Occurrence of plastids in rye (Poaceae) sperm cells

Studies using classic genetics as well as restriction fragment length polymorphism analysis have demonstrated that rye, unlike most flowering plants, has biparental inheritance of both plastids and mitochondria. Yet, a previous in-depth ultrastructural study found no plastids in rye sperm cells, and...

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Bibliographic Details
Published in:American journal of botany 2000-08, Vol.87 (8), p.1189-1192
Main Authors: Mogensen, H. Lloyd, Rusche, Maxine Losoff
Format: Article
Language:English
Subjects:
biparental inheritance
Botany
classical genetics
Cytoplasmic inheritance
Deoxyribonucleic acid
DNA
DNA staining
Flowering plants
Flowers & plants
Genetics
Mitochondria
Mitochondrial genes
Organelles
Plant cells
Plant reproduction
Plants
Plastids
Poaceae
Reproductive Biology
Restriction fragment length polymorphism
Rye
Secale cereale
sperm cells
sperm dimorphism
Spermatozoa
three‐dimensional reconstruction
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Summary:Studies using classic genetics as well as restriction fragment length polymorphism analysis have demonstrated that rye, unlike most flowering plants, has biparental inheritance of both plastids and mitochondria. Yet, a previous in-depth ultrastructural study found no plastids in rye sperm cells, and DNA-specific staining revealed no cytoplasmic DNA in the male gametes of this plant. In the present study, we examined serial ultrathin sections of eight rye sperm cells (four pairs) and found unambiguous examples of plastids in all cases. The number of plastids per sperm cell varies from two to 12. The sperm of a pair may vary with regard to plastid number; however, these differences are not consistent among the sperm pairs examined.
ISSN:0002-9122
1537-2197
DOI:10.2307/2656656