2026-04-17T12:21:49Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/101052025-01-31T01:05:38Zcom_10259_4313com_10259_5086com_10259_2604col_10259_4314

00925njm 22002777a 4500 dc Santamaría Fernández, Mª Estrella author Martínez, Manuel author Arnáiz Alonso, Ana author Ortego, Félix author Grbic, Vojislava author Diaz, Isabel author 2017 The defense response of the plants against herbivores relies on a complex network of interconnected signaling pathways. In this work, we characterized a new key player in the response of Arabidopsis against the two-spotted spider mite Tetranychus urticae, the MATI (Mite Attack Triggered Immunity) gene. This gene was differentially induced in resistant Bla-2 strain relative to susceptible Kon Arabidopsis accessions after mite attack, suggesting a potential role in the control of spider mites. To study the MATI gene function, it has been performed a deep molecular characterization of the gene combined with feeding bioassays using modified Arabidopsis lines and phytophagous arthropods. The MATI gene belongs to a new gene family that had not been previously characterized. Biotic assays showed that it confers a high tolerance not only to T. urticae, but also to the chewing lepidopteran Spodoptera exigua. Biochemical analyses suggest that MATI encodes a protein involved in the accumulation of reducing agents upon herbivore attack to control plant redox homeostasis avoiding oxidative damage and cell death. Besides, molecular analyses demonstrated that MATI is involved in the modulation of different hormonal signaling pathways, affecting the expression of genes involved in biosynthesis and signaling of the jasmonic acid and salicylic acid hormones. The fact that MATI is also involved in defense through the modulation of the levels of photosynthetic pigments highlights the potential of MATI proteins to be exploited as biotechnological tools for pest control. http://hdl.handle.net/10259/10105 10.3389/fpls.2017.00975 1664-462X Plant–herbivore interaction Tetranychus urticae Arabidopsis thaliana Spodoptera exigua Hormonal signaling pathways Plant redox status MATI, a Novel Protein Involved in the Regulation of Herbivore-Associated Signaling Pathways