Subgenomic Stability of Progenitor Genomes During Repeated Allotetraploid Origins of the Same Grass Brachypodium hybridum.

"the genome assembly and main script used in analysis were uploaded at github ( https://github com/axolotl233/brachypodium_hybridum-eci-genome )."

"Conflict of interest statement. The authors declare no conflict of interest."

"Funding J.L. (Jianquan Liu) was supported by the Second Tibetan Plateau Scientific Expedition and Research (STEP) program (no. 2019QZKK0502) and Strategic Priority Research Program of Chinese Academy of Sciences (no. XDB31010300). P.C. (Pilar Catalan) was funded by the Spanish Ministry of Science and Innovation (grant no. PID2019-108195GB-I00), the Spanish Aragon Government (grant no. LMP82_21), and the Spanish Aragon Government-European Social Fund Bioflora (grant no. A01-23R). All the computation works were supported by the Big Data Computing Platform for Western Ecological Environment and Regional Development, and the Supercomputing Center of Lanzhou University."