Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, No. 16, Dongzhimen Nanxiao Rd, Beijing, 100700, China.
College of Chinese Materia Medica, Yunnan University of Chinese Medicine, No. 1076, Yuhua Rd, Kunming, 650500, China.
Sci Rep. 2024 Oct 11;14(1):23825. doi: 10.1038/s41598-024-74304-9.
Root rot is a serious soil-borne fungal disease that seriously affects the yield and quality of Panxa ginseng. To develop a sustainable strategy for alleviating ginseng root rot, an herb-based soil amendment is suggested in this study. Mixed powers of medicinal herbs (MP) and corn stalks (CS) were used as soil amendments, respectively, along with a control group (CK) without treatment. The application of MP and CS led to significant relief from ginseng root rot. The disease index (%) represents both the incidence rate and symptom severity of the disease. The disease index of the MP and CS group was 18.52% and 25.93%, respectively, lower than that of CK (40.74%). Correspondingly, three soil enzyme activities improved; the antifungal components in the soil increased; and the relative abundances of root rot pathogens decreased in response to MP Soil enzyme activities were negatively correlated with disease grades. MP group also led to possible interactive changes in the communities of soil fungi and chemical components. In conclusion, our results suggest that the use of herb-based soil amendments has significant potential as an ecological and effective approach to controlling root rot disease of ginseng by the changing rhizosphere fungal community and soil compositions.
根腐病是一种严重的土传真菌病害，严重影响人参的产量和质量。为了开发一种可持续的缓解人参根腐病的策略，本研究提出了一种基于草药的土壤改良剂。将药用草本植物（MP）和玉米秸秆（CS）的混合物分别用作土壤改良剂，同时设不处理的对照组（CK）。MP 和 CS 的应用显著缓解了人参根腐病。病情指数（%）代表疾病的发病率和症状严重程度。MP 和 CS 组的病情指数分别为 18.52%和 25.93%，低于 CK（40.74%）。相应地，三种土壤酶活性提高；土壤中的抗真菌成分增加；根腐病病原体的相对丰度降低。土壤酶活性与病情等级呈负相关。MP 组还导致土壤真菌群落和化学成分可能发生交互变化。总之，我们的结果表明，使用基于草药的土壤改良剂通过改变根际真菌群落和土壤成分，具有控制人参根腐病的生态和有效潜力。
