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  • 1
    Electronic Resource
    Electronic Resource
    Cytoplasmic Male Sterility in Maize (1983)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Genetics 17 (1983), S. 27-48 
    Details
    ISSN: 0066-4197
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ge.17.120183.000331
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  • 2
    Electronic Resource
    Electronic Resource
    Reorganization of mitochondrial genomes of cytoplasmic revertants in cms-S inbred line WF9 in maize (1988)
    Springer
    Theoretical and applied genetics 75 (1988), S. 659-667 
    Details
    ISSN: 1432-2242
    Keywords: Cytoplasmic male sterility ; Maize ; Mito chondrial genome ; Nucleocytoplasmic interactions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Cytoplasmic reversion to fertility in cms-S maize has been previously correlated with changes in mitochondrial genome organization, specifically with loss of the autonomously replicating linear plasmid-like DNAs, S1 and S2, and with accompanying alterations in the high molecular weight mtDNA (main genome) that specifically involved S1 and S2 sequences. These studies, however, dealt with cytoplasmic revertants occurring in the cms-VG M825 inbred line and in the cms-VG M825/Oh07 F1 hybrid. This paper deals principally with patterns of mitochondrial DNA reorganization accompanying cytoplasmic reversion to fertility in the WF9 inbred line nuclear background. Here the free S1 and S2 plasmid-like DNAs are retained in the revertants. Mitochondrial DNA analysis by Southern hybridization using cloned fragments of S1 and S2 shows altered organization around S-homologous regions in the main mitochondrial genome of revertants as compared with that of the male-sterile parental controls, but the pattern of main genome changes involving these regions differs from that of the cytoplasmic revertants that occurred in M825 and M825/Oh07 backgrounds. Similar experiments using a clone of the cytochrome oxidase I (COX I) gene of maize as a probe indicate that reorganization in this region is also involved in the changes in mtDNA that accompany cytoplasmic reversion to male fertility in cms-S WF9. The heterogeneity in patterns of reorganization of the main mtDNA genome that accompany cytoplasmic reversion in the same and different nuclear backgrounds are discussed in relation to cytoplasmic male sterility (CMS).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00289135
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  • 3
    Electronic Resource
    Electronic Resource
    A comparison of cytoplasmic revertants to fertility from different CMS-S maize sources (1988)
    Springer
    Theoretical and applied genetics 76 (1988), S. 609-618 
    Details
    ISSN: 1432-2242
    Keywords: S-type cytoplasmic male sterility ; Reversion to fertility ; Mitochondrial genome organization ; Recombination ; Maize
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The mitochondrial genome organizations of a number of independent culture-derived fertile CMS-S revertants with the nuclear genotype W182BN were compared to spontaneous field revertants with the genotypes WF9, M825/Oh07 and 38-11. Regions of the genome around sequences homologous to the terminal repeats of the linear S1 and S2 episomes characteristic of CMS-S mitochondria were used as hybridization probes on Southern blots of BamHI and SalI digested mitochondrial DNA. The results obtained suggest that the nuclear, not the cytoplasmic, genotype of the parent plant affects the type of novel mitochondrial DNA organization found in the revertant. The DNA reorganization during reversion from CMS-S in tissue culture appears to be similar to that observed in spontaneous revertants obtained during the normal plant life-cycle. Unlike the situation for reversion from CMS-T, no common DNA sequence or reading frame appeared to be lost or disrupted in revertants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00260916
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    Paper (German National Licenses)
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