Role and significance of sucrose-6-phosphate phosphatase in regulating sucrose biosynthesis and carbon artitioning in photosynthetic and non-photosynthetic tissues [Elektronische Ressource] / von Shuai Chen

Role and significance of sucrose-6-phosphate phosphatase in regulating sucrose biosynthesis and carbon partitioning in photosynthetic and non-photosynthetic tissues Dissertation zur Erlangung des akademischen Grades Doktor der Naturwissenschaften -Dr. rer. nat.- vorgelegt der Mathematisch-Naturwissenschaftlich-Technischen Fakultät (mathematisch-naturwissenschaftlicher Bereich) der Martin-Luther-Universität Halle-Wittenberg von Herrn Shuai Chen geb. am 29. 08. 1975 in Shandong, Volksrepublik China 1. Gutachter: Prof. Dr. Uwe Sonnewald 2. Gutachter: Prof. Dr. Klaus Humbeck Halle (Saale), den 29. August 2005 urn:nbn:de:gbv:3-000008943[http://nbn-resolving.de/urn/resolver.pl?urn=nbn%3Ade%3Agbv%3A3-000008943]Contents Contents 1 Introduction 1 1.1 Sink and source concept 1 1.2 Carbon partitioning between starch- and sucrose-synthesis in source leaves 2 1.3 Sucrose synthesis in source leaves 4 1.4 Phloem loading and long-distance transport of sucrose 6 1.5 Sucrose unloading and metabolism in sink organs 7 1.6 Sink regulation of photosynthesis and sugar signalling 10 1.7 Reversed genetics approaches for the identification of metabolic control steps 13 1.8 Chemical-inducible expression of transgenes to study plant metabolism 15 1.9 Scientific aims of this work 17 2 Materials and methods 18 2.