Identification and characterization of double-stranded RNA associated with cytoplasmic male sterility in Vicia faba

AUTOR(ES)

Grill, L. K.

RESUMO

The cytoplasmic male sterility (CMS) trait of at least one line of Vicia faba plants is always associated with the presence of high molecular weight double-stranded RNA in the leaf tissue extracts. Subcellular fractions of leaf tissue from CMS and fertile maintainer plants were initially analyzed in an attempt to locate, identify, and characterize the genetic material involved with the sterility trait. This CMS-associated high molecular weight RNA was found only in the cytosol of the “447” male sterile line of V.faba plants and could not be isolated from the recurrent parent (maintainer), from lines that had been fertility-restored, or from lines that had reverted from the sterile condition. We have been able to move the CMS-associated RNA from donor to fertile host plants through a dodder bridge. These hots not only contain the RNA but now exhibit a male sterile phenotype, as detected by visual examination of the flower, the pollen, morphological characteristics, and pollen staining ability.

Documentos Relacionados

• Characterization of double-stranded RNA satellites associated with the Trichomonas vaginalis virus.
• Identification of double-stranded RNA-binding domains in the interferon-induced double-stranded RNA-activated p68 kinase.
• “Methylation-coupled” transcription by virus-associated transcriptase of cytoplasmic polyhedrosis virus containing double-stranded RNA
• Cytoplasmic Sterility Factors in VICIA FABA L
• A deletion mutant of L-A double-stranded RNA replicates like M1 double-stranded RNA.