Recently, the Energy Crop Molecular Breeding Research Group led by Fu Chunxiang, a researcher at the Qingdao Institute of Bioenergy and Processes, Chinese Academy of Sciences, has achieved research on the mechanism of lignin synthesis through the screening of characteristic resources, identification of mutants and the regulation of lignin gene engineering New achievements have obtained plant resources with high cell wall degradation efficiency and potential commercialization value.
Due to the presence of lignin in the cell walls of vascular plants, it is difficult to make full use of polysaccharides with important economic value, such as cellulose and hemicellulose, which restrict the production efficiency of animal husbandry, papermaking and bioenergy. It also caused resource waste and environmental pollution.
Lignin is mainly found in straw and wood. Every year, all kinds of straw produced in China's agricultural production are as high as 700 million tons, while corn straw is about 350 million tons. How to turn waste into treasure and use corn and other crop stalks with high efficiency and low cost has become a research and development hotspot in the field of biomass resource utilization in countries all over the world.
The research of Fu Chunxiang's team shows that by regulating the metabolism of the methyl donor coupled to the lignin synthesis pathway, it can significantly change the synthesis of lignin and improve the conversion and utilization efficiency of the cell wall.
This research work has deepened people's understanding of the regulation of lignin synthesis and provided a new research and development direction for the current regulation of lignin synthesis. The genetic resources, technical systems and germplasm resources related to the research work have also formed independent intellectual property rights and have filed for patent applications.
In the future, further in-depth digestion and collocation of the above genetic resources will help to breed more new varieties of energy and feed crops with low cost and high conversion efficiency through molecular design breeding.
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