Plant and Animal Genome XXVII Conference

Elomaa, P. (Speaker: Presenter)

Activity: Participating in or organising an event typesOrganisation and participation in conferences, workshops, courses, seminars

Description

Invited speaker: Patterning of head-like inflorescences in Asteraceae

Abstract:
Patterning of head-like inflorescences in Asteraceae
Teng Zhang1, Mikolaj Cieslak2, Feng Wang1, Suvi K. Broholm1, Teemu H. Teeri1, Przemyslaw Prusinkiewicz2, Paula Elomaa1
1Department of Agricultural Science, Viikki Plant Science Centre, University of Helsinki, P.O. Box 27, FIN-00014 Helsinki, Finland
2University of Calgary, 2500 University Dr NW, Calgary T2N 1N4, Canada.
The key question in biology is how organisms generate reproducible patterns in a highly precise manner. In plants, the regularity is visible in the architecture of inflorescences that may vary from a single flower to large flower clusters, and is thus one of the major determinants of crop yield and reproductive success of plants. Still, the development and evolution of distinct inflorescence forms remain poorly understood. The unique feature in the Asteraceae plant family is that their inflorescence forms a pseudanthium, or false flower. While it superficially mimics a solitary flower, it is actually a tightly packed flower head (capitulum) composed of morphologically and structurally distinct types of flowers. The transference of a flower-like identity into an inflorescence is considered as the key innovation for the diversification of this largest family of flowering plants. Using gerbera (Gerbera hybrida) and sunflower (Helianthus annuus) as models, we are exploring the dynamic networks of cellular and molecular interactions that affect early patterning of the inflorescence meristem, establishment of spiral phyllotaxis and signaling the regulates determinacy of the capitulum and leads to differentiation of distinct flower types. The knowledge is used to refine the mathematical models to understand capitulum organization.
Period12 Jan 2019 - 16 Jan 2019
Event typeConference
Conference numberXXVII
LocationSan Diego, United States
Degree of RecognitionInternational