| draft genome sequence of frankia sp. strain thr, a nitrogen-fixing actinobacterium isolated from the root nodules of casuarina cunninghamiana grown in egypt. | nitrogen-fixing actinobacteria of the genus frankia are symbionts of woody dicotyledonous plants termed actinorhizal plants. we report here a 5.3-mbp draft genome sequence for frankia sp. stain thr, a nitrogen-fixing actinobacterium isolated from root nodules of casuarina cunninghamiana collected in egypt. | 2014 | 24855310 |
| genome sequence of the atypical symbiotic frankia r43 strain, a nitrogen-fixing and hydrogen-producing actinobacterium. | frankia strain r43 is a nitrogen-fixing and hydrogen-producing symbiotic actinobacterium that was isolated from nodules of casuarina cunninghamiana but infects only elaeagnaceae. this communication reports the genome of the strain r43 and provides insights into the microbe genomics and physiological potentials. | 2015 | 26607894 |
| proposal of a type strain for frankia alni (woronin 1866) von tubeuf 1895, emended description of frankia alni, and recognition of frankia casuarinae sp. nov. and frankia elaeagni sp. nov. | before the establishment of pure cultures, the species frankia alni, 'frankia casuarinae' and 'frankia elaeagni' were proposed to encompass all causal agents of the nitrogen-fixing root nodules of dicotyledonous plants from the genera alnus, casuarina or elaeagnus. the sole frankia species with a validly published name, the type species f. alni, was described by woronin (1866) as present in the root of alder. until now no type strain has been designated for f. alni, even though the absence of a ... | 2016 | 27624710 |
| draft genome sequence of frankia sp. strain cci6, a salt-tolerant nitrogen-fixing actinobacterium isolated from the root nodule of casuarina cunninghamiana. | members of the actinomycete genus frankia form a nitrogen-fixing symbiosis with 8 different families of actinorhizal plants. we report a 5.57-mbp draft genome sequence for frankia sp. strain cci6, a salt-tolerant nitrogen-fixing actinobacterium isolated from root nodules of casurina cunninghamiana grown in egyptian soils. | 2014 | 24435877 |
| effect of salt stress on the physiology of frankia sp strain cci6. | actinorhizal plants are able to overcome saline soils and reclaim land. frankia sp strain cci6 was isolated from nodules of casuarina cunninghamiana found in egypt. phylogenetic analysis of frankia sp. strain cci6 revealed that the strain is closely related to frankia sp. strain cci3. the strain displays an elevated level of nacl tolerance. vesicle production and nitrogenase activity were also influenced by nacl. | 2013 | 24287648 |
| a simulation experiment on the effectiveness of tree and pasture filter strips to remove no3-n in lateral soil water flow. | the impact of vegetative filter strips to reduce the delivery of nonpoint source pollutants from agricultural land to inland water systems is now recognized as an important element in overall agro-ecosystem management. a glasshouse experiment was undertaken to measure the effectiveness of tree (eucalyptus camaldulensis dehnh. and casuarina cunninghamiana mq.) and pasture filter strips to intercept lateral movement of no(3)-n in soil water. tree treatments retained significantly more no(3)-n asso ... | 2008 | 18948468 |
| anthelmintic efficacy of five tropical native australian plants against haemonchus contortus and trichostrongylus colubriformis in experimentally infected goats (capra hircus). | the study of the anthelmintic properties of plants rich in plant secondary metabolites can provide ecologically sound methods for the treatment of parasites on grazing animals. the purpose of the present study was to evaluate the anthelmintic effect of five tropical native australian plant species rich in plant secondary metabolites on adult haemonchus contortus and trichostrongylus colubriformis in experimentally infected goats. thirty young, nematode-free goats were infected with 2500 h. conto ... | 2012 | 22265804 |
| 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 |
| molecular evidence of hybridization in florida's sheoak (casuarina spp.) invasion. | the presence of hybrids in plant invasions can indicate a potential for rapid adaptation and an added level of complexity in management of the invasion. three casuarina tree species, casuarina glauca, casuarina cunninghamiana and casuarina equisetifolia, native to australia, are naturalized in florida, usa. many florida casuarina trees are considered unidentifiable, presumably due to interspecific hybridization. we collected tissue from over 500 trees from australia and florida and genotyped the ... | 2009 | 19627489 |
