External nitrogen input affects pre- and post-harvest cell wall composition but not the enzymatic saccharification of wheat straw
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External nitrogen input affects pre- and post-harvest cell wall composition but not the enzymatic saccharification of wheat straw. / Baldwin, Laetitia Andrée; Glazowska, Sylwia Emilia; Mravec, Jozef; Fangel, Jonatan Ulrik; Zhang, Heng; Felby, Claus; Willats, William George Tycho; Schjørring, Jan Kofod.
In: Biomass & Bioenergy, Vol. 98, 2017, p. 70-79.Research output: Contribution to journal › Journal article › peer-review
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TY - JOUR
T1 - External nitrogen input affects pre- and post-harvest cell wall composition but not the enzymatic saccharification of wheat straw
AU - Baldwin, Laetitia Andrée
AU - Glazowska, Sylwia Emilia
AU - Mravec, Jozef
AU - Fangel, Jonatan Ulrik
AU - Zhang, Heng
AU - Felby, Claus
AU - Willats, William George Tycho
AU - Schjørring, Jan Kofod
PY - 2017
Y1 - 2017
N2 - Wheat is one of the most important crops for food and feed and its straw is a potential feedstock for biorefinery purposes. Nitrogen (N) is an essential input factor in wheat agriculture but no information is available on how it affects straw composition during maturation and at harvest. To investigate this, we conducted a large scale field experiment in which wheat plants were cultivated at three levels of externally applied N. The plants were harvested at different stages of maturation, spanning green straw at heading (ear emergence) to fully yellow straw at final maturity. Defined parts of the straw were analyzed for cell wall characteristics relevant for further biomass processing. The straw N concentration corroborated with the level of N input, but the yield of straw biomass was not largely affected. High N treatment modified cell wall composition, namely increased abundance of arabinogalactan proteins (AGPs) and lignin in the mature straw. A general decrease in pectin methylesterification as well as in ferulate linkages was also observed. Importantly, no significant changes in crystalline cellulose and silicon concentration or in saccharification efficiency were observed among the different N treatments. Nitrogen fertilization partially alters the cell wall composition in wheat straw but is not a limiting factor in wheat biomass refinery.
AB - Wheat is one of the most important crops for food and feed and its straw is a potential feedstock for biorefinery purposes. Nitrogen (N) is an essential input factor in wheat agriculture but no information is available on how it affects straw composition during maturation and at harvest. To investigate this, we conducted a large scale field experiment in which wheat plants were cultivated at three levels of externally applied N. The plants were harvested at different stages of maturation, spanning green straw at heading (ear emergence) to fully yellow straw at final maturity. Defined parts of the straw were analyzed for cell wall characteristics relevant for further biomass processing. The straw N concentration corroborated with the level of N input, but the yield of straw biomass was not largely affected. High N treatment modified cell wall composition, namely increased abundance of arabinogalactan proteins (AGPs) and lignin in the mature straw. A general decrease in pectin methylesterification as well as in ferulate linkages was also observed. Importantly, no significant changes in crystalline cellulose and silicon concentration or in saccharification efficiency were observed among the different N treatments. Nitrogen fertilization partially alters the cell wall composition in wheat straw but is not a limiting factor in wheat biomass refinery.
KW - Biomass
KW - Cell wall composition
KW - Nitrogen
KW - Saccharification
KW - Wheat straw
U2 - 10.1016/j.biombioe.2017.01.009
DO - 10.1016/j.biombioe.2017.01.009
M3 - Journal article
AN - SCOPUS:85009473771
VL - 98
SP - 70
EP - 79
JO - Biomass & Bioenergy
JF - Biomass & Bioenergy
SN - 0961-9534
ER -
ID: 179271081