Paper · 2025 · Journal of Natural Pesticide Research

Nematicidal efficacy of native Trichoderma isolates on Meloidogyne incognita and their influence on tomato growth parameters

Puja Jaiswal; Ram Bahadur Khadka; Suraj Baidya; et al.

8
claims
16
verbatim quotes
4
citations
2
research areas
✓
Open access · cc-by-nc

Abstract

Root-knot nematodes (RKN), particularly Meloidogyne incognita , pose a major threat to global agriculture, causing significant crop losses. While fungal antagonists like Trichoderma spp. offer eco-friendly alternatives to chemical nematicides, limited research exists on the comparative efficacy of native Trichoderma spp. in controlling M. incognita and enhancing plant growth under both controlled and greenhouse conditions. This study aims to bridge this gap by identifying the most effective Trichoderma spp. with strong nematicidal potential. The primary objectives of this study were to evaluate the nematicidal activity of 167 Trichoderma isolates against M. incognita second-stage juveniles (J2) under in vitro conditions, assess the most potent species in greenhouse conditions for their ability to suppress root galling and nematode population, and determine the impact of these species on tomato plant growth parameters. A total of 167 Trichoderma isolates were screened in vitro for their ability to induce mortality in M. incognita second-stage juveniles (J2) at 24, 48, and 72 h. The most effective species were further tested in greenhouse conditions using Trichoderma conidial suspensions (10⁶ spores/mL) to assess their impact on root galling, nematode population density, and tomato growth. Among them, 22 isolates exhibited strong nematicidal activity (70 %) within 72 h, with T. asperellum SolT6b achieving the highest J2 mortality (91 %), followed by T. afroharzianum ST10 (88.63 %). In greenhouse conditions, SolT6b and ST10 significantly reduced root galling (by 90.4 % and 89.3 %, respectively) and J2 soil populations (by 67.7 % and 66.6 %, respectively) compared to untreated controls. Additionally, Trichoderma treatment enhanced root biomass and overall plant vigor. These findings highlight the potential of native Trichoderma spp. as sustainable biocontrol agents against M. incognita , offering an effective alternative to chemical nematicides and paving the way for Trichoderma -based biocontrol formulations.

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Claims 8

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Twenty-two Trichoderma isolates produced 70% juvenile nematode mortality within 72 hours.

Interactor
Meloidogyne incognitaMeloidogyne incognitat0e0pest
Second interactor
TrichodermaTrichodermat0e0biocontrol_agent
Outcome
nematicidal activitye0
Value
70 %e0
Qualifier
within 72 he0

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 ↗
Trichoderma
Trichoderma · Second interactor · picture of the genus (one of its species)US Department of Agriculture, Agricultural Research Service, Systematic Botany and Mycology Laboratory, [1] · Public domain · Wikimedia Commons ↗

Verbatim

e0

“22 isolates exhibited strong nematicidal activity (70 %) within 72 h”

✓ located verbatim in the source · abstract, characters 1321–1389 · show in text ↑
t0

“Trichoderma isolates on Meloidogyne incognita and their influence on tomato growth parameters”

✓ located verbatim in the source · title, characters 31–124 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

T. asperellum SolT6b achieved the highest juvenile mortality, 91%.

Interactor
Meloidogyne incognitaMeloidogyne incognitat0e0pest
Second interactor
T. asperellum SolT6bTrichoderma asperellume0biocontrol_agentt0
Outcome
J2 mortalitye0
Direction
higheste0
Value
91 %e0

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 ↗
Trichoderma asperellum
Trichoderma asperellum · Second interactorTashkoskip · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“T. asperellum SolT6b achieving the highest J2 mortality (91 %)”

✓ located verbatim in the source · abstract, characters 1396–1458 · show in text ↑
t0

“Trichoderma isolates on Meloidogyne incognita and their influence on tomato growth parameters”

✓ located verbatim in the source · title, characters 31–124 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

T. afroharzianum ST10 achieved 88.63% juvenile mortality.

Interactor
Meloidogyne incognitaMeloidogyne incognitat0e0pest
Second interactor
T. afroharzianum ST10Trichoderma afroharzianume0biocontrol_agentt0
Outcome
J2 mortalitye0
Value
88.63 %e0

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

“T. asperellum SolT6b achieving the highest J2 mortality (91 %), followed by T. afroharzianum ST10 (88.63 %).”

✓ located verbatim in the source · abstract, characters 1396–1504 · show in text ↑
t0

“Nematicidal efficacy of native Trichoderma isolates on Meloidogyne incognita and their influence on tomato growth parameters”

✓ located verbatim in the source · title, characters 0–124 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

SolT6b reduced tomato root galling by 90.4% against untreated controls.

