IC4R007-Genome-2015-26358679

Project Title

• Genome and Comparative Transcriptomics of African Wild Rice Oryza longistaminata Provide Insights into Molecular Mechanism of Rhizomatousness and Self-Incompatibility

The Background of This Project

• Oryza longistaminata is an African wild rice species with AA genome type possessing special traits that are highly valued for improving cultivated rice, such as strong resistance to biotic and abiotic stresses (Song et al., 1995) for improving resistance of cultivars, rhizomatousness for perennial breeding (Glover et al., 2010), and self-incompatibility (SI) for new ways to produce hybrid seeds (Ghesquiere, 1986).Deciphering the genome of O. longistaminata will be the key to uncovering the mechanism of these hallmark traits and improving cultivated rice.

Plant Culture & Treatment

• The researchers assembled de novo a total length of �347 Mb of the reference genome of O. longistaminata (contig N50 12.5 kb; scaffold N50 363 kb) based on a large quantity of combined sequencing data (�396 3 Illumina short reads and �5.9 3 Roche GS FLX + long reads)

Research Findings

Figure A.Assembly genome of O. longistaminata(Oryza_longistaminata_v1.0). Concentric circles show the structural, functional, and evolutionary aspects of the genome: a, chromosome number; b, heatmap view of repeats; c, density of genes; d, GC content; e, paralogous relationships between chromosomes of O. longistaminata.

Labs working on this Project

• State Key Laboratory of Genetic Resources and Evolution, Kunming Instituteof Zoology, Chinese Academy of Sciences, Kunming 650223, China
• Food Crops Research Institute, Yunnan Academy of Agricultural Sciences,Kunming 650205, China
• University of Chinese Academy of Sciences, Beijing 100039, China
• Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing 100081, China
• BGI-Shenzhen, Shenzhen 518083, China
• Laboratory of Applied Genomics and Synthetic Biology, College of Life Science, Kunming University of Science and Technology, Kunming 650093, P. R. China
• Plant Germplasm and Genomics Center, Germplasm Bank of Wild Species in Southwest China, Kunming Institute of Botany, Chinese Academy of Sciences,Kunming 650201, China
• Arizona Genomics of Institute, School of Plant Sciences, University of Arizona,Tucson, AZ 85721, USA

Corresponding Author

• Fengyi Hu (hfengyiyaas@aliyun.com) & Wen Wang(wwang@mail.kiz.ac.cn) & Rod A. Wing (rwing@ag.arizona.edu)