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Título: | Rapid specialization of counter defenses enables two-spotted spider mite to adapt to novel plant hosts |
Autor: | Salehipourshirazi, Golnaz; Bruinsma, Kristie; Ratlamwala, Huzefa; Dixit, Sameer; Arbona, Vicent; Widemann, Emilie; Milojevic, Maja; Jin, Pengyu; Bensoussan, Nicolas; Gómez-Cadenas, Aurelio; Zhurov, Vladimir; Grbić, Miodrag; Grbić, Vojislava CSIC ORCID | Fecha de publicación: | dic-2021 | Editor: | American Society of Plant Biologists | Citación: | Plant Physiology 187(4): 2608- 2622 (2021) | Resumen: | Genetic adaptation, occurring over a long evolutionary time, enables host-specialized herbivores to develop novel resistance traits and to efficiently counteract the defenses of a narrow range of host plants. In contrast, physiological acclimation, leading to the suppression and/or detoxification of host defenses, is hypothesized to enable broad generalists to shift between plant hosts. However, the host adaptation mechanisms used by generalists composed of host-adapted populations are not known. Two-spotted spider mite (TSSM; Tetranychus urticae) is an extreme generalist herbivore whose individual populations perform well only on a subset of potential hosts. We combined experimental evolution, Arabidopsis thaliana genetics, mite reverse genetics, and pharmacological approaches to examine mite host adaptation upon the shift of a bean (Phaseolus vulgaris)-adapted population to Arabidopsis. We showed that cytochrome P450 monooxygenases are required for mite adaptation to Arabidopsis. We identified activities of two tiers of P450s: general xenobiotic-responsive P450s that have a limited contribution to mite adaptation to Arabidopsis and adaptation-associated P450s that efficiently counteract Arabidopsis defenses. In approximately 25 generations of mite selection on Arabidopsis plants, mites evolved highly efficient detoxification-based adaptation, characteristic of specialist herbivores. This demonstrates that specialization to plant resistance traits can occur within the ecological timescale, enabling the TSSM to shift to novel plant hosts. | Versión del editor: | http://dx.doi.org/10.1093/plphys/kiab412 | URI: | http://hdl.handle.net/10261/262611 | DOI: | 10.1093/plphys/kiab412 | Identificadores: | doi: 10.1093/plphys/kiab412 e-issn: 1532-2548 issn: 0032-0889 |
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