Treatment
SolT6be0
Interactor
Meloidogyne incognitaMeloidogyne incognitat0e0pest
Second interactor
TrichodermaTrichodermat0e0biocontrol_agent
Outcome
root gallinge0
Direction
reducede0
Value
90.4 %e0
Comparator
untreated controlse0

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 ↗
Trichoderma
Trichoderma · Second interactor · picture of the genus (one of its species)US Department of Agriculture, Agricultural Research Service, Systematic Botany and Mycology Laboratory, [1] · Public domain · Wikimedia Commons ↗

Verbatim

e0

“In greenhouse conditions, SolT6b and ST10 significantly reduced root galling (by 90.4 % and 89.3 %, respectively) and J2 soil populations (by 67.7 % and 66.6 %, respectively) compared to untreated controls.”

✓ located verbatim in the source · abstract, characters 1505–1711 · show in text ↑
t0

“Trichoderma isolates on Meloidogyne incognita and their influence on tomato growth parameters”

✓ located verbatim in the source · title, characters 31–124 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

ST10 reduced tomato root galling by 89.3% against untreated controls.

Treatment
ST10e0
Interactor
Meloidogyne incognitaMeloidogyne incognitat0e0pest
Second interactor
TrichodermaTrichodermat0e0biocontrol_agent
Outcome
root gallinge0
Direction
reducede0
Value
89.3 %e0
Comparator
untreated controlse0

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 ↗
Trichoderma
Trichoderma · Second interactor · picture of the genus (one of its species)US Department of Agriculture, Agricultural Research Service, Systematic Botany and Mycology Laboratory, [1] · Public domain · Wikimedia Commons ↗

Verbatim

e0

“In greenhouse conditions, SolT6b and ST10 significantly reduced root galling (by 90.4 % and 89.3 %, respectively) and J2 soil populations (by 67.7 % and 66.6 %, respectively) compared to untreated controls.”

✓ located verbatim in the source · abstract, characters 1505–1711 · show in text ↑
t0

“Trichoderma isolates on Meloidogyne incognita and their influence on tomato growth parameters”

✓ located verbatim in the source · title, characters 31–124 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

SolT6b reduced juvenile soil populations by 67.7%.

Treatment
SolT6be0
Interactor
Meloidogyne incognitaMeloidogyne incognitat0e0pest
Second interactor
TrichodermaTrichodermat0e0biocontrol_agent
Outcome
J2 soil populationse0
Direction
reducede0
Value
67.7 %e0
Comparator
untreated controlse0

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 ↗
Trichoderma
Trichoderma · Second interactor · picture of the genus (one of its species)US Department of Agriculture, Agricultural Research Service, Systematic Botany and Mycology Laboratory, [1] · Public domain · Wikimedia Commons ↗

Verbatim

e0

“In greenhouse conditions, SolT6b and ST10 significantly reduced root galling (by 90.4 % and 89.3 %, respectively) and J2 soil populations (by 67.7 % and 66.6 %, respectively) compared to untreated controls.”

✓ located verbatim in the source · abstract, characters 1505–1711 · show in text ↑
t0

“Trichoderma isolates on Meloidogyne incognita and their influence on tomato growth parameters”

✓ located verbatim in the source · title, characters 31–124 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

ST10 reduced juvenile soil populations by 66.6%.

Treatment
ST10e0
Interactor
Meloidogyne incognitaMeloidogyne incognitat0e0pest
Second interactor
TrichodermaTrichodermat0e0biocontrol_agent
Outcome
J2 soil populationse0
Direction
reducede0
Value
66.6 %e0
Comparator
untreated controlse0

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 ↗
Trichoderma
Trichoderma · Second interactor · picture of the genus (one of its species)US Department of Agriculture, Agricultural Research Service, Systematic Botany and Mycology Laboratory, [1] · Public domain · Wikimedia Commons ↗

Verbatim

e0

“In greenhouse conditions, SolT6b and ST10 significantly reduced root galling (by 90.4 % and 89.3 %, respectively) and J2 soil populations (by 67.7 % and 66.6 %, respectively) compared to untreated controls.”

✓ located verbatim in the source · abstract, characters 1505–1711 · show in text ↑
t0

“Trichoderma isolates on Meloidogyne incognita and their influence on tomato growth parameters”

✓ located verbatim in the source · title, characters 31–124 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Trichoderma treatment enhanced tomato root biomass and plant vigor.

Treatment
Trichoderma treatmente0
Interactor
TrichodermaTrichodermae0biocontrol_agentt0
Outcome
root biomass and overall plant vigore0
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 ↗
Trichoderma
Trichoderma · Interactor · picture of the genus (one of its species)US Department of Agriculture, Agricultural Research Service, Systematic Botany and Mycology Laboratory, [1] · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Trichoderma treatment enhanced root biomass and overall plant vigor.”

✓ located verbatim in the source · abstract, characters 1726–1794 · show in text ↑
t0

“Trichoderma isolates on Meloidogyne incognita and their influence on tomato growth parameters”

✓ located verbatim in the source · title, characters 31–124 · show in text ↑

Trichoderma · growth · Solanum lycopersicum (tomato)Results differ

53 papers: 50 positive, 3 negative or no effect

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

  1. positive
  2. positive
  3. no effect

49 papers more in this group

See all 53 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.