Abstract
The objective of this work was to evaluate the bioactivity of ethanolic leaf extracts from four species of the genus Piper against the tomato leafminer Tuta absoluta (Lepidoptera: Gelechiidae) under laboratory conditions. The evaluated species were: P. amalago var. medium, P. glabratum, P. mikanianum, and P. mollicomum. In the initial screening assay (extract concentration of 2,000 mg L-1), all tested extracts caused significant larval mortality, particularly the extract of P. amalago var. medium; however, no extracts reduced the weight of the surviving larvae. The extract from P. amalago var. medium at the concentration of 1,011 mg L-1 caused a significant lengthening of the larval and pupal stages. The ethanolic leaf extract of P. amalago var. medium is promising for the control of T. absoluta larvae in tomato, since it exhibits acute toxicity toward these caterpillars at the concentration of 2,000 mg L-1 and affects the insect's development by reducing its survival and lengthening the larval and pupal stages.
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Claims 8
Claim · model-written summary
Piper amalago var. medium extract caused significant Tuta absoluta larval mortality at 2,000 mg L-1.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- extract of P. amalago var. mediume0
- Interactor
- Tuta absoluta
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Tuta absolutat0pest - Outcome
- larval mortalitye0
- Value
- 2,000 mg L-1e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“In the initial screening assay (extract concentration of 2,000 mg L-1), all tested extracts caused significant larval mortality, particularly the extract of P. amalago var. medium”
t0“Tuta absoluta (Lepidoptera: Gelechiidae) in tomato”
Claim · model-written summary
P. glabratum extract caused significant Tuta absoluta larval mortality at 2,000 mg L-1.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- P. glabratume1
- Interactor
- Tuta absolutaTuta absolutat0pest
- Outcome
- larval mortalitye0
- Value
- 2,000 mg L-1e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the initial screening assay (extract concentration of 2,000 mg L-1), all tested extracts caused significant larval mortality”
t0“Tuta absoluta (Lepidoptera: Gelechiidae) in tomato”
e1“P. amalago var. medium, P. glabratum, P. mikanianum, and P. mollicomum.”
Claim · model-written summary
P. mikanianum extract caused significant Tuta absoluta larval mortality at 2,000 mg L-1.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- P. mikanianume1
- Interactor
- Tuta absolutaTuta absolutat0pest
- Outcome
- larval mortalitye0
- Value
- 2,000 mg L-1e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the initial screening assay (extract concentration of 2,000 mg L-1), all tested extracts caused significant larval mortality”
t0“Tuta absoluta (Lepidoptera: Gelechiidae) in tomato”
e1“P. amalago var. medium, P. glabratum, P. mikanianum, and P. mollicomum.”
Claim · model-written summary
P. mollicomum extract caused significant Tuta absoluta larval mortality at 2,000 mg L-1.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- P. mollicomume1
- Interactor
- Tuta absolutaTuta absolutat0pest
- Outcome
- larval mortalitye0
- Value
- 2,000 mg L-1e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the initial screening assay (extract concentration of 2,000 mg L-1), all tested extracts caused significant larval mortality”
t0“Tuta absoluta (Lepidoptera: Gelechiidae) in tomato”
e1“P. amalago var. medium, P. glabratum, P. mikanianum, and P. mollicomum.”
Claim · model-written summary
The tested extracts did not reduce surviving Tuta absoluta larval weight.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- extractse0
- Interactor
- Tuta absolutaTuta absolutat0pest
- Outcome
- weight of the surviving larvaee0
- Direction
- no extracts reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no extracts reduced the weight of the surviving larvae”
t0“Tuta absoluta (Lepidoptera: Gelechiidae) in tomato”
Claim · model-written summary
P. amalago var. medium extract at 1,011 mg L-1 significantly lengthened the Tuta absoluta larval stage.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- extract from P. amalago var. medium at the concentration of 1,011 mg L-1e0
- Interactor
- Tuta absolutaTuta absolutat0pest
- Outcome
- larvale0
- Direction
- lengtheninge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The extract from P. amalago var. medium at the concentration of 1,011 mg L-1 caused a significant lengthening of the larval and pupal stages.”
t0“Tuta absoluta (Lepidoptera: Gelechiidae) in tomato”
Claim · model-written summary
P. amalago var. medium extract at 1,011 mg L-1 significantly lengthened the Tuta absoluta pupal stage.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- extract from P. amalago var. medium at the concentration of 1,011 mg L-1e0
- Interactor
- Tuta absolutaTuta absolutat0pest
- Outcome
- pupal stagese0
- Direction
- lengtheninge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The extract from P. amalago var. medium at the concentration of 1,011 mg L-1 caused a significant lengthening of the larval and pupal stages.”
t0“Tuta absoluta (Lepidoptera: Gelechiidae) in tomato”
Claim · model-written summary
The authors consider P. amalago var. medium leaf extract promising for control of Tuta absoluta larvae in tomato.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- ethanolic leaf extract of P. amalago var. mediume0
- Interactor
- T. absolutaTuta absolutae0pest
- Outcome
- control of T. absoluta larvaee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The ethanolic leaf extract of P. amalago var. medium is promising for the control of T. absoluta larvae in tomato”
The same questions in other papers
botanical · Tuta absoluta · Solanum lycopersicum (tomato)Positive and negative results
20 papers in the same direction as this paper · 2 in the opposite direction
- positive
- negative
- negative
19 papers more in this group
See all 23 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.