Herbivory and Attenuated UV Radiation Affect Volatile Emissions of the Invasive Weed Calluna vulgaris

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dc.citation.issue14
dc.citation.volume25
dc.contributor.authorEffah E
dc.contributor.authorBarrett DP
dc.contributor.authorPeterson PG
dc.contributor.authorWargent JJ
dc.contributor.authorPotter MA
dc.contributor.authorHolopainen JK
dc.contributor.authorClavijo McCormick A
dc.date.available2020-07
dc.date.available2020-07-08
dc.date.issued13/07/2020
dc.description.abstractCalluna vulgaris (heather) is an aggressive invasive weed on the Central Plateau, North Is., New Zealand (NZ), where it encounters different environmental factors compared to its native range in Europe, such as high ultraviolet radiation (UV) and a lack of specialist herbivores. The specialist herbivore Lochmaea suturalis (heather beetle) was introduced from the United Kingdom (UK) in 1996 as a biocontrol agent to manage this invasive weed. Like other plant invaders, a novel environment may be challenging for heather as it adjusts to its new conditions. This process of "adjustment" involves morphological and physiological changes often linked to phenotypic plasticity. The biochemical responses of exotic plants to environmental variables in their invaded range is poorly understood. The production and release of volatile organic compounds (VOCs) is essential to plant communication and highly susceptible to environmental change. This study therefore aimed to explore the VOC emissions of heather in response to different levels of UV exposure, and to feeding damage by L. suturalis. Using tunnel houses clad with UV-selective filters, we measured VOCs produced by heather under NZ ambient, 20% attenuated, and 95% attenuated solar UV treatments. We also compared VOC emissions in the field at adjacent sites where L. suturalis was present or absent. Volatiles produced by the same target heather plants were measured at four different times in the spring and summer of 2018-2019, reflecting variations in beetle's abundance, feeding stage and plant phenology. Heather plants under 95% attenuated UV produced significantly higher amounts of (E)-β-farnesene, decanal, benzaldehyde, and benzeneacetaldehyde compared to 25% attenuated and ambient UV radiation. We also found significant differences in volatiles produced by heather plants in beetle-present versus beetle-absent sites on most sampling occasions. We also recorded a lower number of generalist herbivores on heather at sites where L. suturalis was present. Interactions between invasive plants, a novel environment, and the native communities they invade, are discussed.
dc.description.publication-statusPublished
dc.identifierhttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000554183800001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=c5bb3b2499afac691c2e3c1a83ef6fef
dc.identifierARTN 3200
dc.identifier.citationMOLECULES, 2020, 25 (14)
dc.identifier.doi10.3390/molecules25143200
dc.identifier.eissn1420-3049
dc.identifier.elements-id433602
dc.identifier.harvestedMassey_Dark
dc.identifier.urihttps://hdl.handle.net/10179/15640
dc.publisherMDPI (Basel, Switzerland)
dc.relation.isPartOfMOLECULES
dc.subjectvolatile organic compounds
dc.subjectplant volatiles
dc.subjectplant secondary metabolites
dc.subjectplant ecophysiology
dc.subjectultraviolet radiation
dc.subjectbiocontrol agents
dc.subjectheather beetle
dc.subject.anzsrc0304 Medicinal and Biomolecular Chemistry
dc.subject.anzsrc0305 Organic Chemistry
dc.subject.anzsrc0307 Theoretical and Computational Chemistry
dc.titleHerbivory and Attenuated UV Radiation Affect Volatile Emissions of the Invasive Weed Calluna vulgaris
dc.typeJournal article
pubs.notesNot known
pubs.organisational-group/Massey University
pubs.organisational-group/Massey University/College of Sciences
pubs.organisational-group/Massey University/College of Sciences/School of Agriculture & Environment
pubs.organisational-group/Massey University/College of Sciences/School of Natural Sciences
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