Conversations between kingdoms: small RNAs

- sRNAs can trigger cell non-autonomous gene silencing.
- Cross-kingdom RNAi is important for communication between interactive organisms.
- HIGS is a powerful tool for engineering pathogen-resistant crops.
- Pathogen-derived sRNAs are translocated into host cells to suppress host immunity.
- Mobile sRNA-based tools have great potential in human health and crop protection.