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Short-term responses of spider mites inform mechanisms of maize resistance to a generalist herbivore.
Gill, Gunbharpur S; Lu, Hsuan B; Bui, Huyen; Clark, Richard M; Ramirez, Ricardo A.
Afiliación
  • Gill GS; Department of Biology, Utah State University, Logan, UT, 84322, USA.
  • Lu HB; Department of Kinesiology and Health Science, Utah State University, Logan, UT, 84322, USA.
  • Bui H; R&D Genetic, ARUP Laboratories, Salt Lake City, UT, 84108, USA.
  • Clark RM; School of Biological Sciences, University of Utah, Salt Lake City, UT, 84112, USA.
  • Ramirez RA; Henry Eyring Center for Cell and Genome Science, University of Utah, Salt Lake City, UT, 84112, USA.
Sci Rep ; 14(1): 19607, 2024 08 23.
Article en En | MEDLINE | ID: mdl-39179737
ABSTRACT
Plants are attacked by diverse herbivorous pests with different host specializations. While host plant resistance influences pest pressure, how resistance impacts the behaviors of generalist and specialist herbivores, and the relationship to resistance, is less well known. Here, we investigated the short-term (< 1 h) behavioral changes of a generalist herbivore, the two-spotted spider mite (TSM), and a specialist herbivore, the Banks grass mite (BGM), after introduction to no-choice Tanglefoot leaf-arenas (2 × 2 cm) of three maize inbred lines (B73, B75, and B96). The widely-used inbred line B73 is susceptible to spider mites, while B75 and B96 are known to be mite resistant, especially to TSM. Video tracking was used to record TSM and BGM walking, probing, feeding, resting, web-building and travel distance on arenas of each line. Mite oviposition was also recorded after 72 h. B75, a resistant line, decreased the feeding behavior (i.e., time) of both mite species compared to B73 (susceptible control) and B96. Moreover, TSM appeared to be sensitive to both resistant lines (B75 and B96) with reduced oviposition, and increased resting and web-building times compared to susceptible B73. In contrast, the specialist BGM showed no difference in oviposition, resting and web-building time across all maize inbred lines. Our findings of quite broad and short-term responses of TSM to B75 and B96 are consistent with a role for constitutive or rapidly induced plant defenses in maize in conferring TSM resistance. Other mechanisms of plant resistance may be needed, however, for defense against specialists like BGM.
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Texto completo: 1 Base de datos: MEDLINE Asunto principal: Zea mays / Tetranychidae / Herbivoria Idioma: En Revista: Sci Rep Año: 2024 Tipo del documento: Article

Texto completo: 1 Base de datos: MEDLINE Asunto principal: Zea mays / Tetranychidae / Herbivoria Idioma: En Revista: Sci Rep Año: 2024 Tipo del documento: Article