دورية أكاديمية
Evidence that a herbivore tolerance response affects selection on floral traits and inflorescence architecture in purple loosestrife (Lythrum salicaria).
| العنوان: | Evidence that a herbivore tolerance response affects selection on floral traits and inflorescence architecture in purple loosestrife (Lythrum salicaria). |
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| المؤلفون: | Thomsen CJM; Department of Biology, University of Ottawa, 30 Marie Curie, Ottawa, Ontario, K1N 6N5, Canada., Sargent RD; Department of Biology, University of Ottawa, 30 Marie Curie, Ottawa, Ontario, K1N 6N5, Canada. |
| المصدر: | Annals of botany [Ann Bot] 2017 Jun 01; Vol. 119 (8), pp. 1295-1303. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Oxford University Press Country of Publication: England NLM ID: 0372347 Publication Model: Print Cited Medium: Internet ISSN: 1095-8290 (Electronic) Linking ISSN: 03057364 NLM ISO Abbreviation: Ann Bot Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: 2002- : Oxford, UK : Oxford University Press Original Publication: Oxford [etc.] |
| مواضيع طبية MeSH: | Herbivory* , Selection, Genetic*, Flowers/*anatomy & histology , Inflorescence/*anatomy & histology , Lythrum/*genetics, Lythrum/anatomy & histology ; Pollination |
| مستخلص: | Background and Aims: The study of the evolution of floral traits has generally focused on pollination as the primary driver of selection. However, herbivores can also impose selection on floral traits through a variety of mechanisms, including florivory and parasitism. Less well understood is whether floral and inflorescence architecture traits that influence a plant's tolerance to herbivory, such as compensatory regrowth, alter pollinator-mediated selection. Methods: Because herbivore damage to Lythrum salicaria meristems typically leads to an increase in the number of inflorescences and the size of the floral display, an experiment was conducted to test whether simulated herbivory (i.e. clipping the developing meristem) could alter the magnitude or direction of pollinator-mediated selection on a suite of floral and inflorescence architecture traits. Using a pollen supplementation protocol, pollen limitation was compared in the presence and absence of meristem damage in order to quantify any interaction between pollinator and herbivore-mediated selection on floral traits. Key Results: Surprisingly, in spite of an obvious impact on floral display and architecture, with clipped plants producing more inflorescences and more flowers, there was no difference in pollen limitation between clipped and unclipped plants. Correspondingly, there was no evidence that imposing herbivore damage altered pollinator-mediated selection in this system. Rather, the herbivory treatment alone was found to alter direct selection on floral display, with clipped plants experiencing greater selection for earlier flowering and weaker selection for number of inflorescences when compared with unclipped plants. Conclusions: These findings imply that herbivory on its own can drive selection on plant floral traits and inflorescence architecture in this species, even more so than pollinators. Specifically, herbivory can impose selection on floral traits if such traits influence a plant's tolerance to herbivory, such as through the timing of flowering and/or the compensatory regrowth response. (© The Author 2017. Published by Oxford University Press on behalf of the Annals of Botany Company. All rights reserved. For Permissions, please email: journals.permissions@oup.com) |
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| فهرسة مساهمة: | Keywords: Flowering phenology; compensatory regrowth; floral display; herbivory; plant defence; pollen limitation; pollination; selection experiment |
| تواريخ الأحداث: | Date Created: 20170404 Date Completed: 20171220 Latest Revision: 20181202 |
| رمز التحديث: | 20240628 |
| مُعرف محوري في PubMed: | PMC5604591 |
| DOI: | 10.1093/aob/mcx026 |
| PMID: | 28369263 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1095-8290 |
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| DOI: | 10.1093/aob/mcx026 |