scholarly journals Could bacterial associations determine the success of weevil species?

2020 ◽  
Vol 178 (1) ◽  
pp. 51-61 ◽  
Author(s):  
Pilar Morera‐Margarit ◽  
Tom W. Pope ◽  
Carolyn Mitchell ◽  
Alison J. Karley
Keyword(s):  
Weevil Species ◽  
Bacterial Associations

Selective pressure of biphenyl/polychlorinated biphenyls on the formation of aerobic bacterial associations and their biodegradative potential

2021 ◽  
Author(s):  
Darya Egorova ◽  
Tatyana Kir’yanova ◽  
Anna Pyankova ◽  
Ludmila Anan’ina ◽  
Elena Plotnikova
Keyword(s):  
Polychlorinated Biphenyls ◽  
Selective Pressure ◽  
Bacterial Associations

scholarly journals Nasopharyngeal bacterial carriage in young children in Greenland: a population at high risk of respiratory infections

2016 ◽  
Vol 144 (15) ◽  
pp. 3226-3236 ◽  
Author(s):  
J. E. NAVNE ◽  
M. L. BØRRESEN ◽  
H. C. SLOTVED ◽  
M. ANDERSSON ◽  
M. MELBYE ◽  
...  
Keyword(s):  
Risk Factors ◽  
Staphylococcus Aureus ◽  
Moraxella Catarrhalis ◽  
Respiratory Infections ◽  
Positive Association ◽  
Population Based ◽  
Carriage Rate ◽  
Population Based Study ◽  
Pneumococcal Carriage ◽  
Bacterial Associations

SUMMARYThe incidence of childhood respiratory infections in Greenland is among the highest globally. We performed a population-based study of 352 Greenlandic children aged 0–6 years aiming to describe rates and risk factors for carriage of four key bacteria associated with respiratory infections, their antimicrobial susceptibility and inter-bacterial associations. Nasopharyngeal swabs were tested for Streptococcus pneumoniae grouped by serotypes included (VT) or not included (NVT) in the 13-valent pneumococcal conjugate vaccine, non-typable Haemophilus influenzae (NTHi), Staphylococcus aureus and Moraxella catarrhalis. S. pneumoniae was detected from age 2 weeks with a peak carriage rate of 60% in 2-year-olds. Young age and having siblings attending a daycare institution were associated with pneumococcal carriage. Overall co-colonization with ⩾2 of the studied bacteria was 52%. NTHi showed a positive association with NVT pneumococci and M. catarrhalis, respectively, M. catarrhalis was positively associated with S. pneumoniae, particular VT pneumococci, whereas S. aureus were negatively associated with NTHi and M. catarrhalis. Nasopharyngeal bacterial carriage was present unusually early in life and with frequent co-colonization. Domestic crowding increased odds of carriage. Due to important bacterial associations we suggest future surveillance of pneumococcal conjugate vaccine's impact on carriage in Greenland to also include other pathogens.

Comparative ultrastructural analysis of mycorrhizal associations

1983 ◽  
Vol 61 (3) ◽  
pp. 917-943 ◽  
Author(s):  
Silvano Scannerini ◽  
Paola Bonfante-Fasolo
Keyword(s):  
Electron Microscopy ◽  
Surface Area ◽  
Ultrastructural Analysis ◽  
Nutrient Transfer ◽  
Cytological Feature ◽  
Symbiotic Interactions ◽  
Mycorrhizal Associations ◽  
Host Pathogen ◽  
Bacterial Associations ◽  
Functional Mechanisms

Electron microscopy is a powerful tool in understanding functional mechanisms in symbiosis (i.e., recognition and transfer of nutrients between partners), but mycorrhizal associations are not yet so well known as host–pathogen and host – mutualistic bacterial associations. However, the study of mycorrhizal ultrastructure has provided some interesting information. In fact unknown symbionts can be recognized with electron microscopy and mycorrhizae can be classified according to a sequence linking intercellular and intracellular interactions between host and fungus. General conclusions can be drawn from this ultrastructural sequence. (i) The most significant cytological feature in mycorrhizae is the presence of an interface through which partners communicate along a vast surface area. This is the key area for symbiotic interactions (both recognition and nutrient transfer) and can vary a great deal mostly in intracellular interactions. (ii) The ultracytochemical aspects of those interfaces, mostly as regards the components of the interfacial matrix, appear quite different from those of host–pathogen associations and suggest a compatibility mechanism. (iii) As regards the transfer of nutrients, even though it has been claimed that transfer of nutrient in all intracellular interactions is achieved by a digestion mechanism of the fungus by the host, available ultrastructural data are not consistent with this hypothesis.

Positive and Negative Bacterial Associations Involving Dialister pneumosintes in Primary Endodontic Infections

2003 ◽  
Vol 29 (7) ◽  
pp. 438-441 ◽  
Author(s):  
J SIQUEIRAJR ◽  
I ROCAS
Keyword(s):  
Bacterial Associations ◽  
Endodontic Infections

scholarly journals Acute non-atopic late-onset asthma induced by respiratory infection

2005 ◽  
pp. 53-57
Author(s):  
S. A. Sobchenko ◽  
O. S. Schetchikova ◽  
N. V. Yakovleva
Keyword(s):  
Respiratory Infection ◽  
Influenza A ◽  
Viral Infections ◽  
Late Onset ◽  
Lavage Fluid ◽  
Atopic Asthma ◽  
Influenza A Viruses ◽  
Asthma Patients ◽  
Bacterial Associations ◽  
Autumn And Winter

The aim of the study was to investigate features of respiratory infection inducing acute non-atopic late-onset asthma (NLA). Virologic and microbiologic examinations of brash biopsy samples of rhinopharyngeal and bronchial mucosa and bronchial lavage fluid were performed in 116 NLA patients admitted to a hospital in autumn and winter. The leading cause of acute NLA was found to be respiratory viral infections. We noted that different clinical NLA types had different sensibility to various viruses: adenoviruses mainly caused exacerbations of aspirin-induced asthma, respiratory syncytial and influenza A viruses were prevalently determined in non-atopic asthma. Patients with posttuberculotic lesions of the lungs mostly had viral and bacterial associations. Such mixed infection resulted in more severe and prolonged exacerbations of NLA.

Bacterial Associations With Plants: Beneficial, Non N-Fixing Interactions

2006 ◽  
pp. 79-103
Author(s):  
Berndt Gerhardson ◽  
Sandra Wright
Keyword(s):  
Bacterial Associations
Sign in / Sign up

Export Citation Format

Share Document