Publications

catenulispora graminis sp. nov., rhizobacterium from bamboo (phyllostachys nigro var. henonis) rhizosphere soil.	a novel actinobacteria, designated strain br-34(t), was isolated from rhizosphere soil of bamboo (phyllostachys nigro var. henonis) was sampled in damyang, korea. the strain was found to have morphological and chemotaxonomic characteristics typical of the genus catenulispora. the strain contained iso-c(16:0) as major fatty acids and mk-9 (h(4)), mk-9 (h(6)) and mk-9 (h(8)) as the major isoprenoid quinone. phylogenetic analysis of the 16s rrna gene sequence of strain br-34(t) was compared with th ...	2011	22199217
rhizobium borbori sp. nov., aniline-degrading bacteria isolated from activated sludge.	three aniline-degrading bacteria, strains dn316(t), dn316-1 and dn365, were isolated from activated sludge. according to 16s rrna gene sequence-based phylogenetic analysis, the isolates belonged to the genus rhizobium, with rhizobium ( = agrobacterium) radiobacter lmg 140(t) as the closest relative, with 96.5 % sequence similarity. phylogenetic analysis of the representative strain dn316(t) using sequences of the glna, thrc and reca genes and the 16s-23s intergenic spacer region confirmed the ph ...	2011	20453105
β-odap accumulation could be related to low levels of superoxide anion and hydrogen peroxide in lathyrus sativus l.	level of the neuroexcitatory β-n-oxalyl-l-α,β-diaminopropionic acid (β-odap) in grass pea (lathyrus sativus l.) varies with development and environmental stress. reactive oxygen species (ros) (mainly o(2)ⁱ- and h(2)o(2)) are frequently reported to play important roles in plant development and in response to various stresses. to investigate the possible inter-relationship between contents of β-odap and ros, grass pea leaves have been analyzed for contents of β-odap, o(2)ⁱ- and h(2)o(2). the resul ...	2011	20510333
factors affecting β-odap content in lathyrus sativus and their possible physiological mechanisms.	a neuroexcitatory non-protein amino acid, β-n-oxalyl-l-α,β-diaminopropionic acid (β-odap), present in the seeds of the hardy legume crop grass pea (lathyrus sativus l.), was considered responsible for human lathyrism. the levels of β-odap were reported to vary in different tissues during plant development, and to be affected by a wide range of environmental stresses. in this paper, dynamic changes in β-odap level at specific stages of plant development as well as the influences of various enviro ...	2011	20510335
lasr receptor for detection of long-chain quorum-sensing signals: identification of n-acyl-homoserine lactones encoded by the avsi locus of agrobacterium vitis.	bacterial biosensor strains have greatly facilitated the rapid discovery, isolation, and study of quorum-sensing systems. in this study, we determined the relative sensitivity of a lasr-based e. coli bacterial bioluminescence biosensor jm109 (psb1075) for 13 diverse long-chain n-acyl-homoserine lactones (ahls) including oxygen-substituted and -unsubstituted ahls containing 14, 16, and 18 carbons and with and without double bonds. furthermore, we show by bioassay, hplc, and gc/ms that four long-c ...	2011	20514483
rhizobium tubonense sp. nov., isolated from root nodules of oxytropis glabra.	four rhizobial strains, designated ccbau 85046(t), ccbau 85051, ccbau 85048 and ccbau 85049, isolated from root nodules of oxytropis glabra grown in tibet, china, were previously defined, using amplified 16s rrna gene restriction analysis, as a novel group within the genus rhizobium. to clarify their taxonomic position, these strains were further analysed and compared with reference strains of related bacteria using a polyphasic approach. the 16s rrna gene analysis showed that the four isolates ...	2011	20382797
rhizobium vignae sp. nov., a symbiotic bacterium isolated from multiple legume species.	a group of rhizobial strains isolated from nodules of multiple legume species grown in different geographical regions of china had identical 16s rrna genes. phylogenetic analysis based on the 16s rrna gene sequences showed that the novel strains formed a subclade in the genus rhizobium together with rhizobium galegae, rhizobium huautlense and rhizobium alkalisoli, with 99.8 % gene sequence similarity between the strains. the dna-dna relatedness values between the representative strain ccbau 051 ...	2011	20382786
composition of bacterial communities associated with a plant-parasitic nematode bursaphelenchus mucronatus.	bursaphelenchus mucronatus is a plant-parasitic nematode widely existing in eurasian pine forests. to analyze the diversity and role of bacteria associated with the nematode, culture-dependent and culture-independent methods were used to identify and characterize the composition of bacterial community. a total of 13 bacterial isolates were obtained from b. mucronatus by the culture-dependent method. sixty-four species of bacteria were identified from two 16s rdna clone libraries constructed from ...	2011	20524117
genetic characterization of root-nodule bacteria associated with acacia salicina and a. stenophylla (mimosaceae) across south-eastern australia.	symbiotic relationships between legumes and nitrogen-fixing soil micro-organisms are of ecological importance in plant communities worldwide. for example, nutrient-poor australian soils are often dominated by shrubby legumes (e.g. species of acacia). however, relatively few studies have quantified patterns of diversity, host-specificity and effectiveness of these ecologically important plant-microbe interactions. in this study, 16s rrna gene sequence and pcr-rflp analyses were used to examine ba ...	2011	20228207
