| Title: | Tetranins: new putative spider mite elicitors of host plant defense |
| Author(s): | Iida J; Desaki Y; Hata K; Uemura T; Yasuno A; Islam M; Maffei ME; Ozawa R; Nakajima T; Galis I; Arimura GI; |
| Address: | "Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, Tokyo, 125-8585, Japan. Department of Life Sciences and Systems Biology, Plant Physiology-Innovation Centre, University of Turin, Via Quarello15/A, I-10135, Turin, Italy. Center for Ecological Research, Kyoto University, Otsu, 520-2113, Japan. Institute of Plant Science and Resources (IPSR), Okayama University, 2-20-1 Chuo, Kurashiki, 710-0046, Japan" |
| ISSN/ISBN: | 1469-8137 (Electronic) 0028-646X (Linking) |
| Abstract: | "The two-spotted spider mite (Tetranychus urticae) is a plant-sucking arthropod herbivore that feeds on a wide array of cultivated plants. In contrast to the well-characterized classical chewing herbivore salivary elicitors that promote plant defense responses, little is known about sucking herbivores' elicitors. To characterize the sucking herbivore elicitors, we explored putative salivary gland proteins of spider mites by using an Agrobacterium-mediated transient expression system or protein infiltration in damaged bean leaves. Two candidate elicitors (designated as tetranin1 (Tet1) and tetranin2 (Tet2)) triggered early leaf responses (cytosolic calcium influx and membrane depolarization) and increased the transcript abundances of defense genes in the leaves, eventually resulting in reduced survivability of T. urticae on the host leaves as well as induction of indirect plant defenses by attracting predatory mites. Tet1 and/or Tet2 also induced jasmonate, salicylate and abscisic acid biosynthesis. Notably, Tet2-induced signaling cascades were also activated via the generation of reactive oxygen species. The signaling cascades of these two structurally dissimilar elicitors are mostly overlapping but partially distinct and thus they would coordinate the direct and indirect defense responses in host plants under spider mite attack in both shared and distinct manners" |
| Keywords: | "Agrobacterium tumefaciens Animals Calcium Databases, Genetic Female Gene Expression Regulation Phaseolus/immunology/*parasitology Plant Diseases/immunology/*parasitology Plant Leaves/immunology/parasitology Reactive Oxygen Species Solanum melongena/immuno;" |
| Notes: | "MedlineIida, Junya Desaki, Yoshitake Hata, Kumiko Uemura, Takuya Yasuno, Ayano Islam, Monirul Maffei, Massimo E Ozawa, Rika Nakajima, Tadaaki Galis, Ivan Arimura, Gen-Ichiro eng Research Support, Non-U.S. Gov't England 2019/03/25 New Phytol. 2019 Oct; 224(2):875-885. doi: 10.1111/nph.15813. Epub 2019 Apr 19" |
