scholarly journals Microbial carbon metabolism associated with electrogenic sulphur oxidation in coastal sediments

2015 ◽  
Vol 9 (9) ◽  
pp. 1966-1978 ◽  
Author(s):  
Diana Vasquez-Cardenas ◽  
Jack van de Vossenberg ◽  
Lubos Polerecky ◽  
Sairah Y Malkin ◽  
Regina Schauer ◽  
...  
Keyword(s):  
Carbon Metabolism ◽  
Coastal Sediments ◽  
Sulphur Oxidation ◽  
Microbial Carbon

scholarly journals The role of methanotrophy in the microbial carbon metabolism of temperate lakes

2022 ◽  
Vol 13 (1) ◽  
Author(s):  
Paula C. J. Reis ◽  
Shoji D. Thottathil ◽  
Yves T. Prairie
Keyword(s):  
Water Column ◽  
Carbon Metabolism ◽  
Volume Fraction ◽  
Specific Activity ◽  
Freshwater Ecosystems ◽  
Carbon Consumption ◽  
Temperate Lakes ◽  
Relative Contribution ◽  
Methane Oxidizing Bacteria ◽  
Microbial Carbon

AbstractPrevious stable isotope and biomarker evidence has indicated that methanotrophy is an important pathway in the microbial loop of freshwater ecosystems, despite the low cell abundance of methane-oxidizing bacteria (MOB) and the low methane concentrations relative to the more abundant dissolved organic carbon (DOC). However, quantitative estimations of the relative contribution of methanotrophy to the microbial carbon metabolism of lakes are scarce, and the mechanism allowing methanotrophy to be of comparable importance to DOC-consuming heterotrophy remained elusive. Using incubation experiments, microscopy, and multiple water column profiles in six temperate lakes, we show that MOB play a much larger role than their abundances alone suggest because of their larger cell size and higher specific activity. MOB activity is tightly constrained by the local methane:oxygen ratio, with DOC-rich lakes with large hypolimnetic volume fraction showing a higher carbon consumption through methanotrophy than heterotrophy at the whole water column level. Our findings suggest that methanotrophy could be a critical microbial carbon consumption pathway in many temperate lakes, challenging the prevailing view of a DOC-centric microbial metabolism in these ecosystems.

scholarly journals Long-term cover cropping seasonally affects soil microbial carbon metabolism in an apple orchard

Bioengineered ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 207-217 ◽  
Author(s):  
Jianfeng Yang ◽  
Tairan Zhang ◽  
Rongqin Zhang ◽  
Qianqian Huang ◽  
Huike Li
Keyword(s):  
Carbon Metabolism ◽  
Apple Orchard ◽  
Soil Microbial ◽  
Cover Cropping ◽  
Microbial Carbon

Influences of changing carbon inputs on soil microbial carbon metabolism in natural secondary forests in Yimeng mountainous area

2021 ◽  
Vol 41 (10) ◽  
Author(s):  
李秋梅，黎胜杰，王欣丽，刘波，张广娜，张弛，高远，梅鹤平，王芸 LI Qiumei
Keyword(s):  
Carbon Metabolism ◽  
Mountainous Area ◽  
Secondary Forests ◽  
Soil Microbial ◽  
Microbial Carbon

Soil microbial carbon metabolism reveals a disease suppression pattern in continuous ginger mono-cropping fields

2019 ◽  
Vol 144 ◽  
pp. 165-169 ◽  
Author(s):  
Xiaojiao Liu ◽  
Qipeng Jiang ◽  
Xueqin Hu ◽  
Shuting Zhang ◽  
Ying Liu ◽  
...  
Keyword(s):  
Carbon Metabolism ◽  
Disease Suppression ◽  
Soil Microbial ◽  
Microbial Carbon

scholarly journals The Impacts of Vegetation Types and Soil Properties on Soil Microbial Activity and Metabolic Diversity in Subtropical Forests

Forests ◽  
2019 ◽  
Vol 10 (6) ◽  
pp. 497
Author(s):  
Danbo Pang ◽  
Genzhu Wang ◽  
Yuguo Liu ◽  
Jianhua Cao ◽  
Long Wan ◽  
...  
Keyword(s):  
Functional Diversity ◽  
Carbon Metabolism ◽  
Secondary Forest ◽  
Karst Area ◽  
Vegetation Types ◽  
Soil Microbial ◽  
Pinus Yunnanensis ◽  
Carbon Substrates ◽  
Karst Areas ◽  
Microbial Carbon

