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Structural and putative regulatory genes involved in cellulose synthesis in Rhizobium leguminosarum bv. trifolii
Swedish University of Agricultural Sciences, SLU, Department of Microbiology.
Swedish University of Agricultural Sciences, SLU, Department of Microbiology.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Biochemistry and Organic Chemistry.
Swedish University of Agricultural Sciences, SLU, Department of Microbiology.
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1999 (English)In: Microbiology, ISSN 1350-0872, E-ISSN 1465-2080, Vol. 145, 1253-1262 p.Article in journal (Refereed) Published
Abstract [en]

Six genes involved in cellulose synthesis in Rhizobium leguminosarum bv. trifolii were identified using Tn5 mutagenesis. Four of them displayed homology to the previously cloned and sequenced Agrobacterium tumefaciens cellulose genes celA, celB, celC and celE. These genes are organized similarly in R. leguminosarum bv. trifolii. In addition, there were strong indications that two tandemly located genes, celR1 and celR2, probably organized as one operon, are involved in the regulation of cellulose synthesis. The deduced amino acid sequences of these genes displayed a high degree of similarity to the Caulobacter crescentus DivK and PleD proteins that belong to the family of two-component response regulators. This is to our knowledge the first report of genes involved in the regulation of cellulose synthesis. Results from attachment assays and electron microscopic studies indicated that cellulose synthesis in R. leguminosarum bv. trifolii is induced upon close contact with plant roots during the attachment process.

Place, publisher, year, edition, pages
1999. Vol. 145, 1253-1262 p.
Keyword [en]
Rhizobium leguminosarum bv, trifolii, cellulose synthesis, two-component regulation
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:uu:diva-28290DOI: 10.1099/13500872-145-5-1253OAI: oai:DiVA.org:uu-28290DiVA: diva2:56186
Available from: 2008-10-17 Created: 2008-10-17 Last updated: 2017-12-07Bibliographically approved

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