Inhibition of Self-incompatible Pollen in Papaver rhoeas Involves a Complex Series of Cellular Events
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15 صفحه اولA potential signaling role for profilin in pollen of Papaver rhoeas.
Regulation of pollen tube growth is known to involve alterations in intracellular calcium levels and phosphoinositide signaling, although the mechanisms involved are unclear. However, it appears likely that pollination events involve a complex interplay between signaling pathways and components of the actin cytoskeleton in pollen. In many eukaryotic cells, actin binding proteins function as sti...
متن کاملSelf-incompatibility in Papaver: signalling to trigger PCD in incompatible pollen.
Sexual reproduction in higher plants uses pollination, involving interactions between pollen and pistil. Self-incompatibility (SI) prevents self-fertilization, providing an important mechanism to promote outbreeding. SI is controlled by the S-locus; discrimination occurs between incompatible pollen, which is rejected, while compatible pollen can achieve fertilization. In Papaver rhoeas, S prote...
متن کاملAntigenotoxic Capacity of Papaver Rhoeas L
Application of exogenic bioactive natural plant compounds with protective, anti-mutagenic and anti-genotoxic effects against various chemical and physical agents is one of the modern approaches for reduction of the mutagenic burden of cells. Objective: The present study aims to provide data on the cytoxic and genotoxic effects of Papaver rhoeas L. water leaf extract and its anti-cytotoxic and a...
متن کاملIdentification of residues in a hydrophilic loop of the Papaver rhoeas S protein that play a crucial role in recognition of incompatible pollen.
The self-incompatibility response involves S allele-specific recognition between stigmatic S proteins and incompatible pollen. This response results in pollen inhibition. Defining the amino acid residues within the stigmatic S proteins that participate in S allele-specific inhibition of incompatible pollen is essential for the elucidation of the molecular basis of the self-incompatibility respo...
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ژورنال
عنوان ژورنال: Annals of Botany
سال: 2000
ISSN: 0305-7364
DOI: 10.1006/anbo.1999.1034