کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7064437 | 1459825 | 2014 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Growth under field conditions affects lignin content and productivity in transgenic Populus trichocarpa with altered lignin biosynthesis
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
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![عکس صفحه اول مقاله: Growth under field conditions affects lignin content and productivity in transgenic Populus trichocarpa with altered lignin biosynthesis Growth under field conditions affects lignin content and productivity in transgenic Populus trichocarpa with altered lignin biosynthesis](/preview/png/7064437.png)
چکیده انگلیسی
This study evaluated the potential of transgenic Populus trichocarpa with antisense 4CL for reduced total lignin and sense Cald5H for increased S/G ratio in a short rotation woody cropping (SRWC) system for bioethanol production in the Southeast USA. Trees produced from tissue-culture were planted in the Coastal Plain, Piedmont, and Mountain regions of North Carolina, USA. Trees were observed for growth differences and biomass recorded for two coppices. Insoluble lignin and S/G ratio were determined by molecular beam mass spectroscopy after the second coppice. Survival, growth form, and biomass were very consistent within construct lines. Higher total lignin content and S/G ratio were positively correlated with total aboveground biomass. The low-lignin phenotype was not completely maintained in the field, with total lignin content increasing on average more than 30.0% at all sites by the second coppice The capacity to upregulate lignin in the event of environmental stress may have helped some low-lignin lines to survive. More research focused on promising construct lines in appropriate environmental conditions is needed to clarify if a significant reduction in lignin can be achieved on a plantation scale, and whether that reduction will translate into increased efficiency of enzymatic hydrolysis.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biomass and Bioenergy - Volume 68, September 2014, Pages 228-239
Journal: Biomass and Bioenergy - Volume 68, September 2014, Pages 228-239
نویسندگان
Anna T. Stout, Aletta A. Davis, Jean-Christophe Domec, Chenmin Yang, Rui Shi, John S. King,