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Techniques for the Evolution of Robust Pentose-fermenting Yeast for Bioconversion of Lignocellulose to Ethanol
Published on: October 24, 2016
[Two optimized transformation protocols for a cellulose-utilizing fungus Chaetomium globosum NK-102]
Xiaoran Hao1, Yuan Ji, Huang Chen
1National Key Program of Microbiology, Department of Microbiology, College of Life Sciences, Nankai University, Tianjin 300071, China. hxrr_563@163.com
Wei Sheng Wu Xue Bao = Acta Microbiologica Sinica
|January 21, 2012
Summary
We developed efficient transformation methods for Chaetomium globosum NK-102 using PEG-mediated protoplast and Agrobacterium tumefaciens EHA105. These methods provide a basis for creating mutant strains that efficiently utilize cellulose.
Area of Science:
- Mycology
- Molecular Biology
- Genetic Engineering
Background:
- Chaetomium globosum is a fungus with potential for cellulose utilization.
- Efficient genetic manipulation methods are crucial for strain improvement.
Purpose of the Study:
- To develop and optimize transformation methods for Chaetomium globosum NK-102.
- To establish a foundation for creating mutant strains with enhanced cellulose-degrading capabilities.
Main Methods:
- Construction of the plasmid pUCATPH-Pgap for enhanced transformation.
- Establishment of polyethylene glycol (PEG)-mediated protoplast transformation.
- Implementation of Agrobacterium tumefaciens EHA105-mediated transformation.
Main Results:
- The pUCATPH-Pgap plasmid yielded the highest transformation efficiency.
- PEG-mediated protoplast transformation achieved 3-5 transformants/µg DNA.
- Agrobacterium-mediated transformation resulted in 3.2 x 10^2 transformants/10^7 spores, with stable integration confirmed by Southern blot.
Conclusions:
- Developed robust transformation systems for Chaetomium globosum NK-102.
- These systems enable the selection and development of C. globosum mutants for improved cellulose utilization.
