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Comparative analysis of phenolic profiles of ovipositional fluid of Rhinusa pilosa (Mecinini, Curculionidae) and its host plant Linaria vulgaris (Plantaginaceae)

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2016
Authors
Sedlarević, Ana
Morina, Filis
Toševski, Ivo
Gašić, Uroš
Natić, Maja
Jović, Jelena
Krstić, Oliver
Veljović-Jovanović, Sonja
Article (Published version)
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Abstract
Rhinusa pilosa (Gyllenhal) is a highly specific weevil that induces stem galls on the common toadflax Linaria vulgaris Mill. females oviposit the eggs near the apex of a growing shoot. The act of oviposition is accompanied by secretion of an ovipositional fluid, which is considered to be cecidogen, directly involved in gall induction. The remains of cecidogenic fluid were collected from the surface of the oviposition point on the stem. We performed a comparative analysis of the phenolics extracted from cecidogen, the stem and galls of L. vulgaris and adult and larva of R. pilosa by HPLC-DAD. One compound with A (max) at 273, 332 nm (R (t) 30.65 min) was exclusively found in the methanol extract of cecidogen. To further characterize the cecidogen and stem phenolic profiles, we used UHPLC coupled with an OrbiTrap mass analyzer. Among 49 phenolic compounds extracted from both the ovipositional fluid and the plant, protocatechuic acid and two phenolic glycosides were exclusively found in c...ecidogen: diosmetin-O-acetylrutinoside and an unidentified compound. The unknown compound produced an MS2 base peak at 387 and 327 and 267 m/z base peaks at MS3 and MS4 fragmentation, respectively, and had the molecular formula C32H31O18. The plausible role of phenolic compounds in the induction of gall formation on L. vulgaris is discussed.

Keywords:
Cecidogen / Gall / Linaria vulgaris / Rhinusa pilosa / Ovipositional fluid / Phenolics
Source:
Arthropod-Plant Interactions, 2016, 10, 4, 311-322
Publisher:
  • Springer, Dordrecht
Projects:
  • Agrobiodiversity and land-use change in Serbia: an integrated biodiversity assessment of key functional groups of arthropods and plant pathogens (RS-43001)
  • Modulation of antioxidative metabolism in plants for improvement of plant abiotic stress tolerance and identification of new biomarkers for application in remediation and monitoring of degraded biotopes (RS-43010)
  • Structure-properties relationships of natural and synthetic molecules and their metal complexes (RS-172017)

DOI: 10.1007/s11829-016-9435-y

ISSN: 1872-8855

WoS: 000379978500005

Scopus: 2-s2.0-84969849746
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URI
http://plantarum.izbis.bg.ac.rs/handle/123456789/443
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