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The aim of this research was to study the incidence of
antibiotic resistance in 56 Enterococcus strains isolated from dairy products. The identification of enterococci was detected by polymerase chain reaction (PCR) using specific
primers to E. faecalis, E. faecium, E. gallinarum and E.
casseliflavus, and antibiotic
resistance was tested by the disk diffusion
method. The most prevalent species was E.
faecium with a rate of 58.33%, followed by 27.77% E. faecalis, 11.11% E. casseliflavus and 2.7% E.
gallinarum. Distribution of resistance was found in different
species. All isolates were susceptible to chloramphenicol, ampicillin, imipenem
and amoxicillin/clavulanic acid. In addition, isolates resistant to
tetracyclin, nalidixic acid, amikacin, erythromycin, vancomycin and cephalothin
were detected. A total of 66.6% of E.
faecium and 58.3% of E. faecalis strain were resistant to multiple drugs. The van(A) gene was
Aims: Two genetically distinct clones of Phragmites
australis were used to investigate
the immediate response induced by
osmotic stress. The study aimed at elucidating if the response
time, the inhibition rate and the recovery from salinity stress vary between
these two genotypes. The experimental work was conducted at the laboratory of
the Institute of Bioscience, Aarhus University, Denmark. Methods: The
light-saturated photosynthetic rate (Pmax),
stomata conductance (gs)
and transpiration rate (E) were
measured over different periods of salt exposure (15, 70 and 240 minutes) and
at different salt concentrations (20 and 40 parts per thousand salinity). Important
findings: The osmotic stress induced stomata closure and reduction of Pmax and E for both clones. The clone-specific responses as measured through
physiological parameters were negatively