Identification of a damage-associated molecular pattern (DAMP) receptor and its cognate peptide ligand in sweet potato (Ipomoea batatas).

Autor: Lu HH; Institute of Plant Biology, National Taiwan University, Taipei, Taiwan., Meents AK; Research Group Plant Defense Physiology, Max Planck Institute for Chemical Ecology, Jena, Germany., Fliegmann J; Center for Plant Molecular Biology (ZMBP), University of Tübingen, Tübingen, Germany., Hwang MJ; Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan., Suen CS; Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan., Masch D; Research Group Plant Defense Physiology, Max Planck Institute for Chemical Ecology, Jena, Germany., Felix G; Center for Plant Molecular Biology (ZMBP), University of Tübingen, Tübingen, Germany., Mithöfer A; Research Group Plant Defense Physiology, Max Planck Institute for Chemical Ecology, Jena, Germany., Yeh KW; Institute of Plant Biology, National Taiwan University, Taipei, Taiwan.; The Weather Climate and Disaster Research Center, National Taiwan University, Taipei, Taiwan.
Jazyk: angličtina
Zdroj: Plant, cell & environment [Plant Cell Environ] 2023 Aug; Vol. 46 (8), pp. 2558-2574. Date of Electronic Publication: 2023 Jun 02.
DOI: 10.1111/pce.14633
Abstrakt: 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.
(© 2023 The Authors. Plant, Cell & Environment published by John Wiley & Sons Ltd.)
Databáze: MEDLINE
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