Results 81 to 90 of about 2,587,976 (352)

Adaptive Plasmid Evolution Results in Host-Range Expansion of a Broad-Host-Range Plasmid [PDF]

open access: yesGenetics, 2008
Abstract Little is known about the range of hosts in which broad-host-range (BHR) plasmids can persist in the absence of selection for plasmid-encoded traits, and whether this “long-term host range” can evolve over time. Previously, the BHR multidrug resistance plasmid pB10 was shown to be highly unstable in Stenotrophomonas maltophilia ...
Leen, De Gelder   +4 more
openaire   +2 more sources

Mechanisms of parasite‐mediated disruption of brain vessels

open access: yesFEBS Letters, EarlyView.
Parasites can affect the blood vessels of the brain, often causing serious neurological problems. This review explains how different parasites interact with and disrupt these vessels, what this means for brain health, and why these processes matter. Understanding these mechanisms may help us develop better ways to prevent or treat brain infections in ...
Leonor Loira   +3 more
wiley   +1 more source

Isolation and Characterization of Novel Lytic Bacteriophages Infecting Epidemic Carbapenem-Resistant Klebsiella pneumoniae Strains

open access: yesFrontiers in Microbiology, 2020
Carbapenem-resistant Klebsiella pneumoniae (CRKP) poses a significant clinical problem given the lack of therapeutic options available. Alternative antibacterial agents, such as bacteriophages, can be used as a valuable tool to treat the infections ...
Min Li   +18 more
doaj   +1 more source

Geographical distribution and aspects of the ecology of the hemiparasitic angiosperm Striga asiatica (L) Kuntze: A herbarium study [PDF]

open access: yes, 1997
Striga asiatica (Scrophulariaceae) is an obligate root hemiparasite of mainly C-4 grasses (including cereals). It is the most widespread of the 42 Striga species occurring in many semi-tropical, semi-arid regions of mainly the Old World.
Cochrane, V., Press, M.C.
core  

Spectral Decomposition of Broad-Line AGNs and Host Galaxies

open access: yes, 2005
Using an eigenspectrum decomposition technique, we separate the host galaxy from the broad line active galactic nucleus (AGN) in a set of 4666 spectra from the Sloan Digital Sky Survey (SDSS), from redshifts near zero up to about 0.75.
Berk, Daniel E. Vanden   +9 more
core   +1 more source

Ancient origin and maternal inheritance of blue cuckoo eggs [PDF]

open access: yes, 2016
Maternal inheritance via the female-specific W chromosome was long ago proposed as a potential solution to the evolutionary enigma of co-existing host-specific races (or 'gentes') in avian brood parasites.
Ekrem, Torbjørn   +10 more
core   +3 more sources

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo   +2 more
wiley   +1 more source

HOST RANGE OF Xanthomonas manihotis Starr

open access: yesAnnals of Tropical Research, 1980
Xanthomonas manihotis Starr infected four species of euphorbiaceous plants, namely: Manihot glaziovii Muell.- Arg., Manihot esculenta Crantz (variegated ornamental cassava), Euphorbia pulcherrima Willd., and Pedilanthus tithymaloides (L.) Poit.
Ofelia I. Dedal, MK Palomar, CM Napiere
doaj  

The host-range tdCE phenotype of Chandipura virus is determined by mutations in the polymerase gene [PDF]

open access: yes
The emerging arbovirus Chandipura virus (CV) has been implicated in epidemics of acute encephalitis in India with high mortality rates. The isolation of temperature-dependent host-range (tdCE) mutants, which are impaired in growth at 39 °C in chick ...
Easton, A. J. (Andrew J.)   +2 more
core   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

open access: yesFEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka   +11 more
wiley   +1 more source

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