SRX12771620 PauV1_genome_PacBio PacBio read DNA-seq of Phragmites australis PauV1: young leaves SRP343058 PRJNA705976 whole-genome shotgun sequencing of genomic DNA, with 20Kb target insert size SRS10717082 SAMN18320820 PauV1_genome_PacBio WGS GENOMIC size fractionation PacBio RS II