The molecular basis of cytoplasmic male sterility and fertility restoration

Cytoplasmic male sterility (CMS) is a maternally inherited condition in which a plant is unable to produce functional pollen. It occurs in many plant species and is often associated with chimeric mitochondrial open reading frames. In a number of cases, transcripts originating from these altered open...

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Bibliographic Details
Published in:Trends in plant science 1998-05, Vol.3 (5), p.175-180
Main Authors: Schnable, Patrick S, Wise, Roger P
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
Biological and medical sciences
chimeric open-reading frames
Economic plant physiology
Flowering, floral biology, reproduction patterns
Fundamental and applied biological sciences. Psychology
Growth and development
mitochondrial mutants
mitrochondrial gene expression
nuclear restorers
nuclear/mitochondrial interactions
Plant physiology and development
Sexual reproduction
Vegetative and sexual reproduction, floral biology, fructification
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Summary:Cytoplasmic male sterility (CMS) is a maternally inherited condition in which a plant is unable to produce functional pollen. It occurs in many plant species and is often associated with chimeric mitochondrial open reading frames. In a number of cases, transcripts originating from these altered open reading frames are translated into unique proteins that appear to interfere with mitochondrial function and pollen development. Nuclear restorer ( Rf or Fr) genes function to suppress the deleterious effects of CMS-associated mitochondrial abnormalities by diverse mechanisms. There are now several well-characterized CMS systems, for which the mitochondrial sequences thought to be responsible have been described. Possible mechanisms by which nuclear restoration occurs in these systems can now be postulated.
ISSN:1360-1385
1878-4372
DOI:10.1016/S1360-1385(98)01235-7