title: D2 virus enrichment
design: The syphon homogenate was filtered through a 0.45 m syringe filter. The virus enrichment was carried out by using 2.5 U DNase and 0.25 U RNase per l. DNA was extracted from the purified material using PureLink viral RNA/DNA MiniKit (Invitrogen) and amplified using Phi29 DNA polymerase (Genomiphi, GE Healthcare) and Whole Genome Amplification Kit (Sigma-Aldrich). Pair-end library was constructed using TruSeq Nano DNA Kit (Illumina) according to the manufacturer protocols.