Agroecology 2 min

The International Consortium on Sunflower Genomics

The International Consortium on Sunflower Genomics (ICSG), coordinated by INRAE Occitanie-Toulouse, joins 4 public labs from France, Canada, United States and Israël, and 8 private partners. During 4 years, the ICSG will characterize genetic diversity in sunflower by producing new high quality genome sequences of wild sunflowers. These data will improve our knowledge on the structure of the genomes and on their evolution and facilitate the use of wild relatives in breeding improved sunflower varieties.

Published on 17 October 2019

illustration The International Consortium on Sunflower Genomics

From bronze to gold, history of an international collaborative network

The first International Consortium on Sunflower Genomics started in 2012. Loren Rieseberg from the University of British Columbia (Canada) coordinated it, involving 2 additional public labs from The University of Georgia (USA) and INRAE (France).

In 2015, the consortium released the first draft (bronze version) of the sunflower genome sequence.

In the same time, developments made by PacBio to produce improved and longer sequences permitted the generation of a reference sequence of the sunflower genome that was of higher quality than the bronze version. This reference genome sequence was assembled by using genetic and genomic data from the consortium and PacBio sequences produced in the frame of the SUNRISE project (Investments for the Future), revealing the genes involved in oil production and in flowering.  

This historical collaborative network was the cornerstone for sharing resources for sunflower genomics and breeding.

The International Consortium on Sunflower Genomics will mainly focus on producing new genetic and genomic resources to give ICSG partners access to an improved and more diversified catalogue of sunflower genes and alleles. This catalogue will make sunflower research more competitive and will accelerate breeding of new sunflower varieties.

Toward a better understanding of Helianthus diversity by sequencing genomes of wild sunflowers

The ICSG is joining the main public international research institutes working on sunflower genomics with seed companies. Together they will:

  • sequence new sunflower genomes and the genomes of wild relatives,
  • develop and characterize genetic resources,
  • produce a gene atlas involved in response to stress,
  •  compare and release the genome sequences and provide bioinformatics tools for analyses

We will compare the genome sequences to identify differences (e.g., sequence or structural variants) among cultivars and wild species that can be used in breeding programs to improve tolerance to abiotic stresses and resistance to pests in new sunflower varieties.

Communication department INRAE Occitanie-Toulouse SDAR


Stéphane Muños Coordinator of the ICSG Laboratory of Plant-Microbe and Environnement Interactions (INRAE-CNRS)


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