The inoculation of Bacillus paralicheniformis and Streptomyces thermoviolaceus enhances the lignocellulose degradation and microbial communities during spent mushroom substrate composting.

Autor: Zhang J; College of Plant Science and Technology, Beijing University of Agriculture, Beijing Key Laboratory for Agricultural Application and New Technique, Beijing, 102206, China., Zou YJ; State Key Laboratory of Efficient Utilization of Arid and Semi-Arid Arable Land in Northern China, Beijing, 100081, China; Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China., Wang SL; College of Plant Science and Technology, Beijing University of Agriculture, Beijing Key Laboratory for Agricultural Application and New Technique, Beijing, 102206, China., Zhang WW; College of Plant Science and Technology, Beijing University of Agriculture, Beijing Key Laboratory for Agricultural Application and New Technique, Beijing, 102206, China., Chen QJ; College of Plant Science and Technology, Beijing University of Agriculture, Beijing Key Laboratory for Agricultural Application and New Technique, Beijing, 102206, China., Wang QY; College of Plant Science and Technology, Beijing University of Agriculture, Beijing Key Laboratory for Agricultural Application and New Technique, Beijing, 102206, China., Guan TK; College of Plant Science and Technology, Beijing University of Agriculture, Beijing Key Laboratory for Agricultural Application and New Technique, Beijing, 102206, China., Zhang JY; College of Plant Science and Technology, Beijing University of Agriculture, Beijing Key Laboratory for Agricultural Application and New Technique, Beijing, 102206, China., Zhao MR; College of Plant Science and Technology, Beijing University of Agriculture, Beijing Key Laboratory for Agricultural Application and New Technique, Beijing, 102206, China., Zhang GQ; College of Plant Science and Technology, Beijing University of Agriculture, Beijing Key Laboratory for Agricultural Application and New Technique, Beijing, 102206, China. Electronic address: zhanggqbua@163.com.
Jazyk: angličtina
Zdroj: Environmental research [Environ Res] 2024 Dec 15; Vol. 263 (Pt 2), pp. 120157. Date of Electronic Publication: 2024 Oct 15.
DOI: 10.1016/j.envres.2024.120157
Abstrakt: The burgeoning global mushroom industry has precipitated challenges related to the efficient and sustainable utilization of spent mushroom substrate (SMS). Composting is regarded as an efficient way for the ecological utilization of SMS. The addition of microbial inoculants can promote the composting process and improve the quality of compost products. This study introduced two bacterial inoculants, Bacillus paralicheniformis HL-05 (BP) and Streptomyces thermoviolaceus LC-10 (ST), into the composting process of SMS. The impact of these inoculants was evaluated through analyses of physicochemical properties, lignocellulose degradation, and high-throughput sequencing to elucidate their ecological roles and optimize the composting process. The results suggest that inoculation with BP and ST significantly prolonged the thermophilic stage by 2-3 days, representing an increase of 22.22-33.33%. Moreover, it boosted the degradation rates of cellulose, hemicellulose, and lignin by 18.37-29.77%, 35.74-50.43%, and 40.32-40.83%, respectively, compared to the control. Furthermore, inoculation rapidly altered the microbial community structure during the rapid temperature-rising stage and strengthened interconnections among composting microorganisms. The microbial inoculation substantially enhanced the proliferation of thermophilic lignocellulose-degrading microorganisms during the thermophilic stage, thereby facilitating the utilization of lignocellulose. This study proposes a novel and effective strategy for SMS composting using microbial inoculants.
Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests:Guo-Qing Zhang reports financial support was provided by Beijing University of Agricultur. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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