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Zheng H, Wang M, Fan Y, Yang J, Zhao Z, Chen H, Ye Z, Zheng Z, Yu K. Reuse of composted food waste from rural China as vermicomposting substrate: effects on earthworms, associated microorganisms, and economic benefits. ENVIRONMENTAL TECHNOLOGY 2024; 45:2685-2697. [PMID: 36846968 DOI: 10.1080/09593330.2023.2184728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 02/18/2023] [Indexed: 06/18/2023]
Abstract
ABSTRACTAerobic composting of food waste (FW) from rural China using a composting device results in a substantial financial burden on the government. This study aimed to assess the feasibility of mitigating this cost using vermicomposting of composted FW. The specific aims were to elucidate the effects of composted FW on earthworm growth and reproduction, reveal the changes in the physical and chemical properties of earthworm casts during vermicomposting, identify the microbial community structure associated with vermicomposting, and perform a financial analysis based on the yield of earthworms and earthworm casts. Mixing composted FW and mature cow dung in an equal ratio achieved the highest earthworm reproduction rate, where 100 adult earthworms produced 567 juvenile earthworms and 252 cocoons in 40 d. Earthworms reduce salt content of vermicomposting substrates by assimilating Na+ and promoting humification by transforming humin into humic and fulvic acid, thus producing earthworm casts with a high generation index > 80%. When composted FW was added to a vermicomposting substrate, a distinctive microbial community structure with alkaliphilic, halophilic, and lignocellulolytic microorganisms dominated the microflora. The dominant bacterial species was Saccharopolyspora rectivirgula, and the dominant fungal species changed from Kernia nitida to Coprinopsis scobicola. Furthermore, microbial genes for refractory organic matter and fat degradation were observed in Vibrio cholerae, Kernia nitida, and Coprinopsis scobicola. Financial analysis showed that vermicomposting has the potential to reduce the cost associated with FW disposal from $ 57 to $ 18/t.
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Affiliation(s)
- Huabao Zheng
- College of Environmental and Resource Science, Zhejiang A&F University, Linan, People's Republic of China
| | - Min Wang
- College of Environmental and Resource Science, Zhejiang A&F University, Linan, People's Republic of China
| | - Yueqin Fan
- College of Environmental and Resource Science, Zhejiang A&F University, Linan, People's Republic of China
| | - Jian Yang
- College of Environmental and Resource Science, Zhejiang A&F University, Linan, People's Republic of China
| | - Zhuoqun Zhao
- College of Environmental and Resource Science, Zhejiang A&F University, Linan, People's Republic of China
| | - Hengyuan Chen
- College of Environmental and Resource Science, Zhejiang A&F University, Linan, People's Republic of China
| | - Zhenwei Ye
- Office of Qingshanhu strict, Government of Linan district, Linan, People's Republic of China
| | - Zhanwang Zheng
- College of Environmental and Resource Science, Zhejiang A&F University, Linan, People's Republic of China
- Zhejiang Sunda Public Environmental Protection Co. Ltd., Hangzhou, People's Republic of China
| | - Kefei Yu
- College of Environmental and Resource Science, Zhejiang A&F University, Linan, People's Republic of China
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Lee Díaz AS, Minchev Z, Raaijmakers JM, Pozo MJ, Garbeva P. Impact of bacterial and fungal inoculants on the resident rhizosphere microbiome and the volatilome of tomato plants under leaf herbivory stress. FEMS Microbiol Ecol 2024; 100:fiad160. [PMID: 38331428 PMCID: PMC10858387 DOI: 10.1093/femsec/fiad160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 11/16/2023] [Accepted: 02/07/2024] [Indexed: 02/10/2024] Open
Abstract
Various studies have addressed the impact of microbial inoculants on the composition of the resident microbiome. How microbial inoculants impact plant metabolism and interact with the resident rhizobiota under herbivory stress remains elusive. Here, we investigated the impact of two bacterial and two fungal inoculants, inoculated as single species and as a synthetic community, on the rhizosphere microbiome and volatilome of tomato plants (Solanum lycopersicum) comparing nonstress conditions to exposed to leaf herbivory by Spodoptera exigua. Based on amplicon sequencing analysis, rhizobacterial community composition was significantly affected by all four inoculants and the magnitude of this effect was dependent on herbivory stress. Fungal community composition was altered by the microbial inoculants but independent of herbivory stress. The rhizosphere volatilome was impacted by the microbial inoculation and differences between treatments were evened under herbivory stress. Each microbial inoculant caused unique changes in the volatilome of stressed plants but also shared similar responses, in particular the enhanced production of dimethyl disulfide and benzothiazole. In conclusion, the introduction of microbial inoculants in the tomato rhizosphere caused unique as well as common changes in the rhizosphere microbiome and volatilome, but these changes were minor compared to the microbiome changes induced by herbivory stress.
