Journal of Microbiology

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Long-term continuously monocropped peanut significantly disturbed the balance of soil fungal communities: Mingna Chen , Jiancheng Zhang , Hu Liu , Mian Wang , LiJuan Pan , Na Chen , Tong Wang , Yu Jing , Xiaoyuan Chi , Binghai Du; J. Microbiol. 2020;58(7):563-573. Published online April 22, 2020; DOI: https://doi.org/10.1007/s12275-020-9573-x

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Balancing soil microbial diversity and abundance is critical to sustaining soil health, and understanding the dynamics of soil microbes in a monocropping system can help determine how continuous monocropping practices induce soil sickness mediated by microorganisms. This study used previously constructed gradient continuous monocropping plots and four varieties with different monocropping responses were investigated. The feedback responses of their soil fungal communities to short-term and long-term continuous monocropping were tracked using high-throughput sequencing techniques. The analyses indicated that soil samples from 1 and 2 year monocropped plots were grouped into one class, and samples from the 11 and 12 year plots were grouped into another, regardless of variety. At the species level, the F. solani, Fusarium oxysporum, Neocosmospora striata, Acrophialophora levis, Aspergillus niger, Aspergillus corrugatus, Thielavia hyrcaniae, Emericellopsis minima, and Scedosporium aurantiacum taxa showed significantly increased abundances in the long-term monocropping libraries compared to the short-term cropping libraries. In contrast, Talaromyces flavus, Talaromyces purpureogenus, Mortierella alpina, Paranamyces uniporus, and Volutella citrinella decreased in the long-term monocropping libraries compared to the shortterm libraries. This study, combined with our previous study, showed that fungal community structure was significantly affected by the length of the monocropping period, but peanut variety and growth stages were less important. The increase in pathogen abundances and the decrease in beneficial fungi abundances seem to be the main cause for the yield decline and poor growth of long-term monocultured peanut. Simplification of fungal community diversity could also contribute to peanut soil sickness under long-term monocropping. Additionally, the different responses of peanut varieties to monocropping may be related to variations in their microbial community structure.

