Paper · 2018 · Plant Cell & Environment

Ultraviolet‐C priming of strawberry leaves against subsequent Mycosphaerella fragariae infection involves the action of reactive oxygen species, plant hormones, and terpenes

Yanqun Xu; Marie Thérèse Charles; Zisheng Luo; et al.

7
claims
17
verbatim quotes
219
citations
4
research areas
✓
Open access

Abstract

Abstract Ultraviolet‐C (UV‐C) radiation has been reported to induce defence responses to pathogens in growing crops and described as a new environmentally friendly method for disease control. However, whether the effect of the induced defence mechanisms will persist after the stress imposed by UV‐C is alleviated and how these mechanisms interact with pathogen elicitors upon infection have not yet been investigated. Thus, we inoculated strawberry plants with Mycosphaerella fragariae , the causal agent of leaf spot disease, after 5 weeks of repeated UV‐C irradiation treatment (cumulative dose of 10.2 kJ m −2 ) and investigated the alteration of gene expression and biochemical phenotypes. The results revealed that UV‐C treatment had a significant impact on gene expression in strawberry leaves and led to the overexpression of a set of genes involved in plant–pathogen interaction. UV‐C‐treated leaves displayed a stronger response to infection after inoculation, with reduced symptoms and increases in accumulation of total phenolics and volatile terpenes, higher expression of pathogenesis‐related proteins and the activity of several defence enzymes. This study presumptively describe, for the first time, the involvement of terpenes, reactive oxygen species, and abscisic acid, salicylic acid, jasmonic acid, and their transduction factors, in the network underpinning UV‐C priming of growing crops for improved protection against pathogens.

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Claims 7

Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

UV-C significantly altered strawberry leaf gene expression.

Taxon
strawberryFragaria ×ananassae0
Organ / stage
strawberry leavese0
Treatment
UV‐C treatmente0
Outcome
gene expressione0

Not reportedComparatorDirection

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

Fragaria x ananassa
Fragaria ×ananassa · TaxonIvar Leidus · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“UV‐C treatment had a significant impact on gene expression in strawberry leaves”

✓ located verbatim in the source · abstract, characters 721–800 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

UV-C overexpressed plant–pathogen interaction genes.

Taxon
strawberryFragaria ×ananassat0
Treatment
UV‐Ce1
Outcome
overexpression of a set of genese0
Direction
overexpressione0

Not reportedComparator

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

Fragaria x ananassa
Fragaria ×ananassa · TaxonIvar Leidus · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“led to the overexpression of a set of genes involved in plant–pathogen interaction.”

✓ located verbatim in the source · abstract, characters 805–888 · show in text ↑
t0

“strawberry leaves against subsequent Mycosphaerella fragariae infection involves the action of reactive oxygen species, plant hormones, and terpenes”

✓ located verbatim in the source · title, characters 25–173 · show in text ↑
e1

“UV‐C treatment had a significant impact on gene expression in strawberry leaves”

✓ located verbatim in the source · abstract, characters 721–800 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

UV-C leaves had reduced infection symptoms.

Taxon
strawberryFragaria ×ananassat0
Treatment
UV‐C‐treated leavese0
Interactor
Mycosphaerella fragariaeRamularia grevilleanat0pathogen
Outcome
symptomse0
Direction
reducede0

Not reportedComparator

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

Fragaria x ananassa
Fragaria ×ananassa · TaxonIvar Leidus · CC BY-SA 4.0 · Wikimedia Commons ↗
Ramularia grevilleana
Ramularia grevilleana · InteractorMichal Maňas · CC BY 2.5 · Wikimedia Commons ↗

Verbatim

e0

“UV‐C‐treated leaves displayed a stronger response to infection after inoculation, with reduced symptoms”

✓ located verbatim in the source · abstract, characters 889–992 · show in text ↑
t0

“strawberry leaves against subsequent Mycosphaerella fragariae infection involves the action of reactive oxygen species, plant hormones, and terpenes”

✓ located verbatim in the source · title, characters 25–173 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

UV-C leaves accumulated more total phenolics and volatile terpenes after infection.

