Abstract
The suitability of Trichoderma harzianum and Gliocladium roseum as biocontrol agents on the in vitro growing of Septoria tritici and their efficiency in reducing disease severity on wheat plants was evaluated under greenhouse conditions. For the in vitro tests, the micro-organisms were confronted through dual cultures on PDA. A histopathological clarification and staining technique was used in order to observe, if the penetration and development of the pathogen on wheat leaves was modified in the presence of the antagonistic agents. A highly significant effect of T. harzianum and G. roseum on the development of S'. tritici colonies was observed. Both antagonistic agents grew over the S. tritici colony and covered it completely. T. harzianum was more efficient than G. roseum in inhibiting the pathogen. The coiling of the hypha of T. harzianum on short sections of S. tritici colony was observed with the bioassay on wheat leaves. The spore germination and the superficial mycelial development of S. tritici was affected by T. harzianum and G. roseum. Although, the further stomatic penetration of S. tritici was not restrained. The in vivo inhibitory capacity of the two antagonists assayed were not expressed on the wheat plants tested. However, there has been a tendency to reduce the percentage of necrotic area with pycnidial coverage when compared with the control. Further studies are needed before unequivocal conclusions can be drawn. Greenhouse experiments are in progress.
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Claims 8
Claim · model-written summary
Both antagonists significantly affected S. tritici colony development.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- T. harzianum and G. roseume0
- Interactor
- S'. triticie0pathogen
- Outcome
- development of S'. tritici coloniese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A highly significant effect of T. harzianum and G. roseum on the development of S'. tritici colonies was observed.”
t0“wheat”
Claim · model-written summary
Both antagonists completely covered the S. tritici colony.
- Taxon
- wheatTriticum aestivumt0
- Interactor
- S. tritici
Zymoseptoria triticie0pathogen - Outcome
- covered it completelye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both antagonistic agents grew over the S. tritici colony and covered it completely.”
t0“wheat”
Claim · model-written summary
T. harzianum inhibited the pathogen more efficiently than G. roseum.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- T. harzianume0
- Interactor
- pathogene0pathogen
- Second interactor
- T. harzianum
Trichoderma harzianume0biocontrol_agent - Outcome
- inhibiting the pathogene0
- Direction
- more efficiente0
- Comparator
- G. roseume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“T. harzianum was more efficient than G. roseum in inhibiting the pathogen.”
t0“wheat”
Claim · model-written summary
T. harzianum hyphae coiled around short sections of S. tritici colonies on wheat leaves.
- Taxon
- wheatTriticum aestivume0
- Interactor
- S. triticiZymoseptoria triticie0pathogen
- Second interactor
- T. harzianumTrichoderma harzianume0biocontrol_agent
- Outcome
- coiling of the hypha of T. harzianum on short sections of S. tritici colonye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The coiling of the hypha of T. harzianum on short sections of S. tritici colony was observed with the bioassay on wheat leaves.”
t0“wheat”
Claim · model-written summary
The antagonists affected S. tritici spore germination and surface mycelial development.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- T. harzianum and G. roseume0
- Interactor
- S. triticiZymoseptoria triticie0pathogen
- Outcome
- spore germination and the superficial mycelial development of S. triticie0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The spore germination and the superficial mycelial development of S. tritici was affected by T. harzianum and G. roseum.”
t0“wheat”
Claim · model-written summary
The antagonists did not restrain subsequent stomatal penetration by S. tritici.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Trichoderma harzianum and Gliocladium roseumt0
- Interactor
- S. triticiZymoseptoria triticie0pathogen
- Outcome
- stomatic penetration of S. triticie0
- Direction
- not restrainede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the further stomatic penetration of S. tritici was not restrained.”
t0“Evaluation of Trichoderma harzianum and Gliocladium roseum in controlling leaf blotch of wheat (Septoria tritici) under in vitro and greenhouse conditions”
Claim · model-written summary
The two antagonists did not show inhibitory capacity on the tested wheat plants.
- Taxon
- wheatTriticum aestivume0
- Treatment
- two antagonistse0
- Outcome
- in vivo inhibitory capacitye0
- Direction
- not expressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The in vivo inhibitory capacity of the two antagonists assayed were not expressed on the wheat plants tested.”
t0“wheat”
Claim · model-written summary
Necrotic area with pycnidial coverage tended to decline relative to the control.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Trichoderma harzianum and Gliocladium roseumt0
- Outcome
- percentage of necrotic area with pycnidial coveragee0
- Direction
- reducee0
- Qualifier
- tendencye0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there has been a tendency to reduce the percentage of necrotic area with pycnidial coverage when compared with the control.”
t0“Evaluation of Trichoderma harzianum and Gliocladium roseum in controlling leaf blotch of wheat (Septoria tritici) under in vitro and greenhouse conditions”
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Clonostachys rosea · disease · Triticum aestivum (wheat)Results agree
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Trichoderma harzianum · disease · Triticum aestivum (wheat)Results agree
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- positive
- positive
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10 papers more in this group
See all 14 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.