A shift in developmental allometry underlies the transition to a multi-ovulate strategy from a single-ovulate ancestral state in Phlox (Polemoniaceae)
Bickner, B. M.; Kramer, E. M.
Show abstract
The number of seeds produced per flower is influenced by many pre- and post-pollination factors and varies enormously across taxa, from one to thousands. This diversity has obvious implications for fitness and often reflects a tradeoff between investment in allocation per seed vs. the number of seeds produced. However, we know remarkably little about the developmental basis for variation in seed number, which, at its origin, is fundamentally variation in ovule number. In this study, we have used between and within species variation in the genus Phlox to explore the developmental basis of a shift between an ancestral state of producing only one ovule per locule and a derived state of producing two or more ovules per locule. Our results demonstrate that a change in the allometric relationships between ovary size, ovule size and ovule number has repeatedly evolved in this genus. This is the first study to demonstrate a relationship between ovule primordia size and ovary size and the first to find that the relative size of ovule primordia correlates with ovule number variation.
Matching journals
The top 4 journals account for 50% of the predicted probability mass.
Similar papers in this journal
- Developmental evidence for parental conflict in driving Mimulus species barriers 95%
- YY males of the dioecious plant Mercurialis annua are fully viable but produce largely infertile pollen 95%
- Modularity and selection of nectar traits in the evolution of the selfing syndrome in Ipomoea lacunosa (Convolvulaceae) 94%
Similar papers in this journal
- Patterns of hybrid seed inviability in perennials of the Mimulus guttatus sp. complex reveal a potential role of parental conflict in reproductive isolation 94%
- Convergence and molecular evolution of floral fragrance after independent transitions to self fertilization 92%
- Resource allocation strategies and mechanical constraints drive the diversification of stick and leaf insect eggs 91%
Similar papers in this journal
- Testing the evolutionary potential of an alpine plant: Phenotypic plasticity in response to growth temperature far outweighs parental environmental effects and other genetic causes of variation 92%
- Aphid infestation induces plant-sex-specific changes in floral chemistry and pollinator behaviour in Silene latifolia 91%
- Live-cell imaging of early events following pollen perception in self-incompatible Arabidopsis thaliana 91%
Similar papers in this journal
- Ecological niche differentiation mediates near complete premating reproductive isolation within the Gladiolus carneus (Iridaceae) species complex. 96%
- Slippery flowers as a mechanism of defence against nectar-thieving ants 94%
- When morphology stands still: constrained floral evolution in a mega diverse legume genus 94%
"Similar papers" are the closest papers from that journal in the model's embedding space. They show what the match is built on, but the ranking comes mostly from a classifier over the whole training set, not from these examples alone.