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Journal articles on the topic 'Actinorhizal symbiosis'

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Published: 4 June 2021

Last updated: 1 February 2022

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1

Wall, Luis Gabriel. "The Actinorhizal Symbiosis." Journal of Plant Growth Regulation 19, no. 2 (2000): 167–82. http://dx.doi.org/10.1007/s003440000027.

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Ribeiro, Ana, Inês Graça, Katharina Pawlowski, and Patrícia Santos. "Actinorhizal plant defence-related genes in response to symbiotic Frankia." Functional Plant Biology 38, no. 9 (2011): 639. http://dx.doi.org/10.1071/fp11012.

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Actinorhizal plants have become increasingly important as climate changes threaten to remake the global landscape over the next decades. These plants are able to grow in nutrient-poor and disturbed soils, and are important elements in plant communities worldwide. Besides that, most actinorhizal plants are capable of high rates of nitrogen fixation due to their capacity to establish root nodule symbiosis with N2-fixing Frankia strains. Nodulation is a developmental process that requires a sequence of highly coordinated events. One of these mechanisms is the induction of defence-related events,

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Ribeiro, Ana, Alison M. Berry, Katharina Pawlowski, and Patrícia Santos. "Actinorhizal plants." Functional Plant Biology 38, no. 9 (2011): v. http://dx.doi.org/10.1071/fpv38n9_fo.

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Actinorhizal plants are a group of taxonomically diverse angiosperms with remarkable economic and ecological significance. Most actinorhizal plants are able to thrive under extreme adverse environmental conditions as well as to fix atmospheric nitrogen due to their capacity to establish root nodule symbioses with Frankia bacteria. This special issue of Functional Plant Biology is dedicated to actinorhizal plant research, covering part of the work presented at the 16th International Meeting onFrankia and Actinorhizal Plants, held on 5–8 September 2010, in Oporto, Portugal. The papers (4 reviews

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Popovici, Jean, Gilles Comte, Ã¯Â¿Â½milie Bagnarol, et al. "Differential Effects of Rare Specific Flavonoids on Compatible and Incompatible Strains in the Myrica gale-Frankia Actinorhizal Symbiosis." Applied and Environmental Microbiology 76, no. 8 (2010): 2451–60. http://dx.doi.org/10.1128/aem.02667-09.

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ABSTRACT Plant secondary metabolites, and specifically phenolics, play important roles when plants interact with their environment and can act as weapons or positive signals during biotic interactions. One such interaction, the establishment of mutualistic nitrogen-fixing symbioses, typically involves phenolic-based recognition mechanisms between host plants and bacterial symbionts during the early stages of interaction. While these mechanisms are well studied in the rhizobia-legume symbiosis, little is known about the role of plant phenolics in the symbiosis between actinorhizal plants and Fr

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Pawlowski, Katharina, and Kirill N. Demchenko. "The diversity of actinorhizal symbiosis." Protoplasma 249, no. 4 (2012): 967–79. http://dx.doi.org/10.1007/s00709-012-0388-4.

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Berry, Alison M., Alberto Mendoza-Herrera, Ying-Yi Guo, et al. "New perspectives on nodule nitrogen assimilation in actinorhizal symbioses." Functional Plant Biology 38, no. 9 (2011): 645. http://dx.doi.org/10.1071/fp11095.

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Nitrogen-fixing root nodules are plant organs specialised for symbiotic transfer of nitrogen and carbon between microsymbiont and host. The organisation of nitrogen assimilation, storage and transport processes is partitioned at the subcellular and tissue levels, in distinctive patterns depending on the symbiotic partners. In this review, recent advances in understanding of actinorhizal nodule nitrogen assimilation are presented. New findings indicate that Frankia within nodules of Datisca glomerata (Presl.) Baill. carries out both primary nitrogen assimilation and biosynthesis of arginine, ra

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Roy, Sébastien, Damase P. Khasa, and Charles W. Greer. "Combining alders, frankiae, and mycorrhizae for the revegetation and remediation of contaminated ecosystems." Canadian Journal of Botany 85, no. 3 (2007): 237–51. http://dx.doi.org/10.1139/b07-017.