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Affiliation(s)
- Ana Shein Lee Díaz
- Department of Microbial Ecology, The Netherlands Institute of Ecology (NIOO-KNAW), Droevendaalsesteeg 10, 6708 PB Wageningen, the Netherlands
| | - Zhivko Minchev
- Department of Soil Microbiology and Symbiotic Systems
, Estación Experimental del Zaidín, Consejo Superior de Investigaciones Cientfícias (CSIC), Calle Prof. Albareda, 1, 18008, Granada, Spain
| | - Jos M Raaijmakers
- Department of Microbial Ecology, The Netherlands Institute of Ecology (NIOO-KNAW), Droevendaalsesteeg 10, 6708 PB Wageningen, the Netherlands
- Institute of Biology, Leiden University, Sylviusweg 72, 2333 BE, Leiden, the Netherlands
| | - María José Pozo
- Department of Soil Microbiology and Symbiotic Systems
, Estación Experimental del Zaidín, Consejo Superior de Investigaciones Cientfícias (CSIC), Calle Prof. Albareda, 1, 18008, Granada, Spain
| | - Paolina Garbeva
- Department of Microbial Ecology, The Netherlands Institute of Ecology (NIOO-KNAW), Droevendaalsesteeg 10, 6708 PB Wageningen, the Netherlands
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Wang K, Mao H, Li X. Functional characteristics and influence factors of microbial community in sewage sludge composting with inorganic bulking agent. BIORESOURCE TECHNOLOGY 2018; 249:527-535. [PMID: 29080516 DOI: 10.1016/j.biortech.2017.10.034] [Citation(s) in RCA: 132] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 10/01/2017] [Accepted: 10/07/2017] [Indexed: 05/25/2023]
Abstract
The metabolic function of microbial community dominated organics and nutrients transformation in aerobic composting process. In this study, the metabolic characteristics of bacterial and fungal communities were evaluated in 60 days composting of sludge and pumice by using FUNGuild and PICRUSt, respectively. The results showed that microbial community structure and metabolic characteristics were distinctively different at four composting periods. Bacterial genes related to carbohydrate metabolisms decreased during the first 30 days, but bacterial sequences associated with oxidative phosphorylation and fatty acids synthesis were enhanced in curing phase. Most of fungal animal pathogen and plant pathogen disappeared after treatment, and the abundance of saprotroph fungi increased from 44.3% to 97.8%. Oxidation reduction potential (ORP) significantly increased from -28 to 175 mV through incubation. RDA analysis showed that ORP was a crucial factor on the succession of both bacterial and fungal communities in sludge composting system.
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Affiliation(s)
- Ke Wang
- School of Municipal and Environmental Engineering, Harbin Institute of Technology, 73 Huanghe Road, Harbin, Heilongjiang 150090, China
| | - Hailong Mao
- School of Municipal and Environmental Engineering, Harbin Institute of Technology, 73 Huanghe Road, Harbin, Heilongjiang 150090, China
| | - Xiangkun Li
- School of Municipal and Environmental Engineering, Harbin Institute of Technology, 73 Huanghe Road, Harbin, Heilongjiang 150090, China.
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Fungal diversity on dung of tropical animals in temperate environments: Implications for reconstructing past megafaunal populations. FUNGAL ECOL 2017. [DOI: 10.1016/j.funeco.2016.12.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Souza CAFD, Lima DX, Gurgel LMS, Santiago ALCMDA. Coprophilous Mucorales (ex Zygomycota) from three areas in the semi-arid of Pernambuco, Brazil. Braz J Microbiol 2016; 48:79-86. [PMID: 27769884 PMCID: PMC5220632 DOI: 10.1016/j.bjm.2016.09.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Accepted: 06/20/2016] [Indexed: 11/21/2022] Open
Abstract
Mucorales comprises fungi commonly isolated as saprobes from soil, dung, stored grains and plants. Although these fungi have been studied in several countries, there are relatively a few reports of them in semi-arid areas. Therefore, the aims of the present study were to assess and compare the Mucorales communities in dung from different species and breeds of herbivores in the semi-arid of Pernambuco, based on the frequency of occurrence and species richness of these fungi. Samples of dung collected in the cities of Arcoverde, Serra Talhada and Sertânia were incubated in moist chambers in triplicate. Altogether, 24 taxa of Mucorales distributed in the genera Absidia, Circinella, Cunninghamella, Lichtheimia, Mucor, Pilobolus, Rhizopus and Syncephalastrum were identified. The highest species richness was found in sheep excrement. Mucor circinelloides f. griseo-cyanus was the most common taxon, followed by M. ramosissimus. The similarity of the composition of Mucorales species was greatest between the excrements of Guzerá and Sindi breeds (bovine). All mucoralean species isolated are being cited for the first time from animal dung found in Caatinga and a new species of Mucor was recorded. An identification key for species of Mucorales from dung in the semi-arid region of Brazil is provided.
