Abstract
Actinorhizal plants are well-known for their symbiotic association with the actinobacteria Frankia. However, little is known about their association with other diverse non-Frankia actinobacteria. These bacteria are found within same microniche as Frankia, and have attracted interest in regard to their ecophysiological roles in these environments. Most of these actinobacteria isolated from actinorhizal plants are classified as members of the Streptomyces, Micromonospora, Nocardia, and Actinoplanes genera. Analysis of the physiological properties of these actinobacteria demonstrated their metabolic versatility including biosynthetic potential to produce phytohormones and antimicrobials, and their capacity to act as “helper” bacteria to facilitate plant nodulation. Three genomes from these non-Frankia actinobacteria have been sequenced. Initial analysis of the first two genome sequences available indicates differences in their genome plasticity and genetic content reflecting genome stability variation between the two genomes.
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Acknowledgments
FG-G was supported in part by a Visiting Scientist and Postdoctoral Fellowship Program administered by the NH Agricultural Experimental Station at the University of New Hampshire. LST was supported in part by Agriculture and Food Research Initiative Grant 2010-65108-20581 from the USDA National Institute of Food and Agriculture, Hatch grant NH530, and The College of Life Sciences and Agriculture at the University of New Hampshire, Durham, NH.
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Ghodhbane-Gtari, F., Tisa, L.S. (2014). Ecology and Physiology of Non-Frankia Actinobacteria from Actinorhizal Plants. In: Katsy, E. (eds) Plasticity in Plant-Growth-Promoting and Phytopathogenic Bacteria. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-9203-0_2
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DOI: https://doi.org/10.1007/978-1-4614-9203-0_2
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