Identification of a sterility-inducing cytoplasm in a fertile accession line of Phaseolus vulgaris L.

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Abstract

Previous investigations into the genetic mechanism of fertility restoration in cytoplasmic male sterile Phaseolus vulgaris suggested that this is a particularly interesting system for the study of nuclear-mitochondrial interactions. This study was conducted to investigate the nature of nuclear-mitochondrial compatibility in fertile accession line G08063, the reported progenitor to the cytoplasmic male sterile line. Results from genetic analysis indicated that fertile line G08063 carried a sterility-inducing cytoplasm with a fertility restoring nuclear genotype. Mitochondrial DNA analysis indicated that the mechanism of fertility restoration by line G08063 was different from that conditioned by Fr, a previously described restorer gene. A mitochondrial DNA sequence associated with sterility and lost upon fertility restoration by nuclear gene Fr was present in the mitochondrial genome of fertile line G08063; this sequence was not carried within the mitochondrial genome of any other P. vulgaris accession line tested.

Original languageEnglish (US)
Pages (from-to)411-416
Number of pages6
JournalGenetics
Volume127
Issue number2
StatePublished - Mar 1 1991

All Science Journal Classification (ASJC) codes

  • Genetics
  • Genetics(clinical)

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