Institute for Applied Botany and Pharmacognosy, University of Veterinary Medicine, Wien, Austria.
Planta Med. 2010 Mar;76(4):393-8. doi: 10.1055/s-0029-1186180. Epub 2009 Oct 6.
In some medicinal plants a specific plant-fungus association, known as arbuscular mycorrhizal (AM) symbiosis, increases the levels of secondary plant metabolites and/or plant growth. In this study, the effects of three different AM treatments on biomass and sesquiterpenic acid concentrations in two IN VITRO propagated genotypes of valerian ( VALERIANA OFFICINALIS L., Valerianaceae) were investigated. Valerenic, acetoxyvalerenic and hydroxyvalerenic acid levels were analyzed in the rhizome and in two root fractions. Two of the AM treatments significantly increased the levels of sesquiterpenic acids in the underground parts of valerian. These treatments, however, influenced the biomass of rhizomes and roots negatively. Therefore this observed increase was not accompanied by an increase in yield of sesquiterpenic acids per plant. Furthermore, one of the two genotypes had remarkably high hydroxyvalerenic acid contents and can be regarded as a hydroxyvalerenic acid chemotype.
在一些药用植物中，一种特殊的植物-真菌共生关系，即丛枝菌根（AM）共生，会增加次生植物代谢物和/或植物生长的水平。在这项研究中，研究了三种不同的 AM 处理对缬草（VALERIANA OFFICINALIS L.，败酱科）两种体外繁殖基因型生物量和倍半萜酸浓度的影响。对根茎和两个根系部分中的缬烯酸、乙酰氧基缬烯酸和羟基缬烯酸水平进行了分析。两种 AM 处理显著增加了缬草根地下部分的倍半萜酸水平。然而，这些处理对根茎和根系的生物量有负面影响。因此，这种观察到的增加并没有伴随着每个植物的倍半萜酸产量的增加。此外，两个基因型中的一个具有显著高的羟基缬烯酸含量，可以被视为羟基缬烯酸化学型。
