ISSN:
1432-2242
Keywords:
Tomato
;
Lycopersicon peruvianum
;
Self-incompatibility
;
S-locus mutation
;
Pollination Style-ribonuclease (S-RNase)
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract A series of crosses between a naturally-occurring self-compatible accession ofLycopersicon peruvianum and a closely-related self-incompatible accession were used to demonstrate that the mutation to self-compatibility is located at the S-locus. Progeny of the crosses contain abundant style proteins of about 30 kDa that segregate with the S6and S7-alleles from the SI parent and the Sc-allele from the SC parent. The S6and S7-associated proteins have ribonuclease activity whereas the Sc-associated protein is not an active ribonuclease. This finding indicates that S-RNases are determinants of self-incompatibility in the style and that the ribonuclease activity is essential for their function.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01253997
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