Genotype-dependent differences in S12-RNase expression lead to sporadic self-compatibility

Genotype-dependent differences in S12-RNase expression lead to sporadic self-compatibility Sporadic self-compatibility, the occasional fruit formation after otherwise incompatible pollinations, has been observed in some S 12-containing genotypes of Solanum chacoense but not in others. We have sequenced this S 12 allele and analyzed its expression in four different genotypes. The S12-RNase levels were generally less abundant than those of other S-RNases present in the same plants. In addition, two-fold and five-fold differences in the amount of S12-RNase and S 12 RNA, respectively, were observed among the genotypes analyzed. A comparison with the genetic data showed that genotypes with the highest levels were fully and permanently self-incompatible, whereas those with the lowest levels were those in which sporadic self-compatibility had been observed. The mature protein contains four potential glycosylation sites and genotype-specific differences in the pattern of glycosylation are also observed. Our results suggest the presence of modifier genes which affect, in a genotype-dependent manner, the level of expression and the post-translational modification of the S12-RNase. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Molecular Biology Springer Journals

Genotype-dependent differences in S12-RNase expression lead to sporadic self-compatibility

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Publisher
Kluwer Academic Publishers
Copyright
Copyright © 2001 by Kluwer Academic Publishers
Subject
Life Sciences; Biochemistry, general; Plant Sciences; Plant Pathology
ISSN
0167-4412
eISSN
1573-5028
D.O.I.
10.1023/A:1006445120648
Publisher site
See Article on Publisher Site

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