Table 1.

Genome assembly, repeat, and gene space annotation summary statistics for P. tremula and P. tremuloides

Assembly	P. tremula	P. tremuloides
No. of scaffolds	216,318	164,504
Total size of scaffolds, bp	390,124,095	377,489,497
No. of scaffolds >500 bp	57,475	59,039
No. of scaffolds >1,000 bp	31,806	39,866
No. of scaffolds >10,000 bp	5,161	10,248
No. of scaffolds >100,000 bp	687	28
N50 bp	42,844	15,222
Repeat annotation (% values)
Total	21.54	22.09
Ty1-copia	4	4.02
Ty3-gypsy	7.4	7.2
Other-LTR	0.13	0.11
LINEs	0.38	0.35
SINEs	0.36	0.38
DNA	3.28	3.43
NHF	5.99	6.6
Gene annotation (counts)
High/low-confidence gene loci	29,252/6,057	26,842/8,852
High/low-confidence transcripts	76,557/8,312	34,439/13,899
High/low gene loci expressed	27,825/4,833	NA/NA

LINEs, long interspersed nuclear elements; N50, scaffold length for which at least half of the nucleotides in the assembly belong to scaffolds with the N50 length or longer; NA, not applicable; NHF, no hit found, i.e., elements that are LTR-RTs related but do not have significant similarity with the major families; SINEs, short interspersed nuclear element.