نتایج جستجو برای: bacterial diversity

تعداد نتایج: 382425  

Journal: :Journal of environmental sciences 2012
Ximei Zhang Xingguo Han

Nitrogen deposition has dramatically altered biodiversity and ecosystem functioning on the earth; however, its effects on soil bacterial community and the underlying mechanisms of these effects have not been thoroughly examined. Changes in ecosystems caused by nitrogen deposition have traditionally been attributed to increased nitrogen content. In fact, nitrogen deposition not only leads to inc...

Journal: :Gut 2006
T Kühbacher S J Ott U Helwig T Mimura F Rizzello B Kleessen P Gionchetti M Blaut M Campieri U R Fölsch M A Kamm S Schreiber

BACKGROUND The intestinal microbiota plays a critical role in the pathophysiology of pouchitis, a major complication after ileal pouch anal anastomosis in patients with ulcerative colitis. Recently, controlled trials have demonstrated that probiotics are effective in maintenance of remission in pouchitis patients. However, the mechanism by which therapy with probiotics works remains elusive. Th...

2017
Daria Rybakova Riccardo Mancinelli Mariann Wikström Ann-Sofie Birch-Jensen Joeke Postma Ralf-Udo Ehlers Simon Goertz Gabriele Berg

BACKGROUND Although the plant microbiome is crucial for plant health, little is known about the significance of the seed microbiome. Here, we studied indigenous bacterial communities associated with the seeds in different cultivars of oilseed rape and their interactions with symbiotic and pathogenic microorganisms. RESULTS We found a high bacterial diversity expressed by tight bacterial co-oc...

Journal: :Molecular ecology 2016
Laetitia G E Wilkins Luca Fumagalli Claus Wedekind

Recent studies found fish egg-specific bacterial communities that changed over the course of embryogenesis, suggesting an interaction between the developing host and its microbiota. Indeed, single-strain infections demonstrated that the virulence of opportunistic bacteria is influenced by environmental factors and host immune genes. However, the interplay between a fish embryo host and its micr...

2017
Arvind Kumar Lal Chand Rai

Soil quality is an important factor and maintained by inhabited microorganisms. Soil physicochemical characteristics determine indigenous microbial population and rice provides food security to major population of the world. Therefore, this study aimed to assess the impact of physicochemical variables on bacterial community composition and diversity in conventional paddy fields which could refl...

2013
Jörg Eberhard Nico Stumpp Fadi Ismail Ulrike Schnaidt Wieland Heuer Maximilian Pichlmaier Christian Kühn Axel Haverich Meike Stiesch

BACKGROUND To test the hypothesis that the oral cavity is a potential source for implantable pacemaker and cardioverter defibrillators infections, the bacterial diversity on explanted rhythm heart management devices was investigated and compared to the oral microbiome. METHODS A metagenomic approach was used to analyze the bacterial diversity on the surfaces of non-infected and infected pacem...

2010
Iván Alfaro

Data from 247 global software development teams were used to examine the impact of temporal dispersion and leadership roles on the relationship between nationality diversity and team performance. Nationality diversity was positively related to team performance when project leaders regularly coordinate and monitor team members’ activities, and acted as mentors and facilitator. However, when nati...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2008
Noah Fierer Micah Hamady Christian L Lauber Rob Knight

Bacteria thrive on and within the human body. One of the largest human-associated microbial habitats is the skin surface, which harbors large numbers of bacteria that can have important effects on health. We examined the palmar surfaces of the dominant and nondominant hands of 51 healthy young adult volunteers to characterize bacterial diversity on hands and to assess its variability within and...

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