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Alder shrubs and trees that are capable of forming symbioses with mycorrhizal fungi and the nitrogen-fixing actinomycete Frankia sp. are particularly hardy species found worldwide in harsh and nutrient-deficient ecosystems. The mycorrhizal symbiosis may assist alders in nutrient and water uptake, while the actinorhizal symbiosis provides assimilable nitrogen. It is through these highly efficient symbioses, in which microsymbionts benefit from plant photosynthates, that actinorhizal plants such as alders colonize poor substrates, enrich soil, and initiate plant succession. These natural capabil

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Pawlowski, Katharina, Didier Bogusz, Ana Ribeiro, and Alison M. Berry. "Progress on research on actinorhizal plants." Functional Plant Biology 38, no. 9 (2011): 633. http://dx.doi.org/10.1071/fp11066.

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In recent years, our understanding of the plant side of actinorhizal symbioses has evolved rapidly. No homologues of the common nod genes from rhizobia were found in the three Frankia genomes published so far, which suggested that Nod factor-like molecules would not be used in the infection of actinorhizal plants by Frankia. However, work on chimeric transgenic plants indicated that Frankia Nod factor equivalents signal via the same transduction pathway as rhizobial Nod factors. The role of auxin in actinorhizal nodule formation differs from that in legume nodulation. Great progress has been m

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Pawlowski, Katharina, Susan Swensen, Changhui Guan, Az-Eddine Hadri, Alison M. Berry, and Ton Bisseling. "Distinct Patterns of Symbiosis-Related Gene Expression in Actinorhizal Nodules from Different Plant Families." Molecular Plant-Microbe Interactions® 16, no. 9 (2003): 796–807. http://dx.doi.org/10.1094/mpmi.2003.16.9.796.

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Phylogenetic analyses suggest that, among the members of the Eurosid I clade, nitrogen-fixing root nodule symbioses developed multiple times independently, four times with rhizobia and four times with the genus Frankia. In order to understand the degree of similarity between symbiotic systems of different phylogenetic subgroups, gene expression patterns were analyzed in root nodules of Datisca glomerata and compared with those in nodules of another actinorhizal plant, Alnus glutinosa, and with the expression patterns of homologous genes in legumes. In parallel, the phylogeny of actinorhizal pl

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Benabdoun, Faïza Meriem, Mathish Nambiar-Veetil, Leandro Imanishi, et al. "Composite Actinorhizal Plants with Transgenic Roots for the Study of Symbiotic Associations with Frankia." Journal of Botany 2011 (November 1, 2011): 1–8. http://dx.doi.org/10.1155/2011/702947.

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More than 200 species of dicotyledonous plants belonging to eight different families and 24 genera can establish actinorhizal symbiosis with the nitrogen-fixing soil actinomycete Frankia. Compared to the symbiotic interaction between legumes and rhizobia, little is known about the molecular basis of the infection process and nodule formation in actinorhizal plants. Here, we review a gene transfer system based on Agrobacterium rhizogenes that opens the possibility to rapidly analyze the function of candidate symbiotic genes. The transformation protocol generates “composite plants” that consist

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Kucho, Ken-ichi, Anne-Emmanuelle Hay, and Philippe Normand. "The Determinants of the Actinorhizal Symbiosis." Microbes and Environments 25, no. 4 (2010): 241–52. http://dx.doi.org/10.1264/jsme2.me10143.

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Froussart, Emilie, Jocelyne Bonneau, Claudine Franche, and Didier Bogusz. "Recent advances in actinorhizal symbiosis signaling." Plant Molecular Biology 90, no. 6 (2016): 613–22. http://dx.doi.org/10.1007/s11103-016-0450-2.

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Sasakura, Fuyuko, Toshiki Uchiumi, Yoshikazu Shimoda, et al. "A Class 1 Hemoglobin Gene from Alnus firma Functions in Symbiotic and Nonsymbiotic Tissues to Detoxify Nitric Oxide." Molecular Plant-Microbe Interactions® 19, no. 4 (2006): 441–50. http://dx.doi.org/10.1094/mpmi-19-0441.

