| Title: | Identification of a damage-associated molecular pattern (DAMP) receptor and its cognate peptide ligand in sweet potato (Ipomoea batatas) |
| Author(s): | Lu HH; Meents AK; Fliegmann J; Hwang MJ; Suen CS; Masch D; Felix G; Mithofer A; Yeh KW; |
| Address: | "Institute of Plant Biology, National Taiwan University, Taipei, Taiwan. Research Group Plant Defense Physiology, Max Planck Institute for Chemical Ecology, Jena, Germany. Center for Plant Molecular Biology (ZMBP), University of Tubingen, Tubingen, Germany. Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan. The Weather Climate and Disaster Research Center, National Taiwan University, Taipei, Taiwan" |
| ISSN/ISBN: | 1365-3040 (Electronic) 0140-7791 (Linking) |
| Abstract: | "Sweet potato (Ipomoea batatas) is an important tuber crop, but also target of numerous insect pests. Intriguingly, the abundant storage protein in tubers, sporamin, has intrinsic trypsin protease inhibitory activity. In leaves, sporamin is induced by wounding or a volatile homoterpene and enhances insect resistance. While the signalling pathway leading to sporamin synthesis is partially established, the initial event, perception of a stress-related signal is still unknown. Here, we identified an IbLRR-RK1 that is induced upon wounding and herbivory, and related to peptide-elicitor receptors (PEPRs) from tomato and Arabidopsis. We also identified a gene encoding a precursor protein comprising a peptide ligand (IbPep1) for IbLRR-RK1. IbPep1 represents a distinct signal in sweet potato, which might work in a complementary and/or parallel pathway to the previously described hydroxyproline-rich systemin (HypSys) peptides to strengthen insect resistance. Notably, an interfamily compatibility in the Pep/PEPR system from Convolvulaceae and Solanaceae was identified" |
| Keywords: | "*Ipomoea batatas/genetics/metabolism Ligands Plant Proteins/metabolism Gene Expression Regulation, Plant Peptides/metabolism Dmnt Lrr-rlk herbivory plant defense plant elicitor peptide receptor;" |
| Notes: | "MedlineLu, Hsueh-Han Meents, Anja K Fliegmann, Judith Hwang, Ming-Jing Suen, Ching-Shu Masch, Diana Felix, Georg Mithofer, Axel Yeh, Kai-Wun eng Research Support, Non-U.S. Gov't 2023/06/02 Plant Cell Environ. 2023 Aug; 46(8):2558-2574. doi: 10.1111/pce.14633. Epub 2023 Jun 2" |
