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Erschienen in: Biomass Conversion and Biorefinery 1/2024

26.01.2022 | Original Article

Phagotrophic protists can change microbial nitrogen conversion patterns during swine manure composting

verfasst von: Yanan Yin, Mengtong Li, Chao Yang, Xunzhang Hu, Wei Zheng, Manli Duan, Xiaochang Wang, Rong Chen

Erschienen in: Biomass Conversion and Biorefinery | Ausgabe 1/2024

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Abstract

Protists are important microorganisms involved in the transformation of nutrients, but little information is available regarding their roles in composting. This study investigated the changes in the protist community during composting and their relationships with the conversion of nitrogen. The protist community structure varied among the different composting phases, but the communities were similar in the cooling phase and at the end of the thermophilic phase. Phagotrophic protists such as Acantharea-Group-II_XX and Acantharea_XXX dominated in the composting process. The abundance of Acantharea-Group-II_XX increased by 12.8% in the thermophilic phase, whereas that of Acantharea_XXX increased by 74.5% and 275.3% during the cooling and maturation phases, respectively. The protist community was mainly affected by the NO3 and NO2 concentrations and the bacterial community, where NO3 and NO2 inhibited phagotrophic protists. Furthermore, compared with the nitrifying bacterial communities, the denitrifying bacterial communities were more conducive to the growth of Acantharea-Group-II_XX and Acantharea_XXX. Phagotrophic protists were key predators that regulated bacteria with denitrification functions.

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Metadaten
Titel
Phagotrophic protists can change microbial nitrogen conversion patterns during swine manure composting
verfasst von
Yanan Yin
Mengtong Li
Chao Yang
Xunzhang Hu
Wei Zheng
Manli Duan
Xiaochang Wang
Rong Chen
Publikationsdatum
26.01.2022
Verlag
Springer Berlin Heidelberg
Erschienen in
Biomass Conversion and Biorefinery / Ausgabe 1/2024
Print ISSN: 2190-6815
Elektronische ISSN: 2190-6823
DOI
https://doi.org/10.1007/s13399-022-02318-2

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