The effect of pH on nodulation and growth ofCoriaria myrtifolia L.

Cañizo, A.; Miguel, C.; Rodríguez-Barrueco, C.

doi:10.1007/bf02149922

Cited by 7 publications

(3 citation statements)

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“…It is highly unlikely for a root symbiont that colonizes the proton-rich rhizosphere and acidic plant endosphere, to secondarily gain alkaliphily making it intolerant of pH 6 in culture. However, this perplexing character is apparently not limited to a single strain; Canizo et al [ 78 ] showed that while Cluster II Frankia nodulated Coriaria myrtifolia at a range of pH between 5 and 9, higher rates of nodulation and host growth correlated directly with increasing pH. Furthermore, in New Zealand, Coriaria sp.…”

Section: Discussionmentioning

confidence: 99%

An assemblage of Frankia Cluster II strains from California contains the canonical nod genes and also the sulfotransferase gene nodH

et al. 2016

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BackgroundThe ability to establish root nodule symbioses is restricted to four different plant orders. Soil actinobacteria of the genus Frankia can establish a symbiotic relationship with a diverse group of plants within eight different families from three different orders, the Cucurbitales, Fagales and Rosales. Phylogenetically, Frankia strains can be divided into four clusters, three of which (I, II, III) contain symbiotic strains. Members of Cluster II nodulate the broadest range of host plants with species from four families from two different orders, growing on six continents. Two Cluster II genomes were sequenced thus far, both from Asia.ResultsIn this paper we present the first Frankia cluster II genome from North America (California), Dg2, which represents a metagenome of two major and one minor strains. A phylogenetic analysis of the core genomes of 16 Frankia strains shows that Cluster II the ancestral group in the genus, also ancestral to the non-symbiotic Cluster IV. Dg2 contains the canonical nod genes nodABC for the production of lipochitooligosaccharide Nod factors, but also two copies of the sulfotransferase gene nodH. In rhizobial systems, sulfation of Nod factors affects their host specificity and their stability.ConclusionsA comparison with the nod gene region of the previously sequenced Dg1 genome from a Cluster II strain from Pakistan shows that the common ancestor of both strains should have contained nodABC and nodH. Phylogenetically, Dg2 NodH proteins are sister to rhizobial NodH proteins. A glnA-based phylogenetic analysis of all Cluster II strains sampled thus far supports the hypothesis that Cluster II Frankia strains came to North America with Datisca glomerata following the Madrean-Tethyan pattern.Electronic supplementary materialThe online version of this article (doi:10.1186/s12864-016-3140-1) contains supplementary material, which is available to authorized users.

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Section: Discussionmentioning

confidence: 99%

An assemblage of Frankia Cluster II strains from California contains the canonical nod genes and also the sulfotransferase gene nodH

et al. 2016

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“…A major advantage of actinorhizal plants over leguminous species lies in the diversity of genera in the former group, within which are plants suited to a wide variety of ecological niches. Limits of pH for nodulation and nitrogen fixation range from pH 3.3 for Myrica gale to pH 9 for Coriaria myrtifolia (Table 4) but as with legumes, nodulation is more sensitive to pH than host plant growth (143,144).…”

Section: Lightmentioning

confidence: 99%

Biochemical, physiological and environmental aspects of symbiotic nitrogen fixation

Dixon

Wheeler

1983

Biological Nitrogen Fixation in Forest Ecosystems: Foundations and Applications

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“…Friday, Texas A&M University. College Station, Texas 264. Harold M. Westergaard, decano de la Escuela de Ingeniería de la Universidad de Harvard.…”

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Contribución al conocimiento de los primeros geotécnicos del siglo XX

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The effect of pH on nodulation and growth ofCoriaria myrtifolia L.

Cited by 7 publications

References 7 publications

An assemblage of Frankia Cluster II strains from California contains the canonical nod genes and also the sulfotransferase gene nodH

An assemblage of Frankia Cluster II strains from California contains the canonical nod genes and also the sulfotransferase gene nodH

Biochemical, physiological and environmental aspects of symbiotic nitrogen fixation

Contribución al conocimiento de los primeros geotécnicos del siglo XX

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