1 Table S1. Primers used in plasmid construction and other experiments. Primer NbCaM-cds-F NbCaM-cds-R NbCaM-F NbCaM-R NtCaM-F NtCaM-R SlCaM-F SlCaM-R TRV-NbCaM-F TRV-NbCaM-R TRV-NtCaM-F TRV-NtCaM-R TRV-SlCaM-F TRV-SlCaM-R A-CaM-F A-CaM-intron-R B- CaM-intron-F B-Intron-R C-CaM-F C-CaM-R PVX-CaM-F PVX-CaM-R S-FP-F S-FP-R Y10A-F Y10A-R Y35DNA1-F Y35DNA1-R 35S-F 35S-R CaM-p-F CaM-p-R βC1-p-F βC1-p-R GFP-p-F GFP-p-R PVX-CP-F PVX-CP-R U6 G1 G2 Sequence 5'-TTACTAGTTTAGTTGTTATACG-3' 5'-CCAAGGCCAAAGAATTATGTACATG-3' 5'-GGATCCATGTGCATGGAATCA-3' 5'-CTGCAGTTAACTTGTCATCATAG-3' 5'-CGGGGTACCATGGAATCAGTTTCTGTACC-3' 5'-AACTGCAGTTAACTTGTCATCATAGCTTTG-3' 5'-CGGGGTACCATGTCTAATATGGTGTTAGTTAC-3' 5'-AACTGCAGCTAACTTGTCATCATAACTTTG-3' 5'-CGGAATTCTCTAGAAATCAGTTTCTGTACCTAGTGTTG3' 5'-CCGCTCGAGCATCGCCGTCGGAATCCGATAGTC-3' 5'-CGGAATTCTCTAGATTTCTGTACCTAGTGTTGAAAAC-3' 5'-CCGCTCGAGCATCCCCGTCGGAATCCGATAGCC-3' 5'-CGGAATTCTCTAGATGGTGTTAGTTACTGTTTCCATGG-3' 5'-CCGCTCGAGCCATCTCCGCCTCCTCCACCG-3' 5'-GAGCTCTGTGCATGGAATCAGTTTCTGTACC-3' 5'-ATCAGACTTACAACGTATACATTCCAAATGCT-3' 5'-AGCATTTGGAATGTATACGTTGTAAGTCTGAT-3' 5'-GGATCCGCTCTATCTGCTGGGTCCAAATC-3' 5'-GGATCCATACATTCCAAATGCTCCTATC-3' 5'-CTGCAGTGTGCATGGAATCAGTTTCTG-3' 5'-ATCGATATGTGCATGGAATCAAGTTTC-3' 5'-GTCGACTTAACTTGTCATCATAGCTTTG-3' 5'-GAGCTCCAGTGGAGAGGGTGAAGGTGATGC-3' 5'-GGATCCCTTTGATTCCATTCTTTTGTTTG-3' 5'-ATGTGGGATCCTCTGCTCAACGAGTTTC-3' 5'-CATCCTCAGACCTTGCGTTTCTTAAGAG-3' 5'-CCATCGATATGCCTTCAATTACCTCTGTC-3' 5'-GGTGTCGACTTAGTCCAAATACTCGTCGC-3' 5'-ACATGGTGGAGCACGACACG-3' 5'-GAGGAAGGGTCTTGCGAAGG-3' 5'-GGATCCTAATACGACTCACTATAGGGAGAAATCCTCCAAACCCAACA-3' 5'-TTCACTCAAAAAGGCAACGACAACAACAACTATTAC-3' 5'-GGATCCTAATACGACTCACTATAGGGAGAACATCATACTCATCCCCT-3' 5'-AGTCACCAGCATTAGCCAAGAAGAAATTCATG-3' 5'-CATGAGTAAAGGAGAAGAACTTTTC-3' 5'-TTCATATGATCTGGGTATCTTG-3' 5'-CACAACACAGCCCATAGGGTC-3' 5'-TTAACATCCAGTTCCATACCACTG-3' 5'-TTGCGTGTCATCCTTGCGCAGG-3 5'-GGATCCAAGGAGATATAACAATGAAGACTAATCTTTTTCT-3 5'-CTTTCTCATCTTTTCACTTCTCCTATCATTATCCTCGGCC-3 1 Purpose To amplify the complete coding region of Nbrgs-CaM To amplify the complete coding region of Nbrgs-CaM pCHF3-35S-NbCaM, for transgenic over-expression and transient agro-infiltration pCHF3-35S-NbCaM, for transgenic over-expression and transient agro-infiltration pCHF3-35S-NtCaM, for transient agro-infiltration pCHF3-35S-NtCaM, for transient agro-infiltration pCHF3-35S-SlCaM, for transient agro-infiltration pCHF3-35S-SlCaM, for transient agro-infiltration pTRV-NbCaM, for VIGS of Nbrgs-CaM via TRV vector pTRV-NbCaM, for VIGS of Nbrgs-CaM via TRV vector pTRV-NtCaM, for VIGS of Nbrgs-CaM via TRV vector pTRV-NtCaM, for VIGS of Nbrgs-CaM via TRV vector pTRV-SlCaM, for VIGS of Nbrgs-CaM via TRV vector pTRV-SlCaM, for