Effect of salicylic acid and yeast extract on the accumulation of jasmonic acid and sesquiterpenoids in Panax ginseng adventitious roots

Effect of salicylic acid and yeast extract on the accumulation of jasmonic acid and... In different plant species, secondary metabolite biosynthesis is regulated by the phytohormone jasmonic acid (JA), which is derived by the action of lipoxygenase. In this study, we examined mono- and sesquiterpenoid accumulation and the related signal transduction pathways and biosynthetic genes in adventitious root cultures of Panax ginseng C.A. Meyer as induced by yeast extract (YE, 3 g/L), a biotic elicitor, and salicylic acid (SA, 200 μM), a signaling elicitor. The lipoxygenase (LOX) gene was highly expressed in 24 and 12 h after treatment with SA and YE. JA content was significantly increased in 24 h after SA treatment. The H2O2 content was the highest in 24 and 72 h after the onset of SA and YE treatment, respectively. RNA blot analysis showed that farnesyl diphosphate synthase (FPS) and isopentenyl pyrophosphate isomerase (IPPI) genes encoding enzymes of the biosynthesis of mono- and sesquiterpenoids were up-regulated by both elicitors. Farensol, isochiapin B sesquiterpenoids, champhor, and cineole monoterpenoids were highly accumulated after 24 h of SA treatment, while YE treatment induced bacchotricuneatin C, guaiazulene, isochiapin B, and p-benzoquinone sesquiterpenoid production. These results suggest that mono- and sesquiterpenoid accumulation induced by SA and YE occurs due to the IPPI and FPS expression and may be mediated by reactive oxygen species signaling and jasmonic acid signal transduction. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Effect of salicylic acid and yeast extract on the accumulation of jasmonic acid and sesquiterpenoids in Panax ginseng adventitious roots

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Pleiades Publishing
Copyright © 2014 by Pleiades Publishing, Ltd.
Life Sciences; Plant Physiology; Plant Sciences
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