tailieunhanh - Genetic Engineering Basics New Applications and Responsibilities Part 7

Tham khảo tài liệu 'genetic engineering basics new applications and responsibilities part 7', khoa học tự nhiên, công nghệ sinh học phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 110 Genetic Engineering - Basics New Applications and Responsibilities characterized for transformation efficiency and lignin content Table 4 . Plants having antisense construct of C4H CCR CAD and POX showing stunted growth. But in case of 4CL transformants no such morphological appearance were observed. 5. Conclusions Thanks to years of painstaking research in to the chemistry of lignin it is now seen as a potential target for genetic engineering of plants mostly aggravated by its industrial and agricultural applications. However much of our understanding of lignin biochemistry comes from studies of model plants like Arabidopsis Tobacco Poplar etc. Furthermore this technology needs to be transferred to other plant species. Leucaena a multiple utility leguminous tree is targeted for ongoing research to alter its lignin content due to its importance in paper and pulp industry in India. Keeping this in mind attempts were made to improve pulp yielding properties by genetically engineering lignin metabolism so as to gratify the demand of such industries. The results presented here highlight the challenges and limitations of lignin down-regulation approaches it is essential but difficult to find a level of lignin reduction that is sufficient to be advantageous but not so severe as to affect normal growth and development of plants. These findings may contribute in the development of Leucaena with altered lignin composition content having higher lignin extractability making the paper pulp industry more economic and eco-friendly. The multi-purpose benefits of lignin down regulation in this plant can also be extrapolated to improved saccharification efficiency for biofuel production and forage digestibility apart from enhanced pulping efficiency. Although genetic engineering promises to increase lignin extraction and degradability during the pulping processes the potential problems associated with these techniques like increased pathogen susceptibility phenotypic .

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