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Actinorhizal symbiosis is as important in biological nitrogen fixation as legume-rhizobium symbiosis in the global nitrogen cycle. To understand the function of hemoglobin (Hb) in actinorhizal symbiosis, we characterized a Hb of Alnus firma, AfHb1. A cDNA that encodes nonsymbiotic Hb (nonsym-Hb) was isolated from a cDNA library of A. firma nodules probed with LjHb1, a nonsym-Hb of Lotus japonicus. No homolog of symbiotic Hb (sym-Hb) could be identified by screening in the cDNA library or by polymerase chain reaction (PCR) using degenerate primers for other sym-Hb genes. The deduced amino acid

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Benson, David R., James M. Brooks, Ying Huang, Derek M. Bickhart, and Juliana E. Mastronunzio. "The Biology of Frankia sp. Strains in the Post-Genome Era." Molecular Plant-Microbe Interactions® 24, no. 11 (2011): 1310–16. http://dx.doi.org/10.1094/mpmi-06-11-0150.

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Progress in understanding symbiotic determinants involved in the N2-fixing actinorhizal plant symbioses has been slow but steady. Problems persist with studying the bacterial contributions to the symbiosis using traditional microbiological techniques. However, recent years have seen the emergence of several genomes from Frankia sp. strains and the development of techniques for manipulating plant gene expression. Approaches to understanding the bacterial side of the symbiosis have employed a range of techniques that reveal the proteomes and transcriptomes from both cultured and symbiotic franki

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Beauchemin, Nicholas J., Teal Furnholm, Julien Lavenus, et al. "Casuarina Root Exudates Alter the Physiology, Surface Properties, and Plant Infectivity of Frankia sp. Strain CcI3." Applied and Environmental Microbiology 78, no. 2 (2011): 575–80. http://dx.doi.org/10.1128/aem.06183-11.

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ABSTRACTThe actinomycete genusFrankiaforms nitrogen-fixing symbioses with 8 different families of actinorhizal plants, representing more than 200 different species. Very little is known about the initial molecular interactions betweenFrankiaand host plants in the rhizosphere. Root exudates are important inRhizobium-legume symbiosis, especially for initiating Nod factor synthesis. We measured differences inFrankiaphysiology after exposure to host aqueous root exudates to assess their effects on actinorhizal symbioses.Casuarina cunninghamianaroot exudates were collected from plants under nitroge

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Anne-Emmanuelle, Hay, Boubakri Hasna, Buonomo Antoine, et al. "Control of Endophytic Frankia Sporulation by Alnus Nodule Metabolites." Molecular Plant-Microbe Interactions® 30, no. 3 (2017): 205–14. http://dx.doi.org/10.1094/mpmi-11-16-0235-r.

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A unique case of microbial symbiont capable of dormancy within its living host cells has been reported in actinorhizal symbioses. Some Frankia strains, named Sp+, are able to sporulate inside plant cells, contrarily to Sp− strains. The presence of metabolically slowed-down bacterial structures in host cells alters our understanding of symbiosis based on reciprocal benefits between both partners, and its impact on the symbiotic processes remains unknown. The present work reports a metabolomic study of Sp+ and Sp− nodules (from Alnus glutinosa), in order to highlight variabilities associated wit

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Schrader, James A., and William R. Graves. "Nodulation and Growth of Alnus nitida and Alnus maritima Inoculated with Species-specific and Nonspecific Frankia." Journal of Environmental Horticulture 26, no. 1 (2008): 29–34. http://dx.doi.org/10.24266/0738-2898-26.1.29.

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Abstract Actinorhizal plants form N2-fixing symbioses with soil-borne bacteria of the genus Frankia. Potential exists for development of sustainable, actinorhizal nursery crops that obtain most of their required N through N2 fixation, but information on host-symbiont specificity, presence of compatible Frankia in soils, and techniques to inoculate during plant production is lacking. Our objectives were to determine the effect of inoculum type and source and the effect of supplemental N on nodulation, growth, and N content of two actinorhizal species, Alnus nitida (Spach) Endl. and Alnus mariti

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18

Popovici, Jean, Vincent Walker, Cédric Bertrand, Floriant Bellvert, Maria P. Fernandez, and Gilles Comte. "Strain specificity in the Myricaceae - Frankia symbiosis is correlated to plant root phenolics." Functional Plant Biology 38, no. 9 (2011): 682. http://dx.doi.org/10.1071/fp11144.

