Investigating the function of the LEUNIG regulatory complex in the basal land plant Marchantia polymorpha

Qiwei Li1, Edwin Lampugnani1, Eduardo Flores-Sandoval2, John Bowman2, Staffan Persson1 John Golz1.

Some 500 million years ago plants colonized the land, which had a major transformative effect on plant’s biosphere. Underlying the adaption to land were changes in gene regulation and transcriptional networks. However, it is unclear how transcriptional networks have evolved in land plants. My project focuses on the LEUNIG regulatory complex and its role in the development of the basal land plant Marchantia. Since LEUNIG lacks DNA binding domains, the recruitment to its DNA targets relies on interactions with the coregulator SEUSS and associated transcription factors (Lee & Golz, 2012; Sridhar et al., 2004). Auxin is a plant hormone that plays important roles in regulating plant growth and development. Previous work has suggested that LEUNIG and SEUSS are associated with auxin response factors and that together they mediate auxin responses (Franks et al., 2002; Pfluger & Zambryski, 2004; Lee et al., 2014). To determine the importance of these interactions, the involvement of LEUNIG and SEUSS in auxin signaling is being studied in Marchantia. 

Presenting Author:  Qiwei Li

Author Affiliation: 

1. School of Biosciences, the University of Melbourne, Royal Parade, Parkville Campus, Victoria 3010, Australia.

2. School of Biological Sciences, Monash University, Wellington Rd, Clayton Campus, Victoria 3800, Australia.