The raw reads generated in this study have been deposited in the NCBI
Sequence Read Archive (https://www.ncbi.nlm.nih.gov/sra) under the
BioProject accession PRJNA613008 (An et al., 2020a). The genome assembly
and annotation of P. tomentosa has been deposited at
DDBJ/ENA/GenBank under the accession JAAWWB000000000 (An et al., 2020b).
The transcriptome assemblies have been deposited at DDBJ/EMBL/GenBank
under the accessions GIKW00000000 (P. grandidentata),
GILB00000000 (P. davidiana), GIKX00000000 (P. adenopoda)
and GILC00000000 (P. alba) (An et al., 2020c). The chloroplast
genome assemblies also have been deposited at GneBank under accessions
MW537051 (P. alba × Populus glandulosa), MW537052
(P. glandulosa), MW537053 (P. tremuloides) and MK251149.1
(P. tomentosa ) (An et al., 2021).