Effects of amount and recurrence of leaf herbivory on the induction of direct and indirect defences in wild cotton
| العنوان: | Effects of amount and recurrence of leaf herbivory on the induction of direct and indirect defences in wild cotton |
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| المؤلفون: | Teresa Quijano-Medina, Armando Virgen, Martha Reyes-Hernández, Luis Abdala-Roberts, Xoaquín Moreira, Víctor Parra-Tabla, Julio C. Rojas, Diego F. Angulo, Marta Francisco |
| المصدر: | Plant Biology. 21:1063-1071 |
| بيانات النشر: | Wiley, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | 0106 biological sciences, Plant Nectar, media_common.quotation_subject, Leaf damage, Plant Science, Insect, Spodoptera, 010603 evolutionary biology, 01 natural sciences, Gossypium hirsutum, Nectar production, Phenols, Botany, Animals, Nectar, Herbivory, Caterpillar, Ecology, Evolution, Behavior and Systematics, media_common, Gossypium, Herbivore, biology, fungi, food and beverages, General Medicine, biology.organism_classification, Plant Leaves, Time course, 010606 plant biology & botany |
| الوصف: | The induction of defences in response to herbivory is a key mechanism of plant resistance. While a number of studies have investigated the time course and magnitude of plant induction in response to a single event of herbivory, few have looked at the effects of recurrent herbivory. Furthermore, studies measuring the effects of the total amount and recurrence of herbivory on both direct and indirect plant defences are lacking. To address this gap, here we asked whether insect leaf herbivory induced changes in the amount and concentration of extrafloral nectar (an indirect defence) and concentration of leaf phenolic compounds (a direct defence) in wild cotton (Gossypium hirsutum). We conducted a greenhouse experiment where we tested single event or recurrent herbivory effects on defence induction by applying mechanical leaf damage and caterpillar (Spodoptera frugiperda) regurgitant. Single events of 25% and 50% leaf damage did not significantly influence extrafloral nectar production or concentration. Extrafloral nectar traits did, however, increase significantly relative to controls when plants were exposed to recurrent herbivory (two episodes of 25% damage). In contrast, phenolic compounds increased significantly in response to single events of leaf damage but not to recurrent damage. In addition, we found. that local induction of extrafloral nectar production was stronger than systemic induction, whereas the reverse pattern was observed for phenolics. Together, these results reveal seemingly inverse patterns of induction of direct and indirect defences in response to herbivory in wild cotton. |
| تدمد: | 1438-8677 1435-8603 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::75a6c6fed31037d591a686d630df0ec4 https://doi.org/10.1111/plb.13022 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....75a6c6fed31037d591a686d630df0ec4 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14388677 14358603 |
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