Maize mitochondrial DNA rearrangements between the normal type, the Texas male sterile cytoplasm, and a fertile revertant cms-T regenerated plant

The maize mitochondrial DNA (mtDNA) from the cytoplasmic male sterile type T (cms-T) contains a 6.6 kb XhoI fragment not found in the normal type (N) or the fertile revertant (V3). Analysis of the fragment in cms-T mtDNA and homologous regions in N and V3 mtDNAs reveals that a number of events are n...

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Bibliographic Details
Published in:Current genetics 1987-02, Vol.11 (5), p.339-346
Main Authors: FAURON, C. M.-R, ABBOTT, A. G, BRETTELL, R. I. S, GESTELAND, R. F
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
Biological and medical sciences
Classical and quantitative genetics. Population genetics. Molecular genetics
Classical genetics, quantitative genetics, hybrids
Fundamental and applied biological sciences. Psychology
Generalities. Genetics. Plant material
Genetics and breeding of economic plants
Genetics of eukaryotes. Biological and molecular evolution
Pteridophyta, spermatophyta
Vegetals
Zea mays
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Summary:The maize mitochondrial DNA (mtDNA) from the cytoplasmic male sterile type T (cms-T) contains a 6.6 kb XhoI fragment not found in the normal type (N) or the fertile revertant (V3). Analysis of the fragment in cms-T mtDNA and homologous regions in N and V3 mtDNAs reveals that a number of events are necessary to explain the formation of the 6.6 kb XhoI fragment in T mtDNA and its subsequent loss in V3 mtDNA. This includes the formation and the loss of a 4 kb repeat and various recombinational events. It is interesting to note that a recombinational event that has occurred in the fertile revertant genome reconstitutes a sequence arrangement identical to one found in the normal genome.
ISSN:0172-8083
1432-0983
DOI:10.1007/BF00378175