Plastid DNA diversity in natural populations of Beta maritima showing additional variation in sexual phenotype and mitochondrial DNA

Plants of two natural populations of Beta maritima, characterized by high percentages of male-sterile plants, have been investigated for organelle DNA polymorphism. We confirm the two classes of mitochondrial DNA variation previously described: (i) mitochondrial DNA (mtDNA) type N is associated with...

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Bibliographic Details
Published in:Theoretical and applied genetics 1991-04, Vol.81 (4), p.533-536
Main Authors: Saumitou-Laprade, P, Pannenbecker, G, Boutin-Stadler, V, Michaelis, G, Vernet, P
Format: Article
Language:English
Subjects:
Beta
Beta vulgaris
Beta vulgaris subsp. maritima
Beta vulgaris subsp. vulgaris
Biological and medical sciences
chloroplasts
Classical genetics, quantitative genetics, hybrids
cytoplasmic inheritance
cytoplasmic male sterility
DNA
Fundamental and applied biological sciences. Psychology
genetic polymorphism
Genetics of eukaryotes. Biological and molecular evolution
male fertility
mitochondrial DNA
plasmids
Pteridophyta, spermatophyta
restriction mapping
segregation
Vegetals
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Summary:Plants of two natural populations of Beta maritima, characterized by high percentages of male-sterile plants, have been investigated for organelle DNA polymorphism. We confirm the two classes of mitochondrial DNA variation previously described: (i) mitochondrial DNA (mtDNA) type N is associated with male fertility, whereas mtDNA type S can cause cytoplasmic male sterility (CMS), (ii) the 10.4-kb linear plasmid is observed in both types of mitochondria and is not correlated with the cytoplasmic male sterility occurring in this plant material. A third polymorphism is now described for chloroplast DNA (ctDNA). This polymorphism occurs within single populations of Beta maritima. Three different ctDNA types have been identified by HindIII restriction analysis. Among the plants studied, ctDNA type 1 is associated with N mitochondria and type 1, with S mitochondria. Chloroplast DNA type 3 has been found both in a fertile N plant and in a sterile S plant. This finding suggests that the chloroplast DNA polymorphism reported is not involved in the expression of male sterility. A comparison with Beta vulgaris indicates that ctDNA type 3 of Beta maritima corresponds to the ctDNA of fertile sugar beet maintainer lines. The three types of Beta maritima ctDNA described in this study differ from the ctDNA of male-sterile sugar beet.
ISSN:0040-5752
1432-2242
DOI:10.1007/BF00219445