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Plant secondary metabolites play an important role in the interaction between plants and their environment. For example, mutualistic nitrogen-fixing symbioses typically involve phenolic-based recognition between host plants and bacteria. Although these mechanisms are well studied in the rhizobia–legume symbiosis, little is known about the role of plant phenolics in the symbiosis between actinorhizal plants and the actinobacterium Frankia. In this study, the responsiveness of two Myricaceae plant species, Myrica gale L. and Morella cerifera L., to Frankia inoculation was correlated with the pla

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Svistoonoff, Sergio, Laurent Laplaze, Florence Auguy, et al. "cg12 Expression Is Specifically Linked to Infection of Root Hairs and Cortical Cells during Casuarina glauca and Allocasuarina verticillata Actinorhizal Nodule Development." Molecular Plant-Microbe Interactions® 16, no. 7 (2003): 600–607. http://dx.doi.org/10.1094/mpmi.2003.16.7.600.

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cg12 is an early actinorhizal nodulin gene from Casuarina glauca encoding a subtilisin-like serine protease. Using transgenic Casuarinaceae plants carrying cg12-gus and cg12-gfp fusions, we have studied the expression pattern conferred by the cg12 promoter region after inoculation with Frankia. cg12 was found to be expressed in root hairs and in root and nodule cortical cells containing Frankia infection threads. cg12 expression was also monitored after inoculation with ineffective Frankia strains, during my-corrhizae formation, and after diverse hormonal treatments. None of these treatments w

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Mastronunzio, J. E., Y. Huang, and D. R. Benson. "Diminished Exoproteome of Frankia spp. in Culture and Symbiosis." Applied and Environmental Microbiology 75, no. 21 (2009): 6721–28. http://dx.doi.org/10.1128/aem.01559-09.

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ABSTRACT Frankia species are the most geographically widespread gram-positive plant symbionts, carrying out N2 fixation in root nodules of trees and woody shrubs called actinorhizal plants. Taking advantage of the sequencing of three Frankia genomes, proteomics techniques were used to investigate the population of extracellular proteins (the exoproteome) from Frankia, some of which potentially mediate host-microbe interactions. Initial two-dimensional sodium dodecyl sulfate-polyacrylamide gel electrophoresis analysis of culture supernatants indicated that cytoplasmic proteins appeared in super

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Auguy, Florence, Khalid Abdel-Lateif, Patrick Doumas, et al. "Activation of the isoflavonoid pathway in actinorhizal symbioses." Functional Plant Biology 38, no. 9 (2011): 690. http://dx.doi.org/10.1071/fp11014.

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We investigated the involvement of flavonoids in the actinorhizal nodulation process resulting from the interaction between the tropical tree Casuarina glauca Sieb. ex Spreng. and the actinomycete Frankia. Eight C. glauca genes involved in flavonoid biosynthesis: chalcone synthase (CHS), chalcone isomerase (CHI), isoflavone reductase (IFR), flavonoid-3-hydroxylase (F3H), flavonoid 3′-hydroxylase (F3′H), flavonoid 3′,5′ hydroxylase (F3′5′H), dihydroflavonol 4-reductase (DFR) and flavonol synthase (FLS), were identified from a unigene database and gene expression patterns were monitored by quant

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22

Berg, R. Howard. "Cytoplasmic bridge formation in the nodule apex of actinorhizal root nodules." Canadian Journal of Botany 77, no. 9 (1999): 1351–57. http://dx.doi.org/10.1139/b99-078.

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High-pressure frozen - freeze-substituted actinorhizal root nodules of several distantly related plant genera were used to document the sequence of structural changes in cortical cells of the nodule apex that happened prior to their infection. The sequence of mobilization of the plant cell cytoplasm requisite to infection by Frankia was (i) penetration of the parenchyma cell vacuole by cytoplasmic strands, which contained microtubules; (ii) movement of the nucleus and other organelles (Golgi stacks, endoplasmic reticulum, mitochondria), involved later in growth of the infection thread, to the

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Imanishi, Leandro, Alice Vayssières, Claudine Franche, Didier Bogusz, Luis Wall, and Sergio Svistoonoff. "Transformed Hairy Roots of Discaria trinervis: A Valuable Tool for Studying Actinorhizal Symbiosis in the Context of Intercellular Infection." Molecular Plant-Microbe Interactions® 24, no. 11 (2011): 1317–24. http://dx.doi.org/10.1094/mpmi-03-11-0078.

