Fig. 1.

Sequence and expression analysis of rice RNA‐dependent RNA polymerases (RDRs). (a) Phylogenetic analysis of selected α‐clade and γ‐clade RDRs. (b) Amino acid sequence alignment of catalytic domain of α‐ and γ‐clade RDRs. γ‐clade RDRs have a different catalytic motif compared with α‐clade RDRs. (c) Summary of protein sequence length of different rice RDRs. (d) Protein sequence similarity between different rice and Neurospora RDRs. Values are calculated in percentages. (e) Chromosomal location, exon positions and expression of OsRDR3. Green box represents the exons and solid black line represents the introns. Arrowhead indicates the gene location in the chromosome. The G‐Browser picture was downloaded from RAP‐DB. (f) Expression analysis of OsRDR3 across tissues of Oryza sativa indica by RT‐qPCR. YP, young panicle; MP, mature panicle. OsACTIN1 was used as an internal control. The error bars indicate SE. (g) Chromosomal location, exon positions and expression of OsRDR4. The G‐Browser picture was downloaded from RAP‐DB. (h) Expression analysis of OsRDR4 across tissues of O. sativa indica by RT‐qPCR. The error bars indicate SE.