三株长蠕孢属真菌对毛脉酸模幼苗中白藜芦醇、白藜芦醇苷含量和产量的影响

以幼苗期毛脉酸模（Rumex gmelini Turcz.）为实验材料, 研究经长蠕孢属真菌（Helminthosporium carbonum）侵染后毛脉酸模中白藜芦醇和白藜芦醇苷的含量和产量的变化。实验结果表明：幼苗期毛脉酸模中的白藜芦醇在受到外界真菌诱导时对真菌具有一定的选择性。而且同一真菌的不同菌株诱导强度也有一定的差异，主要表现在起效时间上。但白藜芦醇苷含量受外界真菌诱导的专属性不强，且影响强度与诱导浓度有关。对幼苗期毛脉酸模各种诱导处理都没有使其生物量受到明显的抑制。通过试验筛选出大斑病长蠕孢001使幼苗期毛脉酸模中白藜芦醇苷和白藜芦醇产量影响较大，与对照相比分别使其提高1.54倍和3.99倍。

Effects of Three Fungi of Helminthosporium on the Contents and Productions of Resveratrol and Polydatin in the Seedling of Rumex gmelinii

The effects of fungi of Helminthosporium on the contents and productions of resveratrol and polydatin in the seedling of Rumex gmelini were studied. The results showed that the specialization of polydatin to fungi in the seedling of R. gmelinii was not obvious and there are some relativity between the effect and the concentration of spore suspension. Resveratrol showed some selectivity to fungi. Different strains of Helminthosporium turcicum Passerini had different induction effects and mainly acted on the starting time. Little inhibition effect of various treatments on biomass of the seedling R. gmelinii was observed during the 0-50 d. H. turcicum Passerini 001 could induce the production of polydatin and resveratrol in the seedling R. gmelinii, which increase 1.54 and 3.99 folds, respectively, to the contro1 ones at the strongest induction conditions.