Occurrence of Alnus-Infective Frankia and Trifolium-Infective Rhizobium in Circumpolar Soils

Huss‐Danell, Kerstin; Sverrisson, Halldór; Hahlin, Ann-Sofi; Danell, Kjell

doi:10.2307/1552588

Cited by 24 publications

(6 citation statements)

References 16 publications

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“…FIU densities in the other three community types were much lower than in the alder thicket soil: FIU density is essentially zero in areas currently without plants, and often very low or even zero in lupin patch and riparian zone sites. Similarly low infectivity was observed in a survey of circumpolar soils (Huss-Danell et al 1999), and early successional sand dune sites along Lake Michigan were lacking alder-infective Frankia despite the presence of alders inoculum from alder thicket sites, and three levels of P (0, 6, and 12 mg/kg). N=10-13 plants per treatment combination.…”

Section: Discussionsupporting

confidence: 55%

Low Frankia inoculation potentials in primary successional sites at Mount St. Helens, Washington, USA

Seeds

Bishop

2009

Plant Soil

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The ability of 23 year old volcanic soils from Mount St. Helens, USA, to nodulate actinorhizal Sitka alder (Alnus viridis ssp. sinuata) was studied by estimating Frankia Inoculation Unit density (FIU) in four types of primary successional communities using a host-plant bioassay. Rhizospheric Mycelial Inoculation Unit (MIU) density and the effects of inoculation with alder soil and phosphorus (P) on seedling growth were also examined. FIU and MIU were highest in alder thickets, lower in lupin patch and riparian zone sites, and lowest, with no FIUs, in bare areas. Seedling dry mass was higher in treatments inoculated with alder soil but not with P addition, while root: shoot mass ratios decreased with both inoculation and P. The extremely low densities of suitable symbionts in sparsely vegetated primary successional areas at Mount St. Helens may explain the surprisingly slow rate of spread of alder from nearby seed sources.

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Section: Discussionsupporting

confidence: 55%

Low Frankia inoculation potentials in primary successional sites at Mount St. Helens, Washington, USA

Seeds

Bishop

2009

Plant Soil

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“…Furthermore, naturally established seedlings were well nodulated. Other studies have also shown effective levels of Frankia in Alaskan soils (Huss-Danell et al, 1997, 1999.…”

Section: Discussionmentioning

confidence: 91%

Succession on Subalpine Placer Mine Spoil: Effects of Revegetation with Alnus viridis, Alaska, U.S.A

Densmore

2005

Arctic, Antarctic, and Alpine Research

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“…In the alpine zone of Parâng Mountains, the most likely explanation is given by the presence of Frankia genus bacteria in the nodules of Dryas octopetala. Some references indicated that other species of Dryas genus form nodules with Frankia [29,30]. The symbiosis between Dryas octopetala and Frankia was not recorded but the amplification pattern could suggest a relationship.…”

Section: Resultsmentioning

confidence: 99%

“…As mentioned above, identifying nodules containing Frankia at Dryas octopetala would be a novelty. Frankia nodules being found only at Dryas drummondii [29]. In the coniferous altitudinal vegetation zone, the presence of specific bands was explained by nonsymbiotic Frankia strains, being known that these can be found in the soil on which spruce (Picea abies) grows [37].…”

Section: Resultsmentioning

confidence: 99%

Molecular identification of diazotroph microbial consortia in mountain soil

et al. 2010

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Nitrogen fixing microbial consortia from soil samples taken from five altitudinal vegetation zones (alpine, subalpine, coniferous, beech, Maleia flood plain) of Parâng Massif, Romania, were isolated and identified. Molecular characterisation of nitrogen fixing consortia was carried out by PCR and nested PCR with 7 primer sets specific to nifH genes. All nifH genes are specific to nitrogen fixation and are found within phylogenetically related organisms which have the nitrogenase enzyme complex. These molecular studies allowed the assessment of nifH gene diversity within these nitrogen fixing microbial consortia from different type of soils. At high altitude, a consortium of nitrogen fixing bacteria dominated by Azotobacter chroococcum and Azospirillum brasilense was found. Clostridium, Rhizobiales, Herbaspirillum, Frankia species were also found in different rations depending on the altitudinal vegetation zone.

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Occurrence of Alnus-Infective Frankia and Trifolium-Infective Rhizobium in Circumpolar Soils

Cited by 24 publications

References 16 publications

Low Frankia inoculation potentials in primary successional sites at Mount St. Helens, Washington, USA

Low Frankia inoculation potentials in primary successional sites at Mount St. Helens, Washington, USA

Succession on Subalpine Placer Mine Spoil: Effects of Revegetation with Alnus viridis, Alaska, U.S.A

Molecular identification of diazotroph microbial consortia in mountain soil

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