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Among infection mechanisms leading to root nodule symbiosis, the intercellular infection pathway is probably the most ancestral but also one of the least characterized. Intercellular infection has been described in Discaria trinervis, an actinorhizal plant belonging to the Rosales order. To decipher the molecular mechanisms underlying intercellular infection with Frankia bacteria, we set up an efficient genetic transformation protocol for D. trinervis based on Agrobacterium rhizogenes. We showed that composite plants with transgenic roots expressing green fluorescent protein can be specificall

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Lancelle, Susan A., and John G. Torrey. "Early development of Rhizobium-induced root nodules of Parasponia rigida. II. Nodule morphogenesis and symbiotic development." Canadian Journal of Botany 63, no. 1 (1985): 25–35. http://dx.doi.org/10.1139/b85-005.

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The Rhizobium-induced root nodules of Parasponia rigida (Ulmaceae) outwardly resemble those formed on actinorhizal plants, being coralloid in shape and consisting of multiple, branched lobes. The details of nodule morphogenesis also resemble more closely those which occur in an actinorhizal association than a typical Rhizobium–legume association and include prenodule formation, initiation of modified lateral roots which are termed nodule lobe primordia, and rhizobial colonization of tissues derived from the nodule lobe primordia to form the primary nodule lobes. Mature nodule lobe structure is

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Zhong, Chonglu, Samira Mansour, Mathish Nambiar-Veetil, Didier Bogusz, and Claudine Franche. "Casuarina glauca: A model tree for basic research in actinorhizal symbiosis." Journal of Biosciences 38, no. 4 (2013): 815–23. http://dx.doi.org/10.1007/s12038-013-9370-3.

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Froussart, Emilie, Chonglu Zhong, Qingbin Jiang, Jocelyne Bonneau, Didier Bogusz, and Claudine Franche. "Biotechnological strategies for studying actinorhizal symbiosis in Casuarinaceae: transgenesis and beyond." Symbiosis 70, no. 1-3 (2016): 101–9. http://dx.doi.org/10.1007/s13199-016-0400-4.

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27

Bélanger, Pier-Anne, Jean-Philippe Bellenger, and Sébastien Roy. "Strong modulation of nutrient distribution in Alnus glutinosa as a function of the actinorhizal symbiosis." Botany 91, no. 4 (2013): 218–24. http://dx.doi.org/10.1139/cjb-2012-0184.

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Micro- and macro-nutrient acquisition by plants and microorganisms is a cornerstone for their survival and has a direct impact on biogeochemical cycling. In this study, we investigated, in controlled conditions, how the availability of exogenous nitrate impacted nutrient acquisition and distribution in black alder (Alnus glutinosa (L.) Gaertn.) in the presence, or absence, of its nitrogen-fixing bacterial symbiont (Frankia sp.). Our findings show that alder physiology and distribution of nutrients between aerial and root tissues were strongly influenced by the presence of the symbiont. In both

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Roy, Alice, and Jean Bousquet. "The evolution of the actinorhizal symbiosis through phylogenetic analysis of host plants." Acta Botanica Gallica 143, no. 7 (1996): 635–50. http://dx.doi.org/10.1080/12538078.1996.10515365.

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Bélanger, Pier-Anne, Jean-Philippe Bellenger, and Sébastien Roy. "Heavy metal stress in alders: Tolerance and vulnerability of the actinorhizal symbiosis." Chemosphere 138 (November 2015): 300–308. http://dx.doi.org/10.1016/j.chemosphere.2015.06.005.

