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GrainGenes Reference Report: TAG-89-572

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Reference	TAG-89-572
Title	Unusual inheritance of the mitochondrial genome organization in the progeny of reciprocal crosses between alloplasmic hexaploid wheat regenerants
Journal	Theoretical and Applied Genetics
Year	1994
Volume	89
Pages	572-576
Author	Morere-Le-Paven M De-Buyser J Henry Y Hartmann C Rode A
Abstract	The transmission of a structurally-hypervariable fraction of the mitochondrial genome has been studied in 42 F1 progenies obtained from reciprocal crosses between self-pollinated alloplasmic wheat plants regenerated after long-term somatic embryogenesis This fraction of the genome is maternally and stoichiometrically inherited In contrast, some additional restriction fragments specific to regenerated plants display a more complex mode of sexual transmission: one of the additional fragments was stoichiometrically and systematically inherited whereas two others were detected only in certain F1 hybrids Assuming that the detection, by Southern analysis, of such a fragment in regenerated plants is due to the amplification of a pre-existing substoichiometric molecule generated by the activation of a rare recombination event, our results suggest that the probability of detecting a novel fragment in the F1 hybrids could be determined by the length of the repeated sequence at which recombination occurs
Keyword	[ Hide all but 1 of 12 ] crosses crossing cytoplasmic-inheritance dna reorganization genetic markers mitochondrial dna mitochondrial genetics recombination regeneration restriction fragment length polymorphism somatic-embryogenesis triticum aestivum

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