Identification and Characterization of the Rhizobium sp. Strain GIN611 Glycoside Oxidoreductase Resulting in the Deglycosylation of Ginsenosides.	Using enrichment culture, Rhizobium sp. strain GIN611 was isolated as having activity for deglycosylation of a ginsenoside, compound K (CK). The purified heterodimeric protein complex from Rhizobium sp. GIN611 consisted of two subunits with molecular masses of 63.5 kDa and 17.5 kDa. In the genome, the coding sequence for the small subunit was located right after the sequence for the large subunit, with one nucleotide overlapping. The large subunit showed CK oxidation activity, and the deglycosyl ...	2012	22020506
microbial sucrose isomerases: producing organisms, genes and enzymes.	sucrose isomerase (si) activity is used industrially for the conversion of sucrose into isomers, particularly isomaltulose or trehalulose, which have properties advantageous over sucrose for some food uses. all of the known microbial sis are tim barrel proteins that convert sucrose without need for any cofactors, with varying kinetics and product specificities. the current analysis was undertaken to bridge key gaps between the information in patents and scientific publications about the microbes ...	2012	22133441
Roles of secreted peptides in intercellular communication and root development.	Intercellular signaling networks control cell identity and activity in all multicellular organisms. Secreted peptides that function as extracellular ligands play essential roles in local communication between adjacent plant cells. The extracellular domain of receptor kinases bind to secreted peptides and initiate downstream cellular responses, resulting in cell proliferation, growth, or differentiation in multicellular organisms. Root growth and development are highly organized processes involvi ...	2012	22195583
A genetic discontinuity in root-nodulating bacteria of cultivated pea in the Indian trans-Himalayas.	Evolutionary relationships of 120 root-nodulating bacteria isolated from the nodules of Pisum sativum cultivated at 22 different locations of the trans-Himalayan valleys of Lahaul and Spiti in the state of Himachal Pradesh of India were studied using 16S rRNA gene PCR-RFLP, ERIC-PCR, sequencing of 16S rRNA, atpD, recA, nodC and nifH genes, carbon-source utilization pattern (BIOLOG™), and whole-cell fatty acid profiling. The results demonstrated that all isolates belonged to Rhizobium leguminosar ...	2012	22092487
Interplay of flg22-induced defence responses and nodulation in Lotus japonicus.	In this study the interplay between the symbiotic and defence signalling pathways in Lotus japonicus was investigated by comparing the responses to Mesorhizobium loti, the symbiotic partner of L. japonicus, and the elicitor flg22, a conserved peptide motif present in flagellar protein of a wide range of bacteria. It was found that defence and symbiotic pathways overlap in the interaction between L. japonicus and M. loti since similar responses were induced by the mutualistic bacteria and flg22. ...	2012	21934117
Key physiological properties contributing to rhizosphere adaptation and plant growth promotion abilities of Azospirillum brasilense.	Azospirillum brasilense is a plant growth promoting rhizobacterium (PGPR) that is being increasingly used in agriculture in a commercial scale. Recent research has elucidated key properties of A. brasilense that contribute to its ability to adapt to the rhizosphere habitat and to promote plant growth. They include synthesis of the auxin indole-3-acetic acid, nitric oxide, carotenoids, and a range of cell surface components as well as the ability to undergo phenotypic variation. Storage and utili ...	2012	22092983
Casuarina Root Exudates Alter the Physiology, Surface Properties, and Plant Infectivity of Frankia sp. Strain CcI3.	The actinomycete genus Frankia forms nitrogen-fixing symbioses with 8 different families of actinorhizal plants, representing more than 200 different species. Very little is known about the initial molecular interactions between Frankia and host plants in the rhizosphere. Root exudates are important in Rhizobium-legume symbiosis, especially for initiating Nod factor synthesis. We measured differences in Frankia physiology after exposure to host aqueous root exudates to assess their effects on ac ...	2012	22101047
the quorum sensing transcriptional regulator trar has separate binding sites for dna and the anti-activator.	quorum sensing represents a mechanism by which bacteria control their genetic behaviors via diffusible signals that reflect their population density. trar, a quorum sensing transcriptional activator in the rhizobiaceae family, is regulated negatively by the anti-activator tram via formation of a trar-tram heterocomplex. prior structural analysis suggests that tram and dna bind to trar in distinct sites. here we combined isothermal titration calorimetry (itc) and electrophoretic mobility shift as ...	2012	22274608
mercury-resistant rhizobial bacteria isolated from nodules of leguminous plants growing in high hg-contaminated soils.	a survey of symbiotic bacteria from legumes grown in high mercury-contaminated soils (almadén, spain) was performed to produce a collection of rhizobia which could be well adapted to the environmental conditions of this region and be used for restoration practices. nineteen hg-tolerant rhizobia were isolated from nodules of 11 legume species (of the genera medicago, trifolium, vicia, lupinus, phaseolus, and retama) and characterized. based on their growth on hg-supplemented media, the isolates w ...	2012	22246528
new beta rhizobial strains able to efficiently nodulate parapiptadenia rigida (benth.) brenan.	among the leguminous trees natives to uruguay parapiptadenia rigida (angico), a mimosoideae legume, is one of the most promising species for agroforestry. like many other legumes, it is able to establish symbiotic associations with rhizobia and belongs to the group known as "nitrogen fixing trees", which are major components of agroforestry systems. information about rhizobial symbionts for this genus is scarce, and thus the aim of this work was to identify and characterize rhizobia associated w ...	2012	22226956