| successful nodulation of casuarina by frankia in axenic conditions. | in order to depict the fine interactions that lead to nodulation, absolute microbiological control of the symbiotic partners is required, i.e. the ability to obtain in vitro axenic nodulation, a condition that has never been fulfilled with the casuarina-frankia symbiosis. the effects of culture conditions on plant growth and nodule formation by casuarina cunninghamiana were investigated. | 2007 | 17953583 |
| relative tolerance of a range of australian native plant species and lettuce to copper, zinc, cadmium, and lead. | the tolerance of wild flora to heavy-metal exposure has received very little research. in this study, the tolerance of four native tree species, four native grass species, and lettuce to copper (cu), zinc (zn), cadmium (cd), and lead (pb) was investigated in a root-elongation study using petri dishes. the results of these studies show a diverse range of responses to cu, zn, cd, and pb amongst the tested plant species. toxicity among metals decreased in the following order: cd ~ cu > pb > zn. met ... | 2010 | 20213195 |
| diminished exoproteome of frankia spp. in culture and symbiosis. | frankia species are the most geographically widespread gram-positive plant symbionts, carrying out n(2) fixation in root nodules of trees and woody shrubs called actinorhizal plants. taking advantage of the sequencing of three frankia genomes, proteomics techniques were used to investigate the population of extracellular proteins (the exoproteome) from frankia, some of which potentially mediate host-microbe interactions. initial two-dimensional sodium dodecyl sulfate-polyacrylamide gel electroph ... | 2009 | 19749056 |
| riparian plant material inputs to the murray river, australia: composition, reactivity, and role of nutrients. | by changing riparian plants from eucalypts to pasture and exotic deciduous trees, modern development has altered the type of carbon assimilated by australian rivers. to investigate influences of plant litter substrates on biochemical oxygen demand, plant materials entering the murray river were analyzed for their composition and mineralization potential. plant materials were distinguished compositionally by two principal components, structural carbon and macronutrients, as: (i) eucalyptus leaves ... | 2007 | 17526875 |
| casuarina cunninghamiana tissue extracts stimulate the growth of frankia and differentially alter the growth of other soil microorganisms. | aqueous extracts of host plant casuarina cunninghamiana tissue altered the in vitro growth of its diazotrophic microsymbiont frankia and a selection of other soil microorganisms. the growth of actinomycetous frankia strains, 55005. avci1, cesi5, cji82 001, and cj was stimulated by aqueous extracts of c. cunninghamiana tissue. green cladodes (photosynthetic branches), unsuberized roots, and suberized roots were more stimulatory than dry cladodes and seed tissue. aqueous extracts of green cladodes ... | 2004 | 15112734 |
| effects of symbiosis with frankia and arbuscular mycorrhizal fungus on the natural abundance of 15n in four species of casuarina. | the effect of interactions between casuarina species, frankia strains and amf on nitrogen isotope fractionation within the plant were determined under conditions where changes in source nitrogen were minimized by growing plants in mineral nitrogen-deficient conditions and without added organic n. casuarina cunninghamiana, c. equisetifolia, c. glauca, and c. junghuniana were inoculated singly with three frankia strains or were dual inoculated with frankia and glomus fasciculatum. the %n and delta ... | 2000 | 10938834 |
| aerial nodules in casuarina cunninghamiana. | a complete survey of la réunion island showed that, in 40- to 50-year-old casuarina cunninghamiana plantations located in the northeast at an altitude above 400 m, some trees bore aerial nodules as high as 6 to 7 m up the trunk. the nodules exhibited a significant specific acetylene reduction by the ara method (0.77 mumol of c(2)h(4) per h/g [dry weight] of nodule) at the time of sampling (june 1990). aerial nodules were also found on a casuarina glauca trunk. preliminary observations show that ... | 1991 | 16348452 |
| nutrient accumulation in trees and soil following irrigation with municipal effluent in australia. | irrigation of tree crops is being evaluated as a method of land disposal of municipal effluent in australia. a study was carried out from 1980-84 in which seven tree species were sprinkler-irrigated with effluent at an annual rate of 1191-1752 mm. effective weed control and frequent irrigation resulted in good survival of all species (range 83-100%) at 12 months. total productivity was estimated at age 4 years by measuring biomass of each species inclusive of litter and roots to a soil depth of ... | 1990 | 15092326 |
| nodulated n2-fixing casuarina cunninghamiana is the sink for net n transfer from non-n2-fixing eucalyptus maculata via an ectomycorrhizal fungus pisolithus sp. using 15nh4+ or 15no3- supplied as ammonium nitrate. | to determine the effects of nitrogen source on rates of net n transfer between plants connected by a common mycorrhizal network, we measured transfer of n supplied as 15nh4 14no3 or 14nh4 15no3 in three casuarina/eucalyptus treatments interconnected by a pisolithus sp. the treatments were nonnodulated nonmycorrhizal/nonmycorrhizal; nonnodulated mycorrhizal/mycorrhizal; and nodulated mycorrhizal/mycorrhizal. mycorrhization was 67% in eucalyptus and 36% in casuarina. n2 fixation supplied 38% of th ... | 2005 | 16101925 |
| a comparison of manometric and membrane-electrode procedures for measuring rates of leaf decay. | two instruments were compared for consistency of decay-rate measurements of four leaf types: lolium perenne, typha domingenesis, casuarina cunninghamiana and eucalyptus polyanthemos, via progressive biological oxygen demand (bod). the instruments were (a) a dissolved oxygen probe (i.e. an oxygen-selective membrane electrode) used in two different modes: (1) measurements of sacrificial samples that were successively discarded, and (2) repeated measurements of the same sample, and (b) a mercury fr ... | 2001 | 11349381 |
| haemoglobin in the root nodules of casuarina cunninghamiana. | | 1960 | 13814250 |
| specificity and effectivity in nodulation by frankia on southern hemisphere actinorhiza. | nodulation ability was tested for frankia strains hfpcci3 and el1, and frankia sources a.t. and g.a. from allocasaurina torulosa and gymnostoma australianum, respectively, on a. torulosa miq., casuarina cunninghamiana miq., g. australianum l. johnson and elaeagnus triflora roxb. it was shown that a. torulosa and c. cunninghamiana formed nodules only with the frankia sources obtained from their own host plant, while e. triflora formed nodules with three of the four frankia sources tested. all nod ... | 1995 | 7875571 |
| effect of o2 on vesicle formation, acetylene reduction, and o2-uptake kinetics in frankia sp. hfpcci3 isolated from casuarina cunninghamiana. | the effect of the partial pressure of oxygen (po2) on the formation of vesicles, which are thought to be the site of n2 fixation in frankia, was studied in hfpcci3, an effective isolate from casuarina cunninghamiana. unlike other actinorhizal root nodules, vesicles are not produced by the endophyte in casuarina nodules. however, in culture under aerobic conditions, large, phase-bright vesicles are formed in hfpcci3 within 20 h following removal of nh+4 from the culture medium and reach peak numb ... | 1985 | 3866636 |
| genetic diversity among frankia strains nodulating members of the family casuarinaceae in australia revealed by pcr and restriction fragment length polymorphism analysis with crushed root nodules. | dna extracted directly from nodules was used to assess the genetic diversity of frankia strains symbiotically associated with two species of the genus casuarina and two of the genus allocasuarina naturally occurring in northeastern australia. dna from field-collected nodules or extracted from reference cultures of casuarina-infective frankia strains was used as the template in pcrs with primers targeting two dna regions, one in the ribosomal operon and the other in the nif operon. pcr products w ... | 1996 | 8975625 |
| nitrate-nitrogen reduction by established tree and pasture buffer strips associated with a cattle feedlot effluent disposal area near armidale, nsw australia. | vegetated buffer strips have been recognized as an important element in overall agro-ecosystem management to reduce the delivery of non-point source pollutants from agricultural land to inland water systems. a buffer strip experiment consisting of two tree species (eucalyptus camaldulensis and casuarina cunninghamiana) with two planting densities and a pasture treatment was conducted to determine the effectiveness of no(3)-n removal from a cattle feedlot effluent disposal area at tullimba near a ... | 2012 | 22286134 |