FHR3 (CRX761464; CRA012187)
The genomic DNAs of soil samples were extracted by DNA extraction kit (Foregene, Chengdu Fuji Biotechnology Co., Ltd., Chengdu, China), while the genomic DNAs of plant samples were extracted by the Invisorb Spin Plant Mini Kit (company). The PCR product was then purified using Agencourt AMPure XP beads (Beckman Coulter Co., Chaska, MN, USA) and quantified using the Qubit dsDNA detection kit.