alexa Elevated CO2 Influences Metal Homeostasis And Actinorhizal Symbiosis In Early Successional Alder Shrubs
ISSN: 2157-7617

Journal of Earth Science & Climatic Change
Open Access

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3rd International Conference on Earth Science & Climate Change
July 28-30, 2014 DoubleTree by Hilton Hotel San Francisco Airport, USA

Nina Pourhassan, Jean-Philippe Bellenger, Thomas Wichard and S?bastien Roy
Posters: J Earth Sci Clim Change
DOI: 10.4172/2157-7617.S1.015
Abstract
The increasing atmospheric CO 2 concentration could stimulate terrestrial ecosystem growth and create an important carbon sink that could slow down climate change due to anthropogenic activities. The extent of this enhanced growth will strongly depend upon the availability of nitrogen (N) to plant. In alder, the predominant N 2 fixing tree in boreal forest, the ability to establish actinorhizal symbiosis will thus be a key. How high CO 2 concentration and exogenous N impact actinorhizal symbiosis remains is poorly known. In this study on Alnus rugosa , the author evaluated the effect of CO 2 and exogenous N availability on (i) the efficiency and development of the actinorhizal symbiosis and (ii) on the homeostasis of essential nutrients for N2 fixation such as phosphorus and molybdenum. The author reported that Frankia sp. infection (i) is the primary factor controlling nutrient homeostasis in plant and (ii) is critically to alder response to elevated CO 2 .
Biography
Nina Pourhassan got her MSc degree in Analytical Sciences from Universit? de Strasbourg (UDS) in France (2011). She did her Master internship in laboratory of Dynamic and Molecular Structure by Mass Spectrometry. Her main project was implementation of the coupling of CIEF/ESITOF-MS and CIEF/MALDITOF-MS, application to the separation and characterization of intact proteins. Currently, she is a PhD student at Univerist? de Sherbrooke (UdeS) Canada in Chemistry. She is working in laboratory of Biogeochemistry Terrestrial. Her research is focused on metals acquisition within symbiotic associations via metallophore.
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