Peng-Fei Ma, Yun-Long Liu, Cen Guo, Guihua Jin, Zhen-Hua Guo, Ling Mao, Yi-Zhou Yang, Liang-Zhong Niu, Yu-Jiao Wang, Lynn G Clark, Elizabeth A Kellogg, Zu-Chang Xu, Xia-Ying Ye, Jing-Xia Liu, Meng-Yuan Zhou, Yan Luo, Yang Yang, Douglas E Soltis, Jeffrey L Bennetzen, Pamela S Soltis, De-Zhu Li
Polyploidy (genome duplication) is a pivotal force in evolution. However, the interactions between parental genomes in a polyploid nucleus, frequently involving subgenome dominance, are poorly understood. Here we showcase analyses of a bamboo system (Poaceae: Bambusoideae) comprising a series of lineages from diploid (herbaceous) to tetraploid and hexaploid (woody), with 11 chromosome-level de novo genome assemblies and 476 transcriptome samples. We find that woody bamboo subgenomes exhibit stunning karyotype stability, with parallel subgenome dominance in the two tetraploid clades and a gradual shift of dominance in the hexaploid clade...
March 15, 2024: Nature Genetics