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Deicke, Michael, Jan Frieder Mohr, Sébastien Roy, Peter Herzsprung, Jean-Philippe Bellenger, and Thomas Wichard. "Metallophore profiling of nitrogen-fixingFrankiaspp. to understand metal management in the rhizosphere of actinorhizal plants." Metallomics 11, no. 4 (2019): 810–21. http://dx.doi.org/10.1039/c8mt00344k.

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Bélanger, Pier-Anne, Cyntia Bissonnette, Audrey Bernèche-D’Amours, Jean-Philippe Bellenger, and Sébastien Roy. "Assessing the adaptability of the actinorhizal symbiosis in the face of environmental change." Environmental and Experimental Botany 74 (December 2011): 98–105. http://dx.doi.org/10.1016/j.envexpbot.2011.05.004.

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Gabbarini, Luciano Andrés, and Luis Gabriel Wall. "Diffusible factors involved in early interactions of actinorhizal symbiosis are modulated by the host plant but are not enough to break the host range barrier." Functional Plant Biology 38, no. 9 (2011): 671. http://dx.doi.org/10.1071/fp11003.

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Nodulation kinetics were analysed in two nitrogen-fixing actinorhizal symbioses that show different pathways for infection: Alnus acuminata H. B. K., which is infected by Frankia ArI3, and Discaria trinervis (Hooker et Arnot) Reiche, which is infected by Frankia BCU110501. Both pairs are incompatible in cross-inoculation experiments. The dose–response effects in nodulation were studied in A. acuminata seedlings using different concentrations of compatible and incompatible bacteria in co-inoculation experiments. Restriction fragment length polymorphism PCR analysis and plant-trapping analysis s

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Alloisio, Nicole, Clothilde Queiroux, Pascale Fournier, et al. "The Frankia alni Symbiotic Transcriptome." Molecular Plant-Microbe Interactions® 23, no. 5 (2010): 593–607. http://dx.doi.org/10.1094/mpmi-23-5-0593.

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The actinobacteria Frankia spp. are able to induce the formation of nodules on the roots of a large spectrum of actinorhizal plants, where they convert dinitrogen to ammonia in exchange for plant photosynthates. In the present study, transcriptional analyses were performed on nitrogen-replete free-living Frankia alni cells and on Alnus glutinosa nodule bacteria, using whole-genome microarrays. Distribution of nodule-induced genes on the genome was found to be mostly over regions with high synteny between three Frankia spp. genomes, while nodule-repressed genes, which were mostly hypothetical a

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Imanishi, Leandro, Alice Vayssières, Claudine Franche, Didier Bogusz, Luis Wall, and Sergio Svistoonoff. "Transformed Hairy Roots of the actinorhizal shrub Discaria trinervis: a valuable tool for studying actinorhizal symbiosis in the context of intercellular infection." BMC Proceedings 5, Suppl 7 (2011): P85. http://dx.doi.org/10.1186/1753-6561-5-s7-p85.

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Franche, Claudine, Philippe Normand, Katharina Pawlowski, Louis S. Tisa, and Didier Bogusz. "An update on research on Frankia and actinorhizal plants on the occasion of the 18th meeting of the Frankia-actinorhizal plants symbiosis." Symbiosis 70, no. 1-3 (2016): 1–4. http://dx.doi.org/10.1007/s13199-016-0431-x.

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Gabbarini, Luciano Andrés, and Luis Gabriel Wall. "Diffusible factors from Frankia modify nodulation kinetics in Discaria trinervis, an intercellular root-infected actinorhizal symbiosis." Functional Plant Biology 38, no. 9 (2011): 662. http://dx.doi.org/10.1071/fp11015.

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Frankia BCU110501 induces nitrogen-fixing root nodules in Discaria trinervis (Gillies ex Hook. & Arn.) Reiche (Rhamnaceae) via intercellular colonisation, without root hair deformation. It produces diffusible factors (DFs) that might be involved in early interactions with the D. trinervis roots, playing a role in the nodulation process. The induction of root nodule development in actinorhizal symbiosis would depend on the concentration of factors produced by the bacteria and the plant. A detailed analysis of nodulation kinetics revealed that these DFs produce changes at the level of initia

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Goetting-Minesky, M. P., and B. C. Mullin. "Differential gene expression in an actinorhizal symbiosis: evidence for a nodule-specific cysteine proteinase." Proceedings of the National Academy of Sciences 91, no. 21 (1994): 9891–95. http://dx.doi.org/10.1073/pnas.91.21.9891.

