annals-of-botany
The presence of co-flowering species can alter pollinator foraging behaviour and positively or negatively affect reproductive success of individual species. Liao et al. investigate interactions
annals-of-botany
Wild tobacco, Nicotiana debneyi, has fungal resistance, but sexual incompatibility prevents introgression of its resistance genes into the ornamental tobacco, N. × sanderae. Patel et al. show
annals-of-botany
Growth decline with age in trees is hypothesized to be an effect of carbon limitation. By assessing carbon reserves and isotopes at different ontogenetic stages in
annals-of-botany
Olive trees (Olea europaea) provide a good model to study the origin of cultivars due to their long lifespan. Diez et al. use SSR markers to
annals-of-botany
In grasses, self-incompatibilty (SI) is based on two loci, S and Z, but the mechanisms are much less well understood relative to other gametophytic SI
annals-of-botany
The common primrose, Primula vulgaris, exhibits floral heteromorphy, with the two flower types being hermaphrodite and exhibiting reciprocal positions of male and female reproductive structures. Li
annals-of-botany
Studies have suggested that plant sexual reproduction is particularly vulnerable to climate change, and a number of ecologically and evolutionarily relevant genes have recently been identified.
annals-of-botany
S-RNase-based self-incompatibility (SI) occurs in the Solanaceae, Rosaceae and Plantaginaceae, with S-RNases determining the specificity of pollen rejection in the pistil and
annals-of-botany
Variation in mating systems is common across angiosperm taxa, leading to a trade-off between inbreeding avoidance and reproductive assurance. Tedder et al. examine European populations
annals-of-botany
Erysimum capitatum (Brassicaceae) is a widespread and variable plant species with generalized pollination that is attacked by a number of herbivores. Lay et al. find that
annals-of-botany
Pollen–pistil interactions are an essential prelude to fertilization in angiosperms, and self-incompatibility (SI) is the best understood of these at a molecular level. Allen
annals-of-botany
A key factor of pollen-tube attraction to an ovule is that it is species-specific, and recently a family of secreted proteins with attractant properties