ISSN:
1432-2145
Keywords:
Key words Brassicaceae
;
Pollen-stigma adhesion
;
SLR glycoproteins
;
Self-incompatibility
;
Unilateral incompatibility
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract The S-locus-related gene SLR1 is highly conserved and highly expressed in several species of the Brassicaceae family. Its function has not been determined, although several features would suggest a fundamental role in pollination. A second related gene (SLR2) is conserved and expressed in a subset of Brassica genotypes. We analysed the stigmatic expression of SLR1 and SLR2 genes among 11 different plants from various species or genera of the Brassicaceae and examined the extent of the pollen-stigma interaction during intraspecific, interspecific and intergeneric pollinations between them. Appropriate statistical tests on these variables (pollen adhesion, germination, penetration into the stigma, style and ovary, and SLR gene expression) showed that expression of SLR1 (but not SLR2) may be a factor in pollen-stigma adhesion. This hypothesis was supported by the observation of reduced pollen-stigma adhesion in transgenic B. napus plants modified for SLR1 expression.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s004970050091
