Paper · 1994 · Environmental Entomology

Putative Role of Photodimerized Phenolic Acids in Maize Resistance toOstrinia nubilalis(Lepidoptera: Pyralidae)

D. J. Bergvinson; J. T. Arnason; R. I. Hamilton; et al.

7
claims
14
verbatim quotes
27
citations
2
research areas
—
Not open access

Abstract

Five genotypes of maize were grown under three light regimes in the field. Artificial infestation with European corn borer, Ostrinia nubilalis (Hübner), egg masses resulted in greater leaf feeding damage for plants grown under a UV absorbing plastic (UV−) than for the same genotypes grown under UV transmitting (UV+) plastic or in the open. Leaf bioassays performed on tissue from the three different light regimes showed similar trends. Foliar nitrogen content was reduced as much as 15% for UV− plants. 2,4-dihydroxy-7-methoxy-2H-l,4-benzoxazin-3-one levels were consistently higher in UV− plants as were the levels of cell-wall-bound hydroxycinnamic acids (HCA). Light-activated dimers of HCA called truxillic and truxinic acids were lower in UV− plants. These results indicate that cell-wall-bound truxillic and truxinic acids are an additional resistance mechanism that provide an explanation for increased susceptibility of greenhouse grown plants to folivores.

Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 7

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

After artificial infestation with European corn borer egg masses, maize grown under UV-absorbing plastic had greater leaf feeding damage than the same genotypes under UV-transmitting plastic or in the open.

Taxon
MaizeZea mayst0
Treatment
grown under a UV absorbing plastice0
Interactor
European corn borerOstrinia nubilalise0pest
Outcome
leaf feeding damagee0
Direction
greatere0
Comparator
UV transmitting (UV+) plastic or in the opene0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗
Ostrinia nubilalis
Ostrinia nubilalis · Interactor · picture from its Wikimedia Commons categoryKeith Weller · Public domain · Wikimedia Commons ↗

Verbatim

t0

“Maize”

✓ located verbatim in the source · title, characters 50–55 · show in text ↑
e0

“Artificial infestation with European corn borer, Ostrinia nubilalis (Hübner), egg masses resulted in greater leaf feeding damage for plants grown under a UV absorbing plastic (UV−) than for the same genotypes grown under UV transmitting (UV+) plastic or in the open”

✓ located verbatim in the source · abstract, characters 75–340 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Leaf bioassays on tissue from the three light regimes showed trends similar to the field damage results.

Taxon
MaizeZea mayst0
Outcome
Leaf bioassayse0
Qualifier
showed similar trendse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Maize”

✓ located verbatim in the source · title, characters 50–55 · show in text ↑
e0

“Leaf bioassays performed on tissue from the three different light regimes showed similar trends”

✓ located verbatim in the source · abstract, characters 342–437 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Foliar nitrogen content was reduced by as much as 15% in plants under UV-absorbing plastic.

Taxon
MaizeZea mayst0
Treatment
UV−e0
Outcome
Foliar nitrogen contente0
Direction
reducede0
Value
15%e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Maize”

✓ located verbatim in the source · title, characters 50–55 · show in text ↑
e0

“Foliar nitrogen content was reduced as much as 15% for UV− plants”

✓ located verbatim in the source · abstract, characters 439–504 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Levels of 2,4-dihydroxy-7-methoxy-2H-1,4-benzoxazin-3-one were consistently higher in plants under UV-absorbing plastic.

Taxon
MaizeZea mayst0
Treatment
UV−e0
Outcome
2,4-dihydroxy-7-methoxy-2H-l,4-benzoxazin-3-one levelse0
Direction
highere0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Maize”

✓ located verbatim in the source · title, characters 50–55 · show in text ↑
e0

“2,4-dihydroxy-7-methoxy-2H-l,4-benzoxazin-3-one levels were consistently higher in UV− plants”

✓ located verbatim in the source · abstract, characters 506–599 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Levels of cell-wall-bound hydroxycinnamic acids were also higher in plants under UV-absorbing plastic.

Taxon
MaizeZea mayst0
Treatment
UV−e0
Outcome
levels of cell-wall-bound hydroxycinnamic acidse0
Direction
highere0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Maize”

✓ located verbatim in the source · title, characters 50–55 · show in text ↑
e0

“2,4-dihydroxy-7-methoxy-2H-l,4-benzoxazin-3-one levels were consistently higher in UV− plants as were the levels of cell-wall-bound hydroxycinnamic acids (HCA)”

✓ located verbatim in the source · abstract, characters 506–665 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Light-activated HCA dimers (truxillic and truxinic acids) were lower in plants under UV-absorbing plastic.

Taxon
MaizeZea mayst0
Treatment
UV−e0
Outcome
Light-activated dimers of HCA called truxillic and truxinic acidse0
Direction
lowere0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Maize”

✓ located verbatim in the source · title, characters 50–55 · show in text ↑
e0

“Light-activated dimers of HCA called truxillic and truxinic acids were lower in UV− plants”

✓ located verbatim in the source · abstract, characters 667–757 · show in text ↑
Mechanismauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors conclude that cell-wall-bound truxillic and truxinic acids are an additional resistance mechanism explaining increased susceptibility of greenhouse-grown plants to folivores.

Taxon
MaizeZea mayst0
Interactor
folivorese0herbivore
Compound
truxillic and truxinic acidse0
Outcome
increased susceptibility of greenhouse grown plants to folivorese0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Maize”

✓ located verbatim in the source · title, characters 50–55 · show in text ↑
e0

“These results indicate that cell-wall-bound truxillic and truxinic acids are an additional resistance mechanism that provide an explanation for increased susceptibility of greenhouse grown plants to folivores”

✓ located verbatim in the source · abstract, characters 759–967 · show in text ↑

uv · molecular: metabolites · Zea mays (maize)Positive and negative results

4 papers: 1 positive, 3 negative or no effect

2 papers in the same direction as this paper · 1 in the opposite direction

  1. positive
  2. no effect
  3. negative
See all 4 papers →

uv · Ostrinia nubilalis · Zea mays (maize)Results agree

2 papers: 0 positive, 2 negative or no effect

1 paper in the same direction as this paper

  1. negative
See all 2 papers →

uv · nutrient: content · Zea mays (maize)Results agree

2 papers: 0 positive, 2 negative or no effect

1 paper in the same direction as this paper

  1. negative
See all 2 papers →

Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.