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Affiliation(s)
- Carlos Alberto Fragoso de Souza
- Programa de Pós-graduação em Biologia de Fungos. Universidade Federal de Pernambuco, Departamento de Micologia, Recife, PE, Brasil
| | - Diogo Xavier Lima
- Programa de Pós-graduação em Biologia de Fungos. Universidade Federal de Pernambuco, Departamento de Micologia, Recife, PE, Brasil
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de Azevedo Santiago ALCM, Botelho Trufem SF, Malosso E, dos Santos PJP, de Queiroz Cavalcanti MA. Zygomycetes From Herbivore Dung in the Ecological Reserve of Dois IrmÃOs, Northeast Brazil. Braz J Microbiol 2011; 42:89-95. [PMID: 24031609 PMCID: PMC3768924 DOI: 10.1590/s1517-83822011000100012] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2010] [Revised: 04/21/2010] [Accepted: 08/26/2010] [Indexed: 11/22/2022] Open
Abstract
Thirty-eight taxa of Zygomycetes distributed in 15 genera were recorded from tapir (Tapirus terrestris), camel (Camelus bactrianus), horse (Equus caballus), deer (Cervus elaphus), agouti (Dasyprocta aguti), donkey (Equus asinus), llama (Llama glama) and waterbuck (Kobus ellipsiprymnus) dung collected at the Reserva Ecológica de Dois Irmãos located in Recife, State of Pernambuco, Northeast Brazil. The samples were collected on a monthly basis from June 2005 to May 2006, taken to the laboratory and incubated in moist chambers. Higher number of taxa was observed in the excrements of tapir, followed by deer and donkey. The highest number of species was detected for Mucor, followed by Pilobolus. Statistical analyses showed significant differences in richness of Zygomycetes taxa between the herbivore dung types. Differences of species composition, however, were weak. Seasonality influenced the Zygomycetes species composition but not its richness. Variations in taxa composition between ruminants and non-ruminants dung were non significant.
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Affiliation(s)
| | | | - Elaine Malosso
- Programa de Pós-graduação em Biologia de Fungos, Universidade Federal de Pernambuco, Recife, PE, Brasil
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Masunga GS, Andresen Ø, Taylor JE, Dhillion SS. Elephant dung decomposition and coprophilous fungi in two habitats of semi-arid Botswana. ACTA ACUST UNITED AC 2006; 110:1214-26. [PMID: 17002891 DOI: 10.1016/j.mycres.2006.07.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2006] [Revised: 05/11/2006] [Accepted: 07/05/2006] [Indexed: 11/18/2022]
Abstract
In order to understand the impact of habitat changes on ecosystem processes caused by increased populations of elephants, elephant dung decomposition was studied in semi-arid Botswana. Dung decomposition rates were studied with and without the presence of arthropods, using pairs of exposed dung and dung enclosed in nylon-mesh bags, respectively. Dung decomposition rates were lower in the absence of arthropods. The rates in the late wet season were higher in the scrubland than in the woodland. In the early dry season, immediately after the wet season, the rates were higher in the woodland than in the scrubland. The difference in decomposition rates between habitats was attributed to microclimatic conditions created by vegetation cover. With regard to fungal succession, Cladosporium cladosporioides and Eurotium brefeldianum occurred only in the late stages of dung decomposition whereas Talaromyces helicus, Cercophora coprophila and Sporormiella minima occurred in all the stages. Although there was no significant difference in Shannon-Weiner fungal species diversity index between habitats, seasons, dung ages and laboratory incubation periods, there were significant differences in fungal community composition between these parameters. Species richness was higher in the late wet season than in the early dry season, indicating the importance of moist conditions for a large diversity of fungal species.
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Affiliation(s)
- Gaseitsiwe S Masunga
- Department of Ecology & Natural Resource Management, Norwegian University of Life Sciences, Aas, Norway.
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