What makes a volatile organic compound a reliable indicator of insect herbivory?

Autor: Marcel Dicke, Sybille B. Unsicker, Jacob C. Douma, G. Andreas Boeckler, Laurens Ganzeveld
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Meteorologie en Luchtkwaliteit
0106 biological sciences
Canopy
herbivore induced plant volatile (HIPV)
Insecta
Meteorology and Air Quality
010504 meteorology & atmospheric sciences
Physiology
oxidation
media_common.quotation_subject
Plant Science
Insect
01 natural sciences
Models
Biological
emission
Animals
Volatile organic compound
Herbivory
Laboratory of Entomology
0105 earth and related environmental sciences
media_common
chemistry.chemical_classification
Herbivore
Volatile Organic Compounds
WIMEK
hydroxyl radical
Chemistry
Ecology
Information value
Host (biology)
fungi
Original Articles
15. Life on land
PE&RC
Laboratorium voor Entomologie
Plant Leaves
biogenic volatile organic compound (BVOC)
ozone
Populus
Ecological significance
nitrate radical
Original Article
EPS
Crop and Weed Ecology
Populus nigra
010606 plant biology & botany
Zdroj: Plant Cell and Environment 42 (2019) 12
Plant, Cell & Environment
Plant, Cell and Environment
Plant Cell and Environment, 42(12), 3308-3325
ISSN: 0140-7791
Popis: Plants that are subject to insect herbivory emit a blend of so‐called herbivore‐induced plant volatiles (HIPVs), of which only a few serve as cues for the carnivorous enemies to locate their host. We lack understanding which HIPVs are reliable indicators of insect herbivory. Here, we take a modelling approach to elucidate which physicochemical and physiological properties contribute to the information value of a HIPV. A leaf‐level HIPV synthesis and emission model is developed and parameterized to poplar. Next, HIPV concentrations within the canopy are inferred as a function of dispersion, transport and chemical degradation of the compounds. We show that the ability of HIPVs to reveal herbivory varies from almost perfect to no better than chance and interacts with canopy conditions. Model predictions matched well with leaf‐emission measurements and field and laboratory assays. The chemical class a compound belongs to predicted the signalling ability of a compound only to a minor extent, whereas compound characteristics such as its reaction rate with atmospheric oxidants, biosynthesis rate upon herbivory and volatility were much more important predictors. This study shows the power of merging fields of plant–insect interactions and atmospheric chemistry research to increase our understanding of the ecological significance of HIPVs.
Plants communicate with other organisms through volatile organic compounds. Deciphering this language is important for our knowledge on plant communication. We show that the ability of a compound to serve as cue for insect herbivory is affected by its physicochemical and physiological properties.
Databáze: OpenAIRE
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