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| Effects of selenium，silicon and strontium on the mycelial growth of morel mushroom under cadmium stress |
| Received:August 19, 2024 |
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| KeyWord:beneficial element;cadmium;Morchella esculenta;growth characteristic;enrichment |
| Author Name | Affiliation | E-mail | | JIANG Lihuang | College of Animal Medicine, Hunan Agricultural University, Changsha 410000, China
Institute of Agricultural Products Quality Standard and Testing Technology, Shanghai Academy of Agricultural Sciences, Shanghai 201400, China | | | FAN Tingting | Institute of Agricultural Products Quality Standard and Testing Technology, Shanghai Academy of Agricultural Sciences, Shanghai 201400, China | | | ZHAO Xiaoyan | Institute of Agricultural Products Quality Standard and Testing Technology, Shanghai Academy of Agricultural Sciences, Shanghai 201400, China | | | ZHOU Changyan | Institute of Agricultural Products Quality Standard and Testing Technology, Shanghai Academy of Agricultural Sciences, Shanghai 201400, China | | | ZHANG Jinjing | Institute of Edible Mushroom Research, Shanghai Academy of Agricultural Sciences, Shanghai 201400, China | | | ZHAO Zhiyong | Institute of Agricultural Products Quality Standard and Testing Technology, Shanghai Academy of Agricultural Sciences, Shanghai 201400, China
Shanghai Guosen Biotechnology Co., Ltd, Shanghai 201400, China | zhaozhiyong@saas.sh.cn | | YANG Lingchen | College of Animal Medicine, Hunan Agricultural University, Changsha 410000, China | lcyang@hunau.edu.cn |
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| Abstract: |
| Soil cadmium（Cd）poses a potential threat to the production and product quality of morel, and how to effectively control Cd level is an urgent problem in morel industry. In this study, the mycelium of Morchella sextelata was selected as the experimental material. The aim of this study was to investigate the effects of selenium（Se）, silicon（Si）and strontium（Sr）on the growth and Cd enrichment of Morchella sextelata mycelium under Cd stress in PDA plate culture and PDB liquid culture. The results showed that the growth rate, mycelial morphology and biomass of the mycelium were significantly inhibited, and the malondialdehyde（MDA）levels were significantly increased after Cd treatment, indicating that Cd stress resulted in the damage effects on the mycelium of Morchella sextelata. Compared with individual Cd treatment, different concentrations of Se + Cd treatment increased the mycelial biomass by 25.79% - 35.71% and decreased MDA content by 48.10%-219.68%; different concentrations of Si + Cd increased mycelial biomass by 25.79%-30.55% and decreased MDA levels by 65.08%-102.85%; different concentrations of Sr + Cd made the colony densities and radii being increased and the edges being neat. Meanwhile, the mycelial biomass were increased by 3.57%-23.01%, the MDA content was decreased by 13.03%-42.8%, and the Cd uptake was decreased by 26.29%-32.15%. The present study showed that the addition of Se, Si and Sr could improve the growth of Morchella sextelata mycelium under Cd stress. Notably, the addition of Sr significantly reduced Cd uptake and enrichment in Morchella sextelata. This study provides new ideas and technical approach for the effective control of Cd in Morchella sextelata. |
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