#  HUH Seminar Series - Andrea Berardi 

 



####  calendar\_today Date and Time 

 **April 2, 2024** 

 12:00PM - 01:00PM EDT 

####  pin\_drop Location 

 **22 Divinity Avenue, Cambridge, MA 02138, HUH Seminar Room 125 or livestream**  



 

 [ Register for this event arrow\_circle\_right ](https://harvard.zoom.us/meeting/register/tJIqcOCrqz4tHtWamSL9zT7IDdJH5EXfeYI8) 

 



 

 **Dr. Andrea Berardi  
Research Associate in Organismic and Evolutionary Biology, Harvard University  
Fellow of the Arnold Arboretum of Harvard University**

 **Title**: Characterizing red floral color evolution in polyploids

   ![Dr. Andrea Berardi in the field photographing flowers](/sites/g/files/omnuum6796/files/styles/hwp_1_1__360x360_scale/public/herbaria/files/andrea_tx_field_photo.jpeg?itok=y4Vj_eiz) 

 

**Abstract**: Determining how and why reproductive traits evolve between and within species is key to understanding patterns of speciation. In plants, both genome duplication as well as selection on floral traits, such as color, have been major drivers of angiosperm diversification. *Silene* (Caryophyllaceae) is a largely white- and pink-flowering diploid genus distributed throughout temperate regions. However, at least two independent genome duplications occurred in the genus expansion into North America. A novel red floral color arose in the North American polyploids, potentially arising from exposure to hummingbird pollination. Insights into how these red floral color and associated morphology arose as well as a revised phylogeny of North American *Silene* polyploids are made from target capture of herbarium specimens, gene silencing, and character mapping of floral pigments to answer the following questions: What is the most likely driver of floral color evolution in *Silene* - pollinator shifts, sympatric competition, abiotic factors, or polyploidy? **Join via Zoom livestream**: <https://harvard.zoom.us/meeting/register/tJIqcOCrqz4tHtWamSL9zT7IDdJH5EXfeYI8> (registration required)



 

 



 

 See also:- [ Herbaria Seminar Series ](/calendar/taxonomy/term/20301)
 
 

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