Original title: Hydroxycinnamic Acid Amides Emerge as Multifunctional Molecules Involved in Regeneration and Volatile Signalling During Wound Responses
Plants make hydroxycinnamic acid amides, or HCAAsHydroxycinnamic acid amides are plant-made compounds formed from hydroxycinnamic acids and amines., from other small molecules. Researchers studied tomato plants engineered to make more of these compounds, then wounded them and compared their responses with ordinary plants. The high-HCAA plants built up more material that reinforced the wound area and showed changes linked to tissue repair. They also released airborne compounds that switched on defence-related genes in nearby tomato plants that had not been injured.
Imagine patching a tear in a jacket while someone nearby notices the smell of the repair materials. The patch has to strengthen the damaged spot, and the smell may also alert the other person to prepare. In this paper, the reinforced patch corresponds to changes at the tomato wound, while the airborne smell corresponds to compounds that trigger defence-related genes in nearby plants.
Mechanical damage can affect more than the injured plant: the study suggests wounded tomatoes with elevated HCAAs release airborne compounds that trigger defence-related genes in nearby plants. It also links these compounds with changes in wound-site structure and tissue regeneration.
The abstract reports associations between elevated HCAAs, wound-site changes, regeneration, and volatile signalling, but does not establish which changes directly cause improved repair. It does not specify the identities of the airborne compounds or establish how broadly the findings apply beyond the tomato plants studied.
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Hydroxycinnamic Acid Amides Emerge as Multifunctional Molecules Involved in Regeneration and Volatile Signalling During Wound Responses — Carmen M. Hernandez, C Andrade, Francisco Vera‐Sirera et al. — Plant Cell & Environment — doi:10.1111/pce.70962
Abstract licence: CC BY
Explanation generated by Synthesis from the abstract — it is not the original paper.