Application of the mushroom volatile 1-octen-3-ol to suppress a morel disease caused by Paecilomyces penicillatus
文献类型： 外文期刊
作者： Yu, Yang 1 ; Liu, Tianhai 1 ; Liu, Lixu 1 ; Chen, Ying 1 ; Tang, Jie 1 ; Peng, Weihong 1 ; Tan, Hao 1 ;
作者机构： 1.Sichuan Acad Agr Sci, Sichuan Inst Edible Fungi, Natl Local Joint Engn Lab Breeding & Cultivat Edi, Chengdu, Peoples R China
2.Minist Agr & Rural Affairs, Natl Observing & Expt Stn Agr Microbiol Chengdu, Chengdu, Peoples R China
3.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Drylands Salinizat Res Stn, Lanzhou, Peoples R China
关键词： Morchella; Fructification failure; 1-Octen-3-ol; Disease suppression; Soil microbial diversity
期刊名称：APPLIED MICROBIOLOGY AND BIOTECHNOLOGY （ 影响因子：5.56； 五年影响因子：5.365 ）
ISSN： 0175-7598
年卷期： 2022 年 106 卷 12 期
页码：
收录情况： SCI
摘要： Morels (Morchella spp.) are of great economic and scientific value. Paecilomyces penicillatus can cause white mold disease (WMD) widely emerging on morel ascocarps and is also a potential factor causing morel fructification failure. 1-octen-3-ol is a mushroom volatile compound with broad-spectrum antimicrobial activities. This study aimed to control the morel disease caused by P. penicillatus through suppressing P. penicillatus in the soil cultivated with Morchella sextelata using 1-octen-3-ol. Safe concentration of 1-octen-3-ol was estimated by comparing its inhibitory effect against P. penicillatus and M. sextelata, respectively, with mycelium-growth experiments on agar plates. The results showed that M. sextelata possesses a higher tolerance to 1-octen-3-ol than P. penicillatus with a 1-octen-3-ol concentration between 0 and 200 mu L/L. Based on that, a sandy soil was supplemented with low (50 mu L/L) or high concentration (200 mu L/L) of 1-octen-3-ol. The effects of 1-octen-3-ol on soil microbial communities, WMD incidence, and morel yield were investigated. Compared to the non-supplemented control group, the incidence of WMD and the proportion of Paecilomyces in the soils of low- and high-concentration treatment groups were significantly decreased, corresponding to a significant increase in morel ascocarp yield. It suggests that 1-octen-3-ol effectively suppressed P. penicillatus in the soil, thereby reducing the severity of WMD and improving the morel yield. The diversity of soil bacterial communities was also altered by 1-octen-3-ol supplement. The proportion of Rhodococcus spp. in the soil was positively correlated with the 1-octen-3-ol concentration and ascocarp yield, suggesting its potential role in improving morel yield.
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