Related Experiment Video
Updated: Jun 4, 2025

Genetic Mapping of Thermotolerance Differences Between Species of Saccharomyces Yeast via Genome-Wide Reciprocal Hemizygosity Analysis
Published on: August 12, 2019
The highly allo-autopolyploid modern sugarcane genome and very recent allopolyploidization in Saccharum
Jisen Zhang1, Yiying Qi2, Xiuting Hua3
1State Key Lab for Conservation and Utilization of Subtropical Agro-Biological Resources, Guangxi Key Lab for Sugarcane Biology, College of Agriculture, Guangxi University, Nanning, China. zjisen@126.com.
Abstract:
Modern sugarcane, a highly allo-autopolyploid organism, has a very complex genome. In the present study, the karyotype and genome architecture of modern sugarcane were investigated, resulting in a genome assembly of 97 chromosomes (8.84 Gb). The allopolyploid genome was divided into subgenomes from Saccharum officinarum (Soh) and S. spontaneum (Ssh), with Soh dominance in the Saccharum hybrid (S. hybrid). Genome shock affected transcriptome dynamics during allopolyploidization. Analysis of an inbreeding population with 192 individuals revealed the underlying genetic basis of transgressive segregation. Population genomics of 310 Saccharum accessions clarified the breeding history of modern sugarcane. Using the haplotype-resolved S. hybrid genome as a reference, genome-wide association studies identified a potential candidate gene for sugar content from S. spontaneum. These findings illuminate the complex genome evolution of allopolyploids, offering opportunities for genomic enhancements and innovative breeding strategies for sugarcane.
More Related Videos
Related Concept Videos
Biosynthesis of Polysaccharides
Synthetic Biology
Golden rice
Golden rice is a genetically modified...
Oligosaccharide Assembly
Multiple sugar molecules that may or may...
Evolutionary Relationships through Genome Comparisons
Phloem and Sugar Transport
Single Nucleotide Polymorphisms-SNPs

