Figure 8.

Hypothetical model of the potential polyamines- (PAs-) based response and its integration with other metabolic pathways in citrus response to Huanglongbing (aka citrus greening disease) caused by Candidatus Liberibacter asiaticus. Solid lines with arrowhead signify positive reaction, dashed lines with blunt-heads indicate negative interaction, while round-dotted lines with arrows represent hypothetical mechanisms or uncharacterized elements. For more details and abbreviations, see the main text.