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The Plant Vascular System: Evolution, Development and Functions

Journal of Integrative Plant Biology 2013年第4期55卷 294-388页

作者： William J. Lucas Andrew Groover Raffael Lichtenberger Kaori Furuta Shri-Ram Yadav Yk Helariutta Xin-Qiang He Hiroo Fukuda Julie Kang Siobhan M. Brady John W. Patrick John Sperry Akiko Yoshida Ana-Flor López-Millan Michael A. Grusak Pradeep Kachroo Department of Plant Biology College of Biological Sciences University of California US Forest Service Pacific SW Res Stn Institute for Forest Genetics Institute of Biotechnology/Department of Biology and Environmental Sciences University of Helsinki State Key Laboratory of Protein and Plant Gene Research College of Life Sciences Peking University Department of Biological Sciences Graduate School of Science The University of Tokyo Biology Department University of Northern Iowa School of Environmental and Life Sciences The University of Newcastle Biology Department University of Utah Plant Nutrition Department Aula Dei Experimental Station (CSIC) USDA-ARS Children's Nutrition Research Center Department of Pediatrics Baylor College of Medicine Department of Plant Pathology College of Agriculture University of Kentucky

The emergence of the tracheophyte-based vascular system of land plants had major impacts on the evolution of terrestrial biology, in general, through its role in facilitating the development of plants with increased stature, photosynthetic output, and ability to colonize a greatly expanded range of environmental habitats. Recently, considerable progress has been made in terms of our understanding of the developmental and physiological programs involved in the formation and function of the plant vascular system. In this review, we first examine the evolutionary events that gave rise to the tracheophytes, followed by analysis of the genetic and hormonal networks that cooperate to orchestrate vascular development in the gymnosperms and angiosperms. The two essentialfunctions performed by the vascular system, namely the delivery of resources （water, essential mineral nutrients, sugars and amino acids） to the various plant organs and provision of mechanical support are next discussed. Here, we focus on critical questions relating to structural and physiological properties controlling the delivery of material through the xylem and phloem. Recent discoveries into the role of the vascular system as an effective long-distance communication system are next assessed in terms of the coordination of developmental, physiological and defense-related processes, at the whole-plant level. A concerted effort has been made to integrate all these new findings into a comprehensive picture of the state-of-the-art in the area of plant vascular biology. Finally, areas important for future research are highlighted in terms of their likely contribution both to basic knowledge and applications to primary industry.

关键词： Evolution vascular development phloem xylem nutrient delivery long-distance communication systemic signaling.

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