Summary
An antiserum against glucuronoxylans (GXs) has been raised from a mouse. The dot-blot immunoassay and competitive inhibition test indicated that the antibodies could bind specifically to GXs. Therefore, the antiserum was used for immunogold labelling to investigate the localization of GXs in Japanese beech. Labelling of GXs was seen only in the secondary walls of xylem cells, but not in the primary walls or the middle lamella. GXs were evenly distributed in the secondary walls except for the outer part of the outer secondary-wall layer in which they were less abundant. The labelling density in each secondary-wall layer (S1, S2, and S3) increased during cell wall formation. This result strongly suggests that the deposition of GXs occurs in a penetrative way.
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Awano, T., Takabe, K. & Fujita, M. Localization of glucuronoxylans in Japanese beech visualized by immunogold labelling. Protoplasma 202, 213–222 (1998). https://doi.org/10.1007/BF01282549
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DOI: https://doi.org/10.1007/BF01282549