Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 356658
Title Expression of an expansin carbohydrate-binding module affects xylem and phloem formation
Author(s) Obembe, O.; Jacobsen, E.; Visser, R.G.F.; Vincken, J.P.
Source African journal of biotechnology 6 (2007)14. - ISSN 1684-5315 - p. 1608 - 1616.
Department(s) Plant Breeding
Publication type Refereed Article in a scientific journal
Publication year 2007
Keyword(s) cell-wall extension - natriuretic peptides - gene-expression - swiss-model - growth - cellulose - proteins - plants - pollen - family
Abstract Expansins are believed to be involved in disrupting the non-covalent adhesion of cellulose to matrix polysaccharides, thereby promoting wall creep. We have targeted a putative potato expansin (EXPA) carbohydrate-binding module (CBM) to the cell walls of tobacco plants. Histological examinations and electron microscopy indicated that 30% of the xylem cells of the transgenic stems with high expression of the expansin CBM are wider (radial surface area) than those of the controls. Similarly, 37% of the xylem cells of the stems of the high expressers have thinner cell walls than those of the controls. There were no such phenotypes in the low and none expressers, as well as in the control plants. The transgenic tobacco plants expressing the potato expansin CBM did not exhibit marked change in plant morphology. Analysis of cellulose content in the stem cell walls was similar between the high expresser of the transgene and the control plants. Nonetheless, our results taken together demonstrate that expansin CBM alone can bring about changes in the plant cell walls.
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