INFLUENCE OF SYNTHETIC HERBIVORY INDUCED PLANT VOLATILES ON MAIZE PLANTS DEFENSE

Authors

  • Izabela Nunes do Nascimento Universidade Federal da Paraíba
  • Maria Carolina Blassioli Moraes EMBRAPA
  • Miguel Borges EMBRAPA
  • Raul Alberto Laumann EMBRAPA
  • Mirian Fernandes Furtado Michereff EMBRAPA
  • Walter Esfrain Pereira Universidade Federal da Paraíba

Keywords:

HIPVS, PLANT DEFENCE, Zea mays, STINK BUGS

Abstract

Herbivore-induced plant volatiles (VPIHs) can be used in different strategies to protect plants against herbivores, such as using synthetic compounds in dispenser to attract natural enemies or inducing plant defence. Therefore, the aim of this study was to evaluate whether synthetically applied VPIHs influence the defence of healthy maize plants. For this purpose, the production of volatile compounds from maize plants (Sintetico Spodoptera genotype) exposed to the following VPIHs: indole, (E)-2-hexenyl acetate, (Z) -3-hexenyl acetate, (RS)-linalool, DMNT and (E)-β-farnesene were evaluated. Healthy maize plants were exposed to these volatiles for 24h. After this, the exposure was stopped and the plants were allowed to rest for one hour. Then the exposed plants were submitted or not to herbivory of virgin females of the stink bug Dichelops melacanthus. Plants that were not exposed to the compounds were also submitted or not to the herbivory of D. melacanthus, as control. The volatiles of the plants submitted to the different treatments were collected by air-entrainment in the periods 0-48, 0-72 and 0-96h after the beginning of herbivory. Aeration extracts containing the volatiles emitted by plants were analysed by CG-FID and CG-MS. Principal component analysis showed that none of the compounds induced the production of volatiles on healthy plant, this treatment grouped with untreated maize plants at all times evaluated. However plants exposed to linalool and indole and to herbivory formed a separate group from herbivory and from the other treatments. The results obtained so far showed that VPIHs applied synthetically alter the volatile production of plants subjected to herbivory stress, which indicates that the priming defence could be been activated. Behavioural bioassays with plants exposed to VPIHs and sequentially to herbivory are being conducted to evaluate whether the observed differences in volatile production are related to plant defence.

Published

2019-10-19

How to Cite

Nascimento, I. N. do, Moraes, M. C. B., Borges, M., Laumann, R. A., Michereff, M. F. F., & Pereira, W. E. (2019). INFLUENCE OF SYNTHETIC HERBIVORY INDUCED PLANT VOLATILES ON MAIZE PLANTS DEFENSE. Caderno Verde De Agroecologia E Desenvolvimento Sustentável, 9(5), b–33. Retrieved from https://gvaa.com.br/revista/index.php/CVADS/article/view/7196

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