Abstract
In this study, 41 isolates of the genus Trichoderma including six species of Trichoderma arundinaceum, T. asperellum, T. atroviride, T. harzianum, T. longibrachiatum and T. virens were isolated from soils of cucumber fields in Kermanshah province, and their efficacy to control Phytophthora drechsleri, the causal agent of cucumber damping off, was investigated in laboratory and greenhouse conditions. In direct confrontation between Trichoderma isolates and the pathogen, all isolates were able to promote, establish, and sporulate on pathogen mycelia. Through dual culture test, the most inhibitory effect on pathogen growth (62.89%) was recorded for T. harzianum (isolate T1). Volatile compounds of T. harzianum (isolate T7) had the greatest mycelial growth inhibition (46.59%) compared with control. Complete growth inhibition of the pathogen was recorded when the growth medium was supplemented with culture filtrate of Trichoderma isolates at concentration of 15% and 30%. At the concentrations of 15% and 30%, 18 isolates and 22 isolates completely inhibited the pathogen expansion respectively. In the greenhouse, the results of data analysis on the survival percent of plants in various treatments showed significant differences between the isolates of Trichoderma in terms of preventing cucumber damping off. In conclusion, T. asperellum showed the highest ability to control Phytophthora damping off and promoting cucumber growth which is a new record for Iran. This species can be an appropriate choice for biological control of the disease caused by P. drechsleri in cucumber.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by-sa. 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 10
Claim · model-written summary
All Trichoderma isolates established and sporulated on pathogen mycelia in confrontation tests.
Verbatim
e0“In direct confrontation between Trichoderma isolates and the pathogen, all isolates were able to promote, establish, and sporulate on pathogen mycelia.”
Claim · model-written summary
T. harzianum isolate T1 had the greatest inhibitory effect on pathogen growth, 62.89%, in dual culture.
- Taxon
- T. harzianum
Trichoderma harzianume0 - Treatment
- T. harzianum (isolate T1)e0
- Interactor
- Phytophthora drechsleriPhytophthora drechslerit0pathogen
- Outcome
- pathogen growthe0
- Direction
- most inhibitorye0
- Value
- 62.89%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Through dual culture test, the most inhibitory effect on pathogen growth (62.89%) was recorded for T. harzianum (isolate T1).”
t0“Phytophthora drechsleri”
Claim · model-written summary
Volatiles of T. harzianum isolate T7 inhibited pathogen mycelial growth by 46.59% relative to control.
- Taxon
- T. harzianumTrichoderma harzianume0
- Treatment
- Volatile compounds of T. harzianum (isolate T7)e0
- Interactor
- Phytophthora drechsleriPhytophthora drechslerit0pathogen
- Outcome
- mycelial growth inhibitione0
- Direction
- inhibitione0
- Value
- 46.59%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Volatile compounds of T. harzianum (isolate T7) had the greatest mycelial growth inhibition (46.59%) compared with control.”
t0“Phytophthora drechsleri”
Claim · model-written summary
Trichoderma culture filtrate at 15% and 30% completely inhibited pathogen growth.
- Taxon
- Trichoderma isolatese0
- Treatment
- culture filtrate of Trichoderma isolates at concentration of 15% and 30%e0
- Interactor
- Phytophthora drechsleriPhytophthora drechslerit0pathogen
- Outcome
- growth inhibition of the pathogene0
- Direction
- Complete growth inhibitione0
Not reportedComparator
Verbatim
e0“Complete growth inhibition of the pathogen was recorded when the growth medium was supplemented with culture filtrate of Trichoderma isolates at concentration of 15% and 30%.”
t0“Phytophthora drechsleri”
Claim · model-written summary
At 15% filtrate, 18 isolates completely inhibited pathogen expansion.
- Taxon
- Trichoderma spp.Trichodermat0
- Interactor
- Phytophthora drechsleriPhytophthora drechslerit0pathogen
- Outcome
- pathogen expansione0
- Value
- 18 isolatese0
- Qualifier
- 15%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the concentrations of 15% and 30%, 18 isolates and 22 isolates completely inhibited the pathogen expansion respectively.”
t0“Trichoderma spp. for ability to control cucumber damping-off caused by Phytophthora drechsleri”
Claim · model-written summary
At 30% filtrate, 22 isolates completely inhibited pathogen expansion.
- Taxon
- Trichoderma spp.Trichodermat0
- Interactor
- Phytophthora drechsleriPhytophthora drechslerit0pathogen
- Outcome
- pathogen expansione0
- Value
- 22 isolatese0
- Qualifier
- 30%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the concentrations of 15% and 30%, 18 isolates and 22 isolates completely inhibited the pathogen expansion respectively.”
t0“Trichoderma spp. for ability to control cucumber damping-off caused by Phytophthora drechsleri”
Claim · model-written summary
Cucumber survival differed significantly among Trichoderma isolate treatments in the greenhouse.
- Taxon
- cucumber
Cucumis sativust0 - Treatment
- isolates of Trichodermae0
- Interactor
- TrichodermaTrichodermae0biocontrol_agent
- Outcome
- survival percent of plantse0
- Setting
- greenhousee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the greenhouse, the results of data analysis on the survival percent of plants in various treatments showed significant differences between the isolates of Trichoderma in terms of preventing cucumber damping off.”
t0“cucumber damping-off”
Claim · model-written summary
T. asperellum had the highest reported ability to control cucumber Phytophthora damping off.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- T. asperellume0
- Interactor
- Phytophthora
Phytophthorae0pathogen - Second interactor
- T. asperellum
Trichoderma asperellume0biocontrol_agent - Outcome
- control Phytophthora damping offe0
- Direction
- higheste0
- Setting
- Irane0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In conclusion, T. asperellum showed the highest ability to control Phytophthora damping off and promoting cucumber growth which is a new record for Iran.”
Claim · model-written summary
T. asperellum promoted cucumber growth.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- T. asperellume0
- Interactor
- T. asperellumTrichoderma asperellume0biocontrol_agent
- Outcome
- cucumber growthe0
- Direction
- promotinge0
- Setting
- Irane0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In conclusion, T. asperellum showed the highest ability to control Phytophthora damping off and promoting cucumber growth which is a new record for Iran.”
Claim · model-written summary
The authors recommended T. asperellum for biological control of cucumber disease caused by P. drechsleri.
- Taxon
- cucumberCucumis sativuse0
- Interactor
- P. drechsleriPhytophthora drechslerie0pathogen
- Outcome
- biological control of the disease caused by P. drechslerie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This species can be an appropriate choice for biological control of the disease caused by P. drechsleri in cucumber.”
The same questions in other papers
Trichoderma asperellum · growth · Cucumis sativus (cucumber)Results agree
1 paper in the same direction as this paper
- positive
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.