The source of inorganic nitrogen has distinct effects on cell wall composition in Brachypodium distachyon
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The source of inorganic nitrogen has distinct effects on cell wall composition in Brachypodium distachyon. / Głazowska, Sylwia; Baldwin, Laetitia; Mravec, Jozef; Bukh, Christian; Fangel, Jonathan U.; Willats, William Gt; Schjoerring, Jan K.
In: Journal of Experimental Botany, Vol. 70, No. 21, 01.11.2019, p. 6461-6473.Research output: Contribution to journal › Journal article › peer-review
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TY - JOUR
T1 - The source of inorganic nitrogen has distinct effects on cell wall composition in Brachypodium distachyon
AU - Głazowska, Sylwia
AU - Baldwin, Laetitia
AU - Mravec, Jozef
AU - Bukh, Christian
AU - Fangel, Jonathan U.
AU - Willats, William Gt
AU - Schjoerring, Jan K.
PY - 2019/11/1
Y1 - 2019/11/1
N2 - Plants have evolved different strategies to utilize various forms of nitrogen (N) from the environment. While regulation of plant growth and development in response to application of inorganic N forms has been characterized, our knowledge about the effect on cell wall structure and composition is quite limited. In this study, we analysed cell walls of Brachypodium distachyon supplied with three types of inorganic N (NH4NO3, NO3-, or NH4+). Cell wall profiles showed distinct alterations in both the quantity and structures of individual polymers. Nitrate stimulated cellulose, but inhibited lignin deposition at the heading growth stage. On the other hand, ammonium supply resulted in higher concentration of mixed linkage glucans. In addition, the chemical structure of pectins and hemicelluloses was strongly influenced by the form of N. Supply of only NO3- led to alteration in xylan substitution and to lower esterification of homogalacturonan. We conclude that the physiological response to absorption of different inorganic N forms includes pleotropic remodelling of type II cell walls.
AB - Plants have evolved different strategies to utilize various forms of nitrogen (N) from the environment. While regulation of plant growth and development in response to application of inorganic N forms has been characterized, our knowledge about the effect on cell wall structure and composition is quite limited. In this study, we analysed cell walls of Brachypodium distachyon supplied with three types of inorganic N (NH4NO3, NO3-, or NH4+). Cell wall profiles showed distinct alterations in both the quantity and structures of individual polymers. Nitrate stimulated cellulose, but inhibited lignin deposition at the heading growth stage. On the other hand, ammonium supply resulted in higher concentration of mixed linkage glucans. In addition, the chemical structure of pectins and hemicelluloses was strongly influenced by the form of N. Supply of only NO3- led to alteration in xylan substitution and to lower esterification of homogalacturonan. We conclude that the physiological response to absorption of different inorganic N forms includes pleotropic remodelling of type II cell walls.
KW - Ammonium
KW - arabinoxylans
KW - Brachypodium distachyon
KW - cell wall
KW - cellulose
KW - ferulic acid
KW - homogalacturonan
KW - lignin
KW - mixed linkage glucan
KW - nitrate
U2 - 10.1093/jxb/erz388
DO - 10.1093/jxb/erz388
M3 - Journal article
C2 - 31504748
AN - SCOPUS:85075108364
VL - 70
SP - 6461
EP - 6473
JO - Journal of Experimental Botany
JF - Journal of Experimental Botany
SN - 0022-0957
IS - 21
ER -
ID: 234505933