.”

✓ located verbatim in the source · abstract, characters 0–112 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Oxycom applications increased Meloidogyne incognita population levels on susceptible tomato.

Treatment
Oxycom applicationse0
Interactor
Meloidogyne incognitaMeloidogyne incognitae0pathogen
Outcome
population levels of Meloidogyne incognitae0
Direction
increasede0

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 ↗
Meloidogyne incognita
Meloidogyne incognita · InteractorPhoto by William Wergin and Richard Sayre. Colorized by Stephen Ausmus. U.S. Department of Agriculture · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“Oxycom applications increased plant growth and population levels of Meloidogyne incognita on susceptible tomato.”

✓ located verbatim in the source · abstract, characters 0–112 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

A single preinoculation Oxycom drench remediated tomato growth measured 63 days later.

Treatment
A single Oxycom drench at 2,500 ppme0
Interactor
M. incognitaMeloidogyne incognitae0pathogen
Outcome
plant growthe0
Direction
remediatione0

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 ↗
Meloidogyne incognita
Meloidogyne incognita · InteractorPhoto by William Wergin and Richard Sayre. Colorized by Stephen Ausmus. U.S. Department of Agriculture · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“A single Oxycom drench at 2,500 ppm applied 7 days prior to inoculation with M. incognita provided remediation of plant growth measured 63 days later.”

✓ located verbatim in the source · abstract, characters 113–263 · show in text ↑
t0

“susceptible tomato.”

✓ located verbatim in the source · abstract, characters 93–112 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

The single Oxycom drench did not reduce nematode population levels.

Treatment
A single Oxycom drench at 2,500 ppme1
Interactor
M. incognitaMeloidogyne incognitae1pathogen
Outcome
nematode population levelse0
Direction
without 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 ↗
Meloidogyne incognita
Meloidogyne incognita · InteractorPhoto by William Wergin and Richard Sayre. Colorized by Stephen Ausmus. U.S. Department of Agriculture · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“This occurred without reducing nematode population levels.”

✓ located verbatim in the source · abstract, characters 264–322 · show in text ↑
e1

“A single Oxycom drench at 2,500 ppm applied 7 days prior to inoculation with M. incognita”

✓ located verbatim in the source · abstract, characters 113–202 · show in text ↑
t0

“susceptible tomato.”

✓ located verbatim in the source · abstract, characters 93–112 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Oxycom drenches at 10-day intervals stunted tomato shoots and roots.

Treatment
Follow-up drenches at 2,500 ppm at 10-day intervalse0
Outcome
shoots and rootse0
Direction
stuntede0

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

“Follow-up drenches at 2,500 ppm at 10-day intervals stunted shoots and roots (P = 0.05).”

✓ located verbatim in the source · abstract, characters 323–411 · show in text ↑
t0

“susceptible tomato.”

✓ located verbatim in the source · abstract, characters 93–112 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Oxycom drenches at 20-day intervals did not reduce tomato growth.

Treatment
application rates at 20-day intervalse0
Outcome
plant growthe0
Direction
did not reducee0

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 same application rates at 20-day intervals did not reduce plant growth.”

✓ located verbatim in the source · abstract, characters 412–487 · show in text ↑
t0

“susceptible tomato.”

✓ located verbatim in the source · abstract, characters 93–112 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Multiple Oxycom drenches increased root gall numbers compared with a single treatment.

Treatment
multiple drenchese0
Outcome
gallse0
Direction
moree0
Comparator
only the single treatmente0

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

“Plants receiving multiple drenches had more galls (P = 0.05), females, and second-stage juveniles (J2) per root system compared to plants receiving only the single treatment.”

✓ located verbatim in the source · abstract, characters 488–662 · show in text ↑
t0

“susceptible tomato.”

✓ located verbatim in the source · abstract, characters 93–112 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Multiple Oxycom drenches increased nematode females and second-stage juveniles per root system versus a single treatment.

Treatment
multiple drenchese0
Outcome
females, and second-stage juveniles (J2) per root systeme0
Direction
moree0
Comparator
only the single treatmente0

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

“Plants receiving multiple drenches had more galls (P = 0.05), females, and second-stage juveniles (J2) per root system compared to plants receiving only the single treatment.”

✓ located verbatim in the source · abstract, characters 488–662 · show in text ↑
t0

“susceptible tomato.”

✓ located verbatim in the source · abstract, characters 93–112 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Tomato foliar mass and height after one preinoculation Oxycom drench were indistinguishable from plants without nematodes.

Treatment
a single pre-inoculation Oxycom drenche0
Outcome
Foliar mass and heighte0
Direction
indistinguishablee0
Comparator
plants without nematodese0

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

“Foliar mass and height of plants treated with a single pre-inoculation Oxycom drench were indistinguishable from plants without nematodes.”

✓ located verbatim in the source · abstract, characters 663–801 · show in text ↑
t0

“susceptible tomato.”

✓ located verbatim in the source · abstract, characters 93–112 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Oxycom treatment elevated defense gene transcripts in tomato roots.

Organ / stage
root tissuese0
Treatment
Oxycom treatmentse0
Outcome
defense gene transcriptse0
Direction
elevatede0

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

“Oxycom treatments activated signaling pathways for plant defense as confirmed by detection of elevated defense gene transcripts in root tissues.”

✓ located verbatim in the source · abstract, characters 802–946 · show in text ↑
t0

“susceptible tomato.”

✓ located verbatim in the source · abstract, characters 93–112 · show in text ↑
Mechanismauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors interpret Oxycom as inducing root-knot nematode tolerance without loss of tomato growth.

Outcome
induced tolerancee0
Qualifier
without loss of plant growthe0

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 finding of increased reproduction of root-knot nematode without loss of plant growth is consistent with the definition of induced tolerance.”

✓ located verbatim in the source · abstract, characters 947–1091 · show in text ↑
t0

“susceptible tomato.”

✓ located verbatim in the source · abstract, characters 93–112 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors recommend studying Oxycom application frequency, rate and timing with other nematodes and field settings.

Outcome
Frequency, rate, and timing of applicationse0

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

“Frequency, rate, and timing of applications need further study with other nematodes and various field settings.”

✓ located verbatim in the source · abstract, characters 1092–1203 · show in text ↑
t0

“susceptible tomato.”

✓ located verbatim in the source · abstract, characters 93–112 · show in text ↑

application · pest · Solanum lycopersicum (tomato)Positive and negative results

43 papers: 34 positive, 9 negative or no effect

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

  1. positive
  2. positive
  3. positive

39 papers more in this group

See all 43 papers →

application · Meloidogyne incognita · Solanum lycopersicum (tomato)Positive and negative results

45 papers: 43 positive, 2 negative or no effect

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

  1. no effect
  2. negative
  3. positive

41 papers more in this group

See all 45 papers →

application · growth · Solanum lycopersicum (tomato)Positive and negative results

253 papers: 225 positive, 28 negative or no effect

27 papers in the same direction as this paper · 225 in the opposite direction

  1. positive
  2. positive
  3. positive

249 papers more in this group

See all 253 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.