U
Ursula Wieneke
Researcher at Max Planck Society
Publications - 17
Citations - 1442
Ursula Wieneke is an academic researcher from Max Planck Society. The author has contributed to research in topics: Rhizobium & Gene. The author has an hindex of 15, co-authored 17 publications receiving 1408 citations.
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Rhizobium NodB protein involved in nodulation signal synthesis is a chitooligosaccharide deacetylase
TL;DR: The data show that the NodB protein of Rhizobium meliloti deacetylates the nonreducing N-acetylglucosamine residue of chitooligosaccharides, which may be a necessary requirement for attachment of the fatty acyl chain in the pathway of Nod factor synthesis.
Journal ArticleDOI
Modification of phytohormone response by a peptide encoded by ENOD40 of legumes and a nonlegume.
Karin van de Sande,Katharina Pawlowski,Inge Czaja,Ursula Wieneke,Jeff Schell,Jürgen Schmidt,Richard Walden,M. Matvienko,Joan Wellink,Ab van Kammen,Henk Franssen,Ton Bisseling +11 more
TL;DR: The gene ENOD40 is expressed during early stages of legume nodule development and appears to act as plant growth regulators, while a homolog was isolated from tobacco, which encodes an oligopeptide of about 10 amino acids.
Journal ArticleDOI
Organization, structure and symbiotic function of rhizobium meliloti nodulation genes determining host specificity for alfalfa
Beatrix Horvath,Eva Kondorosi,Michael John,Jürgen Schmidt,I. Török,Zoltan Györgypal,Ilona Barabas,Ursula Wieneke,Jeff Schell,Adam Kondorosi +9 more
TL;DR: In R. meliloti, four nodulation genes determining plant host-range specificity and have been identified hsnABC and D, which determine plant-specific infection through root hairs: hsnD is required for host-specific root hair curling and nodule initiation while the hsn ABC genes control infection thread growth from the root hairs.
Biosynthesis of lipooligosaccharide nodulation factors: Rhizobium NodA protein is involved in N-acylation of the chitooligosaccharide backbone (nitrogen fixation/common nod genes/Rhizobium meliloti)
TL;DR: In this article, the role of NodA protein in lipooli-gosaccharide biosynthesis was elucidated, where a radiolabeled tet- rasaccharides precursor carrying an amino group as a potential attachment site for N-acylation at the nonreducing glucosamine residue was presented.
Journal ArticleDOI
2-DE proteomic approach to the Botrytis cinerea secretome induced with different carbon sources and plant-based elicitors.
Francisco Javier Fernández-Acero,Thomas Colby,Anne Harzen,María Carbú,Ursula Wieneke,Jesús M. Cantoral,Jürgen Schmidt +6 more
TL;DR: The observed increases in secretion of proteins with established virulence‐related functions indicate that this in vitro‐induction/proteome‐mining approach is a promising strategy for discovering new pathogenicity factors and dissecting infection mechanisms in a discrete fashion.