Document Detail


Mitochondrial genome diversity in soybean: repeats and rearrangements.
MedLine Citation:
PMID:  7579176     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Mitochondrial (mt) genome organization in soybean was examined at the molecular level. This study builds upon previous reports that four soybean cytoplasmic groups, Bedford, Arksoy, Lincoln, and soja-forage, are differentiated by polymorphisms detected with a 2.3 kb Hind III mtDNA probe [12]. The variation detected results from DNA alterations in a region within and around a 4.8 kb repeat. The Bedford-type cytoplasm is the only cytoplasm that contains copies of a 4.8 kb repeat in four different genomic environments, evidence that it is recombinationally active. The Lincoln- and Arksoy-type cytoplasms each contain two copies of the repeat, as well as unique fragments that appear to result from rare recombination events outside, but near, the repeat. The soja-forage-type cytoplasm contains no complete copies of the repeat, but does contain a unique truncated version of the repeat. Sequence analysis indicates that the truncation is a result of recombination across a 9 bp repeated sequence, CCCCTCCCC. The structural rearrangements that have occurred in the region surrounding the 4.8 kb repeat may provide a means to dissect species relationships and evolution within the subgenus soja.
Authors:
C A Moeykens; S A Mackenzie; R C Shoemaker
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Plant molecular biology     Volume:  29     ISSN:  0167-4412     ISO Abbreviation:  Plant Mol. Biol.     Publication Date:  1995 Oct 
Date Detail:
Created Date:  1995-12-04     Completed Date:  1995-12-04     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9106343     Medline TA:  Plant Mol Biol     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  245-54     Citation Subset:  IM    
Affiliation:
Department of Agronomy, Iowa State University, Ames 50011, USA.
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MeSH Terms
Descriptor/Qualifier:
Base Sequence
Blotting, Southern
Cloning, Molecular
DNA, Mitochondrial / genetics*
DNA, Plant / genetics*
Gene Rearrangement
Genome
Mitochondria / genetics*
Models, Genetic
Molecular Sequence Data
Polymorphism, Genetic
Recombination, Genetic*
Repetitive Sequences, Nucleic Acid
Restriction Mapping
Sequence Analysis, DNA
Soybeans / genetics*
Chemical
Reg. No./Substance:
0/DNA, Mitochondrial; 0/DNA, Plant

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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