Microbial functional diversity is significantly associated with both nutrient cycling and organic matter decomposition. However, how different forests as well as the soil parent materials influence the soil microbial carbon metabolism remains poorly understood. In this study, a natural secondary forest and a Pinus yunnanensis plantation, with similar climatic conditions under contrasting parent materials (clasolite in the non-karst areas and limestone in the karst areas) in Yunnan Province, China, were investigated. The soil microbial carbon metabolism diversity was assessed by the Biolog® ECO-plates. During the dry season, the soil microbial communities used carbon substrate in secondary forest and Pinus yunnanensis plantation, showing no significant difference, both in non-karst and karst areas. The microbial communities in the non-karst area were more efficient in utilizing carbon substrates than those in the karst area with the same vegetation types, resulting in the higher accumulation of organic carbon in the karst area. The six categories of most frequently utilized carbon substrates were carbohydrates, carboxylic acids, and amino acids in both the non-karst and the karst areas. The soil basal respiration of the secondary forest was higher than that of the Pinus yunnanensis plantation, both in the non-karst and the karst areas. In addition, the driving factors of the soil microbial community functional diversity in the non-karst and karst areas are different. Our findings suggest that soil microbial functional diversity is governed by vegetation types as well as by soil properties in subtropical forests. Moreover, calcareous soil holds a higher proportion of recalcitrant organic carbon, which is difficult to utilize by microorganisms.

scholarly journals Microbial Carbon Metabolic Functions in Sediments Influenced by Resuspension Event

Water ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 7
Author(s):  
Miao Wu ◽  
Ming Zhang ◽  
Wei Ding ◽  
Lin Lan ◽  
Zhilin Liu ◽  
...  
Keyword(s):  
Carbon Cycle ◽  
Microbial Communities ◽  
Carbon Metabolism ◽  
Sediment Resuspension ◽  
Carbon Sources ◽  
Total Carbon ◽  
Control Group ◽  
Functional Activities ◽  
Microbial Utilization ◽  
Microbial Carbon

Microorganisms in sediments are an important part of the aquatic ecosystem, and their functional activities are sensitive to external environmental pressure. Shallow lakes are characterized by frequent sediment resuspension events, leading to large amounts of nutrients being released. However, information about the potential impacts of sediment resuspension events on the functional activities of microbial communities is limited. In this study, the responses of microbial carbon metabolism in sediments under different wind–wave disturbance were analyzed by BIOLOG ECO microplates. The results showed that under four disturbance conditions (wind speeds of 0, 1.60, 3.62, and 14.10 m/s), the total carbon metabolism function of the sediment microbial community (represented as average well-color development, AWCD) remained unchanged (p > 0.05), and the final total AWCD value stabilized at about 1.70. However, compared with the control group, some specific carbon sources (e.g., amines and carboxylic acids) showed significant changes (p < 0.05). We found that short-term (8 h) resuspension events did not affect the total carbon metabolism of sediment microbial communities, while it affected the microbial utilization ability of some specific types of carbon sources. For example, we found that the microbial utilization capacity of polymers in the 14.10 m/s group was the best. This study provides a new insight into the carbon cycle process of shallow lake sediments that resuspension events will affect the carbon cycle process of sediments.

Diversity in Microbial Carbon Metabolism of the Oil Shale at the Western Open Group in Fushun Basin

2013 ◽  
Vol 864-867 ◽  
pp. 140-144
Author(s):  
Shao Yan Jiang ◽  
Wen Xing Wang ◽  
Xiang Xin Xue
Keyword(s):  
Amino Acids ◽  
Functional Diversity ◽  
Carbon Metabolism ◽  
Oil Shale ◽  
Diversity Index ◽  
Carbon Sources ◽  
Acid Metabolite ◽  
Different Types ◽  
Microbial Carbon ◽  
Better Than

The oil shale in the Western Fushun Basin as research object was investigated by Biolog-ECO to explore the functional diversity in microbial carbon metabolism of the oil shale. The process of Biolog-ECO was that, first determining the microbial community level physiological patterns during the 7 consecutive days by ECO microplate, then analyzing the differences in microbial metabolism of different types of carbon. The results showed that there were significant differences of the rate and extent in different types of carbon metabolism. The metabolism of carbohydrates, amino acids and amines carbon were significantly better than other carbon sources in all microbial communities, while the metabolism of acid metabolite was poor. Through continuous multi-point measuring the diversity index of Shannon-wiener, Simpson and McIntosh, overall, the microbial diversity was good, but with the time passing, the functional diversity of the carbon metabolism decreased.

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