library_construction_protocol: Total RNA was treated with RQ1 DNase (Promega) to remove DNA. The quality and quantity of the purified RNA were determined by measuring the absorbance at 260nm/280nm (A260/A280) using smartspec plus (BioRad). RNA integrity was further verified by 1.5% agarose gel electrophoresis. For each sample, 1 μg of total RNA was treated with RQ1 DNase (Promega) to remove DNA before used for directional RNA-seq library preparation by VAHTS® Universal V8 RNA-seq Library Prep Kit for Illumina (N605) for RNA-seq library preparation. mRNAs were captured by VAHTS mRNA capture Beads (Vazyme, N401). Fragmented mRNAs were converted into double strand cDNA. Following end repair and A tailing, the DNAs were ligated to VAHTS RNA Multiplex Oligos Set 1 for Illumina (N323), the ligated products were amplified, purified, quantified, and stored at -80℃ before sequencing. The strand marked with dUTP (the 2nd cDNA strand) is not amplified, allowing strand-specific sequencing.