Claim · model-written summary
Girdling decreased percent moisture, free sugars and amino nitrogen in soybean leaves.
- Taxon
- soybean
Glycine maxe0 - Treatment
- petiole girdling by threecornered alfalfa hoppere0
- Interactor
- Spissistilus festinus
Spissistilus festinuse0herbivore - Outcome
- percent moisture, free sugars, and amino nitrogene1
- Direction
- decreasese1
Not reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Specific leaf weight, percent moisture, and free sugar, starch, and amino nitrogen content of soybean ( Glycine max (L.) Merrill) leaves were measured at 1, 3, 7, and 10 day(s) after petiole girdling by threecornered alfalfa hopper, Spissistilus festinus (Say) (Homoptera: Membracidae) nymphs”
e1“Leaf starch was increased at 1, 3, and 7 day(s) after girdling and largely accounted for corresponding increases in specific leaf weight and decreases in percent moisture, free sugars, and amino nitrogen”
Title
Soybean leaf responses to threecornered alfalfa hopper petiole girdling
D. W. Spurgeon; A. J. Mueller Entomologia Experimentalis et Applicata 1993. doi:10.1111/j.1570-7458.1993.tb01670.x
Other claims from this paper (8)
- Intervention effect Leaf starch increased at 1, 3 and 7 days after petiole girdling by the hopper.
- Mechanism Leaf starch largely accounted for the increase in specific leaf weight after girdling.
- Intervention effect Specific leaf weight increased 10 days after girdling despite no increase in starch.
- Intervention effect Amino nitrogen content decreased 10 days after girdling.
- Intervention effect After correction for starch, free sugar content was not affected by girdling.
- Intervention effect After correction for starch, amino nitrogen content was reduced only at 3 and 10 days after girdling.
- Intervention effect The amino nitrogen to free sugar ratio was reduced only at 10 days after girdling.
- Mechanism Changes in leaf starch indicated a rapid but reversible effect of girdling on leaf carbohydrate metabolism, as the authors interpret it.