Abstract Detail

Hybrids and Hybridization

Zheng, Xingyu [1], Davies, Lizzy [1], Yuan, Weizheng [1], Puzey, Joshua [2], Conradi-Smith, Gregory D [3].

Reaction-Diffusion Dynamics of Complex Petal Pigmentation Patterning in Hybrid Mimulus.

A fundamental question in developmental biology is how self-organized spatial patterns form in natural systems. In 1952, Turing proposed the reaction-diffusion model, a simple but elegant theoretical mechanism in which two molecules interact and generate periodic pattern spontaneously. Ever since then, this model has helped explained a wide range of biological pattern formation like the stripes in zebrafish skin and digit development in vertebrates. However, very few such inquiries have been made in plants. Flowers of a hybrid F2 population between two Mimulus luteus sister species M. cupreus and M. l. variegatus exhibit stunningly complex pigment patterning and thus serves a perfect model organism to explore the preliminaries of the RD theoretical model. In this study, we developed a two-dimensional reaction diffusion model based on the transcriptional regulation dynamics of R2R3MYB activators and potential R3 repressors with customized spatial boundaries. Combined with quantitative trait measuring and genetic mapping, this study can shed light on the developmental complexity of petal pigment patterning in mimulus. Moreover, we provide a novel approach that can be generalized to other model systems to address spatial pattern formation in plants.

1 - the College of William and Mary, Department of Biology, CSU 6280, 110 Sadler Center, Williamsburg, VA, 23187, United States
2 - College Of William And Mary, Biology Dept., 540 Landrum Dr., Williamsburg, VA, 23185, United States
3 - the College of William and Mary, Department of Applied Science, 0275 , Integrated Science Center, Williamsburg, VA, 23187, United States

Keywords:
mimulus
pattern formation
reaction-diffusion
hybrid novelty .

Presentation Type: Poster
Session: P, Hybrids and Hybridization Posters
Location: Arizona Ballroom/Starr Pass
Date: Monday, July 29th, 2019
Time: 5:30 PM This poster will be presented at 6:15 pm. The Poster Session runs from 5:30 pm to 7:00 pm. Posters with odd poster numbers are presented at 5:30 pm, and posters with even poster numbers are presented at 6:15 pm.
Number: PHH002
Abstract ID:667
Candidate for Awards:None