Taxon
strawberryFragaria ×ananassat0
Treatment
UV‐Ce1
Outcome
accumulation of total phenolics and volatile terpenese0
Direction
increasese0

Not reportedComparator

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

Fragaria x ananassa
Fragaria ×ananassa · TaxonIvar Leidus · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“increases in accumulation of total phenolics and volatile terpenes”

✓ located verbatim in the source · abstract, characters 997–1063 · show in text ↑
t0

“strawberry leaves against subsequent Mycosphaerella fragariae infection involves the action of reactive oxygen species, plant hormones, and terpenes”

✓ located verbatim in the source · title, characters 25–173 · show in text ↑
e1

“UV‐C treatment had a significant impact on gene expression in strawberry leaves”

✓ located verbatim in the source · abstract, characters 721–800 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

UV-C leaves had higher pathogenesis-related protein expression.

Taxon
strawberryFragaria ×ananassat0
Treatment
UV‐Ce1
Outcome
expression of pathogenesis‐related proteinse0
Direction
highere0

Not reportedComparator

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

Fragaria x ananassa
Fragaria ×ananassa · TaxonIvar Leidus · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“higher expression of pathogenesis‐related proteins and the activity of several defence enzymes.”

✓ located verbatim in the source · abstract, characters 1065–1160 · show in text ↑
t0

“strawberry leaves against subsequent Mycosphaerella fragariae infection involves the action of reactive oxygen species, plant hormones, and terpenes”

✓ located verbatim in the source · title, characters 25–173 · show in text ↑
e1

“UV‐C treatment had a significant impact on gene expression in strawberry leaves”

✓ located verbatim in the source · abstract, characters 721–800 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

UV-C leaves had higher defense enzyme activity.

Taxon
strawberryFragaria ×ananassat0
Treatment
UV‐Ce1
Outcome
activity of several defence enzymese0
Direction
highere0

Not reportedComparator

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

Fragaria x ananassa
Fragaria ×ananassa · TaxonIvar Leidus · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“higher expression of pathogenesis‐related proteins and the activity of several defence enzymes.”

✓ located verbatim in the source · abstract, characters 1065–1160 · show in text ↑
t0

“strawberry leaves against subsequent Mycosphaerella fragariae infection involves the action of reactive oxygen species, plant hormones, and terpenes”

✓ located verbatim in the source · title, characters 25–173 · show in text ↑
e1

“UV‐C treatment had a significant impact on gene expression in strawberry leaves”

✓ located verbatim in the source · abstract, characters 721–800 · show in text ↑
Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

The authors implicated terpenes, reactive oxygen species and three hormones in UV-C priming.

Taxon
strawberryFragaria ×ananassat0
Compound
abscisic acide0
Outcome
improved protection against pathogense0
Qualifier
the involvement of terpenes, reactive oxygen speciese0

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

Fragaria x ananassa
Fragaria ×ananassa · TaxonIvar Leidus · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“the involvement of terpenes, reactive oxygen species, and abscisic acid, salicylic acid, jasmonic acid, and their transduction factors, in the network underpinning UV‐C priming of growing crops for improved protection against pathogens.”

✓ located verbatim in the source · abstract, characters 1216–1452 · show in text ↑
t0

“strawberry leaves against subsequent Mycosphaerella fragariae infection involves the action of reactive oxygen species, plant hormones, and terpenes”

✓ located verbatim in the source · title, characters 25–173 · show in text ↑

uv · quality: phytochemicals · Fragaria x ananassa (strawberry)Positive and negative results

16 papers: 10 positive, 6 negative or no effect

9 papers in the same direction as this paper · 5 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
  2. positive
  3. no effect

12 papers more in this group

See all 16 papers →

uv · physiology: antioxidant enzymes · Fragaria x ananassa (strawberry)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

uv · molecular: expression · Fragaria x ananassa (strawberry)Results agree

5 papers: 5 positive, 0 negative or no effect

4 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

1 paper more in this group

See all 5 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.