Results 111 to 120 of about 408,792 (381)

Global Escherichia coli Sequence Type 131 Clade with blaCTX-M-27 Gene

open access: yesEmerging Infectious Diseases, 2016
Increased extended-spectrum β-lactamase–producing E. coli in Japan resulted mainly from a clade containing this gene.
Y. Matsumura   +13 more
semanticscholar   +1 more source

Subgenome Partitioning and Polyploid Genome Evolution in the Loach Family Botiidae (Order Cypriniformes)

open access: yesAdvanced Science, EarlyView.
This study investigates subgenome evolution and polyploidy in Cypriniformes fish, revealing complex phylogenetic relationships and genomic dynamics. By applying advanced subgenome partitioning methods, it uncovers novel insights into transposon activity and gene fractionation.
Yunyun Lv   +14 more
wiley   +1 more source

DNA barcode approaches to reveal interspecies genetic variation of Indian ungulates

open access: yesMitochondrial DNA. Part B. Resources, 2020
In the past two decades, identification of species from noninvasive sampling has turned out to be an important tool for wildlife conservation. In this study a total 93 specimens representing 22 species of ungulates were analyzed from partial sequences of
Ranjana Bhaskar   +2 more
doaj   +1 more source

Symbiont diversity is not involved in depth acclimation in the Mediterranean sea whip Eunicella singularis [PDF]

open access: yes, 2011
In symbiotic cnidarians, acclimation to depth and lower irradiance can involve physiological changes in the photosynthetic dinoflagellate endosymbiont, such as increased chlorophyll content, or qualitative modifications in the symbiont population in ...
Allemand, D.   +7 more
core   +2 more sources

Manipulating Unisexual–Sexual Reproduction Transition to Engineer Genome‐Reconstructed Polyploids

open access: yesAdvanced Science, EarlyView.
This study developed an efficient approach to generate genome‐reconstructed polyploids involving unisexual gynogenetic Carassius gibelio, sexual C. auratus, and sexual C. cuvieri. The selected superior clone inherited gynogenesis ability of C. gibelio and herpesvirus resistance of wild C.
Meng Lu   +9 more
wiley   +1 more source

A scenario of co-evolution between badnaviruses and Musa sp.. [P.22] [PDF]

open access: yes, 2015
The banana streak disease is due to a complex of distinct Banana streak viruses (BSVs) species showing a wide genetic diversity. Banana streak viruses (BSVs) are double stranded DNA pararetroviruses belonging to the family Caulimoviridae, genus ...
Caruana, Marie-Line   +5 more
core  

Origin and evolution of the slime molds (Mycetozoa) [PDF]

open access: yes, 1997
The Mycetozoa include the cellular (dictyostelid), acellular (myxogastrid), and protostelid slime molds. However, available molecular data are in disagreement on both the monophyly and phylogenetic position of the group.
Baldauf, S.L., Doolittle, W.F.
core   +2 more sources

Quorum Sensing Inhibits Type III‐A CRISPR‐Cas System Activity Through Repressing Positive Regulators SarA and ArcR in Staphylococcus Aureus

open access: yesAdvanced Science, EarlyView.
This study proposes a novel model illustrating how quorum sensing (QS) regulates the type III‐A CRISPR‐Cas system in Staphylococcus aureus. The QS regulator AgrA suppresses CRISPR‐Cas activity by downregulating the transcriptional regulators SarA and ArcR.
Yang Li   +6 more
wiley   +1 more source

Highly diverse nirK genes comprise two major clades that harbour ammonium-producing denitrifiers [PDF]

open access: yes, 2016
Background: Copper dependent nitrite reductase, NirK, catalyses the key step in denitrification, i.e. nitrite reduction to nitric oxide. Distinct structural NirK classes and phylogenetic clades of NirK-type denitrifiers have previously been observed ...
Decleyre, Helen   +3 more
core   +3 more sources

Grass functional traits reflect the long history of fire and grazers in the savannas of Texas

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise Understanding relationships among grass traits, fire, and herbivores may help improve conservation strategies for savannas that are threatened by novel disturbance regimes. Emerging theory, developed in Africa, emphasizes that functional traits of savanna grasses reflect the distinct ways that fire and grazers consume biomass ...
Ashish N. Nerlekar   +2 more
wiley   +1 more source

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