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Dynamic Changes in Prokaryotic and Eukaryotic Communities and Networks in Minimally Managed Cabbage-Cultivated Field Soils
Sentaro Ito, Junya Murakami, Mio Suzuki, Yuu Hirose, Takahiro Yamauchi, Toshihiko Eki
Genes.2025; 16(5): 482. CrossRef
Endophytic fungi promote peanut fitness by re-establishing rhizosphere nematode communities under continuous monocropping conditions
Xiang-Yu Zhang, Hao-Ran Li, Hui-Jun Jiang, Xiao-Han Wu, Chen-Yu Ma, De-Lin Luo, Wei Zhang, Chuan-Chao Dai
Plant and Soil.2024;[Epub] CrossRef
Analyses of Rhizosphere Soil Physicochemical Properties and Microbial Community Structure in Cerasus humilis Orchards with Different Planting Years
Xiaopeng Mu, Jing Wang, Hao Qin, Jingqian Ding, Xiaoyan Mou, Shan Liu, Li Wang, Shuai Zhang, Jiancheng Zhang, Pengfei Wang
Horticulturae.2024; 10(10): 1102. CrossRef
Short-term continuous monocropping reduces peanut yield mainly via altering soil enzyme activity and fungal community
Taobing Yu, Xiqing Hou, Xiangyang Fang, Bahar Razavi, Huadong Zang, Zhaohai Zeng, Yadong Yang
Environmental Research.2024; 245: 117977. CrossRef
Mechanisms and Mitigation Strategies for the Occurrence of Continuous Cropping Obstacles of Legumes in China
Lei Ma, Shaoying Ma, Guiping Chen, Xu Lu, Qiang Chai, Sheng Li
Agronomy.2023; 14(1): 104. CrossRef
Region and Crop Type Influenced Fungal Diversity and Community Structure in Agricultural Areas in Qinghai Province
Lianyu Zhou, Xuelan Ma, Longrui Wang, Wenjuan Sun, Yu Liu, Yun Ma, Huichun Xie, Feng Qiao
Agriculture.2023; 14(1): 6. CrossRef
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Yanwei Liu, Yingjie Zhou, Xiaofan Zhang, Ni Cao, Bin Li, Jiaping Liang, Qiliang Yang
Agronomy.2023; 13(8): 2093. CrossRef
Evaluation of efficacy and mechanism of Bacillus velezensis CB13 for controlling peanut stem rot caused by Sclerotium rolfsii
Shu Jia, Ce Song, Hai Dong, Xujie Yang, Xinghai Li, Mingshan Ji, Jin Chu
Frontiers in Microbiology.2023;[Epub] CrossRef
Reduced pollen activity in peanut (Arachis hypogaea L.) by long-term monocropping is linked to flower water deficit
Xue Luo, Ya-Nan Bai, Kai Sun, Wei Zhang, Chuan-Chao Dai
Plant and Soil.2023; 482(1-2): 427. CrossRef
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Wen Chen, Dixi Modi, Adeline Picot
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Effect of long-term sugar beet cultivation on rhizosphere bacterial diversity, community structure and sugar yield of sugar beet
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Long-Term Cultivation of Sugar Beet: Effect on Rhizosphere Micro-flora, Soil Fertility and Beet Productivity
Jiyu Du, Baiquan Song, Xingfan Li, Wengong Huang
Sugar Tech.2022; 24(6): 1821. CrossRef
Autotoxin affects the rhizosphere microbial community structure by influencing the secretory characteristics of grapevine roots
Qianwen Liu, Liheng Zhang, Lu Wang, Qingchun Wu, Kun Li, Xiuwu Guo
Frontiers in Microbiology.2022;[Epub] CrossRef
Endophytic Fungus Alleviates Soil Sickness in Peanut Crops by Improving the Carbon Metabolism and Rhizosphere Bacterial Diversity
Xing-Guang Xie, Yuan-Yuan Zhao, Yang Yang, Fan Lu, Chuan-Chao Dai
Microbial Ecology.2021; 82(1): 49. CrossRef
Continuous monocropping highly affect the composition and diversity of microbial communities in peanut (Arachis hypogaea L.)
Ali I. MALLANO, Xianli ZHAO, Yanling SUN, Guangpin JIANG, Huang CHAO
Notulae Botanicae Horti Agrobotanici Cluj-Napoca.2021; 49(4): 12532. CrossRef

Repositioning of a mucolytic drug to a selective antibacterial against Vibrio cholerae: In-Young Chung† , Bi-o Kim† , Hye-Jeong Jang† , You-Hee Cho; J. Microbiol. 2020;58(1):61-66. Published online January 2, 2020; DOI: https://doi.org/10.1007/s12275-020-9590-9

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Abstract

Drug repositioning, the approach to explore existing drugs for use in new therapeutic indications, has emerged as an alternative drug development strategy. In this study, we found that a mucolytic drug, N-acetylcysteine (NAC) showed antibacterial activity against Vibrio cholerae. NAC can provide acid stress that selectively inhibited the growth of V. cholerae among other bacterial pathogens. To address the antibacterial mechanism of NAC against V. cholerae, six acr (acetylcysteine- resistant) mutants were isolated from 3,118 random transposon insertion clones. The transposon insertion sites of the six mutants were mapped at the five genes. All these mutants did not display NAC resistance under acidic conditions, despite their resistance to NAC under alkaline conditions, indicating that the NAC resistance directed by the acr mutations was independent of the unusual pH-sensitivity of V. cholerae. Furthermore, all these mutants displayed attenuated virulence and reduced biofilm formation, suggesting that the acr genes are required for pathogenesis of V. cholerae. This study validates the relevance of drug repositioning for antibacterials with new modes of action and will provide an insight into a novel antibacterial therapy for V. cholerae infections to minimize side effects and resistance emergence.

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Identification of brevinin-1EMa-derived stapled peptides as broad-spectrum virus entry blockers
Mi Il Kim, Thanh K. Pham, Dahee Kim, Minkyung Park, Bi-o Kim, You-Hee Cho, Young-Woo Kim, Choongho Lee
Virology.2021; 561: 6. CrossRef

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