Related Experiment Video
Updated: Mar 24, 2026
07:46
Temperature Response of Soil Organic Matter Decomposition Rates: Construction and Applications of a Temperature Gradient Block
Published on: January 30, 2026
362
Temperature affects microbial abundance, activity and interactions in anaerobic digestion
Qiang Lin1, Jo De Vrieze2, Jiabao Li3
1Key Laboratory of Environmental and Applied Microbiology, CAS, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Bioresource Technology
|March 14, 2016
Summary
Optimal anaerobic digestion performance for methane production occurs around 50°C. This study reveals temperature impacts microbial interactions and functional roles, crucial for efficient biogas generation.
Area of Science:
- Environmental microbiology
- Biotechnology
- Biochemical engineering
Background:
- Temperature significantly influences anaerobic digestion (AD) efficiency.
- Microbial community structure and function are temperature-dependent.
- Understanding microbial interactions is key to optimizing AD processes.
Purpose of the Study:
- To investigate the impact of a temperature gradient (25°C to 55°C) on anaerobic digestion performance.
- To analyze microbial abundance, activity, and interaction networks using 16S rRNA and 16S ribosomal RNA gene-based approaches.
- To identify microbial functional roles and interactions under varying temperatures.
Main Methods:
- Utilized amplicon sequencing with 16S ribosomal RNA and 16S rRNA gene-based methods.
- Applied comparative analysis of historical and in-situ microbial data.
- Investigated microbial community dynamics across a temperature range of 25°C to 55°C.
Main Results:
- Methane and biogas production increased with temperature up to 50°C, then decreased at 55°C.
- Higher methane yields at 50°C were linked to enhanced methanogenesis and hydrolysis.
- Well-defined methanogenic modules with comprehensive interactions and increased functional orderliness were observed at optimal temperatures.
Conclusions:
- Temperature is a critical factor for maximizing methane production in anaerobic digestion.
- Microbial functional roles and interactions are vital for efficient biogas generation.
- Evaluating microbial community dynamics provides insights into optimizing AD processes.
Related Concept Videos
01:27Factors Influencing Microbial Growth: Temperature
1.8K
Microorganisms display remarkable adaptations, enabling them to thrive in diverse ecological niches across a wide range of temperatures. Temperature profoundly influences microbial growth by affecting enzymatic activity, membrane fluidity, and other cellular processes.Each microorganism operates within a specific temperature range defined by three cardinal points: minimum, optimum, and maximum. Below the minimum temperature, membranes lose fluidity, halting transport processes. Above the...
1.8K
01:30Diversity of Archaea I
836
Archaea, a domain of single-celled microorganisms, are classified into five major phyla based on genetic and biochemical characteristics: Euryarchaeota, Crenarchaeota, Thaumarchaeota, Korarchaeota, and Nanoarchaeota. Among these, the phylum Euryarchaeota is notable for its remarkable diversity in morphology, metabolism, and ecological adaptations.Morphological and Metabolic DiversityMembers of Euryarchaeota exhibit a variety of cellular shapes, including rods and cocci. Their metabolic pathways...
836
01:26Microbes and Methanogenesis
15
Methanogenesis is a critical microbial process in anaerobic ecosystems responsible for the biological production of methane, a potent greenhouse gas and valuable biofuel. This metabolic pathway is primarily facilitated by methanogenic archaea, which thrive in anoxic environments such as wetlands, sediments, and animal gastrointestinal tracts. The absence of oxygen in these habitats prevents aerobic respiration, thereby favoring alternative biochemical pathways for organic matter degradation.In...
15
01:21Hyperthermophilic Bacteria
718
Domain Bacteria includes some unique hyperthermophilic species. They exhibit remarkable adaptations that enable survival in extreme environments.Thermotoga species are rod-shaped, gram-negative, non-sporulating hyperthermophiles that form a sheath-like envelope called a toga. They ferment sugars or starch, producing lactate, acetate, CO₂, and H₂, and can also grow via anaerobic respiration using H₂ and ferric iron. Found in hot springs and hydrothermal vents, over 20% of their...
718
01:30Marine Microbial Ecology
16
Marine microbial ecosystems are shaped by distinct physicochemical limits, including high salinity, low nutrient availability, and fluctuating oxygen levels. These conditions favor smaller microbial cell sizes, which maximize their surface-to-volume ratio for efficient nutrient uptake.Microbial activity and community composition are closely linked to biogeochemical cycles, particularly in dynamic environments like estuaries, where halotolerant microbes thrive in response to variable salinity...
16
01:27Microbes and Climate Change
16
Microorganisms are pivotal agents in Earth's biogeochemical cycles, significantly influencing climate dynamics through their metabolic activities. These microbes modulate the levels of key greenhouse gases by both contributing to and helping mitigate climate change.Microbial Contributions to Greenhouse Gas EmissionsRising global temperatures accelerate microbial metabolism, which, in turn, speeds up the decomposition of organic matter. This process releases carbon dioxide (CO₂) through...
16