Flower-like heads from flower-like meristems: pseudanthium development in Davidia involucrata (Nyssaceae)

@article{ClassenBockhoff2018FlowerlikeHF,
  title={Flower-like heads from flower-like meristems: pseudanthium development in Davidia involucrata (Nyssaceae)},
  author={Regine Classen-Bockhoff and Melanie Arndt},
  journal={Journal of Plant Research},
  year={2018},
  volume={131},
  pages={443-458}
}
Flower-like inflorescences (pseudanthia) have fascinated botanists for a long time. [] Key Result With ongoing FUM expansion new space is generated which is immediately used by further FM fractionation. The heads have only staminate flowers or are andromonoecious with staminate and a single perfect flower in oblique position. All FMs lack perianth structures and fractionate a variable number of stamen primordia.
The ‘Male Flower’ of Ricinus communis (Euphorbiaceae) Interpreted as a Multi-Flowered Unit
TLDR
It is plausible to interpret the ‘male flower’ in Ricinus communis as a floral unit with multiple staminate flowers each reduced to a single anther, in accordance with the many examples of reduced flowers in the Euphorbiaceae.
Floral development: re-evaluation of its importance
TLDR
A review and five regular papers in this issue re-evaluate the importance of floral development and shed light on its essential linkage with the evolution of flower morphology.
Don't be fooled: false flowers in Asteraceae.
Reference gene and small RNA data from multiple tissues of Davidia involucrata Baill
TLDR
High-quality transcriptome reads from different floral tissues pooled from six individuals at two developmental stages using Illumina HiSeq technology and the construction of a high-quality reference gene set could provide a valuable annotated gene set for subsequent studies of D. involucrata functional genomics.
New year’s greetings 2019 from the Journal of Plant Research
  • K. Hikosaka
  • Environmental Science
    Journal of Plant Research
  • 2019
TLDR
This symposium shed light on the subject’s importance and essential linkage with flower morphology, and published a virtual issue, “Alpine and subalpine plant communities: importance of plant growth, reproduction, and community assemblage processes for changing environments”, edited by Dr. Koichi Takahashi.

References

SHOWING 1-10 OF 68 REFERENCES
Flower-like terminal structures in racemose inflorescences: a tool in morphogenetic and evolutionary research.
TLDR
Data presented here on terminal pseudanthia in Potamogeton and Ruppia support a pseudanthial evolutionary origin of reproductive units in the alismatid families Zannichelliaceae and Cymodoceaceae, and indicates that pseudanthium formation can provoke morphological novelties, perhaps due to new patterns of overlap between expression zones of regulatory genes and/or new spatial constraints.
Is LEAFY a useful marker gene for the flower–inflorescence boundary in the Euphorbia cyathium?
TLDR
Immunolocalizations of FLORICAULA/LEAFY (LFY), a protein associated with floral identity in many angiosperm species, were performed in developing cyathia of different species of Euphorbia, providing further evidence that the evolution of floral traits in pseudanthial inflorescences often involves expression of floral development genes in the inflorescence apex.
Developmental conditions for terminal flower production in apioid umbellets
TLDR
Since weaker and smaller individuals use to bear open umbellets, it is assumed that the relative nourishment conditions of the plants have an effect on the apical meristems geometry, that in turn would be capable or not to merge into a terminal flower.
The unique pseudanthium of Actinodium (Myrtaceae) - morphological reinvestigation and possible regulation by CYCLOIDEA-like genes
TLDR
The Actinodium inflorescence represents a novel type of pseudanthium with proximal branches mimicking ray flowers with showiness and branching pattern of the ray structures, in a manner analogous to the distantly related Asteraceae.
Floral development and evolution of capitulum structure in Anacyclus (Anthemideae, Asteraceae).
TLDR
Homogamous inflorescences display a uniform floral morphology and development, whereas the peripheral buds in heterogamous capitula display remarkable plasticity.
Inflorescence and floral ontogeny in asteraceae: A synthesis of historical and current concepts
The interpretation that all floral events on the capitulum take place in an acropetal or centripetal sequence is widely accepted, but many contradictory examples have been found. A non-acropetal
A CYCLOIDEA-like gene mutation in sunflower determines an unusual floret type able to produce filled achenes at the periphery of the pseudanthium
TLDR
This work evaluated whether tubular-like ray florets have a multifaceted set of floral traits and the presence of heteromorphic seeds in the turf inflorescence and found that corolla and ovary had both ray and disc floret characteristics but also displayed distinct identity traits.
Evolutionary Co-Option of Floral Meristem Identity Genes for Patterning of the Flower-Like Asteraceae Inflorescence1
TLDR
It is shown that Asteraceae inflorescences (flower heads, or capitula) resemble solitary flowers not only morphologically but also at the molecular level, and that GhLFY uniquely regulates the ontogeny of outer, expanded ray flowers but not inner, compact disc flowers, indicating that the distinction of different flower types in Asteraceae is connected with their independent evolutionary origins from separate branching systems.
Space matters: meristem expansion triggers corona formation in Passiflora.
TLDR
Corona formation in four species of Passiflora is investigated to understand the spatio-temporal conditions of its formation and to clarify homology of the corona elements.
...
1
2
3
4
5
...