Abstract
Using an in silico cloning approach, five putative maize pentatricopeptide repeat (PPR)-containing protein genes (PPR-814a, PPR-814b, PPR-814c, PPR-816, PPR-817) with complete open reading frames were identified in the inbred line S-Mo17Rf3Rf3. The amino acid sequence indicated that these genes encoded mitochondrially targeted proteins containing repeats of a 35-aa PPR motif. The genes were mapped into the interval umc1525–bnlg1520 on chromosome 2. In a non-restoring genotype, we identified three homologous genes that contained deletions or nucleotide substitutions in the coding region. Sequence analysis revealed that one of the three genes (PPR-814a, PPR-814b, PPR-814c) could be considered a candidate restorer gene for S male sterility cytoplasm, and linkage analysis demonstrated that the genes co-segregated with the fertility restorer gene Rf3.
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This work was supported by Key Project of Chinese National Programs for Fundamental Research and Development (2007CB109006).
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Xu, XB., Liu, ZX., Zhang, DF. et al. Isolation and Analysis of Rice Rf1-Orthologus PPR Genes Co-segregating with Rf3 in Maize. Plant Mol Biol Rep 27, 511–517 (2009). https://doi.org/10.1007/s11105-009-0105-4
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DOI: https://doi.org/10.1007/s11105-009-0105-4