Harnessing CNC-Carrier Nanomaterials for Enhanced Zn²⁺-Mediated Inhibition of Oomycete Asexual Reproduction

Journal of Agricultural and Food Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 31, 2025

Oomycetes are devastating plant pathogens causing major crop losses, with spores as key infection sources. Inhibiting asexual reproduction, especially sporangium formation and spore release, is crucial for disease prevention. Zn2+ has shown potential in inhibiting oomycete but excessive concentrations can cause cytotoxicity environmental risks. To address this, we used polydopamine (PDA) to complex form a PDA@Zn2+ coating on cellulose nanocrystals (CNCs) through hydrogen bonding. This ionic nanopesticide (CNC@PDA@Zn2+) enhances effectiveness against oomycetes while reducing dosage improving biosafety. Bioexperimental results indicate that CNC@PDA@Zn2+ significantly inhibits release from Phytophthora capsici (P. capsici) by suppressing the expression of sporulation genes (PcATP4, cdc, G-protein), disrupting cell membranes, altering organelle structures. In vivo, it reduces P. pepper leaves, even presence mycelium. study highlights promising biobased nanomaterial sustainable protection.

Language: Английский

An ultrafast dual-channel ratiometric fluorescence probe based on functionalized N-GQDs for dynamic monitoring of salicylic acid in plants

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162925 - 162925

Published: April 1, 2025

Language: Английский