Search results for "polymorph"

A mathematical method for determining genome divergence and species delineation using AFLP.

2002

The delineation of bacterial species is presently achieved using direct DNA-DNA relatedness studies of whole genomes. It would be helpful to obtain the same genomically based delineation by indirect methods, provided that descriptions of individual genome composition of bacterial genomes are obtained and included in species descriptions. The amplified fragment length polymorphism (AFLP) technique could provide the necessary data if the nucleotides involved in restriction and amplification are fundamental to the description of genomic divergences. Firstly, in order to verify that AFLP analysis permits a realistic exploration of bacterial genome composition, the strong correspondence between …

Population Structure and Comparative Genome Hybridization of European Flor Yeast Reveal a Unique Group of Saccharomyces cerevisiae Strains with Few G…

2014

Wine biological aging is a wine making process used to produce specific beverages in several countries in Europe, including Spain, Italy, France, and Hungary. This process involves the formation of a velum at the surface of the wine. Here, we present the first large scale comparison of all European flor strains involved in this process. We inferred the population structure of these European flor strains from their microsatellite genotype diversity and analyzed their ploidy. We show that almost all of these flor strains belong to the same cluster and are diploid, except for a few Spanish strains. Comparison of the array hybridization profile of six flor strains originating from these four co…

Non synonymous nucleotide polymorphisms in human taste receptors and individual taste sensitivity to glutamate

2008

National audience

Identification et développement de marqueurs microsatellites polymorphes chez Tuber aestivum (syn. uncinatum) par une approche de pyroséquençage

2012

Spatial distribution of ammonia-oxidizing bacteria and archaea across a 44-hectare farm related to ecosystem functioning

2011

Characterization of spatial patterns of functional microbial communities could facilitate the understanding of the relationships between the ecology of microbial communities, the biogeochemical processes they perform and the corresponding ecosystem functions. Because of the important role the ammonia-oxidizing bacteria (AOB) and archaea (AOA) have in nitrogen cycling and nitrate leaching, we explored the spatial distribution of their activity, abundance and community composition across a 44-ha large farm divided into an organic and an integrated farming system. The spatial patterns were mapped by geostatistical modeling and correlations to soil properties and ecosystem functioning in terms …

Perception du goût : sommes-nous tous égaux ?

2010

National audience; Les sens olfactifs et gustatifs jouent un rôle essentiel dans le comportement alimentaire. L'être humain est capable de percevoir des milliers de composés odorants grâce à un système de codage combinatoire impliquant environ 340 récepteurs olfactifs. Les récepteurs olfactifs sont sujets à un important polymorphisme génétique susceptible d'induire différentes perceptions de certaines odeurs. La perception des molécules sapides implique un nombre beaucoup plus restreint de récepteurs dont certains restent encore à découvrir. Un polymorphisme génétique à l'origine de variations importantes dans les seuils de perception de certains composés sapides affecte également les récep…

Fluidity and cytosolic Ca2+ concentration of circulating polymorphonuclear leukocytes at baseline in some chronic and acute clinical conditions: revi…

2016

Abstract. Objective: In this mini-review we describe the behavior of polymorphonuclear leukocyte (PMN) membrane fluidity and of PMN cytosolic Ca2+ concentration in some chronic and acute clinical conditions. Methods: PMN membrane fluidity was evaluated employing the fluorescent probe Fura-2AM, and PMN cytosolic Ca2+ concentration was evaluated using the fluorescent probe TMA-DPH. Results: From the determination of these two parameters investigated on resting PMNs, an almost constant increase in PMN cytosolic Ca2+ concentration in chronic clinical conditions, such as vascular atherosclerotic disease with and without diabetes mellitus, essential hypertension, chronic kidney disease, and diabe…

Runs of homozygosity in the Italian goat breeds: impact of management practices in low-input systems

2021

Abstract Background Climate and farming systems, several of which are considered as low-input agricultural systems, vary between goat populations from Northern and Southern Italy and have led to different management practices. These processes have impacted genome shaping in terms of inbreeding and regions under selection and resulted in differences between the northern and southern populations. Both inbreeding and signatures of selection can be pinpointed by the analysis of runs of homozygosity (ROH), which provides useful information to assist the management of this species in different rural areas. Results We analyzed the ROH distribution and inbreeding (FROH) in 902 goats from the Italia…

Polymorphous low-grade adenocarcinoma of the parotid gland : case report and review of the literature

2007

Polymorphous low-grade adenocarcinoma (PLGA) is difficult to diagnose both clinically and histologically due to its indolent presentation, and because of its morphological diversity that includes several microscopic patterns. The aggressive biologic behavior seen in minor salivary glands as compared to major glands is apparently associated histologically to a predominance of the papillary pattern in the former. Biologic behavior of PLGA in the major salivary glands is uncertain, as some cases have developed recurrences and metastases independently of the presence of a papillary pattern. A case of PLGA originated de novo in parotid gland is presented a 60 year-old male, treatment was surgica…

'Immunogenetics of Aging': report on the activities of the 15th International HLA and Immunogenetics Working Group and 15th International HLA and Imm…

2011

'Immunogenetics of Aging' is a component that was first included in the 14th International HLA and Immunogenetics Workshop (IHIWS) and developed further within the 15th Workshop. The aim of this component was to assess the impact of human leukocyte antigen (HLA) genes, cytokine genes, and some innate immunity genes such as killer-cell immunoglobulin-like receptors (KIRs) and mannose-binding lectin 2 (MBL2) in successful aging and their contribution to the better understanding of immune dysfunction in old age. Within the 15th IHIWS new populations were included in the analysis. Additional cytokine gene polymorphisms were assessed and innate immunity genes were analyzed for possible relevance…