Beneckea natriegens as an ideal organism for teaching basic microbial physiology in schools

1988 ◽  
Vol 16 (5) ◽  
pp. 767-767 ◽  
Author(s):  
A. C. FAIRCLOUGH ◽  
B. DAVIS ◽  
D. JOHNSON ◽  
P. LOXLEY ◽  
J. MILLS ◽  
...  
Keyword(s):  
Microbial Physiology ◽  
Beneckea Natriegens

Recent Insights into Microbial Physiology

2006 ◽  
Vol 89 (3-4) ◽  
pp. 141-149 ◽  
Author(s):  
Walid M. El-Sharoud ◽  
Robin J. Rowbury
Keyword(s):  
Microbial Physiology

scholarly journals Methanogens: pushing the boundaries of biology

2018 ◽  
Vol 2 (4) ◽  
pp. 629-646 ◽  
Author(s):  
Nicole R. Buan
Keyword(s):  
Energy Conservation ◽  
Trophic Interactions ◽  
Theoretical Basis ◽  
High Energy ◽  
Microbial Conversion ◽  
Microbial Physiology ◽  
Methane Gas ◽  
Biogenic Carbon ◽  
Environmental Microbes

Methanogens are anaerobic archaea that grow by producing methane gas. These microbes and their exotic metabolism have inspired decades of microbial physiology research that continues to push the boundary of what we know about how microbes conserve energy to grow. The study of methanogens has helped to elucidate the thermodynamic and bioenergetics basis of life, contributed our understanding of evolution and biodiversity, and has garnered an appreciation for the societal utility of studying trophic interactions between environmental microbes, as methanogens are important in microbial conversion of biogenic carbon into methane, a high-energy fuel. This review discusses the theoretical basis for energy conservation by methanogens and identifies gaps in methanogen biology that may be filled by undiscovered or yet-to-be engineered organisms.

scholarly journals Integrating microbial physiology and physiochemical principles in soils with the MIcrobial-MIneral Carbon Stabilization (MIMICS) model

2014 ◽  
Vol 11 (1) ◽  
pp. 1147-1185 ◽  
Author(s):  
W. R. Wieder ◽  
A. S. Grandy ◽  
C. M. Kallenbach ◽  
G. B. Bonan
Keyword(s):  
Litter Quality ◽  
Clay Content ◽  
Temperature Sensitive ◽  
Microbial Physiology ◽  
Carbon Stabilization ◽  
Physical Protection ◽  
Soil C ◽  
Substrate Quality ◽  
Functional Types ◽  
Microbial Residues

Abstract. Previous modeling efforts document divergent responses of microbial explicit soil biogeochemistry models when compared to traditional models that implicitly simulate microbial activity, particularly following environmental perturbations. However, microbial models are needed that capture current soil biogeochemical theories emphasizing the relationships between litter quality, functional differences in microbial physiology, and the physical protection of microbial byproducts in forming stable soil organic matter (SOM). To address these limitations we introduce the MIcrobial-MIneral Carbon Stabilization (MIMICS) model. In MIMICS, the turnover of litter and SOM pools are governed by temperature sensitive Michaelis–Menten kinetics and the activity of two physiologically distinct microbial functional types. The production of microbial residues through microbial turnover provides inputs to SOM pools that are considered physically or chemically protected. Soil clay content determines the physical protection of SOM in different soil environments. MIMICS adequately simulates the mean rate of leaf litter decomposition observed at a temperate and boreal forest sites, and captures observed effects of litter quality on decomposition rates. Initial results from MIMICS suggest that soil C storage can be maximized in sandy soils with low-quality litter inputs, whereas high-quality litter inputs may maximize SOM accumulation in finely textured soils that physically stabilize microbial products. Assumptions in MIMICS about the degree to which microbial functional types differ in the production, turnover, and stabilization of microbial residues provides a~mechanism by which microbial communities may influence SOM dynamics in mineral soils. Although further analyses are needed to validate model results, MIMICS allows us to begin exploring theoretical interactions between substrate quality, microbial community abundance, and the formation of stable SOM.

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