Výsledky vyhledávání - "Guy G. Orgambide"

Glycoconjugate and lipid components ofRhizobium'hedysari' IS123, a root-nodule symbiont of the stress-tolerant legumeHedysarum coronarium

Autor: Guy G. Orgambide, Andrea Squartini, Marco Nuti, Saleela Philip-Hollingsworth, E. Tola, Robert A. Cedergren, Frank B. Dazzo, Rawle I. Hollingsworth

Publikováno v: Canadian Journal of Microbiology. 42:340-345

We have examined the diversity of glycoconjugates and cellular lipids of Rhizobium "hedysari" IS123, a bacterial symbiont that specifically nodulates the drought-tolerant forage legume Hedysarum coronarium. IS123 develops a complete capsule consistin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2f08f3e613ff2858d5efffa6040589cd
https://doi.org/10.1139/m96-050

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Structurally diverse chitolipooligosaccharide Nod factors accumulate primarily in membranes of wild-type Rhizobium leguminosarum biovar trifolii

Autor: Rawle I. Hollingsworth, Dazzo Fb, Lee J, Guy G. Orgambide

Publikováno v: Biochemistry. 34:3832-3840

The general view on Rhizobium chitolipooligosaccharides (CLOS) is that they are made in very low levels as diffusible molecules and are primarily secreted by the bacteria into the extracellular milieu where they interact with the host. However, the s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c691fec35fa2035d2451f31252494e7
https://doi.org/10.1021/bi00011a041

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Flavone-enhanced accumulation and symbiosis-related biological activity of a diglycosyl diacylglycerol membrane glycolipid from Rhizobium leguminosarum biovar trifolii

Autor: R I Hollingsworth, Frank B. Dazzo, Guy G. Orgambide, Saleela Philip-Hollingsworth

Publikováno v: Journal of Bacteriology. 176:4338-4347

Rhizobium leguminosarum bv. trifolii is the bacterial symbiont which induces nitrogen-fixing root nodules on the leguminous host, white clover (Trifolium repens L.). In this plant-microbe interaction, the host plant excretes a flavone, 4',7-dihydroxy

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e4a581b2cba64d380996019afb4432b7
https://doi.org/10.1128/jb.176.14.4338-4347.1994

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Modulation of development, growth dynamics, wall crystallinity, and infection sites in white clover root hairs by membrane chitolipooligosaccharides from Rhizobium leguminosarum biovar trifolii

Autor: Saleela Philip-Hollingsworth, Guy G. Orgambide, Kenneth O. Ninke, Janet Salzwedel, Rawle I. Hollingsworth, Frank B. Dazzo

Publikováno v: Journal of bacteriology. 178(12)

We used bright-field, time-lapse video, cross-polarized, phase-contrast, and fluorescence microscopies to examine the influence of isolated chitolipooligosaccharides (CLOSs) from wild-type Rhizobium leguminosarum bv. trifolii on development of white

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f4c70db0bc74fecf2b3e5e5f634c970f
https://pubmed.ncbi.nlm.nih.gov/8655563

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Subnanomolar concentrations of membrane chitolipooligosaccharides from Rhizobium leguminosarum biovar trifolii are fully capable of eliciting symbiosis-related responses on white clover

Autor: Rawle I. Hollingsworth, Guy G. Orgambide, Saleela Philip-Hollingsworth, Pedro F. Mateos, Frank B. Dazzo

Publikováno v: Current Issues in Symbiotic Nitrogen Fixation ISBN: 9789401064040

Axenic seedling bioassays were performed on white clover, vetch, and alfalfa to assess the variety and dose responses of biological activities exhibited by membrane chitolipooligosaccharides (CLOSs) from wild type Rhizobium leguminosarum bv. trifolii

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d2db39de68ac9df1d5a411dd2ac3f8e0
https://doi.org/10.1007/978-94-011-5700-1_13

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Mutation or increased copy number of nodE has no effect on the spectrum of chitolipooligosaccharide nod factors made by Rhizobium leguminosarum bv. trifolii

Autor: Rawle I. Hollingsworth, Guy G. Orgambide, Saleela Philip-Hollingsworth, James J Bradford, Damon K. Smith, Frank B. Dazzo

Publikováno v: The Journal of biological chemistry. 270(36)

The bacterial gene nodE is the key determinant of host specificity in the Rhizobium leguminosarum-legume symbiosis and has been proposed to determined unique polyunsaturated fatty acyl moieties in chitolipooligosaccharides (CLOS) made by the bacteria

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8265857fd7ed4a19f0325d9aac325808
https://pubmed.ncbi.nlm.nih.gov/7673121

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Surface polysaccharide mutants of Rhizobium sp. (Acacia) strain GRH2: major requirement of lipopolysaccharide for successful invasion of Acacia nodules and host range determination

Autor: Isabel María López-Lara, Nicolás Toro, Guy G. Orgambide, José Olivares, Frank B. Dazzo

Publikováno v: Microbiology (Reading, England). 141

Summary: Two transposon Tn5-induced mutants of wild-type broad-host-range Rhizobium sp. GRH2 were isolated and found to harbour different alterations in surface polysaccharides. These mutants, designated GRH2-14 and GRH2-50, induced a few, empty nodu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5dd38e67f428244a17f3665c0bc8add3
https://pubmed.ncbi.nlm.nih.gov/7711895

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Phospholipid and fatty acid compositions of Rhizobium leguminosarum biovar trifolii ANU843 in relation to flavone-activated pSym nod gene expression

Autor: Frank B. Dazzo, Douglas A. Gage, Zhi-Heng Huang, Guy G. Orgambide

Publikováno v: Lipids. 28(11)

The phospholipid and associated fatty acid compositions of the bacterial symbiont of clover, Rhizobium leguminosarum biovar trifolii wild-type ANU843, was analyzed by two-dimensional silica thin-layer chromatography, fast atom bombardment-mass spectr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2ae677f6bb00313d4bc9390a022e14d4
https://pubmed.ncbi.nlm.nih.gov/8277828

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Methoxylated fatty acids reported in Rhizobium isolates arise from chemical alterations of common fatty acids upon acid-catalyzed transesterification procedures

Autor: Guy G. Orgambide, Frank B. Dazzo, R. N. Reusch

We obtained from a phospholipid extract of wild-type Rhizobium leguminosarum bv. trifolii ANU843 methoxylated fatty acids that had been previously reported as constitutive unusual Rhizobium fatty acids. The use of deuterated reagents and subsequent g

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::57db4b09505af897b6424186d75a0f23
https://europepmc.org/articles/PMC204948/

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