PT  - JOURNAL ARTICLE
AU  - Harner, Andrew D.
AU  - Rowles, Taran K.
AU  - Kar, Suraj
AU  - Briggs, Lauren
AU  - Centinari, Michela
TI  - Feeding by Adult Spotted Lanternfly Affects Carbon Allocation Postinfestation in Young Grapevines
AID  - 10.5344/ajev.2025.25002
DP  - 2025 Jan 01
TA  - American Journal of Enology and Viticulture
PG  - 0760014
VI  - 76
IP  - 1
4099  - http://www.ajevonline.org/content/76/1/0760014.short
4100  - http://www.ajevonline.org/content/76/1/0760014.full
SO  - Am J Enol Vitic.2025 Jan 01; 76
AB  - Background and goals The spotted lanternfly (SLF), Lycorma delicatula White, is an invasive sap-feeding planthopper that can negatively affect grapevine carbon assimilation and allocation, but it is unclear if such negative effects persist postinfestation. This study examined whether adult SLF feeding affects carbon allocation after SLF removal, with the aim to determine if starch storage in young vines was negatively affected by prolonged adult SLF feeding.Methods and key findings 13C pulse labeling was used to measure 13C content of vegetative tissues in young, container-grown Cabernet franc grapevines. We measured total nonstructural carbohydrates in stems and roots. Feeding by SLF affected carbon allocation: SLF-infested vines had about two times greater 13C content in stems and over four times less 13C in roots than control vines, 12 days after SLF removal. We confirmed that SLF feeding can inhibit carbon allocation to roots, as demonstrated via reductions in root 13C.Conclusions and significance This study demonstrates that the effects of adult SLF feeding on carbon allocation may persist following SLF removal, suggesting that carbon reserve refilling may be limited following substantial late season feeding. These results highlight the importance of controlling the exposure time of vines to high populations of adult SLF to avoid negative effects on carbon allocation and storage.