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 506380
Title The transcriptional activator GaaR of Aspergillus niger is required for release and utilization of d-galacturonic acid from pectin
Author(s) Alazi, Ebru; Niu, Jing; Kowalczyk, Joanna E.; Peng, Mao; Aguilar Pontes, Maria Victoria; Kan, Jan A.L. Van; Visser, Jaap; Vries, Ronald P. De; Ram, Arthur F.J.
Source FEBS Letters 590 (2016)12. - ISSN 0014-5793 - p. 1804 - 1815.
Department(s) Laboratory of Phytopathology
Publication type Refereed Article in a scientific journal
Publication year 2016
Abstract We identified the d-galacturonic acid (GA)-responsive transcriptional activator GaaR of the saprotrophic fungus, Aspergillus niger, which was found to be essential for growth on GA and polygalacturonic acid (PGA). Growth of the ΔgaaR strain was reduced on complex pectins. Genome-wide expression analysis showed that GaaR is required for the expression of genes necessary to release GA from PGA and more complex pectins, to transport GA into the cell, and to induce the GA catabolic pathway. Residual growth of ΔgaaR on complex pectins is likely due to the expression of pectinases acting on rhamnogalacturonan and subsequent metabolism of the monosaccharides other than GA.
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