Compartmentalization of S-RNase and HT-B degradation in self-incompatible Nicotiana
Article Abstract:
Three events contributing to S-specific pollen recognition and rejection, S-RNase uptake and sequestration, an S-specific recognition step that affects HT-B stability and, in incompatible pollen, a self -reinforcing cytotoxic step that results in rejection, are recognized. Each step involves interactions between pollen and pistil factors and both S-RNase in an S-heterozygote contribute to rejection once the internal compartment breaks down.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2006
User Contributions:
Comment about this article or add new information about this topic:
Evidence for ecology's role in speciation
Article Abstract:
The study represents that the parallel build-up of mating incompabilities between stickleback populations can be largely accounted for by assortative mating based on one trait, body size, which evolves predictably according to environment. The results of this study reveal that speciation may arise largely as a by-product of ecological differences and divergent selection on a small number of phenotypic traits.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2004
User Contributions:
Comment about this article or add new information about this topic:
Pillow talk in plants
Article Abstract:
Flowering plants have a sophisticated mating imperatives just like humans, but they lack sensory faculties, are largely immobile, and rely on the vagaries of factors such as wind or insects to assist mating. An opportunity for a two-sided conversation in which a decision can be made about whether pollen should be accepted or rejected is presented.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2004
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Suppression of c-ras transformation by GTPase-activating protein. Survival pathways meet their end
- Abstracts: Contextual determinants of female-female mounting in laboratory rats
- Abstracts: Antipredatory behavior in lizards: interactions between group size and predation risk. part 2 Ultraviolet signals ultra-aggression in a lizard
- Abstracts: Reverse lateralization of visual discrimination abilities in the European starling. First records of oceanic dive profiles for leatherback turtles, Dermochelys coriacea, indicate behavioural plasticity associated with long-distance migration
- Abstracts: Social effects of space availability on the breeding behaviour of elephant seals in Patagonia. Evaluating the function of the male harbour seal, Phoca vitulina, roar through playback experiments