Detection of TRV transcripts in VIGS leaves with phenotypic changes of tea plants: (a). 1–5 detected the strand of viral pTRV2, and 6–10 detected the strand of viral pTRV1 (1, uninfected seedlings; 6, uninfected cuttings; 2, seedlings infected with pTRV1 + pTRV2; 7, cuttings infected with pTRV1 + pTRV2; 3–5, seedlings infected with pTRV1 + pTRV2-CsPOR1; 8–10, cuttings infected with pTRV1 + pTRV2-CsPOR1); (b) 1–5 detected the strand of viral pTRV1, and 6–10 detected the strand of viral pTRV2 (1, uninfected seedlings; 6, uninfected cuttings; 2, seedlings infected with pTRV1 + pTRV2; 7, cuttings infected with pTRV1 + pTRV2; 3–5, seedlings infected with pTRV1 + pTRV2-CsTCS1; 8–10, cuttings infected with pTRV1 + pTRV2-CsTCS1). M: DL1200 marker.