Nodulation and molecular characterization of pure cultures isolated from root nodules ofCoriaria nepalensis

Hu, Chuanjiong; Zhou, P; Zhou, Qi; Chen, Huakui; Akkermans, A.D.L.

doi:10.1007/bf02883580

Cited by 2 publications

(2 citation statements)

References 6 publications

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“…Group 1 strains are specifically associated with members of the Rosaceae, Datiscaceae, Coriariaceae, and Ceanothus of the Rhamnaceae (Clawson et al 2003). Members of this group capable of reinfecting the host plants have proven refractory to isolation attempts (Mirza et al 1992), although there is a report of recent success (Hu et al 1997).…”

Section: Introductionmentioning

confidence: 99%

Low genetic diversity amongFrankiaspp. strains nodulating sympatric populations of actinorhizal species of Rosaceae,Ceanothus(Rhamnaceae) andDatisca glomerata(Datiscaceae) west of the Sierra Nevada (California)

Heuvel

Benson²,

Bortiri³

et al. 2004

Can. J. Microbiol.

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Frankia spp. strains typically induce N2-fixing root nodules on actinorhizal plants. The majority of host plant taxa associated with the uncultured Group 1 Frankia strains, i.e., Ceanothus of the Rhamnaceae, Datisca glomerata (Datiscaceae), and all actinorhizal members of the Rosaceae except Dryas, are found in California. A study was conducted to determine the distribution of Frankia strains among root nodules collected from both sympatric and solitary stands of hosts. Three DNA regions were examined, the 5' end of the 16S rRNA gene, the internal transcribed spacer region between the 16S and 23S rRNA genes, and a portion of the glutamine synthetase gene (glnA). The results suggest that a narrow range of Group 1 Frankia spp. strains dominate in root nodules collected over a large area of California west of the Sierra Nevada crest with no apparent host-specificity. Comparisons with Group 2 Frankia strain diversity from Alnus and Myrica within the study range suggest that the observed low diversity is peculiar to Group 1 Frankia strains only. Factors that may account for the observed lack of genetic variability and host specificity include strain dominance over a large geographical area, current environmental selection, and (or) a past evolutionary bottleneck.

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Section: Introductionmentioning

confidence: 99%

Low genetic diversity amongFrankiaspp. strains nodulating sympatric populations of actinorhizal species of Rosaceae,Ceanothus(Rhamnaceae) andDatisca glomerata(Datiscaceae) west of the Sierra Nevada (California)

Heuvel

Benson²,

Bortiri³

et al. 2004

Can. J. Microbiol.

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“…(2n = 40) 1 , also known as Masuri Berry, is a shrub belonging to the genus Coriaria of the unigeneric Coriariaceae family, and is mainly distributed in the Himalayan region. C. nepalensis is a non-legume nitrogen-fixing plant that forms root nodules with the actinomycete Frankia 2 , 3 . The biological ability of nitrogen-fixation in this species contributes to its rehabilitation capacity of nutrient-poor degraded land 4 , 5 ; in combination with its osmotic adjustment function and drought tolerance 6 , 7 , C. nepalensis improves the abiotic conditions and provides more suitable habitat for associated plant species 8 – 10 .…”

Section: Background and Summarymentioning

confidence: 99%

Haplotype-resolved genome assembly of Coriaria nepalensis a non-legume nitrogen-fixing shrub

et al. 2023

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Coriaria nepalensis Wall. (Coriariaceae) is a nitrogen-fixing shrub which forms root nodules with the actinomycete Frankia. Oils and extracts of C. nepalensis have been reported to be bacteriostatic and insecticidal, and C. nepalensis bark provides a valuable tannin resource. Here, by combining PacBio HiFi sequencing and Hi-C scaffolding techniques, we generated a haplotype-resolved chromosome-scale genome assembly for C. nepalensis. This genome assembly is approximately 620 Mb in size with a contig N50 of 11 Mb, with 99.9% of the total assembled sequences anchored to 40 pseudochromosomes. We predicted 60,862 protein-coding genes of which 99.5% were annotated from databases. We further identified 939 tRNAs, 7,297 rRNAs, and 982 ncRNAs. The chromosome-scale genome of C. nepalensis is expected to be a significant resource for understanding the genetic basis of root nodulation with Frankia, toxicity, and tannin biosynthesis.

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Nodulation and molecular characterization of pure cultures isolated from root nodules ofCoriaria nepalensis

Cited by 2 publications

References 6 publications

Low genetic diversity amongFrankiaspp. strains nodulating sympatric populations of actinorhizal species of Rosaceae,Ceanothus(Rhamnaceae) andDatisca glomerata(Datiscaceae) west of the Sierra Nevada (California)

Low genetic diversity amongFrankiaspp. strains nodulating sympatric populations of actinorhizal species of Rosaceae,Ceanothus(Rhamnaceae) andDatisca glomerata(Datiscaceae) west of the Sierra Nevada (California)

Haplotype-resolved genome assembly of Coriaria nepalensis a non-legume nitrogen-fixing shrub

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