VIGS of Nbrgs-CaM via TRV vector pCHF3-35S-dsCaM, for down-regulation of Nbrgs-CaM pCHF3-35S-dsCaM, for transgenic down-regulation of Nbrgs-CaM pCHF3-35S-dsCaM, for transgenic down-regulation of Nbrgs-CaM pCHF3-35S-dsCaM, for transgenic down-regulation of Nbrgs-CaM pCHF3-35S-dsCaM, for transgenic down-regulation of Nbrgs-CaM pCHF3-35S-dsCaM, for transgenic down-regulation of Nbrgs-CaM pGR-PVX-CaM, for over-expression of Nbrgs-CaM via PVX vector pGR-PVX-CaM, for over-expression of Nbrgs-CaM via PVX vector pCHF3-FP, for inducing GFP silencing pCHF3-FP, for inducing GFP silencing To make probe for the detection of TYLCCNV in Southern blot To make probe for the detection of TYLCCNV in Southern blot To make probe for the detection of DNA1 in Southern blot To make probe for the detection of DNA1 in Southern blot PCR screening of transgenic plants containing CaMV 35S promoter PCR screening of transgenic plants containing CaMV 35S promoter To make probe for the detection of Nbrgs-CaM in Northern blot To make probe for the detection of Nbrgs-CaM in Northern blot To make probe for the detection of βC1 in Northern blot To make probe for the detection of βC1 in Northern blot To make probe for the detection of GFP in Northern blot To make probe for the detection of βC1 in Northern blot To make probe for the detection of PVX CP in Northern blot To make probe for the detection of PVX CP in Northern blot DNA oligo probe for the detection of U6 in siRNAs blot DNA oligo probe for the detection of G siRNAs DNA oligo probe for the detection of G siRNAs G3 F1 F2 F3 P1 P2 P3 Y10A-1-siRNA Y10A-2-siRNA Y10A-3-siRNA Beta-1-siRNA Beta-2-siRNA Beta-3-siRNA NbSu-1-siRNA NbSu-2-siRNA NbSu-3-siRNA GAPDH-q-F GAPDH-q-R NtCaM-q-F NtCaM-q-R SlCaM-q-F SlCaM-q-R NbAGO1-q-F NbAGO1-q-R NbAGO4-q-F NbAGO4-q-R NbDCL1-q-F NbDCL1-q-R NbDCL2-q-F NbDCL2-q-R NbDCL3-q-F NbDCL3-q-R NbDCL4-q-F NbDCL4-q-R NbSGS3-q-F NbSGS3-q-R NbRDR1-q-F NbRDR1-q-R NbRDR2-q-F NbRDR2-q-R NbRDR6-q-F NbRDR6-q-R NbSu-q-F NbSu-q-R 5'-GAATTCAGTAAAGGAGAAGAACTTTTCACTGGAGTTGTC-3 5'-AATTTTCTGTCAGTGGAGAGGGTGAAGGTGATGCAACATA-3 5'-CGGAAAACTTACCCTTAAATTTATTTGCACTACTGGAAAA-3 5'-CTACCTGTTCCATGGCCAACACTTGTCACTACTTTCTCTT-3 5'-CAAGTTGGAATACAACTACAACTCCCACAACGTATACATC-3 5'-ATGGCAGACAAACAAAAGAATGGAATCAAAGTTAACTTCA-3 5'-AAATTAGACACAACATTGAAGATGGAAGCGTTCAACTAGC-3 5'-CCCCTATCACCCATTATCATCAC-3' 5'-TTGCAGTTAGTTGAAAAAACCTACTCTCCTG-3' 5'-CCCGCAGATATAGTCATTTCCACTCCCGCCT-3' 5'-TCATATATTTGAATACGTATATATATGTATT-3' 5'-GAATTTGTAAATACATCATACTCATCCCCTA-3' 5'-GGTGGGATAATCCCATGGTGTCTGTATGGGA-3' 5'-CAGGGCAGAGTCAAGGGAGGAAGTTTTATGGAGGGATTAG-3' 5'-AAGTCAGCCCTGCTCAAGAACAGGGTCAGAAACTTGCTGA-3' 5'-ATGTCTTTTGCTGAATGTAATTGATCCAAAGATTGGAGGT-3' 