Agrobacterium-mediated transformation of giant kelp gametophytes
Enhancing Agrobacterium-mediated transformation for giant kelp gametophytes to optimize gene and promoter traps for high throughput genetic analysis and improved transgene expression in saltwater environments.
Overview
This research focuses on advancing the Agrobacterium-mediated transformation of giant kelp gametophytes, a key method for improving gene and promoter traps. Giant kelp is a vital source of biomass for food and bioextracts, and enhancing its genetic transformation can significantly impact its agricultural and commercial applications. The project aims to improve transformation efficiency in saltwater and optimize transgene expression by developing constitutively expressed endogenous promoters.
Technical specifications
- The transformation protocol uses Agrobacterium tumefaciens to introduce T-DNA into kelp gametophytes.
- Hygromycin-resistant transformants are isolated and confirmed via PCR genotyping.
- High throughput methods involve culturing kelp on agar plates for streamlined isolation.
- Gene traps involve linearizing the Ti plasmid to capture kelp DNA, creating a gene library.
- Promoter traps use GFP and LacZ to capture kelp promoters, also forming a library.
- The libraries are transformed into Agrobacterium for further transformation into kelp gametophytes.
- Automation and genome sequencing enhance scalability and throughput.
Technology readiness level
The technology is at TRL 4, with laboratory validation of transformation protocols and initial gene and promoter library development. Future work aims to further scale and optimize these processes for broader applications.
About University of Southern California
USC is a large, comprehensive private research university in Los Angeles, anchored by two urban campuses and an academic health system. Industry engages through applied research institutes such as the Information Sciences Institute, co-located engineering and clinical facilities, and flexible sponsored research contracting. Proximity to the region’s aerospace, media, and biotech corridors provides access to testbeds, talent, and pilot-scale partners across the greater L.A. innovation economy. Research is supported by competitive federal funding from NIH, NSF, and other major agencies alongside significant industry-sponsored awards. A dedicated technology transfer office supports IP strategy, licensing, corporate partnerships, and venture formation.
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