Paper · 2021 · Journal of Agricultural and Food Chemistry

Herbivore-Induced (Z)-3-Hexen-1-ol is an Airborne Signal That Promotes Direct and Indirect Defenses in Tea (Camellia sinensis) under Light

Yinyin Liao; Haibo Tan; Guotai Jian; et al.

4
claims
6
verbatim quotes
32
citations
3
research areas
—
Not open access

Abstract

Tea (Camellia sinensis) is the most popular nonalcoholic beverage worldwide. During cultivation, tea plants are susceptible to herbivores and pathogens, which can seriously affect tea yield and quality. A previous report showed that (Z)-3-hexenol is a potentially efficient defensive substance. However, the molecular mechanism mediating (Z)-3-hexenol signaling in tea plants and the resulting effects on plant defenses remain uncharacterized. To clarify the signaling mechanisms in which (Z)-3-hexenol and light are involved, the gene transcription and metabolite levels were assessed, respectively. This study demonstrated that tea plants rapidly and continuously release (Z)-3-hexen-1-ol in response to an insect infestation. (Z)-3-Hexen-1-ol absorbed by adjacent healthy plants would be converted into three insect defensive compounds: (Z)-3-hexenyl-glucoside, (Z)-3-hexenyl-primeveroside, and (Z)-3-hexenyl-vicianoside identified with laboratory-synthesized standards. Moreover, (Z)-3-hexen-1-ol also activates the synthesis of jasmonic acid to enhance the insect resistance of tea plants. Additionally, a continuous light treatment induces the accumulation of (Z)-3-hexenyl-glycosides. Hence, (Z)-3-hexenol serves as a light-regulated signaling molecule that activates the systemic defenses of adjacent plants. Our study reveals the molecular mechanisms by which biotic and abiotic factors synergistically regulate the signaling functions of herbivore-induced plant volatiles in plants, providing valuable information for future comprehensive analyses of the systemic defense mechanisms in plants.

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Claims 4

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Insect infestation caused tea plants to release (Z)-3-hexen-1-ol rapidly and continuously.

Taxon
tea plantse0
Treatment
insect infestatione0
Outcome
release (Z)-3-hexen-1-ole0
Direction
rapidly and continuously releasee0

Not reportedInteractorComparator

Verbatim

e0

“tea plants rapidly and continuously release (Z)-3-hexen-1-ol in response to an insect infestation”

✓ located verbatim in the source · abstract, characters 630–727 · show in text ↑
Mechanismobservedoriginal resultpositivemeasured

Claim · model-written summary

Adjacent healthy tea plants converted absorbed (Z)-3-hexen-1-ol into three insect defensive glycosides.

Taxon
Teat0
Compound
(Z)-3-Hexen-1-ole0
Outcome
(Z)-3-hexenyl-glucoside, (Z)-3-hexenyl-primeveroside, and (Z)-3-hexenyl-vicianosidee0
Qualifier
adjacent healthy plantse0

Verbatim

e0

“(Z)-3-Hexen-1-ol absorbed by adjacent healthy plants would be converted into three insect defensive compounds: (Z)-3-hexenyl-glucoside, (Z)-3-hexenyl-primeveroside, and (Z)-3-hexenyl-vicianoside identified with laboratory-synthesized standards.”

✓ located verbatim in the source · abstract, characters 729–973 · show in text ↑
t0

“Tea (Camellia sinensis)”

✓ located verbatim in the source · abstract, characters 0–23 · show in text ↑
Mechanismauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

(Z)-3-hexen-1-ol activated jasmonic acid synthesis and enhanced tea insect resistance.

Taxon
tea plantse0
Compound
jasmonic acide0
Outcome
insect resistancee0
Qualifier
(Z)-3-hexen-1-ole0

Verbatim

e0

“(Z)-3-hexen-1-ol also activates the synthesis of jasmonic acid to enhance the insect resistance of tea plants”

✓ located verbatim in the source · abstract, characters 984–1093 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Continuous light induced accumulation of (Z)-3-hexenyl-glycosides in tea.

Taxon
Teat0
Treatment
continuous light treatmente0
Outcome
accumulation of (Z)-3-hexenyl-glycosidese0
Direction
inducese0

Not reportedComparator

Verbatim

e0

“a continuous light treatment induces the accumulation of (Z)-3-hexenyl-glycosides”

✓ located verbatim in the source · abstract, characters 1109–1190 · show in text ↑
t0

“Tea (Camellia sinensis)”

✓ located verbatim in the source · abstract, characters 0–23 · show in text ↑

infection · molecular: metabolites · Camellia sinensis (black tea)Positive and negative results

8 papers: 5 positive, 3 negative or no effect

4 papers in the same direction as this paper · 3 in the opposite direction

  1. positive
  2. negative
  3. negative

4 papers more in this group

See all 8 papers →

light · molecular: metabolites · Camellia sinensis (black tea)Positive and negative results

11 papers: 10 positive, 1 negative or no effect

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

  1. negative
  2. positive
  3. positive

7 papers more in this group

See all 11 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.