Research Notes : United States : Partially sterile mutants in a genetically unstable line of soybean

Mutations for partial sterility were identified in an experiment designed to recover new mutations in the Asgrow Mutable line as evidence for transposition of a mobile genetic element (Groose and Palmer, 1987). The mutations were discovered in a field nursery that included 1697 F11 progeny rows of the Asgrow Mutable line. Mutant plants with reduced numbers of seeds per pod were first detected when the nursery was examined at maturity

Research Notes : United States : New mutations in a genetically unstable line of soybean

Most plants of the Asgrow Mutable line of soybean are chimeric for flow-er color (Groose and Palmer, 1986). Mutable plants produce both entirely near-white and entirely purple flowers, as well as flowers of mutable phenotype with purple sectors on near-white petals. This line carries an unstable recessive (\u27mutable\u27) allele of the w4 locus that conditions anthocyanin pigmentation (Weigelt et al., 1986)..pd

Research Notes : United States : Necrotic root mutants in a genetically unstable line of soybean

Mutations for necrotic roots were identified in an experiment designed to recover new mutations in the Asgrow Mutable line as evidence for transposition of a mobile genetic element (Groose and Palmer, 1987). Each of three independent mutations for necrotic roots was discovered in a different F11 family, each of which had descended from a different F9 plant of the Asgrow Mutable line. Seedlings of 1 936 F11 families were pulled from the sandbench at the second trifoliolate leaf stage and roots were examined for nonfluorescent root mutations

Research Notes : United States : Chlorophyll-deficient mutants in a genetically unstable line of soybean

Mutations for chlorophyll deficiency were identified in an experiment designed to -recover new mutations in the Asgrow Mutable line as evidence for transposition of a mobile genetic element. A detailed protocol for the experiment is presented in the preceding research note (Groose and Palmer, 1987). Each of three independent mutations that are described below was discovered in a sandbench test of a different F11 family, each of which had descended from a different F9 plant of the Asgrow Mutable line

Non Degenerate Dual Atomic Parametric Amplifier: Entangled Atomic Fields

In this paper, we investigate the dynamics of two coupled quantum degenerate atomic fields (BEC) interacting with two classical optical fields in the nonlinear atom optics regime. Two photon interaction produces entangled atom-atom pairs which exhibit nonclassical correlations. Since the system involves the creation of two correlated atom pairs, we call it the nondegenerate dual atomic parametric amplifier.Comment: 5 figure

Quantitative Constraints on the Transport Properties of Hot Partonic Matter from Semi-Inclusive Single High Transverse Momentum Pion Suppression in Au+Au collisions at sqrt(s_NN) = 200 GeV

The PHENIX experiment has measured the suppression of semi-inclusive single high transverse momentum pi^0's in Au+Au collisions at sqrt(s_NN) = 200 GeV. The present understanding of this suppression is in terms of energy-loss of the parent (fragmenting) parton in a dense color-charge medium. We have performed a quantitative comparison between various parton energy-loss models and our experimental data. The statistical point-to-point uncorrelated as well as correlated systematic uncertainties are taken into account in the comparison. We detail this methodology and the resulting constraint on the model parameters, such as the initial color-charge density dN^g/dy, the medium transport coefficient , or the initial energy-loss parameter epsilon_0. We find that high transverse momentum pi^0 suppression in Au+Au collisions has sufficient precision to constrain these model dependent parameters at the +/1 20%-25% (one standard deviation) level. These constraints include only the experimental uncertainties, and further studies are needed to compute the corresponding theoretical uncertainties.Comment: 422 authors, 13 pages text, RevTeX-4, 9 figures, 2 tables. This version is updated with changes made during the review process and is now the same as what was published in Physical Review C. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are publicly available at http://www.phenix.bnl.gov/papers.htm

Optimal DNA tier for the IRT/DNA algorithm determined by CFTR mutation results over 14years of newborn screening

AbstractBackgroundThere has been great variation and uncertainty about how many and what CFTR mutations to include in cystic fibrosis (CF) newborn screening algorithms, and very little research on this topic using large populations of newborns.MethodsWe reviewed Wisconsin screening results for 1994–2008 to identify an ideal panel.ResultsUpon analyzing approximately 1 million screening results, we found it optimal to use a 23 CFTR mutation panel as a second tier when an immunoreactive trypsinogen (IRT)/DNA algorithm was applied for CF screening. This panel in association with a 96th percentile IRT cutoff gave a sensitivity of 97.3%, but restricting the DNA tier to F508del was associated with 90% (P<.0001).ConclusionsAlthough CFTR panel selection has been challenging, our data show that a 23 mutation method optimizes sensitivity and is advantageous. The IRT cutoff value, however, is actually more critical than DNA in determining CF newborn screening sensitivity