| Title | Synthetic ultrashort cationic lipopeptides induce systemic plant defense responses against bacterial and fungal pathogens. | | Author(s) | Brotman Y, Makovitzki A, Shai Y, Chet I, Viterbo A | | Institution | Department of Plant Pathology and Microbiology, The Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 76100 Israel; and the Department of Biological Chemistry, The Weizmann Institute of Science, Rehovot 76100, Israel. | | Source | Appl Environ Microbiol 2009 Jun 19. | | Abstract | A new family of synthetic membrane active ultrashort lipopeptides, composed of only four amino acids linked to fatty acids, was tested for the ability to induce systemic resistance and defense responses in plants. We found that two peptides wherein the third residue is a D-enantiomer, C16-KKKK and C16-KLLK, can induce medium alkalinization of tobacco suspension-cultured cells and expression of defense related genes in cucumber and Arabidopsis seedlings. Moreover these compounds can prime systemic induction of antimicrobial compounds in cucumber leaves similarly to the plant beneficial fungus Trichoderma asperellum T203, and provide systemic protection against the phytopathogens Botrytis cinerea B05, Pseudomonas syringae pv lachrimans (Psl) and Pseudomonas syringae pv tomato DC3000. Thus, short cationic lipopeptides are a new category of compounds with potentially high utility in the induction of systemic resistance in plants. | | Language | ENG | | Pub Type(s) | JOURNAL ARTICLE
| | PubMed ID | 19542326 |
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