ISSN:
1618-0860
Keywords:
Chloroplast DNA
;
Phylogenetic relationship
;
Physical map
;
RFLP analysis
;
Restriction fragment pattern
;
Sesamum (sesame)
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract It is widely approved that comparing restriction profiles and maps of chloroplast DMA provides valuable information concerning inter-and/or intra-specific relationships among plant species. Such chloroplast DNA analysis was applied to species and strains inSesamum which is a genus of approximately 38 species and contains a large number of strains of the cultivated sesame,S. Indlcum. Our chloroplast DNA investigations of 22 species and strains showed that; (i) among four species (S. capense, S. radiatum, S. schinzianum andS. indicum), the chloroplast genome ofS. capense was most distantly related to that of the cultivated species,S. indicum, (ii) chloroplast DNA polymorphism was also recognized among eight cultivated stralns collected from various regions in the tropical zone, but not among eight different varieties grown in the temperate zone, and (iii) the chloroplast DNA alterations observed could be attributed to the site gains or losses with the exception of the alterartion detected within the inverted repeat sequences inS. capense chloroplast DNA. These results demonstrate the presence of chloroplast genome diversity amongSesamum species and strains, suggesting the usefulness of chloroplast DNA analysis for elucidating the species relationships in the genusSesamum and the origin and evolutionary process of the cultivated sesame species.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02344377
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