| Title: | Intraspecific variation for host immune activation by the spider mite Tetranychus evansi |
| Author(s): | Teodoro-Paulo J; Alba JM; Charlesworth S; Kant MR; Magalhaes S; Duncan AB; |
| Address: | "cE3c-Centre for Ecology, Evolution and Environmental Changes & CHANGE-Global Change and Sustainability Institute, Faculty of Sciences, University of Lisbon, Lisbon, Portugal. Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands. Institut des Sciences de l'Evolution, University of Montpellier, CNRS, IRD, Montpellier, France" |
| ISSN/ISBN: | 2054-5703 (Print) 2054-5703 (Electronic) 2054-5703 (Linking) |
| Abstract: | "Many parasites can interfere with their host's defences to maximize their fitness. Here, we investigated if there is heritable variation in the spider mite Tetranychus evansi for traits associated with how they interact with their host plant. We also determined if this variation correlates with mite fecundity. Tetranychus evansi can interfere with jasmonate (JA) defences which are the main determinant of anti-herbivore immunity in plants. We investigated (i) variation in fecundity in the presence and absence of JA defences, making use of a wild-type tomato cultivar and a JA-deficient mutant (defenseless-1), and (ii) variation in the induction of JA defences, in four T. evansi field populations and 59 inbred lines created from an outbred population originating from controlled crosses of the four field populations. We observed a strong positive genetic correlation between fecundity in the presence (on wild-type) and the absence of JA defences (on defenseless-1). However, fecundity did not correlate with the magnitude of induced JA defences in wild-type plants. Our results suggest that the performance of the specialist T. evansi is not related to their ability to manipulate plant defences, either because all lines can adequately reduce levels of defences, or because they are resistant to them" |
| Keywords: | defence suppression host-parasite interactions inbred lines plant-herbivore interactions; |
| Notes: | "PubMed-not-MEDLINETeodoro-Paulo, Jessica Alba, Juan M Charlesworth, Steven Kant, Merijn R Magalhaes, Sara Duncan, Alison B eng England 2023/06/16 R Soc Open Sci. 2023 Jun 14; 10(6):230525. doi: 10.1098/rsos.230525. eCollection 2023 Jun" |
