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Postharvest UV-B Irradiation Stimulated Ginsenoside Rg(1) Biosynthesis through Nitric Oxide (NO) and Jasmonic Acid (JA) in Panax quinquefolius Roots
The study highlights the influence and signal transduction mechanism of postharvest UV-B on the production of Rg(1) in Panax quinquefolius roots during the drying process. The results showed that postharvest UV-B irradiation induced generation of nitric oxide (NO), jasmonic acid (JA), and ginsenosid...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6515039/ https://www.ncbi.nlm.nih.gov/pubmed/31013885 http://dx.doi.org/10.3390/molecules24081462 |
Sumario: | The study highlights the influence and signal transduction mechanism of postharvest UV-B on the production of Rg(1) in Panax quinquefolius roots during the drying process. The results showed that postharvest UV-B irradiation induced generation of nitric oxide (NO), jasmonic acid (JA), and ginsenoside Rg(1) of P. quinquefolius roots. The UV-B-induced increase of Rg(1) was suppressed by NO-specific scavenger (cPTIO) and NOS inhibitors (PBITU), JA synthesis inhibitor (SHAM), and JA synthesis inhibitor (PrGall), indicating that NO and JA played essential parts in UV-B-induced Rg(1). External NO inhibitors treatment inhibited UV-B-induced accumulation of NO and JA, which suggested that NO was located upstream of the JA signal pathway. NO-caused Rg(1) was inhibited by SHAM and PrGall, implying JA participated in transmitting signal NO to Rg(1) accumulation. In other words, NO mediated the postharvest UV-B-induced Rg(1) accumulation by the JA-dependent pathway in P. quinquefolius roots during the drying process, which helps us understand the underlying mechanisms involved in UV-B-induced Rg(1) production and provides information helpful for P. quinquefolius production. |
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