Self-immobilized biochar fungal pellet combined with bacterial strain H29 enhanced the removal performance of cadmium and nitrate

2021 ◽  
Vol 341 ◽  
pp. 125803
Author(s):  
Zhijie Zheng ◽  
Amjad Ali ◽  
Junfeng Su ◽  
Shuai Zhang ◽  
Yuanyuan Fan ◽  
...  
Keyword(s):  
Bacterial Strain

scholarly journals Bacterial strain for bast fiber crops degumming and its bio-degumming technique

2021 ◽  
Author(s):  
Shengwen Duan ◽  
Bingrong Xu ◽  
Lifeng Cheng ◽  
Xiangyuan Feng ◽  
Qi Yang ◽  
...  
Keyword(s):  
Bacterial Strain ◽  
Bast Fiber

scholarly journals A diet high in sugar and fat influences neurotransmitter metabolism and then affects brain function by altering the gut microbiota

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yinrui Guo ◽  
Xiangxiang Zhu ◽  
Miao Zeng ◽  
Longkai Qi ◽  
Xiaocui Tang ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Bacterial Strain ◽  
Brain Function ◽  
Intestinal Tract ◽  
High Fat ◽  
Indirect Methods ◽  
Neurotransmitter Secretion ◽  
Direct And Indirect Methods ◽  
Neurotransmitter Metabolism ◽  
Host Brain

AbstractGut microbiota (GM) metabolites can modulate the physiology of the host brain through the gut–brain axis. We wished to discover connections between the GM, neurotransmitters, and brain function using direct and indirect methods. A diet with increased amounts of sugar and fat (high-sugar and high-fat (HSHF) diet) was employed to disturb the host GM. Then, we monitored the effect on pathology, neurotransmitter metabolism, transcription, and brain circularRNAs (circRNAs) profiles in mice. Administration of a HSHF diet-induced dysbacteriosis, damaged the intestinal tract, changed the neurotransmitter metabolism in the intestine and brain, and then caused changes in brain function and circRNA profiles. The GM byproduct trimethylamine-n-oxide could degrade some circRNAs. The basal level of the GM decided the conversion rate of choline to trimethylamine-n-oxide. A change in the abundance of a single bacterial strain could influence neurotransmitter secretion. These findings suggest that a new link between metabolism, brain circRNAs, and GM. Our data could enlarge the “microbiome–transcriptome” linkage library and provide more information on the gut–brain axis. Hence, our findings could provide more information on the interplay between the gut and brain to aid the identification of potential therapeutic markers and mechanistic solutions to complex problems encountered in studies of pathology, toxicology, diet, and nutrition development.

scholarly journals Alleviation of Salt Stress in Wheat Seedlings via Multifunctional Bacillus aryabhattai PM34: An In-Vitro Study

2021 ◽  
Vol 13 (14) ◽  
pp. 8030
Author(s):  
Shehzad Mehmood ◽  
Amir Abdullah Khan ◽  
Fuchen Shi ◽  
Muhammad Tahir ◽  
Tariq Sultan ◽  
...  
Keyword(s):  
Salt Stress ◽  
Plant Growth ◽  
Stress Tolerance ◽  
Bacterial Strain ◽  
Acc Deaminase ◽  
Wheat Growth ◽  
Wheat Seedlings ◽  
Pgp Traits ◽  
Bacillus Aryabhattai

Plant growth-promoting rhizobacteria play a substantial role in plant growth and development under biotic and abiotic stress conditions. However, understanding about the functional role of rhizobacterial strains for wheat growth under salt stress remains largely unknown. Here we investigated the antagonistic bacterial strain Bacillus aryabhattai PM34 inhabiting ACC deaminase and exopolysaccharide producing ability to ameliorate salinity stress in wheat seedlings under in vitro conditions. The strain PM34 was isolated from the potato rhizosphere and screened for different PGP traits comprising nitrogen fixation, potassium, zinc solubilization, indole acetic acid, siderophore, and ammonia production, along with various extracellular enzyme activities. The strain PM34 showed significant tolerance towards both abiotic stresses including salt stress (NaCl 2 M), heavy metal (nickel, 100 ppm, and cadmium, 300 ppm), heat stress (60 °C), and biotic stress through mycelial inhibition of Rhizoctonia solani (43%) and Fusarium solani (41%). The PCR detection of ituC, nifH, and acds genes coding for iturin, nitrogenase, and ACC deaminase enzyme indicated the potential of strain PM34 for plant growth promotion and stress tolerance. In the in vitro experiment, NaCl (2 M) decreased the wheat growth while the inoculation of strain PM34 enhanced the germination% (48%), root length (76%), shoot length (75%), fresh biomass (79%), and dry biomass (87%) over to un-inoculated control under 2M NaCl level. The results of experiments depicted the ability of antagonistic bacterial strain Bacillus aryabhattai PM34 to augment salt stress tolerance when inoculated to wheat plants under saline environment.

