Abstract
In addition to the high molecular weight DNA normally encountered in maize mitochondria, several cytoplasms contain plasmid-like DNAs. In the S cytoplasm (cms-S), two plasmid-like DNAs are found, S-1 and S-2, which are about 6.4 and 5.4 kilobases (kb) long, respectively (Pring et al., 1977). Electron microscopy has shown that these molecules have a linear configuration with defined ends. However, these observations do not rule out the possibility that linearity could have arisen by the breakage of native circular molecules. Additional studies have demonstrated novel sequence arrangements in that both S-1 and S-2 are terminated by inverted repeats, which are about 0.2 kb long (Levings and Pring, 1979). About 1.7 kb of terminally located sequence homology exist between the S-1 and S-2 DNAs. The common sequences involve 1.5 kb, including the inverted repeat, at one end, and at the other end, the 0.2 kb inverted repeat.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Kim, B. D., Mans, R. J., Conde, M. E., Pring, D. R., and Levings, C. S., III, 1982, Physical mapping of homologous segments of mitochondrial episomes from S male-sterile maize, Plasmid, 7:1.
Laughnan, J. R., and Gabay, S. J., 1975, Nuclear and cytoplasmic mutations to fertility in S male-sterile maize, In International Maize Symposium: Genetics and Breeding, p. 427, D. B. Waiden, ed. New York: Wiley.
Laughnan, J. R., and Gabay, S. J., 1975, An episomal basis for instability of S male sterility in maize and some implications for plant breeding, In Genetics and Biogenesis of Mitochondria and Chloroplasts, p. 330, C W. Birkey, P. S. Perlman, and T. J. Beyers, eds. Columbus: Ohio State University Press.
Levings, C. S., III, Kim, B. D., Pring, D. R., Conde, M. F., Mans, R. J., Laughnan, J. R., and Gabay-Laughnan, S. J., 1980, Cytoplasmic reversion of cms-S in maize: Association with a transpositional event, Science, 209:1021.
Levings, C. S., III, and Pring, D. R., 1979, Molecular basis of cytoplasmic male sterility of maize, In Physiological Genetics, vol. 5, p. 171, J. C. Scandalios, ed. New York: Academic Press.
Lonsdale, D. M., Thompson, R. D., and Hodge, T. P., 1981, The integrated forms of the S-1 and S-2 DNA elements of maize male sterile mitochondrial DNA are flanked by a large repeated sequence, Nucleic Acids. Res., 9:3657.
Pring, D. R., Levings, C. S., III, Hu, W. W. L., and Timothy, D. H., 1977, Unique DNA associated with mitochondria in the “S” type cytoplasm of male-sterile maize, Proc. Natl. Acad. Sei. U.S.A., 74:2904.
Spruill, W. M., Jr., Levings, C. S., III, and Sederoff, R. R., 1980, Recombinant DNA analysis indicates that the multiple chromosomes of maize mitochondria contain different sequences, Develop. Genetics, 1:363.
Thompson, R. D., Kemble, R. J., and Flavell, R. B., 1980, Variations in mitochondrial DNA organization between normal and male-sterile cytoplasms of maize, Nucleic Acid Res., 8:1999.
Timothy, D. H., Levings, C. S., III, Hu, W. W. L., and Goodman, M. M., 1982, Zea diploperennis may have plasmid-like mitochondria DNAs, Maize Genet. Coop. News Letter, 56:133.
Weissinger, A. K., Timothy, D. H., Levings, C. S., III, Hu, W. W. L., and Goodman, M. M., 1982, Unique plasmid-like mitochondrial DNAs from indigenous maize races of Latin America, Proc. Natl. Acad. Sei. U.S.A., 79:1.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1983 Plenum Press, New York
About this chapter
Cite this chapter
Levings, C.S., Sederoff, R.R., Hu, W.W.L., Timothy, D.H. (1983). Relationships Among Plasmid-Like DNAs of the Maize Mitochondria. In: Ciferri, O., Dure, L. (eds) Structure and Function of Plant Genomes. NATO Advanced Science Institutes Series, vol 63. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-4538-1_35
Download citation
DOI: https://doi.org/10.1007/978-1-4684-4538-1_35
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4684-4540-4
Online ISBN: 978-1-4684-4538-1
eBook Packages: Springer Book Archive