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Liu, Jieyu, and Ton Bisseling. "Evolution of NIN and NIN-like Genes in Relation to Nodule Symbiosis." Genes 11, no. 7 (2020): 777. http://dx.doi.org/10.3390/genes11070777.

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Legumes and actinorhizal plants are capable of forming root nodules symbiosis with rhizobia and Frankia bacteria. All these nodulating species belong to the nitrogen fixation clade. Most likely, nodulation evolved once in the last common ancestor of this clade. NIN (NODULE INCEPTION) is a transcription factor that is essential for nodulation in all studied species. Therefore, it seems probable that it was recruited at the start when nodulation evolved. NIN is the founding member of the NIN-like protein (NLP) family. It arose by duplication, and this occurred before nodulation evolved. Therefor

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Nouioui, Imen, Faten Ghodhbane-Gtari, Maria P. Fernandez, Abdellatif Boudabous, Philippe Normand, and Maher Gtari. "Absence of Cospeciation between the UnculturedFrankiaMicrosymbionts and the Disjunct ActinorhizalCoriariaSpecies." BioMed Research International 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/924235.

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Coriariais an actinorhizal plant that forms root nodules in symbiosis with nitrogen-fixing actinobacteria of the genusFrankia. This symbiotic association has drawn interest because of the disjunct geographical distribution ofCoriariain four separate areas of the world and in the context of evolutionary relationships between host plants and their uncultured microsymbionts. The evolution ofFrankia-Coriariasymbioses was examined from a phylogenetic viewpoint using multiple genetic markers in both bacteria and host-plant partners. Total DNA extracted from root nodules collected from five species:C

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Duponnois, R., S. Diédhiou, J. L. Chotte, and M. Ourey Sy. "Relative importance of the endomycorrhizal and (or) ectomycorrhizal associations in Allocasuarina and Casuarina genera." Canadian Journal of Microbiology 49, no. 4 (2003): 281–87. http://dx.doi.org/10.1139/w03-038.

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This work was carried out to determine the relative importance of the endomycorrhizal and (or) ectomycorrhizal association in species of Casuarina and Allocasuarina. Under axenic conditions, Pisolithus and Scleroderma isolates formed ectomycorrhizas with a mantle and a Hartig net on Allocasuarina verticillata but failed to form a Hartig net on Casuarina glauca. In a controlled soil system, C. glauca was inoculated with the endomycorrhizal fungus Glomus intraradices Schenck & Smith, and A. verticillata was inoculated with Pisolithus albus IR100 Bougher & Smith and (or) G. intraradices.

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Myers, Anna K., and Louis S. Tisa. "Isolation of antibiotic-resistant and antimetabolite-resistant mutants ofFrankiastrains EuI1c and Cc1.17." Canadian Journal of Microbiology 50, no. 4 (2004): 261–67. http://dx.doi.org/10.1139/w04-013.

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Antibiotic-resistant and antimetabolite-resistant mutants of the nitrogen-fixing symbiotic bacterium Frankia were isolated to provide strains with genetic backgrounds amenable to genetic analysis. The lethal and mutagenic effects of ethyl methanesulfonate (EMS) and UV light on four Frankia strains were investigated. UV irradiation or EMS treatment of strain EuI1c cells resulted in the formation of two different colony types: rough and smooth. The smooth colonies were conditional sporulation mutants. In the case of EMS-induced cells of strain Cc1.17, resistance to lincomycin, ampicillin, and 5-

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Valverde, Claudio, Alejandro Ferrari, and Luis Gabriel Wall. "Effects of calcium in the nitrogen-fixing symbiosis between actinorhizal Discaria trinervis (Rhamnaceae) and Frankia." Symbiosis 49, no. 3 (2009): 151–55. http://dx.doi.org/10.1007/s13199-009-0046-6.

