Asian Journal of Plant Sciences1682-39741812-5697Asian Network for Scientific Information10.3923/ajps.2009.308.312OzlerH. PehlivanS. BayrakF. 4200984This study reports the free amino acid content of pollen grains obtained from old and fresh samples belonging to Pinus nigra subsp. nigra var. caramanica (Loudon) Rehder (black pine) (Pinaceae), Juglans regia L. (walnut) (Juglandaceae), Fraxinus angustifolia Vahl. (ash) (Oleaceae) and Betula pendula L. (birch) (Betulaceae) obtained with the technique of Liquid Chromatography-Mass Spectrometry (LC/MS). Pollen samples were obtained from flowers of the above mentioned taxa in different years. Twenty one amino acids were identified. No histidine was found in F. angustifolia collected 8 years ago. Total protein content of P. nigra subsp. nigra var. caramanica pollens (25.75%) was higher than the remaining taxa; F. angustifolia (13.67%), B. pendula (7.73%) and J. regia (7.55%).]]>Aytug, B.,19671967Aytug, B., A. Efe and C. Kursad,1990Allergent pollence of thrace) Allergen pollens of Thrace.]]>326788Belmonte, J., C. Galan and P.H. Hidalgo,20002000pp: 19Burge, H.A. and C.A. Rogers,2000108653659Desai, M.J. and D.W. Armstrong,200439177187Dogan, C. and S. Erik,1995163367Evans, D.E., P.E. Taylor and M.B. Singh,1991Brassica napus L.]]>73117126Gu, L., A.D. Jones and R.L. Last,20077980678075Holmquist, L., A. Ekebom, K.A. Kubler and O. Vesterberg,200544104107Inceoglu, O., N.M. Pinar, N. Sakiyan and K. Sorkun,199433158161Jianjun, L., Q. Jurong, D. Zhenglin and C. Keling,1995Citrus anther and pollen fertility.]]>4196166Karmakar, P.R. and B.P. Chatterjee,1992Cocos nucifera pollen allergens.]]>17441452Kim, Y.T., C. Glerum, J. Stoddart and S.J. Colombo,1987172730Knox, R.B. and J. Heslop-Harrison,197062451459Krogard, H. and S. Anderson,2006Nicotiana alata anthers during development in vivo.]]>57527531Lowry, O.H., N.J. Rosebrough, A.L. Farr and R.J. Randall,1951193265275Mandal, S., B.K. Datta and G.N. Bhattacharyya,1993Mahuca indica Gmel. and Spathodea campanulata Beauv.]]>9197200Mondal, A.K., S. Parui and S. Mandal,1998Ipomoea fistulosa L.-A comparative study.]]>5131134Mondal, A.K., S. Parui and S. Mandal,1998Asteraceae species of known allergenic activitiy.]]>51720Natrova, Z.,196810118126Nilsson, S. and F.T. Spieksma,1994Schappi, G.F., P.E. Taylor, I.A. Staff, J.M. Polland and C. Suphioglu,199954478483Ozcan, S. and H. Şenyuva,20061135179185Parui, S. and S. Mandal,1998Datura metel L.]]>746668Pehlivan, S., H. Ozler and F. Bayrak,200335154Rashed, M.H., G.H. Davarynejad, M. Nasiri, A. Vatanpoor and L. Laszlo,1995Pistacia sp.]]>4196166Russell, S.D., P.L. Bhalla and B. Singh,2008Oryza sativa ssp. japonica).]]>1751759Shahali, Y., A. Majd, Z. Pourpak, G. Tajadod, M. Haftlang and M. Moin,2007Cupressus arizonica planted in Tehran.]]>6123127Singh, A.B., P. Malik, S.V. Gangal and C.R. Babu,1992Ricinus communis (castor bean) prepared from different source materials.]]>31229235Stanley, R.G. and H.F. Linskens,1974Vega-Maray, A.M., D. Fernandez-Gonzales, R. Valencia-Barrera and M. Suarez-Cervera,2006Parietaria judaica pollen grains.]]>228115120Vik, H., E. Florvaag and S. Elsayed,1987Betula verrucosa) pollen as compared with a local partially purified extract.]]>587177King, T.P., P.S. Norman and N. Tao,1974118392