ISSN:
1432-1432
Keywords:
Fraction I Protein
;
Ribulose Diphosphate Carboxylase
;
Nicotiana
;
Origin of Species
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Summary The polypeptide composition of Fraction I protein fromNicotiana digluta, a synthetic species which arose by chromosome doubling following the interspecific hybridization ofN.glutinosa andN.tabacum, has been examined by isoelectric focusing. The composition of the protein fromN.digluta, which was identical to the protein from the infertile F1 hybridN.glutinosa xN.tabacum, showed 3 polypeptides in the large subunit and 4 polypeptides in the small subunit. The large subunit polypeptides were identical to those fromN.glutinosa, the maternal parent in the original hybridization, whereas the small subunit polypeptides were a composite of the small subunit polypeptides from bothN.glutinosa andN.tabacum. This analysis demonstrates how the polypeptide composition of Fraction I protein evolves during the origin of new species ofNicotiana.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01732179
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