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Pectin engineering: Modification of potato pectin by in vivo expression of an endo-1,4-β- d -galactanase
Open accessAbstract
Potato tuber pectin is rich in galactan (oligomer of β-1,4-linked galactosyl residues). We have expressed a fungal endo-galactanase cDNA in potato under control of the granule bound starch synthase promoter to obtain expression of the enzyme in tubers during growth. The transgenic plants displayed no altered phenotype compared with the wild type. Fungal endo-galactanase activity was quantified in the transgenic tubers, and its expression was verified by Western blot analysis. The effect of the endo-galactanase activity on potato tuber pectin was studied by Fourier transform infrared microspectroscopy, immuno-gold labeling, and sugar analysis. All analyses revealed alterations in pectin composition. Monosaccharide composition of total cell walls and isolated rhamnogalacturonan I fragments showed a reduction in galactosyl content to 30% in the transformants compared with the wild type. Increased solubility of pectin from transgenic cell walls by endo-polygalacturonase/pectin methylesterase digestion points to other changes in wall architecture.
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Cites
New method for quantitative determination of uronic acids
Blumenkrantz, N., & Asboe-Hansen, G. (1973) · Analytical Biochemistry · doi:10.1016/0003-2697(73)90377-1 · Cited by 7,140
Cited by
Pectins: structure, biosynthesis, and oligogalacturonide-related signaling
Ridley, B. L., O'Neill, M. A., & Mohnen, D. (2001) · Phytochemistry · doi:10.1016/s0031-9422(01)00113-3 · Cited by 1,912
Aspergillus Enzymes Involved in Degradation of Plant Cell Wall Polysaccharides
de Vries, R. P., & Visser, J. (2001) · Microbiology and Molecular Biology Reviews · doi:10.1128/mmbr.65.4.497-522.2001 · Cited by 1,041
Cell wall disassembly in ripening fruit
Brummell, D. A. (2006) · Functional Plant Biology · doi:10.1071/fp05234 · Cited by 961
Cell wall metabolism in fruit softening and quality and its manipulation in transgenic plants
Brummell, D. A., & Harpster, M. H. (2001) · Plant Molecular Biology · doi:10.1023/a:1010656104304 · Cited by 958
Cell wall metabolism in fruit softening and quality and its manipulation in transgenic plants
Brummell, D. A., & Harpster, M. H. (2001) · Plant Cell Walls · doi:10.1007/978-94-010-0668-2_18 · Cited by 874
Metadata
- Authors
- Oxenbøll Sørensen, S., Pauly, M., Bush, M., Skjøt, M., McCann, M. C., Borkhardt, B., & Ulvskov, P.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 2000-06-13
- Volume
- 97
- Issue
- 13
- Pages
- 7639-7644
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W2144431695
- Cited by
- 162
- References
- 1
- FWCI
- 14.71
- Type
- journal article
- Language
- en
- Open access
- green
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- Oxenbøll Sørensen, S., Pauly, M., Bush, M., Skjøt, M., McCann, M. C., Borkhardt, B., & Ulvskov, P. (2000). Pectin engineering: Modification of potato pectin by in vivo expression of an endo-1,4-β- d -galactanase. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.130568297
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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