Molecular Evolution within and between Self-Incompatibility Specificities
نویسندگان
چکیده
منابع مشابه
Evolution of self-incompatibility:
Whitehouse (1950): 1. Sudden rise of angiosperms during the Cretaceous period (144-65 million years ago) was due to the development of barriers for self-pollination forcing the flowering plants to out breed and resulted genetic variations and rapid expansion of the angiosperms. 2. 70% of the angiosperms are hermophrodite species, while no more than 5% dioecious. Such a high proportion of hermop...
متن کاملExpression of distinct self-incompatibility specificities in Arabidopsis thaliana.
The interplay of balancing selection within a species and rapid gene evolution between species can confound our ability to determine the functional equivalence of interspecific and intergeneric pairs of alleles underlying reproduction. In crucifer plants, mating specificity in the barrier to self-fertilization called self-incompatibility (SI) is controlled by allele-specific interactions betwee...
متن کاملIncompatibility and Speciation within & between Species
iii Acknowledgements I would like to use this space to thank and acknowledge all those who contributed their skill, knowledge, help, and mental and emotional support to make this thesis a reality. I thank Dr. Patrick Phillips for his mentorship and guidance in designing and carrying out this experiment, as well as his patience and support in helping me to analyze and synthesize my findings. I t...
متن کامل[Molecular mechanism of self-incompatibility in Brassica].
In Brassica species, self-incompatibility has been mapped genetically to a single chromosomal location. In this region several closely linked genes have been identified. One of them, S-locus receptor kinase (SRK), determines S haplotype specificity of the stigma and it's the key protein for SI reaction. The role of the S locus glycoprotein (SLG) gene remains unclear. In the last decade approxim...
متن کاملContrasted Patterns of Molecular Evolution in Dominant and Recessive Self-Incompatibility Haplotypes in Arabidopsis
Self-incompatibility has been considered by geneticists a model system for reproductive biology and balancing selection, but our understanding of the genetic basis and evolution of this molecular lock-and-key system has remained limited by the extreme level of sequence divergence among haplotypes, resulting in a lack of appropriate genomic sequences. In this study, we report and analyze the ful...
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ژورنال
عنوان ژورنال: Molecular Biology and Evolution
سال: 2009
ISSN: 1537-1719,0737-4038
DOI: 10.1093/molbev/msp224