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Tisa, Louis S., Rediet Oshone, Indrani Sarkar, Amir Ktari, Arnab Sen, and Maher Gtari. "Genomic approaches toward understanding the actinorhizal symbiosis: an update on the status of the Frankia genomes." Symbiosis 70, no. 1-3 (2016): 5–16. http://dx.doi.org/10.1007/s13199-016-0390-2.

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Pourhassan, Nina, Thomas Wichard, Sébastien Roy, and Jean-Philippe Bellenger. "Impact of elevated CO2 on metal homeostasis and the actinorhizal symbiosis in early successional alder shrubs." Environmental and Experimental Botany 109 (January 2015): 168–76. http://dx.doi.org/10.1016/j.envexpbot.2014.07.014.

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Clawson, Michael L., Jeffrey Gawronski, and David R. Benson. "Dominance ofFrankiastrains in stands ofAlnus incanasubsp.rugosaandMyrica pensylvanica." Canadian Journal of Botany 77, no. 9 (1999): 1203–7. http://dx.doi.org/10.1139/b99-070.

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To address issues of dominance and diversity of Frankia spp. strains, we sequenced 16S rRNA genes from root nodules and strains collected from Alnus incana subsp. rugosa (Du Roi) R.T. Clausen and Myrica pensylvanica Loisel. stands. Of 22 strains isolated previously from A. incana, 16 had the same partial rDNA sequence; the remaining 6 strains composed five additional groups. The groups identified by 16S rDNA analysis corresponded to phenotypic groups established previously by one- and two-dimensional polyacrylamide gel analysis, colony and hyphal morphology, and carbon source utilization patte

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Valverde, Claudio, Alejandro Ferrari, and Luis Gabriel Wall. "Phosphorus and the regulation of nodulation in the actinorhizal symbiosis between Discaria trinervis (Rhamnaceae) and Frankia BCU110501." New Phytologist 153, no. 1 (2002): 43–51. http://dx.doi.org/10.1046/j.0028-646x.2001.00298.x.

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Svistoonoff, Sergio, Laurent Laplaze, Jingsi Liang, et al. "Infection-Related Activation of the cg12 Promoter Is Conserved between Actinorhizal and Legume-Rhizobia Root Nodule Symbiosis." Plant Physiology 136, no. 2 (2004): 3191–97. http://dx.doi.org/10.1104/pp.104.048967.

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Schwencke, Jaime, and Margarita Carú. "Advances in Actinorhizal Symbiosis: Host Plant- Frankia Interactions, Biology, and Applications in Arid Land Reclamation. A Review." Arid Land Research and Management 15, no. 4 (2001): 285–327. http://dx.doi.org/10.1080/153249801753127615.

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Bonaldi, Katia, Hassen Gherbi, Claudine Franche, et al. "The Nod Factor–Independent Symbiotic Signaling Pathway: Development of Agrobacterium rhizogenes–Mediated Transformation for the Legume Aeschynomene indica." Molecular Plant-Microbe Interactions® 23, no. 12 (2010): 1537–44. http://dx.doi.org/10.1094/mpmi-06-10-0137.

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The nitrogen-fixing symbiosis between Aeschynomene indica and photosynthetic bradyrhizobia is the only legume-rhizobium association described to date that does not require lipochito-oligosaccharide Nod factors (NF). To assist in deciphering the molecular basis of this NF-independent interaction, we have developed a protocol for Agrobacterium rhizogenes-mediated transformation of A. indica. The cotransformation frequency (79%), the nodulation efficiency of transgenic roots (90%), and the expression pattern of the 35S Cauliflower mosaic virus promoter in transgenic nodules were all comparable to

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Mathesius, Ulrike. "Auxin: at the root of nodule development?" Functional Plant Biology 35, no. 8 (2008): 651. http://dx.doi.org/10.1071/fp08177.

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Root nodules are formed as a result of an orchestrated exchange of chemical signals between symbiotic nitrogen fixing bacteria and certain plants. In plants that form nodules in symbiosis with actinorhizal bacteria, nodules are derived from lateral roots. In most legumes, nodules are formed de novo from pericycle and cortical cells that are re-stimulated for division and differentiation by rhizobia. The ability of plants to nodulate has only evolved recently and it has, therefore, been suggested that nodule development is likely to have co-opted existing mechanisms for development and differen

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