Abstract
Trichoderma harzianum isolates have been broadly used for biocontrol of plant diseases caused by fungi. Cladosporium herbarum is a common saprophyte and seed borne fungus, which is easy to manipulate under controlled conditions. It was chosen as a model to test the effectivity of seed treatments with T. harzianum. Common bean seeds (cv. Pérola) contaminated with C. herbarum were treated with conidial suspension (CS) and autoclaved filtrate (AF) of five isolates of T. harzianum and subsequently submitted to health and germination tests. The proportion of normal seedlings formed, the length of roots, hypocotyls and leaves, and total plantlet length, total plantlet biomass, root mass ratio (RMR), stem mass ratio (SMR), leaf mass ratio (LMR), aerial part/root system ratio (AP/RS) and leaf area were also evaluated. Isolates CEN289 and CEN290 (CS and AF) provided 66 to 77% of supression of C. herbarum on seeds and a higher number of normal seedlings as compared with control. It also yielded a higher total biomass of plantlets. Moreover treatment with isolates CEN289 and CEN290 increased root and stem length in the experiments with CS. Such results indicate the potential of T. harzianum for seed treatment and suggest that it should be further tested as control for seed borne fungal diseases and as a plant growth promoter. The better performance found for CEN289 and CEN290 confirms the variability in terms of biocontrol activity among strains of T. harzianum.
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Claims 7
Claim · model-written summary
CEN289 suppressed seedborne C. herbarum by 66 to 77%.
- Taxon
- common bean
Phaseolus vulgarist0 - Material
- CEN289e0
- Treatment
- CS and AFe0
- Interactor
- C. herbarumCladosporium herbarume0pathogen
- Outcome
- supression of C. herbarum on seedse0
- Direction
- supressione0
- Value
- 66 to 77%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Isolates CEN289 and CEN290 (CS and AF) provided 66 to 77% of supression of C. herbarum on seeds and a higher number of normal seedlings as compared with control.”
t0“common bean”
Claim · model-written summary
CEN290 suppressed seedborne C. herbarum by 66 to 77%.
- Taxon
- common beanPhaseolus vulgarist0
- Material
- CEN290e0
- Treatment
- CS and AFe0
- Interactor
- C. herbarumCladosporium herbarume0pathogen
- Outcome
- supression of C. herbarum on seedse0
- Direction
- supressione0
- Value
- 66 to 77%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Isolates CEN289 and CEN290 (CS and AF) provided 66 to 77% of supression of C. herbarum on seeds and a higher number of normal seedlings as compared with control.”
t0“common bean”
Claim · model-written summary
CEN289 and CEN290 treatments produced more normal seedlings than control.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- Isolates CEN289 and CEN290 (CS and AF)e0
- Outcome
- number of normal seedlingse0
- Direction
- highere0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Isolates CEN289 and CEN290 (CS and AF) provided 66 to 77% of supression of C. herbarum on seeds and a higher number of normal seedlings as compared with control.”
t0“common bean”
Claim · model-written summary
The treatments increased plantlet total biomass.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- Trichoderma harzianumt0
- Outcome
- total biomass of plantletse0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It also yielded a higher total biomass of plantlets.”
t0“Supression of seed borne Cladosporium herbarum on common bean seed by Trichoderma harzianum and promotion of seedling development”
Claim · model-written summary
CEN289 and CEN290 conidial suspension treatments increased root and stem length.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- isolates CEN289 and CEN290e0
- Outcome
- root and stem lengthe0
- Direction
- increasede0
- Qualifier
- experiments with CSe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Moreover treatment with isolates CEN289 and CEN290 increased root and stem length in the experiments with CS.”
t0“common bean”
Claim · model-written summary
Biocontrol activity varied among T. harzianum strains.
- Taxon
- common beanPhaseolus vulgarist0
- Outcome
- variability in terms of biocontrol activity among strains of T. harzianume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The better performance found for CEN289 and CEN290 confirms the variability in terms of biocontrol activity among strains of T. harzianum.”
t0“common bean”
Claim · model-written summary
The authors recommend further testing T. harzianum seed treatments for disease control and growth promotion.
- Taxon
- common beanPhaseolus vulgarist0
- Outcome
- control for seed borne fungal diseases and as a plant growth promotere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it should be further tested as control for seed borne fungal diseases and as a plant growth promoter.”
t0“common bean”
The same questions in other papers
Trichoderma harzianum · growth · Phaseolus vulgaris (common bean)Positive and negative results
16 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- positive
14 papers more in this group
See all 18 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.