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
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”
Claim · model-written summary
Adjacent healthy tea plants converted absorbed (Z)-3-hexen-1-ol into three insect defensive glycosides.
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.”
t0“Tea (Camellia sinensis)”
Claim · model-written summary
(Z)-3-hexen-1-ol activated jasmonic acid synthesis and enhanced tea insect resistance.
Verbatim
e0“(Z)-3-hexen-1-ol also activates the synthesis of jasmonic acid to enhance the insect resistance of tea plants”
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”
t0“Tea (Camellia sinensis)”
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