Less abundant bacterial groups are more affected than the most abundant groups in composted tannery sludge-treated soil

ABSTRACT: This study evaluated the responses of lima bean (Phaseolus lunatus L.) to application of composted tannery sludge on nodulation, N uptake and plant growth. For eight years, the compost was applied at rates of: 0, 2.5, 5, 10, and 20 Mg ha-1 (dry basis). Plants of lima bean showed higher nodulation in treatments with compost; however, nodules reported in these treatments presented lower biomass, size and diversity than those reported in treatment without compost. Accumulation of N increased with the application of the highest rate (20 Mg ha-1), while there was an increase in chromium content in shoot with the increase in compost rates. Thus, the use of composted tannery sludge, in long-term, increases the accumulation of chromium in plants, increasing nodulation, while decrease rhizobia diversity in nodules.

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1305 - Spreading of multi drug resistant bacterial groups originated from animal husbandry into environments evaluated by the method based on MPN/MERFLP.

10.26226/morressier.5b5199c2b1b87b000ecee357 ◽

2018 ◽

Author(s):

Katsuji Watanabe

Keyword(s):

Animal Husbandry ◽

Drug Resistant ◽

Bacterial Groups

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Influence of Dietary Neosugar on Selected Bacterial Groups of the Human Faecal Microbiota

Microbial Ecology in Health and Disease ◽

10.3402/mehd.v7i2.8163 ◽

1994 ◽

Vol 7 (2) ◽

Author(s):

C. H. Williams ◽

S. A. Witherly ◽

R. K. Buddington

Keyword(s):

Faecal Microbiota ◽

Bacterial Groups

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The effects of food restriction on some biochemical parameters and certain bacterial groups in the cecum in Sprague Dawley rats

Microbial Ecology in Health and Disease ◽

10.3402/mehd.v19i1.7674 ◽

2007 ◽

Vol 19 (1) ◽

Author(s):

Hümeyra ünsal ◽

ülker Çötelioglu

Keyword(s):

Biochemical Parameters ◽

Food Restriction ◽

Sprague Dawley ◽

Sprague Dawley Rats ◽

Bacterial Groups

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A Bacterial Tower of Babel: Quorum-Sensing Signaling Diversity and Its Evolution

Annual Review of Microbiology ◽

10.1146/annurev-micro-012220-063740 ◽

2020 ◽

Vol 74 (1) ◽

pp. 587-606 ◽

Cited By ~ 1

Author(s):

Nitzan Aframian ◽

Avigdor Eldar

Keyword(s):

Quorum Sensing ◽

Social Interactions ◽

Signal Molecules ◽

Allelic Polymorphism ◽

Dependent Manner ◽

Tower Of Babel ◽

Cognate Receptor ◽

Wide Range ◽

Family Code ◽

Bacterial Groups

Quorum sensing is a process in which bacteria secrete and sense a diffusible molecule, thereby enabling bacterial groups to coordinate their behavior in a density-dependent manner. Quorum sensing has evolved multiple times independently, utilizing different molecular pathways and signaling molecules. A common theme among many quorum-sensing families is their wide range of signaling diversity—different variants within a family code for different signal molecules with a cognate receptor specific to each variant. This pattern of vast allelic polymorphism raises several questions—How do different signaling variants interact with one another? How is this diversity maintained? And how did it come to exist in the first place? Here we argue that social interactions between signaling variants can explain the emergence and persistence of signaling diversity throughout evolution. Finally, we extend the discussion to include cases where multiple diverse systems work in concert in a single bacterium.

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Mechanical Properties of Cement-Treated Soil Mixed with Cellulose Nanofibre

Applied Sciences ◽

10.3390/app11146425 ◽

2021 ◽

Vol 11 (14) ◽

pp. 6425

Author(s):

Hidenori Takahashi ◽

Shinya Omori ◽

Hideyuki Asada ◽

Hirofumi Fukawa ◽

Yusuke Gotoh ◽

...

Keyword(s):

Mechanical Properties ◽

Flexural Strength ◽

Geotechnical Engineering ◽

Strength Development ◽

Soft Ground ◽

Wood Cellulose ◽

Treated Soil ◽

Made In ◽

Cement Treatment

Cellulose nanofibre (CNF), a material composed of ultrafine fibres of wood cellulose fibrillated to nano-order level, is expected to be widely used because of its excellent properties. However, in the field of geotechnical engineering, almost no progress has been made in the development of techniques for using CNFs. The authors have focused on the use of CNF as an additive in cement treatment for soft ground, where cement is added to solidify the ground, because CNF can reduce the problems associated with cement-treated soil. This paper presents the results of a study on the method of mixing CNF, the strength and its variation obtained by adding CNF, and the change in permeability. CNF had the effect of mixing the cement evenly and reducing the variation in the strength of the treated soil. The CNF mixture increased the strength at the initial age but reduced the strength development in the long term. The addition of CNF also increased the flexural strength, although it hardly changed the permeability.

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