Water and nitrogen are two limiting resources for biomass production of terrestrial vegetation. Palmroth et al. employ optimization theory to quantify interactions between marginal water and nitrogen resource use...
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 has been discovered in Torenia fournieri. Kanaoka et al. study...
Processes regulating pollen germination, growth, guidance and sperm delivery are considered major hybridization controls in nature and contribute to reproductive success as well as to isolation and speciation...