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首页> 外文期刊>Applied Microbiology and Biotechnology >Elicitor-like effects of low-energy ultrasound on plant (Panax ginseng) cells: induction of plant defense responses and secondary metabolite production
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Elicitor-like effects of low-energy ultrasound on plant (Panax ginseng) cells: induction of plant defense responses and secondary metabolite production

机译：低能超声对植物（人参）细胞的仿照效应：诱导植物防御反应和产生次级代谢产物

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In this work we examined the elicitor-like effects of low-energy ultrasound (US) on plant cells with respect to the induction of plant defense responses and secondary metabolite production. Panax ginseng cells in suspension culture were exposed to US (power less than or equal to0.1 W/cm(3) at 38.5 kHz fixed frequency) for short periods of time (30 s-6 min). Two early events in plant defense metabolism and signal transduction pathways, the increased cross-membrane ion fluxes (Ca2+ influx and K+ efflux/H+ influx) and the production of active oxygen species (AOS), were detected in sonicated cultures within 2 min after US exposure. These responses could be induced with small doses of US energy, 0.6-0.8 J/cm(3), and enhanced by increasing US energy within a non-inhibitory range. US treatment stimulated the synthesis of useful secondary metabolites, saponins of ginseng cells, without causing any net loss of the biomass yield of ginseng cell cultures. These results suggest that US can act as a potent abiotic elicitor to induce the defense responses of plant cells and to stimulate secondary metabolite production in plant cell cultures. [References: 31]
机译：在这项工作中，我们检查了低能超声（US）对植物细胞的诱导物效应，涉及植物防御反应的诱导和次级代谢产物的产生。悬浮培养中的人参细胞在短时间内（30 s-6分钟）暴露于US（功率在38.5 kHz固定频率下小于或等于0.1 W / cm（3））。在US处理后2分钟内，在超声处理过的培养物中检测到植物防御代谢和信号转导途径中的两个早期事件，即跨膜离子通量增加（Ca2 +流入和K +外排/ H +流入）和活性氧物质（AOS）的产生。接触。这些反应可以用少量US能量0.6-0.8 J / cm（3）诱导，并通过在非抑制范围内增加US能量来增强。 US处理刺激了人参细胞有用的次生代谢产物皂苷的合成，而没有引起人参细胞培养物生物量产量的任何净损失。这些结果表明，US可以作为有效的非生物引发剂来诱导植物细胞的防御反应，并刺激植物细胞培养物中次级代谢产物的产生。 [参考：31]

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