Book of Abstracts - Geyseco

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03 - S - Selected Abstracts for Oral Presentations in propane cooled with liquid N2 the leaf pieces were sectioned with a cryo-microtome (20 μm) and freeze dried. Two regions of tealeaf cross-section (epidermis–mesophyll, xylem– phloem; 80 x 80 μm 2 ) were raster scanned with 1.7 keV excitation energy to reach the Al-K absorption edge, and then again with 2.2 keV excitation energy to reach the P-K absorption edge. Al was localized mainly in the cell walls of the leaf epidermal cells where Al was not associated with P or Si. Mesophyll cell walls emitted a weak Al signal, while no Al signal was obtained from the symplast. Contrastingly, Al was more-or-less evenly distributed in the xylem–phloem region, with a slightly higher signal obtained from the phloem region. The Al signal was significantly lower than that recorded from the epidermis–mesophyll region. However, the localization of Al in the phloem region suggests that tea plants are able to retrieve Al from the transpiration stream and to redistribute it via phloem transport. LEXRF spectro-microscopy proofed to be a reliable tool for Al localization in plant tissues. Acknowledgements: Supported by BFU2007-60332/BFI and EU TWIN MIC 20095369 S
POST 04 POSTERS • Environmental Stresses And Acclimation P01 • Vegetative Development P02 • System Biology and -omics P03 • Reproductive Development P04 • Biotechnology P05 • Root Biology P06 • Molecular Mechanism of Abiotic Stress P07 • Photosyntesis and Respiration P08 • Natural Variation and Adaptation P09 • Signalling and Gene Expression P10 • Cell Biology P11 • Epigenetics P12 • Metabolism P13 • Plant and Global Change P14 • Plant Microbe Interaction P17 • Water and Minerals P18
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Author Index Aarts, M.G. S18-002 Ab
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Cattivelli, L. P01-031 Cawly, J. P1
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Gallego, B. P17-037 Gallego, P.P. P
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Kersten, B. P10-017 Keskin, O. P05-
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Miguel, C. S02-001, P01-122 Milhinh
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Ramiro, M. P09-018 Ramon, M P13-002
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Tanimoto, E. P01-045 Tarakanov, I.
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Book of Abstracts - Geyseco

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