scholarly journals Effect of TiO2 on Selected Pathogenic and Opportunistic Intestinal Bacteria

2021 ◽  
Author(s):  
Ewa Baranowska-Wójcik ◽  
Dominik Szwajgier ◽  
Klaudia Gustaw
Keyword(s):  
Titanium Dioxide ◽  
Bacterial Strain ◽  
Intestinal Bacteria ◽  
Food Additive ◽  
Bacterial Strains ◽  
Gastrointestinal Microbiota ◽  
Food Grade ◽  
The Eu

AbstractFood-grade titanium dioxide (TiO2) containing a nanoparticle fraction (TiO2 NPs-nanoparticles) is widely used as a food additive (E171 in the EU). In recent years, questions concerning its effect on the gastrointestinal microbiota have been raised. In the present study, we examined interactions between bacteria and TiO2. The study involved six pathogenic/opportunistic bacterial strains and four different-sized TiO2 types: three types of food-grade E171 compounds and TiO2 NPs (21 nm). Each bacterial strain was exposed to four concentrations of TiO2 (60, 150, 300, and 600 mg/L TiO2). The differences in the growth of the analyzed strains, caused by the type and concentration of TiO2, were observed. The growth of a majority of the strains was shown to be inhibited after exposure to 300 and 600 mg/L of the food-grade E171 and TiO2 NPs.

Optimization of Fermentation Conditions for Blue Pigment Production by Bacterial Strain T2013

2014 ◽  
Vol 1073-1076 ◽  
pp. 286-291
Author(s):  
Yong Zuo ◽  
Peng Jiang ◽  
Xiao Long Wang ◽  
Bin Fu ◽  
Xiao Long Yang ◽  
...  
Keyword(s):  
Bacterial Strain ◽  
Orthogonal Test ◽  
Blue Pigment ◽  
Liquid Volume ◽  
Initial Value ◽  
Fermentation Time ◽  
Fermentation Conditions ◽  
Inoculum Volume ◽  
Optimization Of Fermentation ◽  
Single Factor Experiment

The fermentation conditions of Bacterial Strain T2013 were studied. The fermentation conditions of T2013 were investigated with single-factor experiment. In addition to, the fermentation conditions were optimized through the orthogonal test. The results showed the highest production of blue pigment was obtained on condition that fermentation time was 2d, the liquid volume was 50ml in the 250ml shake-flask, the inoculum volume was 2%, the initial value of pH was 7.6, fermentation temperature was 37°C and the speed was 150r/min.The fermentation conditions of Bacterial Strain T2013 were preliminarily determined,whichprovides a theoretical basis for the industrial production of blue pigment.

Screening of Antagonistic Bacterium to Control Konjac Soft Rot

2013 ◽  
Vol 726-731 ◽  
pp. 4427-4430
Author(s):  
Guo Hua Chen
Keyword(s):  
Bacterial Strain ◽  
Bacterial Pathogen ◽  
Erwinia Carotovora ◽  
Soft Rot ◽  
Field Trials ◽  
Antagonistic Effect ◽  
Soil Samples ◽  
Plate Method ◽  
Antagonistic Bacterium

Konjac soft rot is a bottleneck limiting konjac yield caused by bacterial strain of Erwinia carotovora var. carotovora. In order to control konjac soft rot, soil samples were collected, and each sample was spread on surface of a plate seeded with E. carotovora var. carotovora in advance. Strains expressing antagonistic activities were selected and then isolated with streak plate method. One bacterial strain (named Z10) was obtained from soil by this method. In field trials, strain Z10 still showed antagonistic effect against the bacterial pathogen.

Genetics of symbiosis and nitrogen fixation in legumes

1969 ◽  
Vol 172 (1029) ◽  
pp. 417-437 ◽  
Keyword(s):  
Nitrogen Fixation ◽  
Bacterial Strain ◽  
Host Plants ◽  
Strain Differences ◽  
Homogeneous Material ◽  
Developmental Sequence ◽  
Bacterial Strains ◽  
Nodule Bacteria ◽  
Microbial Genetics ◽  
Nodular Tissue

Soon after the isolation of nodule bacteria in 1888, differences were recognized in the ability of bacterial strains to form nodules on particular host plants and in the nitrogen-fixing ability of the nodules so formed. These and other symbiotic heterogeneities were attributed, sometimes correctly, to bacterial strain differences, not then thought to be open to formal genetic analysis. The realization that the host plant was an essential component of this variability came only gradually, stimulated by observations of host varietal differences and by the demand for reliable and homogeneous material for experimental work. Only within the last two decades has host variability been studied by plant breeding, and bacterial strain differences by some of the methods of microbial genetics. This review, except for a brief reference to earlier work of some historic interest, will consider only genetic problems open to investigation by these methods. The developmental sequence in all legume nodules is broadly similar. The initial infection phases are followed by the induction of the nodule, the invasion of part of the nodular tissue and culminate in bacteroid formation and nitrogen fixation; the genetics of symbiosis will be considered in this context.

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