Functional analysis of Nt-Hypo1 and NtPLC3, two novel pollen-specific proteins from Nicotiana tabacum [Elektronische Ressource] / presented by Diana Helling

Dissertation submitted to the Combined Faculties for the Natural Sciences and for Mathematics of the Ruperto-Carola University of Heidelberg, Germany for the degree of Doctor of Natural Sciences presented by Diana Helling born in: Bielefeld, Germany thOral-examination: December 7 , 2005 Functional Analysis of Nt-Hypo1 and NtPLC3, Two Novel Pollen-Specific Proteins From Nicotiana tabacum Referees: Prof. Dr. Thomas Rausch Prof. Dr. David G. Robinson CONTENTS Contents.................................................................................................................................I Summary .......................................................................................................................... VII Zusammenfassung .............................................................................................................IX 1 Introduction ................................................................................................................. 1 1.1 Pollen tube growth: a model system for polarized plant cell growth .................... 1 1.1.1 Ion gradients and fluxes involved in polarized pollen tube growth .............. 3 1.1.1.1 Calcium...................................................................................................... 3 1.1.1.2 Protons..................................................