Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Minireview cung cấp cho các bạn kiến thức về ngành y đề tài: Moonlight in Vermont illuminates plant development. | Meeting report Moonlight in Vermont illuminates plant development Olivier Voinnet and Kim Baumann Addresses Institut de Biologie Moléculaire des Plantes du CNRS rue du General Zimmer 67084 Strasbourg France. Mediant Cambridge Miller s Yard Mill Lane Cambridge CB2 1RQ UK. Correspondence Olivier Voinnet. Email Published 29 December 2006 Genome Biology 2006 7 334 doi gb-2006-7-l2-334 The electronic version of this article is the complete one and can be found online at http 2006 7 12 334 2006 BioMed Central Ltd A report on the FASEB summer research conference Mechanisms in plant development Saxtons River USA 5-9 August 2006. This year s FASEB meeting on plant development covered a wide range of topics including patterning cell specification and the evolution of developmental mechanisms. The plant hormone auxin and some recently discovered small regulatory RNAs emerged clearly as key regulators of many developmental processes. Also notable was the variety of tools involved in the work presented ranging from molecular genetics and genomics to imaging and computational modeling. A feast of auxin Many presentations showed how highly specific patterns of auxin distribution strongly influence plant growth and development. Establishment and maintenance of such patterns depend largely on active transport mechanisms mediated by the PIN family of efflux carriers which localize to the plasma membrane at one pole of the cell. Cellular responses to auxin involve rapid changes in gene expression regulated by auxin response factors ARFs and AUX IAA proteins. ARFs bind directly to DNA to activate or repress transcription a process inhibited by their heterodimerization with AUX IAAs. Auxin derepresses ARF functions by promoting the ubiquitination and degradation of AUX IAAs. During embryogenesis the zygote undergoes cell division growth and cell-type specification events that ensure the correct positioning of embryonic .
