A comparative study of the mitochondrial genome organization in in vitro cultures of diploid, tetraploid, and hexaploid Triticum species

A - Papers appearing in refereed journals

Hartmann, C., Winfield, M., Corre, F., Davey, M. R., Rode, A. and Karp, A. 1996. A comparative study of the mitochondrial genome organization in in vitro cultures of diploid, tetraploid, and hexaploid Triticum species. Theoretical and Applied Genetics. 93 (5-6), pp. 968-974.

AuthorsHartmann, C., Winfield, M., Corre, F., Davey, M. R., Rode, A. and Karp, A.
Abstract

Southern-blot hybridizations of total DNA to mitochondrial DNA (mtDNA) probes were used to investigate the extent of mtDNA variability in cultures derived from immature embryos of diploid (Triticum monococcum, genomic formula: AA, T. tauschii, genomic formula: DD), allotetraploid (T. durum cv ''Creso'', genomic formula: AABB). and allohexaploid (T. aestivum, genomic formula: AABBDD) wheat species. Similar distinct changes in mtDNA organization were observed in in vitro cultures of the derived tetraploid and the hexaploid species with related genomes. The tetraploid and hexaploid species share the B genome and mtDNA variability in in vitro culture is known to be under nuclear control. These results suggest that a study of B genome diploids and other polyploid combinations would now shed light on whether or not mtDNA variability in tissue cultures is under B-genome control.

KeywordsTriticum; allopolyploidy; mitochondrial DNA; somatic tissue culture; chondriome variability; somatic tissue-cultures; immature embryos; Wheat; Dna; Plants; Maize; Recombination; Sequences; aestivum
Year of Publication1996
JournalTheoretical and Applied Genetics
Journal citation93 (5-6), pp. 968-974
Digital Object Identifier (DOI)doi:10.1007/bf00224100
Open accessPublished as non-open access
Funder project or codeThe BBSRC Sustainable Bioenergy Centre (BSBEC): Perennial Bioenergy Crops Programme [2009-2015]
FunderBiotechnology and Biological Sciences Research Council
ISSN00405752

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