Systematic Tools for Reprogramming Plant Gene Expression in a Simple Model, Marchantia polymorpha.

Area of Science:

• Plant Biology
• Synthetic Biology
• Bioengineering

Background:

• Marchantia, a liverwort, offers a unique model for plant bioengineering due to its simple morphology, haploid life cycle, and open development.
• Existing methods for plant research often require specialized facilities, limiting accessibility.
• There is a need for standardized tools and techniques to facilitate plant bioengineering research.

Purpose of the Study:

• To present the OpenPlant toolkit, a comprehensive set of resources and techniques for developing Marchantia as a plant bioengineering testbed.
• To introduce novel methods for Marchantia propagation and maintenance, reducing the need for glasshouse facilities.
• To establish standardized DNA elements and promoter sequences for use in Marchantia bioengineering.

Main Methods:

• Development of efficient axenic propagation and maintenance techniques for Marchantia.
• Creation of robust Loop assembly vector systems for nuclear and chloroplast transformation and genome editing.
• Screening of transcriptomic data to identify and validate novel constitutive promoter elements.

Main Results:

• Marchantia can be easily propagated and amplified, facilitating large-scale experiments.
• Established standardized DNA elements and vector systems for nuclear and chloroplast engineering.
• Identified and validated new constitutive promoter elements through transcriptomic analysis and in vivo testing.
• The OpenPlant toolkit provides accessible resources for plant bioengineering.

Conclusions:

• The OpenPlant toolkit enables Marchantia to serve as an accessible and effective testbed for plant bioengineering and synthetic biology.
• The developed resources and techniques simplify genetic manipulation and analysis in Marchantia.
• This initiative promotes the establishment of common standards in plant synthetic biology research.