RNA-Seq of Azolla imbricateRoxb.) Nakais : root under 30 mg/L nitrogen treatment
Total RNA was isolated using a RNA reagent (OminiPlant RNA Kit, CWBIO, China), and  Sequencing libraries were generated using NEBNext Ultra RNA Library Prep Kit for Illumina (NEB, USA) following manufacturers recommendations. The library preparations were sequenced on an Illumina Hiseq platform according to manufacturer's instructions.