Results 51 to 60 of about 4,875 (155)

In vitro Antagonistic Activity, Plant Growth Promoting Traits and Phylogenetic Affiliation of Rhizobacteria Associated with Wild Plants Grown in Arid Soil

Frontiers in Microbiology, 2014
The role of plant growth-promoting rhizobacteria (PGPR) in adaptation of plants in extreme environments is not yet completely understood. For this study native bacteria were isolated from rhizospeheric arid soils and evaluated for both growth-promoting ...
Wael Samir El-Sayed, Wael Samir El-Sayed, Abdellah eAkhkha, Moustafa eEl-Naggar, Medhat eElbadry   +4 more
doaj   +1 more source

Phylogenetic relationships in Betula (Betulaceae) based on AFLP markers [PDF]

, 2008
The genus Betula comprises various species in boreal and temperate climate zones of the Northern Hemisphere. The taxonomy of Betula is controversial and complicated by parallel evolution of morphological traits, polyploidization events, and extensive ...
Gilissen, L.J.W.J., Koopman, W.J.M., Schenk, M.F., Smulders, M.J.M., Thienpont, C.N.   +4 more
core   +2 more sources

Defining the pyro‐thermal niche: do seed traits, ecosystem type and phylogeny influence thermal thresholds in seeds with physical dormancy?

New Phytologist, Volume 246, Issue 4, Page 1567-1582, May 2025.
Summary Seeds are a key pathway for plant population recovery following disturbance. To prevent germination during unsuitable conditions, most species produce dormant seeds. In fire‐prone regions, physical dormancy (PY) enables seeds to germinate after fire. The pyro‐thermal niche, incorporating temperature effects into seed dormancy and mortality, has
Ryan Tangney, Sarah J. McInnes, Emma L. Dalziell, William K. Cornwell, Ben P. Miller, Tony D. Auld, Mark K. J. Ooi   +6 more
wiley   +1 more source

Pattern-based phylogenetic distance estimation and tree reconstruction [PDF]

, 2006
We have developed an alignment-free method that calculates phylogenetic distances using a maximum likelihood approach for a model of sequence change on patterns that are discovered in unaligned sequences.
Höhl, Michael, Ragan, Mark A., Rigoutsos, Isidore   +2 more
core   +5 more sources

Sex‐Specific Ultraviolet Radiation Tolerance Across Drosophila

Ecology and Evolution, Volume 15, Issue 2, February 2025.
This study investigates the genetic basis of phenotypic differences between two species of Drosophila, D. santomea and D. yakuba, focusing on their adaptation to UV tolerance and stress. Genomic and empirical evidence shows that island populations of D.
James E. Titus‐McQuillan, Brandon A. Turner, Rebekah L. Rogers   +2 more
wiley   +1 more source

Introducing W.A.T.E.R.S.: a Workflow for the Alignment, Taxonomy, and Ecology of Ribosomal Sequences

BMC Bioinformatics, 2010
Background For more than two decades microbiologists have used a highly conserved microbial gene as a phylogenetic marker for bacteria and archaea. The small-subunit ribosomal RNA gene, also known as 16 S rRNA, is encoded by ribosomal DNA, 16 S rDNA, and
Ludäscher Bertram, McPhillips Timothy, Riddle Sean, Hartman Amber L, Eisen Jonathan A   +4 more
doaj   +1 more source

Longitudinal analysis of the skin microbiome in association with hand eczema, hand hygiene practices and moisturizer use

Journal of the European Academy of Dermatology and Venereology, Volume 38, Issue 11, Page 2118-2129, November 2024.
Abstract Background The skin microbiota maintains a physical and immunological barrier to the environment. Little is known about how the microbiome changes over time or the effect of hand hygiene practices and moisturizer use. Objectives To assess sex‐specific changes in skin bacteria over time, and how the microbiome is related to self‐reported hand ...
H. K. Vindenes, C. Drengenes, H. Amin, K. Irgens‐Hansen, C. Svanes, R. J. Bertelsen   +5 more
wiley   +1 more source

Evolution of naturally occurring 5'non-coding region variants of Hepatitis C virus in human populations of the South American region

Virology Journal, 2007
Background Hepatitis C virus (HCV) has been the subject of intense research and clinical investigation as its major role in human disease has emerged. Previous and recent studies have suggested a diversification of type 1 HCV in the South American region.
García-Aguirre Laura, Moreno María P, Schijman Alejandro G, Recarey Ricardo, López Lilia, López-Tort Fernando, Colina Rodney, González Katiuska, Gutiérrez María F, Martínez Mariela, Moratorio Gonzalo, Manascero Aura R, Cristina Juan   +12 more
doaj   +1 more source

Imprints of land use history and disturbance regime in phylogenetic diversity of Mediterranean plant communities

Ecosphere, Volume 15, Issue 8, August 2024.
Abstract Mediterranean landscapes were drastically affected by high levels of abandonment of agricultural and other land practices during the last century. These changes in land use can have significant effects on diversity patterns by altering disturbance and competition equilibria within plant communities at the landscape level.
Anna Mastrogianni, Diogenis A. Kiziridis, Magdalini Pleniou, Fotios Xystrakis, Spyros Tsiftsis, Ioannis Tsiripidis   +5 more
wiley   +1 more source

A Note on Encodings of Phylogenetic Networks of Bounded Level [PDF]

, 2009
Driven by the need for better models that allow one to shed light into the question how life's diversity has evolved, phylogenetic networks have now joined phylogenetic trees in the center of phylogenetics research. Like phylogenetic trees, such networks
A Batbedat, AWM Dress, BME Moret, BR Holland, C Choy, C Semple, C Semple, D Bryant, DH Huson, F Rosselló, G Cardona, G Cardona, G Cardona, HJ Bandelt, HJ Bandelt, HL Chan, IA Kanj, J Jansson, J Jansson, JP Barthélémy, Katharina T. Huber, L Iersel van, L Iersel van, M Arenas, M Fellows, Philippe Gambette, S Grünewald, SJ Willson, SJ Willson, V Moulton, YS Song   +30 more
core   +4 more sources