scholarly journals PSX-33 Effects of cellulase-producing microorganisms isolated from silkworm (Bombyx mori) on growth performance and gut microbial community composition of weaned piglets.

2018 ◽  
Vol 96 (suppl_3) ◽  
pp. 488-488
Author(s):  
R Guevarra ◽  
S Lee ◽  
V Marimuthu ◽  
J Lee ◽  
S Kim ◽  
...  
2017 ◽  
Vol 3 (1) ◽  
pp. 8-16 ◽  
Author(s):  
Paul I. Costea ◽  
Falk Hildebrand ◽  
Manimozhiyan Arumugam ◽  
Fredrik Bäckhed ◽  
Martin J. Blaser ◽  
...  

2018 ◽  
Vol 3 (3) ◽  
pp. 388-388 ◽  
Author(s):  
Paul I. Costea ◽  
Falk Hildebrand ◽  
Manimozhiyan Arumugam ◽  
Fredrik Bäckhed ◽  
Martin J. Blaser ◽  
...  

2007 ◽  
Vol 74 (3) ◽  
pp. 783-791 ◽  
Author(s):  
Valeria A. Torok ◽  
Kathy Ophel-Keller ◽  
Maylene Loo ◽  
Robert J. Hughes

ABSTRACT A high-throughput microbial profiling tool based on terminal restriction fragment length polymorphism was developed to monitor the poultry gut microbiota in response to dietary manipulations. Gut microbial communities from the duodena, jejuna, ilea, and ceca of 48 birds fed either a barley control diet or barley diet supplemented with exogenous enzymes for degrading nonstarch polysaccharide were characterized by using multivariate statistical methods. Analysis of samples showed that gut microbial communities varied significantly among gut sections, except between the duodenum and jejunum. Significant diet-associated differences in gut microbial communities were detected within the ileum and cecum only. The dissimilarity in bacterial community composition between diets was 73 and 66% within the ileum and cecum, respectively. Operational taxonomic units, representing bacterial species or taxonomically related groups, contributing to diet-associated differences were identified. Several bacterial species contributed to differences between diet-related gut microbial community composition, with no individual bacterial species contributing more than 1 to 5% of the total. Using canonical analysis of principal coordinates biplots, we correlated differences in gut microbial community composition within the ileum and cecum to improved performance, as measured by apparent metabolizable energy. This is the first report that directly links differences in the composition of the gut microbial community with improved performance, which implies that the presence of specific beneficial and/or absence of specific detrimental bacterial species may contribute to the improved performance in these birds.


2013 ◽  
Vol 1 (1) ◽  
Author(s):  
Katherine R. Amato

AbstractBecause the gut microbiota contributes to host nutrition, health and behavior, and gut microbial community composition differs according to host phylogeny, co-evolution is believed to have been an important mechanism in the formation of the host-gut microbe relationship. However, current research is not ideal for examining this theme. Most studies of the gut microbiota are performed in controlled settings, but gut microbial community composition is strongly influenced by environmental factors. To truly explore the co-evolution of host and microbe, it is necessary to have data describing host-microbe dynamics in natural environments with variation in factors such as climate, food availability, disease prevalence, and host behavior. In this review, I use current knowledge of host-gut microbe dynamics to explore the potential interactions between host and microbe in natural habitats. These interactions include the influence of host habitat on gut microbial community composition as well as the impacts of the gut microbiota on host fitness in a given habitat. Based on what we currently know, the potential connections between host habitat, the gut microbiota, and host fitness are great. Studies of wild animals will be an essential next step to test these connections and to advance our understanding of host-gut microbe co-evolution.


2020 ◽  
Vol 36 (4) ◽  
pp. 1231-1240
Author(s):  
Jiashen Tian ◽  
Jing Du ◽  
Jiabo Han ◽  
Xinran Song ◽  
Zhichuang Lu

2020 ◽  
Author(s):  
Lidiane Figueiredo dos Santos ◽  
Julie Fernandes Souta ◽  
Cleiton de Paula Soares ◽  
Letícia Oliveira da Rocha ◽  
Maria Luiza Carvalho Santos ◽  
...  

ABSTRACTSeed germination events modulate microbial community composition, which ultimately influences seed to seedling growth performance. Here we assess the seed-borne bacteria community in disinfected and non-disinfected maize seeds and seedlings. Using a gnotobiotic system, sodium hypochlorite (1.25%, 30 min) treated-seeds showed a reduction of bacteria population size and an increase of bacteria community diversity associated with selective suppression of Burkholderia related taxon. The shift in the bacteria community composition in disinfested-seeds negatively affects germination speed, seedling growth, and reserve mobilization rates in comparison with non-disinfected maize seeds. A synthetic bacteria community formed by twelve isolates (9 Burkholderia spp.; 2 Bacillus spp. and 1 Staphylococcus sp.) obtained from natural microbiota of maize seeds herein were capable of recovering germination and seedling growth when reintroduced in disinfected seeds. Overall results showed that changes in bacterial community composition and selective reduction of Burkholderia related members dominance interfere with germination events and initial growth of the maize plantlets. By cultivation-dependent and independent approaches, we deciphered seed-maize microbiome structure, bacterial niches location, and bacterial taxon with relevant roles in seedlings growth performance. A causal relationship between seed microbial community succession and germination performance open opportunities in seed technologies to build-up microbial communities to boost plant growth and health.One sentence summarypartial removal of the seed-borne microbiota negatively affects maize seedling growth performance and altered bacteria community structure. Partial microbial recomposition, mainly with Burkholderia-related isolates, restores the germination phenotype of disinfested seeds.


Author(s):  
Lidiane Figueiredo dos Santos ◽  
Julie Fernandes Souta ◽  
Cleiton de Paula Soares ◽  
Letícia Oliveira da Rocha ◽  
Maria Luiza Carvalho Santos ◽  
...  

Abstract Seed germination events modulate microbial community composition, which ultimately influences seed to seedling growth performance. Here we evaluate the germinated maize (variety SHS 5050) root bacterial community of disinfected seed (DS) and non-disinfected seed (NDS). Using a gnotobiotic system, sodium hypochlorite (1.25%, 30 min) treated seeds showed a reduction of bacterial population size and an apparent increase of bacterial community diversity associated with a significant selective reduction of Burkholderia related sequences. The shift in the bacterial community composition in DS negatively affects germination speed, seedling growth, and reserve mobilization rates compared with NDS. A synthetic bacterial community (syncom) formed by twelve isolates (9 Burkholderia spp.; 2 Bacillus spp. and 1 Staphylococcus sp.) obtained from natural microbiota maize seeds herein were capable of recovering germination and seedling growth when reintroduced in DS. Overall results showed that changes in bacterial community composition and selective reduction of Burkholderia related members dominance interfere with germination events and initial growth of the maize plantlets. By cultivation-dependent and independent approaches, we deciphered seed-maize microbiome structure, bacterial niches location, and bacterial taxa with relevant roles in seedlings growth performance. A causal relationship between seed microbial community succession and germination performance open opportunities in seed technologies to build-up microbial communities to boost plant growth and health.


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