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The Journal of Heredity 1978:69(2):117-120
© 1978 The American Genetic Association 69:117-120

research-article

The reaction of Nicotiana species to tentoxin

A new technique for identifying the cytoplasmic parent

L. G. BURK, and R. D. DURBIN

The authors are, respectively, research geneticist, Tobacco Research Laboratory, Oxford, North Carolina 27565, and research plant pathologist, Plant Disease Resistance Research Unit, Department of Plant Pathology, University of Wisconsin, Madison, Wisconsin 53706

Abstract

The cytoplasm of Nicotiana species has been shown to be the site of a sensitive or insensitive response to tentoxin, a cyclic tetrapeptide. This cytoplasmic trait can be used to identify the maternal parent in an interspecific hybrid wherever the parents have different reactions to tentoxin. Under certain circumstances it can also monitor the presence of cytoplasm of a nonrecurrent parent in successive generations of a backcross-derived line that is being substituted with the genome of another species. The tentoxin response can also be used to support hypotheses or to reexamine speculations, based on cytotaxonomic and biochemical evidence, about relation ships among extant Nicotiana species.


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A Avni, J. Anderson, N Holland, J. Rochaix, Z Gromet-Elhanan, and M Edelman
Tentoxin sensitivity of chloroplasts determined by codon 83 of beta subunit of proton-ATPase
Science, August 28, 1992; 257(5074): 1245 - 1247.
[Abstract] [PDF]


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