Institut de Génétique et Microbiologie - Université de Paris-Sud XI / CNRS
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Podospora anserina Genome Project
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Podopora anserina is used over 60 years for genetics studies and a detailed genetic map is vailable (Marcou et al., 1993 in Genetic Maps, 6th Ed.).
Genetic Map
Click on the thumbnail to enlarge the genetic map.


These early genetic studies showed that P. anserina genome is distributed on 7 nuclear chromosomes (labelled LG I to LG VII) and one mitochondrial chromosome.

Gel electrophoresis has allowed to accurately measure the genome size. Podospora anserina, like all filamentous fungi, has a small genome (circa 34 millions base pairs).
With current assembly genome size is estimated at 35-36 megabases.

 

Chromosome name

Localisation 

Size

LG I

nuclear

8.8 Mb

LG II

nuclear

5.5 Mb

LG III

nuclear

4.9 Mb

LG IV

nuclear

3.8 Mb

LG V

nuclear

5.1 Mb

LG VI

nuclear

4.3 Mb

LG VII

nuclear

4.3 Mb

mito

mitochondrial

variable : about 100 Kb


During the 1980's, the complete sequence of the mitochondrial genome of the s ("small s") strain has been established. It can be downloaded from the NCBI.
The complete sequence project started with a pilot project aimed to establish the sequence of the region bordering the centromere of LG V.  Sequences can be downloaded at NCBI or EMBL with Accession #: BX088700 and AL627362

Analysis of the region sequenced during the pilot project shows that the genes contain 1-2 introns, which have a small size (about 60 nucleotides). There is 1 kb in average between each gene. Results of the analysis are published in Fungal Genetics and Biology :

Philippe Silar, Christian Barreau, Robert Debuchy, Sébastien Kicka, Béatrice Turcq, Annie Sainsard-Chanet, Carole H. Sellem, Alain Billault, Laurence Cattolico, Simone Duprat and Jean Weissenbach (2003) Characterization of the genomic organization of the region bordering the centromere of chromosome V of Podospora anserina by direct sequencing, Volume 39 n°3 Pages 250-263

Additional P. anserina sequences can be access at NCBI.

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Last modified 12-01-04.