highlights

publications

Assessing SSU rDNA Barcodes in Foraminifera: A Case Study using Bolivina quadrata.

The Small Subunit Ribosomal RNA gene (SSU rDNA) is a widely used tool to reconstruct phylogenetic relationships among foraminiferal species. Recently, the highly variable regions of this gene have been proposed as DNA barcodes to identify foraminiferal species. However, the resolution of these barcodes has not been well established, yet. In this study, we evaluate four SSU rDNA hypervariable regions (37/f, 41/f, 43/e, and 45/e) as DNA barcodes to distinguish among species of the genus Bolivina, with particular emphasis on Bolivina quadrata for which ten new sequences (KY468817-KY468826) were obtained during this study. Our analyses show that a single SSU rDNA hypervariable sequence is insufficient to resolve all Bolivina species and that some regions (37/f and 41/f) are more useful than others (43/e and 45/e) to distinguish among closely related species. In addition, polymorphism analyses reveal a high degree of variability. In the context of barcoding studies, these results emphasize the need to assess the range of intraspecific variability of DNA barcodes prior to their application to identify foraminiferal species in environmental samples; our results also highlight the possibility that a longer SSU rDNA region might be required to distinguish among species belonging to the same taxonomic group (i.e., genus). This article is protected by copyright. All rights reserved.

news

UNIGE is the second largest European innovation player

The Nature magazine publishes this year a Nature Index Innovation, in which the University of Geneva is ranked 21st in the world.

events

Seasonal coordination of reproductive programs by photoperiodic signals in rice

27.09.2017 11:15, 1S059 (Sciences III)

Fabio Fornara (Université de Milan).
hosted by: Roman Ulm.

Research

Our department hosts 12 research laboratories gathering close to 200 scientists, engineers and technical staff. Research topics cover a large variety of topics, such as developmental genetics and neurogenetics, regeneration, evo-devo, physics of biology, phylogenetics or anthropology.

more

Education

Teaching life sciences at the University of Geneva is an important duty for all staff scientists. In addition to the bachelor programme, we also propose specific masters and PhD specialisations through various programmes.

more

contact

Department of Genetics and Evolution
4, Boulevard d'Yvoy
1205 Geneva
Switzerland

office: 4002A
T: +41 22 379 67 85

more