tailieunhanh - báo cáo khoa học: " Arabidopsis thaliana outer ovule integument morphogenesis: Ectopic expression of KNAT1 reveals a compensation mechanism"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Arabidopsis thaliana outer ovule integument morphogenesis: Ectopic expression of KNAT1 reveals a compensation mechanism | BMC Plant Biology BioMed Central Research article Arabidopsis thaliana outer ovule integument morphogenesis Ectopic expression of KNATI reveals a compensation mechanism Elisabeth Truernit 1 2 and Jim Haseloff1 Open Access Address University of Cambridge Department of Plant Sciences Downing Site Cambridge CB2 3EA UK and 2INRA Centre de Versailles Institut Jean-Pierre Bourgin Laboratoire de Biologie Cellulaire Route de St-Cyr 78026 Versailles cedex France Email ElisabethTruernit - etruernit@ Jim Haseloff-jh295@ Corresponding author Published 14 April 2008 Received 21 January 2008 BMC Plant Biology 2008 8 35 doi 1471-2229-8-35 Accepted 14 April 2008 This article is available from http 1471-2229 8 35 2008 Truernit and Haseloff licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract Background The Arabidopsis outer ovule integument is a simple two-cell layered structure that grows around the developing embryo and develops into the outer layer of the seed coat. As one of the functions of the seed coat is the protection of the plant embryo the outer ovule integument is an example for a plant organ whose morphogenesis has to be precisely regulated. Results To better characterise outer ovule integument morphogenesis we have isolated some marker lines that show GFP expression in this organ. We have used those lines to identify distinct cell types in the outer integument and to demonstrate similarities between leaves and the outer integument. Using confocal microscopy we showed that cell sizes and shapes differ between the two cell layers of the outer integument. Expression of KNAT1 in the integuments .

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