Plant-herbivore interactions: A case of an extreme generalist, the two-spotted spider mite tetranychus urticae

  1. Rioja, C. 2
  2. Zhurov, V. 1
  3. Bruinsma, K. 1
  4. Grbic, M. 13
  5. Grbic, V. 1
  1. 1 University of Western Ontario
    info

    University of Western Ontario

    London, Canadá

    ROR https://ror.org/02grkyz14

  2. 2 University of Copenhagen
    info

    University of Copenhagen

    Copenhague, Dinamarca

    ROR https://ror.org/035b05819

  3. 3 Universidad de La Rioja
    info

    Universidad de La Rioja

    Logroño, España

    ROR https://ror.org/0553yr311

Revista:
Molecular Plant-Microbe Interactions

ISSN: 0894-0282

Año de publicación: 2017

Volumen: 30

Número: 12

Páginas: 935-945

Tipo: Artículo

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DOI: 10.1094/MPMI-07-17-0168-CR SCOPUS: 2-s2.0-85034017061 WoS: WOS:000414947000001 GOOGLE SCHOLAR

Otras publicaciones en: Molecular Plant-Microbe Interactions

Repositorio institucional: lock_openAcceso abierto Editor

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Resumen

Plant-herbivore interactions evolved over long periods of time, resulting in an elaborate arms race between interacting species. While specialist herbivores evolved specific strategies to cope with the defenses of a limited number of hosts, our understanding of how generalist herbivores deal with the defenses of a plethora of diverse host plants is largely unknown. Understanding the interaction between a plant host and a generalist herbivore requires an understanding of the plant's mechanisms aimed at defending itself and the herbivore's mechanisms intended to counteract diverse defenses. In this review, we use the two-spotted spider mite (TSSM), Tetranychus urticae (Koch) as an example of a generalist herbivore, as this chelicerate pest has a staggering number of plant hosts.We first establish that the ability of TSSM to adapt to marginal hosts underlies its polyphagy and agricultural pest status. We then highlight our understanding of direct plant defenses against spider mite herbivory and review recent advances in uncovering mechanisms of spider mite adaptations to them. Finally, we discuss the adaptation process itself, as it allows TSSM to overcome initially effective plant defenses. A highquality genome sequence and developing genetic tools, coupled with an ease of mite experimental selection to new hosts, make TSSM an outstanding systemto study the evolution of host range, mechanisms of pest xenobiotic resistance and plant-herbivore interactions. In addition, knowledge of plant defense mechanisms that affect mite fitness are of practical importance, as it can lead to development of new control strategies against this important agricultural pest. In parallel, understanding mechanisms of mite counter adaptations to these defenses is required to maintain the efficacy of these control strategies in agricultural practices. © 2017 The American Phytopathological Society.