5'-GCAGTGAACGACCCATTTATCTC-3' 5'-AACCTTCTTGGCACCACCCT-3' 5'-ATGGAAAAGTGTCACCGGCTGAGC-3' 5'-TTCCAAATGCTCCTATCAATTCACTC-3' 5'-GGGTATTTACGTACTTTGATGAGAATGG-3' 5'-TATTCCTCTCTTCCTCCATTCCTTCC-3' 5'-CTGGCGTGGCTTCTATCAAAGTATT-3' 5'-CACCTTTACACCTCTCAGTGCCTTC-3' 5'-GGAACTATGACTTCTACCTGTGTGCC-3' 5'-AACTTCATCCATTGTCCAACTTGTGT-3' 5'-TCTTTACATACACAGATCTCCCC-3' 5'-ACCTGGTTTTGATAGTTCATTTT-3' 5'-GAAGGCAGAAGACTAAAAGTAAGAGG-3' 5'- CTACAAGCAGAGAAGGATCATGGAAC-3' 5'-GAGTCAACAGAGCGTAAATCCAAGTC-3' 5'-CTGTCGTTCTAGCTCATACAGCATGA-3' 5'- GCAAAGACTGAAGTTAGGTGTAGCAA-3' 5'-TTTCATCAGCAAGTGGAATAAAGATT-3' 5'-GTTCCTCCTGCTCTGAAGAATGG-3' 5'-GGGCAGTGCCACTGTCGTTCAGG-3' 5'-GACAACTTCCAAAATCTCCATCCA-3' 5'-TTCTCCCACTCCTCATCAACAAAA-3' 5'-GGCACCAACTCATTCTAACCTC-3' 5'-CCAACCTATAACACTCCCCCTT-3' 5'-GTATGCGGAACTTGAATAGGAATGTG-3' 5'-GGTCTTCTGCAAAAAACCAGGCAGA-3' 5'-GCTTCTACACCCTTGTCTTCTCG-3' 5'-CCCCTATCACCCATTATCATCAC-3' DNA oligo probe for the detection of G siRNAs DNA oligo probe for the detection of F siRNAs DNA oligo probe for the detection of F siRNAs DNA oligo probe for the detection of F siRNAs DNA oligo probe for the detection of P siRNAs DNA oligo probe for the detection of P siRNAs DNA oligo probe for the detection of P siRNAs DNA oligo probe for the detection of TYLCCNV siRNAs DNA oligo probe for the detection of TYLCCNV siRNAs DNA oligo probe for the detection of TYLCCNV siRNAs DNA oligo probe for the detection of TYLCCNB siRNAs DNA oligo probe for the detection of TYLCCNB siRNAs DNA oligo probe for the detection of TYLCCNB siRNAs DNA oligo probe for the detection of NbSu siRNAs DNA oligo probe for the detection of NbSu siRNAs DNA oligo probe for the detection of NbSu siRNAs Relative qRT-PCR analysis of NbGADPH Relative qRT-PCR analysis of NbGADPH Relative qRT-PCR analysis of NtCaM Relative qRT-PCR analysis of NtCaM Relative qRT-PCR analysis of SlCaM Relative qRT-PCR analysis of SlCaM Relative qRT-PCR analysis of NbAGO1-1 Relative qRT-PCR analysis of NbAGO1-1 Relative qRT-PCR analysis of NbAGO4-1 Relative qRT-PCR analysis of NbAGO4-1 Relative qRT-PCR analysis of NbDCL1 Relative qRT-PCR analysis of NbDCL1 Relative qRT-PCR analysis of NbDCL2 Relative qRT-PCR analysis of NbDCL2 Relative qRT-PCR analysis of NbDCL3 Relative qRT-PCR analysis of NbDCL3 Relative qRT-PCR analysis of NbDCL4 Relative qRT-PCR analysis of NbDCL4 Relative qRT-PCR analysis of NbSGS3 Relative qRT-PCR analysis of NbSGS3 Relative qRT-PCR analysis of NbRDR1 Relative qRT-PCR analysis of NbRDR1 Relative qRT-PCR analysis of NbRDR2 Relative qRT-PCR analysis of NbRDR2 Relative qRT-PCR analysis of NbRDR6 Relative qRT-PCR analysis of NbRDR6 Relative qRT-PCR analysis of Nb-Su Relative qRT-PCR analysis of Nb-Su 2 2 3