نتایج جستجو برای: CO1

تعداد نتایج: 708  

1999

Whole!plant responses to elevated CO1 throughout the life cycle are needed to understand future impacts of elevated atmospheric CO1[ In this study\ Triticum aes! tivum L[ leaf carbon exchange rates "CER# and carbo! hydrates\ growth\ and development were examined at the tillering\ booting\ and grain!_lling stages in growth chambers with CO1 concentrations of 249 "ambient# or 699 "high# mmol mol[...

Journal: :Medical and veterinary entomology 2006
A Cywinska F F Hunter P D N Hebert

A short fragment of mt DNA from the cytochrome c oxidase 1 (CO1) region was used to provide the first CO1 barcodes for 37 species of Canadian mosquitoes (Diptera: Culicidae) from the provinces Ontario and New Brunswick. Sequence variation was analysed in a 617-bp fragment from the 5' end of the CO1 region. Sequences of each mosquito species formed barcode clusters with tight cohesion that were ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2007
Keith A Seifert Robert A Samson Jeremy R Dewaard Jos Houbraken C André Lévesque Jean-Marc Moncalvo Gerry Louis-Seize Paul D N Hebert

DNA barcoding systems employ a short, standardized gene region to identify species. A 648-bp segment of mitochondrial cytochrome c oxidase 1 (CO1) is the core barcode region for animals, but its utility has not been tested in fungi. This study began with an examination of patterns of sequence divergences in this gene region for 38 fungal taxa with full CO1 sequences. Because these results sugge...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1997
D C Wallace C Stugard D Murdock T Schurr M D Brown

Nuclear-localized mtDNA pseudogenes might explain a recent report describing a heteroplasmic mtDNA molecule containing five linked missense mutations dispersed over the contiguous mtDNA CO1 and CO2 genes in Alzheimer's disease (AD) patients. To test this hypothesis, we have used the PCR primers utilized in the original report to amplify CO1 and CO2 sequences from two independent rho degrees (mt...

2012
Chuan-Yu Hsu Joshua P. Adams Kyoungok No Haiying Liang Richard Meilan Olga Pechanova Abdelali Barakat John E. Carlson Grier P. Page Cetin Yuceer

CONSTANS (CO) is an important flowering-time gene in the photoperiodic flowering pathway of annual Arabidopsis thaliana in which overexpression of CO induces early flowering, whereas mutations in CO cause delayed flowering. The closest homologs of CO in woody perennial poplar (Populus spp.) are CO1 and CO2. A previous report showed that the CO2/FLOWERING LOCUS T1 (FT1) regulon controls the onse...

Journal: :Molecular ecology resources 2008
M Alex Smith Nikolai A Poyarkov Paul D N Hebert

Although a mitochondrial DNA barcode has been shown to be of great utility for species identification and discovery in an increasing number of diverse taxa, caution has been urged with its application to one of the most taxonomically diverse vertebrate groups - the amphibians. Here, we test three of the perceived shortcomings of a CO1 DNA barcode's utility with a group of Holarctic amphibians: ...

2017
Yuan Chen Shanyi Zhou

In this study, we sequenced fragments of cytochrome oxidase subunit 1 (CO1), internal transcribed spacer 1 (ITS1), and internal transcribed spacer 2 (ITS2) genes from 150 specimens belonging to 16 species of the ant genus Formica from China. Odontoponera transversa from Ponerinae and Polyergus samurai from Formicinae were added as distant relative and close relative outgroups, respectively. Nei...

2005
JOHN F. DUNCAN

We study a self-dual N = 1 super vertex operator algebra, denoted A, and prove that the full symmetry group is Conway’s largest sporadic simple group Co1. We verify a uniqueness result for A which is analogous to that conjectured to characterize the Moonshine vertex operator algebra V . The action of Co1 on A is sufficiently transparent that one can derive explicit expressions for the McKay-Tho...

Journal: : 2022

The synthesis and characterization of mononuclear Co(II) complex based on 3,5-dimethyl-4-amino-1H-pyrazole are reported. IR UV/Vis spectroscopy the described. synthesis, results IR, NMR elemental analysis also X-ray [Co(C5H9N3)2Cl2] reveals that cobalt atom has a tetrahedral coordination environment formed by two nitrogen atoms belonging to ligands [Co1–N1 = 2.005(3) Co1–N5 2.006(3)Å] chlorine ...

2004
Shinpei Fujii Shoji Ishida Setsuro Asano

To expand our knowledge of electronic structures and magnetic properties for ferromagnetic shape memory Co-Ni-Al alloys, which undergo a thermoelastic martensitic transformation from a B2 to an L10 structure, we have performed first-principles band calculations for the composition of Co:Ni:Al = 1:1:1, i.e., (Co1=3Ni2=3)(Co1=3Al2=3) and (Ni1=3Co2=3)(Ni1=3Al2=3). Their electronic structures have ...

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