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Fighting on two fronts: Elevated insect resistance in flooded maize.

Publication ,  Journal Article
Block, AK; Hunter, CT; Sattler, SE; Rering, C; McDonald, S; Basset, GJ; Christensen, SA
Published in: Plant, cell & environment
January 2020

To grow and thrive plants must be able to adapt to both adverse environmental conditions and attack by a variety of pests. Elucidating the sophisticated mechanisms plants have developed to achieve this has been the focus of many studies. What is less well understood is how plants respond when faced with multiple stressors simultaneously. In this study, we assess the response of Zea mays (maize) to the combinatorial stress of flooding and infestation with the insect pest Spodoptera frugiperda (fall armyworm). This combined stress leads to elevated production of the defence hormone salicylic acid, which does not occur in the individual stresses, and the resultant salicylic acid-dependent increase in S. frugiperda resistance. Remodelling of phenylpropanoid pathways also occurs in response to this combinatorial stress leading to increased production of the anti-insect C-glycosyl flavones (maysins) and the herbivore-induced volatile phenolics, benzyl acetate, and phenethyl acetate. Furthermore, changes in cellular redox status also occur, as indicated by reductions in peroxidase and polyphenol oxidase activity. These data suggest that metabolite changes important for flooding tolerance and anti-insect defence may act both additively and synergistically to provide extra protection to the plant.

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Published In

Plant, cell & environment

DOI

EISSN

1365-3040

ISSN

0140-7791

Publication Date

January 2020

Volume

43

Issue

1

Start / End Page

223 / 234

Related Subject Headings

  • Zea mays
  • Spodoptera
  • Salicylic Acid
  • Plant Diseases
  • Plant Biology & Botany
  • Peroxidase
  • Larva
  • Insecta
  • Herbivory
  • Gene Expression Regulation, Plant
 

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Block, A. K., Hunter, C. T., Sattler, S. E., Rering, C., McDonald, S., Basset, G. J., & Christensen, S. A. (2020). Fighting on two fronts: Elevated insect resistance in flooded maize. Plant, Cell & Environment, 43(1), 223–234. https://doi.org/10.1111/pce.13642
Block, Anna K., Charles T. Hunter, Scott E. Sattler, Caitlin Rering, Samantha McDonald, Gilles J. Basset, and Shawn A. Christensen. “Fighting on two fronts: Elevated insect resistance in flooded maize.Plant, Cell & Environment 43, no. 1 (January 2020): 223–34. https://doi.org/10.1111/pce.13642.
Block AK, Hunter CT, Sattler SE, Rering C, McDonald S, Basset GJ, et al. Fighting on two fronts: Elevated insect resistance in flooded maize. Plant, cell & environment. 2020 Jan;43(1):223–34.
Block, Anna K., et al. “Fighting on two fronts: Elevated insect resistance in flooded maize.Plant, Cell & Environment, vol. 43, no. 1, Jan. 2020, pp. 223–34. Epmc, doi:10.1111/pce.13642.
Block AK, Hunter CT, Sattler SE, Rering C, McDonald S, Basset GJ, Christensen SA. Fighting on two fronts: Elevated insect resistance in flooded maize. Plant, cell & environment. 2020 Jan;43(1):223–234.
Journal cover image

Published In

Plant, cell & environment

DOI

EISSN

1365-3040

ISSN

0140-7791

Publication Date

January 2020

Volume

43

Issue

1

Start / End Page

223 / 234

Related Subject Headings

  • Zea mays
  • Spodoptera
  • Salicylic Acid
  • Plant Diseases
  • Plant Biology & Botany
  • Peroxidase
  • Larva
  • Insecta
  • Herbivory
  • Gene Expression Regulation, Plant