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Changes of cell wall components in rapeseed roots in response to N deficiency. A, Cellulose and hemicellulose contents. B, Ionic bound pectin (ISP) and covalently bound pectin (CSP) contents. Rapeseed roots were collected at 14 d after high-N (7,500 μm N) and low-N (190 μm N) treatments. Data represent means ± sd (n = 4). Asterisks indicate significant differences between the two N treatments (Student’s t test, *, P < 0.05). DW, Dry weight.
