Abstract
Greenhouse and laboratory studies were conducted to determine the effect of the physical injury inflicted by feeding soybean thrips, Sericothrips variabilis (Beach), on penetration of acifluorfen in soybean, Glycine max (L.) Merrill. In these studies, S. variabilis feeding injury was observed to have a minimal effect on 14C-acifluorfen penetration while attempts to simulate rasping type feeding injury increased 14C-acifluorfen penetration two to three fold. Scrutiny of the soybean leaflet tissues damaged by feeding S. variabilis , using both light and scanning electron microscopy, revealed that epidermal cells were collapsed and many mesophyll cells destroyed. There were no gashes on the leaf surface to indicate a rasping-sucking feeding behavior as described in the early literature. The primary damage on the surface of the leaves was holes, indicating S. variabilis has a piercing-sucking type feeding action. These observations on S. variabilts feeding support recent findings made for other thrips species. Based on these findings, we concluded that the piercing type feeding injury caused by S. variabilis does not produce wounds on the leaf surface of sufficient quantity or size-compared with wounds that were predicted for a rasping-sucking action-to allow a significant increase of 14C-acifluorfen into the soybean leaf.
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Claims 6
Claim · model-written summary
Actual soybean thrips feeding injury had minimal effect on acifluorfen penetration.
- Taxon
- Soybean
Glycine maxt0 - Treatment
- S. variabilis feeding injurye0
- Interactor
- S. variabilise0pest
- Outcome
- 14C-acifluorfen penetratione0
- Direction
- minimal effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“S. variabilis feeding injury was observed to have a minimal effect on 14C-acifluorfen penetration”
t0“in Soybean”
Claim · model-written summary
Simulated rasping injury increased acifluorfen penetration two to three fold.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- rasping type feeding injurye0
- Outcome
- 14C-acifluorfen penetratione0
- Direction
- increasede0
- Value
- two to three folde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“attempts to simulate rasping type feeding injury increased 14C-acifluorfen penetration two to three fold”
t0“in Soybean”
Claim · model-written summary
Thrips damaged leaflet tissue had collapsed epidermal cells and destroyed mesophyll cells.
- Taxon
- soybeanGlycine maxt0
- Organ / stage
- epidermal cellse0
- Interactor
- Soybean Thrips
Neohydatothrips variabilist0pest - Outcome
- epidermal cells were collapsed and many mesophyll cells destroyede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“epidermal cells were collapsed and many mesophyll cells destroyed”
t0“Soybean Thrips”
Claim · model-written summary
Thrips damaged soybean leaf surfaces lacked gashes expected of rasping sucking feeding.
- Taxon
- SoybeanGlycine maxt0
- Organ / stage
- leaf surfacee0
- Interactor
- Soybean ThripsNeohydatothrips variabilist0pest
- Outcome
- no gashes on the leaf surfacee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were no gashes on the leaf surface to indicate a rasping-sucking feeding behavior”
t0“Soybean Thrips”
Claim · model-written summary
Holes were the main leaf surface damage, indicating piercing sucking feeding by the thrips.
- Taxon
- SoybeanGlycine maxt0
- Organ / stage
- leavese0
- Interactor
- S. variabilise0pest
- Outcome
- primary damage on the surface of the leaves was holese0
- Qualifier
- piercing-sucking type feeding actione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The primary damage on the surface of the leaves was holes, indicating S. variabilis has a piercing-sucking type feeding action”
t0“in Soybean”
Claim · model-written summary
Authors concluded piercing injury was insufficient to substantially increase acifluorfen entry.
- Taxon
- soybeanGlycine maxe0
- Interactor
- S. variabilise0pest
- Outcome
- significant increase of 14C-acifluorfen into the soybean leafe0
- Qualifier
- does not produce wounds on the leaf surface of sufficient quantity or sizee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the piercing type feeding injury caused by S. variabilis does not produce wounds on the leaf surface of sufficient quantity or size-compared with wounds that were predicted for a rasping-sucking action-to allow a significant increase of 14C-acifluorfen into the soybean leaf”
The same questions in other papers
infection · molecular: metabolites · Glycine max (soybean)Positive and negative results
4 papers in the same direction as this paper · 12 in the opposite direction
- positive
- positive
- positive
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See all 17 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.