Silicon amendment to rice plants contributes to reduced feeding in a phloem-sucking insect through modulation of callose deposition.

ABSTRACT: Silicon (Si) uptake by Poaceae plants has beneficial effects on herbivore defense. Increased plant physical barrier and altered herbivorous feeding behaviors are documented to reduce herbivorous arthropod feeding and contribute to enhanced plant defense. Here, we show that Si amendment to rice (Oryza sativa) plants contributes to reduced feeding in a phloem feeder, the brown planthopper (Nilaparvata lugens, BPH), through modulation of callose deposition. We associated the temporal dynamics of BPH feeding with callose deposition on sieve plates and further with callose synthase and hydrolase gene expression in plants amended with Si. Biological assays revealed that BPH feeding was lower in Si-amended than in nonamended plants in the early stages post-BPH infestation. Histologi

SUBMITTER: Yang L 

PROVIDER: S-EPMC5756854 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature