Extranodular growth of Frankia on Casuarina equisetifolia

Diem, H

doi:10.1016/0378-1097(82)90050-7

Cited by 7 publications

(8 citation statements)

References 8 publications

(10 reference statements)

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“…Because sp(-) strains produce few if any spores within nodules, their persistence at a given site probably depends on saprophytic growth in soil. Growth within the rhizosphere (Diem et al, 1982;Lalonde et al, 1981) may also contribute to their maintenance.…”

Section: Distribution Of Sp( + ) and Sp(-) Nodulesmentioning

confidence: 98%

Distribution of spore-positive and spore-negative nodules ofAlnus incana ssp.rugosa in Maine, USA

Holman

Schwintzer

1987

Plant Soil

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The distribution of spore-positive (sp+) and spore-negative (sp-) root nodules of Alnus incana ssp. rugosa (DuRoi) Clausen (speckled alder) was examined at 29 sites with a wide range of environmental conditions in Maine, USA. These included: pH 3.4 to 7.0, soil texture ranging from coarse gravel to clay to organic soils, elevation from 3 to 591 m and latitude 43 to 47~ Habitat types included disturbed areas, streamsides, swamps and old fields.Sp(-) noduleswere substantially more common, making up 76% of all nodules, whereas only 24% were sp(+). Sp(-) nodules often occurred in pure stands and predominated at disturbed sites with mineral soils at the surface and in old fields and swamps with pH > 4.0. Sp(+) nodules were nearly always found in mixture with sp(-) nodules. They occurred primarily at streamside and lakeshore sites where they made up 49% of the nodules and at sites with pH < 4.0 regardless of habitat type. It is suggested that sp(-) strains of Frankia may be maintained at a site by saprophytic growth in soil and thus nodulate newly established hosts, whereas sp(+) strains may be maintained primarily by spore production within nodules and thus depend on extended presence of the host.

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Section: Distribution Of Sp( + ) and Sp(-) Nodulesmentioning

confidence: 98%

Distribution of spore-positive and spore-negative nodules ofAlnus incana ssp.rugosa in Maine, USA

Holman

Schwintzer

1987

Plant Soil

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“…Also, they are important in the establishment and/or the effectiveness of the nitrogen-fixing symbioses, as co actors, and as potential sources of novel natural products. Atypical Frankia isolates inhabiting cortical layer have been obtained from unpeeled Casuarina nodules (Nazaret et al 1989), which are unable to nodulate Casuarina, their original hosts, but can nodulate members of the Elaeagnaceae (Diem et al 1982;Diem and Dommergues 1983). Ramirez-Saad et al (1998) demonstrated that root nodules of Ceanothus caeruleus contain, beside the typical Frankia endophyte, phylogenetically related non nitrogen-fixing and non-nodulating actinobacteria.…”

Section: Introductionmentioning

confidence: 99%

Isolation and characterization of non-Frankia actinobacteria from root nodules of Alnus glutinosa, Casuarina glauca and Elaeagnus angustifolia

et al. 2009

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Actinobacterial isolates randomly obtained on nitrogen-free BAP medium from surface sterilized root nodules of Alnus glutinosa, Casuarina glauca and Elaeagnus angustifolia sampled from fields were reported. They were assigned on the basis of partial 16S rRNA sequences to Micromonospora, Nocardia and Streptomyces genera. The isolates have been screened for hydrolytic activities, indole acetic acid (IAA) and siderophores production, phosphate solubilization and antagonistic activities. Results suggest putative traits as plant growth promoting bacteria proprieties of the isolates that occur in unique association in root nodules of the three analysed actinorhizal host species.

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“…The abundance of infectious Frankia in soil has been associated with the presence of actinorhizal plants (Arveby and Huss-Danell, 1988;Dawson and Klemp, 1987;Oremus, 1980;Smolander, 1990) and their removal can result in a decrease in infectious Frankia (Wollum et al, 1968). The abundance of infectious Frankia near roots of actinorhizal plants is probably due to rhizosphere interactions (Diem et al, 1982;Vergnaud et al, 1985) and root-nodule decomposition (Oremus, 1980), which may release infectious Frankia. Frankia can also survive in the soil in the absence of actinorhizal plants (Dawson and Klemp, 1987;Houwers and Akkermans, 1981;Paschke and Dawson, 1992b;Young et al, 1992) and can apparently flourish under certain non-host plants such as birch (Paschke and Dawson, 1992a;Smolander, 1990;Smolander et al, 1990), indicating that the ability of vegetation to enhance the Frankia infectious capacity of soil is not limited to actinorhizal plants.…”

Section: Introductionmentioning

confidence: 99%

Occurrence of Myrica-nodulating Frankia in Hawaiian volcanic soils

Burleigh

Dawson

1994

Plant Soil

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The ability of Hawaiian volcanic soils to nodulate actinorhizal Myrica cerifera, Casuarina equisetifolia, and Alnus glutinosa was determined using a host-plant bioassay. Myrica-nodulating Frankia occurred in five volcanic deposits with depositional ages ranging from 20 to 162 years before present. The oldest deposit had a mean estimated nodulation capacity from 450 to 1200 times greater than those of the younger deposits. Only the oldest deposit had high moisture content, high organic matter content, and increased vegetative cover, including an abundance of actinorhizal M. faya. Casuarina-and Alnus-nodulating Frankia were not detected in any of these volcanic deposits.

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Extranodular growth of Frankia on Casuarina equisetifolia

Cited by 7 publications

References 8 publications

Distribution of spore-positive and spore-negative nodules ofAlnus incana ssp.rugosa in Maine, USA

Distribution of spore-positive and spore-negative nodules ofAlnus incana ssp.rugosa in Maine, USA

Isolation and characterization of non-Frankia actinobacteria from root nodules of Alnus glutinosa, Casuarina glauca and Elaeagnus angustifolia

Occurrence of Myrica-nodulating Frankia in Hawaiian volcanic soils

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