Cited by 126Nematode management and characterization studiesInsect-Plant Interactions and ControlHelminth infection and control

Phytoecdysteroids: A novel defense against plant-parasitic nematodes

Soriano, Imelda R., Riley, Ian T., Potter, Mark J., Bowers, William S.·2004·Journal of Chemical Ecology

Abstract

The phytoecdysteroid, 20-hydroxyecdysone (20E), is a major molting hormone of invertebrates, possibly including nematodes. As 20E is inducible in spinach, the defensive role against plant-parasitic nematodes was investigated. The effects of direct application on nematodes was assessed by treating cereal cyst nematode, Heterodera avenae, juveniles with concentrations of 20E from 8.2 x 10(-8) to 5.2 x 10(-5) M before applying to Triticum aestivum growing in sand. H. avenae, Heterodera schachtii (sugarbeet cyst nematode), Meloidogyne javanica (root-knot nematode), and Pratylenchus neglectus (root lesion nematode) were treated with 5.2 x 10(-5) 20E and incubated in moist sand. To test the protective effects of 20E in plants, the latter three nematodes were applied to Spinacia oleracea in which elevated concentrations of 20E had been induced by methyl jasmonate. Abnormal molting, immobility, reduced invasion, impaired development, and death occurred in nematodes exposed to 20E either directly at concentration above 4.2 x 10(-7) M or in plants. Phytoecdysteroid was found to protect spinach from plant-parasitic nematodes and may confer a mechanism for nematode resistance.

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Crossref · 10.1023/b:joec.0000045584.56515.11

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56 of 56 references verified0 citation errors · 0 not checkable

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  • Phytoecdysteroids may act as feeding deterrents and/or endocrine disruptors for insects and soil nematodes.

    “Phytoecdysteroids may act as feeding deterrents [56,57] and/or endocrine disruptors for insects [58][59][60][61][62][63][64][65][66] and soil nematodes [67].”

    From Ecdysteroids (2021) · cites this paper as [67]

  • Phytoecdysteroids protect spinach from plant-parasitic nematodes and may confer a mechanism for nematode resistance.

    “Phytoecdysteroids were found to protect spinach from plant-parasitic nematodes and may confer a mechanism for nematode resistance [7].”
  • In insects, ecdysteroids are involved in molting; in plants there is evidence they are involved in defense response to insect herbivory.

    “In insects, ecdysteroids are involved in the molting process (ecdysis), while in plants there is evidence that they are involved in the plant defense response to insect herbivory [7].”
  • PEs enhance abnormal molting in several arthropods, having a lethal effect, and reduce mechanical damage, wounding, and insect herbivory.

    “PEs enhance abnormal molting in several arthropods, having a lethal effect. Further, they reduce mechanical damage, wounding, and insect herbivory.”
  • PEs alone or in combination with other potent signaling molecules deter plant consumption (antifeedants), disrupt invertebrates' endocrine system, or cause death in phytophagous insects.

    “PEs alone or in combination with other potent signaling molecules deter plant consumption (antifeedants), disrupt invertebrates’ endocrine system, or cause death in phytophagous insects.”

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Authors
Soriano, I. R., Riley, I. T., Potter, M. J., & Bowers, W. S.
Affiliations
  • The University of Adelaide (AU)
  • University of Arizona (US)
Corresponding author
Soriano, Imelda R.
Venue
Journal of Chemical Ecology
Published
2004-10
Volume
30
Issue
10
Pages
1885-1899
ISSN
  • 0098-0331 (ISSN-L)
  • 1573-1561
OpenAlex
W1999746870
Cited by
126
References
58
Citations by year
2026: 2 · 2025: 2 · 2024: 5 · 2023: 3 · 2022: 10 · 2021: 8 · 2020: 5 · 2019: 3 · 2018: 5 · 2017: 8 · 2016: 7 · 2015: 3 · 2014: 6 · 2013: 10 · 2012: 4
FWCI
3.52
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Chemical Ecology (publishedVersion)
  • PubMed (publishedVersion)
  • Adelaide Research & Scholarship (AR&S) (University of Adelaide) (submittedVersion)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Nematode management and characterization studies
  • Life Sciences › Agricultural and Biological Sciences › Insect Science › Insect-Plant Interactions and Control
  • Health Sciences › Veterinary › Small Animals › Helminth infection and control
Keywords
phytoecdysteroids, 20-hydroxyecdysone, plant-parasitic nematodes, cyst nematodes, Heterodera avenae, Heterodera schachtii, Meloidogyne javanica, Pratylenchus neglectus, spinach, methyl jasmonate, ecdysone, nematode resistance
MeSH terms
Animals, Antigens, Helminth, Ecdysterone, Nematoda, Plant Diseases, Tylenchoidea, Triticum, Plant Roots, Spinacia oleracea

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