Population resequencing, population structure analysis, selective sweep detection, adaptive locus mining and phylogenetic traceability were conducted.
Key Findings
Terrace indica rice preserves an independent ancient genetic clade with substantial genetic differentiation from modern cultivated indica varieties.
Key gene intervals under long-term combined artificial and natural selection governing altitude adaptation, low-nutrient tolerance and red grain pigment accumulation were mapped.
Elite allelic variants adapted to the unique terrace microhabitat were excavated, supplying valuable genetic resources for conservation of characteristic rice germplasm and high-quality rice breeding.
The corresponding article Genome Sequencing of Rice Landraces from the Yuanyang Terraces Uncovers Ancient and Diverse Lineages of Indica Rice was released as a preprint on the bioRxiv platform.