Calcium and pH interaction on root nodulation of nursfry-grown red alder (Alnus rubra bong.) seedlings by Frankia

Crannell, Wanda K.; Tanaka, Yasuomi; Myrold, David D.

doi:10.1016/0038-0717(94)90249-6

Cited by 35 publications

(17 citation statements)

References 18 publications

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“…Many of these factors have been suggested to aVect the size of infective Frankia populations in soil (e.g., Huguet et al 2004a;Martin et al 2003;Zitzer and Dawson 1992;Smolander 1990), and some appear to diVerentially aVect Frankia genotypes (Huguet et al 2004a, b;Zitzer and Dawson 1992). However, the mechanisms underlying such correlations are likely to be complex, involving covariation (e.g., soil N and organic matter), or synergistic interactions among soil variables (e.g., pH and nutrient content), as well as direct eVects on soil bacteria and/or indirect eVects acting through either host growth and nodulation (Uliassi and Ruess 2002;Wall 2000;Crannell et al 1994), or non-host plant cover (Maunuksela et al 1999;Paschke et al 1994;Zitzer and Dawson 1992;Smolander and Sundman 1987). Nevertheless, such mechanisms are probably limited in their action to one or more points along the sequence of events which must occur for Frankia to colonize a host in a new site, a process which requires essentially three steps:…”

Section: Discussionmentioning

confidence: 97%

Host species and habitat affect nodulation by specific Frankia genotypes in two species of Alnus in interior Alaska

et al. 2009

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Alders (Alnus spp.) are important components of northern ecosystems due to their ability to fix nitrogen (N) in symbiosis with Frankia bacteria. Availability of optimal Frankia may be a contributing factor in limiting the performance and ecological effects of Alnus, but the factors underlying distribution of Alnus-infective Frankia are not well understood. This study examined the genetic structure (nifD-K spacer RFLP haplotypes) of Frankia assemblages symbiotic with two species of Alnus (A. tenuifolia and A. viridis) in four successional habitats in interior Alaska. We used one habitat in which both hosts occurred to observe differences between host species independent of habitat, and we used replicate sites for each habitat and host to assess the consistency of symbiont structure related to both factors. We also measured leaf N content and specific N-fixation rate (SNF) of nodules ((15)N uptake) to determine whether either covaried with Frankia structure, and whether Frankia genotypes differed in SNF in situ. Frankia structure differed between sympatric hosts and among habitats, particularly for A. tenuifolia, and was largely consistent among replicate sites representing both factors. Leaf N differed between host species and among habitats for both hosts. SNF did not differ among habitats or host species, and little evidence for differences in SNF among Frankia genotypes was found, due largely to high variation in SNF. Consistency of Frankia structure among replicate sites suggests a consistent relationship between both host species and habitat among these sites. Correlations with specific environmental variables and possible underlying mechanisms are discussed.

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Section: Discussionmentioning

confidence: 97%

Host species and habitat affect nodulation by specific Frankia genotypes in two species of Alnus in interior Alaska

et al. 2009

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“…Improved soil chemistry probably stimulated roots, N uptake and thus promoted the growth of trees. Although the role of pH on the mycorrhiza is not fully clarified, the available Ca and base saturation are most probably beneficial (Crannell et al 1994). Nonetheless, the supposedly improved nutrient uptake in the fertilized variant might have been diluted in a higher volume of biomass of faster growing trees.…”

Section: Resultsmentioning

confidence: 99%

Influence of pulverized limestone and amphibolite mixture on the growth performance of Alnus incana (L.) Moench plantation on an acidified mountain site

Kuneš¹,

Balcar²,

Benešová³

et al. 2009

J. For. Sci.

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Norway spruce (Picea abies [L.] Karst.) is naturally a principal tree species in the upper and summit parts of the Jizerské hory Mts., nonetheless, a broadleaved admixture, such as European beech (Fagus sylvatica L.), rowan (Sorbus aucuparia L.), birch (Betula sp.), sycamore maple (Acer pseudoplatanus L.) etc., was typical of the local indigenous forests. The broadleaved admixture has been reduced due to human activities in the course of history.Moreover, during the air-pollution disaster in the 1970s and 1980s, the allochthonous conifers were often cultivated in the most affected mountain parts (Pěnička 2007) for their better pollution resistance. Blue spruce (Picea pungens Engelmann) is the most important representative. At present, when the disaster is over and the air-pollution input to the forest ecosystems is lowered, these allochthonous stands should successively be converted into stands composed of more convenient native tree species (Balcar, Kacálek 2008a).The young coniferous plantations, which have replaced the old forests disturbed by pollution, are The aim of the experiment was to test the suitability of Alnus incana to form preparatory stands covering the site and thus enabling the reintroduction of more sensitive target species. A potential of Alnus incana to respond to slow-release fertilizing was tested as well. The control treatment showed sufficient growth dynamics, nevertheless, the fertilization significantly promoted the growth (documented by height, height increment and stem-base diameter). If some limitations of alder such as high light requirements are respected, the speckled alder can be recommended as a suitable species for preparatory stands even in the 7 th and 8 th altitudinal (vegetation) zones, especially when fertilized.

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“…For example, many studies have found that biogeographic factors (e.g., climate, elevation) significantly affect the structure of Frankia assemblages at multiple spatial scales (Benson and Dawson 2007 and references therein). Others have demonstrated that edaphic factors (e.g., soil type, pH) can also strongly influence the composition and diversity of Frankia assemblages (Griffiths and McCormick 1984;Sheppard et al 1988;Crannell et al 1994;Nickel et al 1999).…”

Section: Introductionmentioning

confidence: 98%

FrankiaAssemblages Associated withAlnus rubraandAlnus viridisAre Strongly Influenced by Host Species Identity

Lipus

Kennedy

2011

International Journal of Plant Sciences

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This study examined the effect of host species identity on the structure of Alnus-associated Frankia bacterial assemblages in the Pacific Northwest, United States, using two approaches. First, Frankia in nodules were sampled from six stands of Alnus rubra or Alnus viridis. Second, a bioassay was conducted where A. rubra and A. viridis seedlings were grown in different soils collected from these two hosts. Frankia genotypes were characterized with nifH sequences and bacterial assemblages were compared using taxon-and divergencebased analyses. Strong host associations were evident in the field; the dominant Frankia genotypes showed significant associations with either A. rubra or A. viridis, and there were host-associated groupings at the assemblage level as well. In the bioassay, host associations among Frankia genotypes were evident but less pronounced, reflecting an interaction between host species and other factors. Although nodule abundance varied among bioassay treatments, seedling dry mass was not strongly correlated with either nodule quantity or soil chemistry. Collectively, our observation and experimental results indicate that host identity is a major factor influencing the genotype composition and abundance of Alnus-associated Frankia assemblages.

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Calcium and pH interaction on root nodulation of nursfry-grown red alder (Alnus rubra bong.) seedlings by Frankia

Cited by 35 publications

References 18 publications

Host species and habitat affect nodulation by specific Frankia genotypes in two species of Alnus in interior Alaska

Host species and habitat affect nodulation by specific Frankia genotypes in two species of Alnus in interior Alaska

Influence of pulverized limestone and amphibolite mixture on the growth performance of Alnus incana (L.) Moench plantation on an acidified mountain site

FrankiaAssemblages Associated withAlnus rubraandAlnus viridisAre Strongly Influenced by Host Species Identity

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