Distribution of other wall components in xyl1-4 and xxt1xxt2 SAM. A and B, Distribution of methylesterified pectin in xyl1-4 (A) and xxt1xxt2 (B) SAMs labeled with JIM7 antibody. C and D, Distribution of unesterified pectin in xyl1-4 (C) and xxt1xxt2 (D) SAMs labeled with LM19 antibody. E, Distribution of crystalline cellulose in xyl1-4 and xxt1xxt2 SAMs labeled with CBM3a antibody. Scale bars = 30 µm. F to I, HPAEC-PAD analysis of relative amounts of cellulose (F), homogalacturonan (G), methylesterified pectin (H), and other polysaccharides (I) in XyG mutant inflorescences. Results are shown as mean ± sd obtained from 3 replications.