A Small Multigene Hydroxyproline-O-Galactosyltransferase Family Functions in Arabinogalactan-Protein Glycosylation, Growth, and Development in Arabidopsis

December 2015 in “ BMC plant biology ”

Debarati Basu, Lü Tian, Wuda Wang, Shauni Bobbs, Hayley Herock, Andrew Travers, Allan M. Showalter

root hair growth seed coat mucilage AGP-specific Hyp-O-GALT activity arabinogalactan-proteins GALT3 GALT4 GALT6 GALT2 GALT5 Golgi vesicles β-Gal-Yariv reagent AGP activity AGPs

TLDR Three genes in Arabidopsis are important for plant growth and development by affecting sugar attachment to proteins.

The study investigated the role of a small multigene family of hydroxyproline-O-galactosyltransferases (HPGTs) in the glycosylation of arabinogalactan-proteins (AGPs) and their impact on growth and development in Arabidopsis. Researchers identified and characterized several HPGT genes, showing their involvement in adding galactose to AGPs. Mutant plants with disrupted HPGT genes exhibited altered AGP glycosylation, leading to defects in root and shoot growth, seed set, pollen tube growth, and leaf senescence. The findings highlighted the importance of HPGT-mediated glycosylation in the proper functioning of AGPs and normal plant development.

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Research cited in this study

3 / 3 results

research Two Hydroxyproline Galactosyltransferases, GALT5 and GALT2, Function in Arabinogalactan-Protein Glycosylation, Growth, and Development in Arabidopsis

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research Two Hydroxyproline Galactosyltransferases, GALT5 and GALT2, Function in Arabinogalactan-Protein Glycosylation, Growth, and Development in Arabidopsis

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A Small Multigene Hydroxyproline-O-Galactosyltransferase Family Functions in Arabinogalactan-Protein Glycosylation, Growth, and Development in Arabidopsis

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