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On the mechanism of cytoplasmic male sterility in the 447 line of Vicia faba by Tom Turpen; Stephen J. Garger; Laurence K. Grill is a Agricultural and Biological Sciences article available to read on EtoBox.

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The trait of cytoplasmic male sterility, expressed in plants bearing the 447 cytoplasm of Viciafaba, is uniquely and positively correlated with the presence of a linear double-stranded RNA molecule (dsRNA) 16.7 kb in size. Restriction enzyme digestion profiles of mitochondrial DNA isolated from fertile and cytoplasmic malesterile (CMS) lines do show a limited number of specific differences in fragment intensities and mobilities. However, mitochondria isolated from the progeny of the cross CMS x Restorer line contain DNA with an identical restriction profile as the male-sterile parent: moreover, subsequent generations are completely and permanently fertile, even upon segregation of the nuclear restoration gene. Southern hybridizations, using cDNA clones as probes, reveal homology between the CMS-associated dsRNA and the nuclear genome of both sterile and fertile lines. The regions cloned, representing approximately 22% of the total dsRNA sequence, show no homology to organdie DNA. We have not been able to stably transmit the dsRNA to fertile lines of V. faba or any other plant species, using a variety of standard virological techniques.

Who reads On the mechanism of cytoplasmic male sterility in the 447 line of Vicia faba?

Author

Tom Turpen; Stephen J. Garger; Laurence K. Grill

Publisher

Springer; Springer-Verlag; Kluwer Academic Publishers; Springer Science and Business Media LLC; Society for Mining, Metallurgy and Exploration Inc. (ISSN 0167-4412)

Published

1988

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)