02: Introduction to the fluid mechanics and thermodynamics of cavitation in plants

0:00:00 Start 0:01:05 Structure of Talk 0:01:44 Very short history of land plant evolution 0:04:41 Rapid radiation of vascular plants 0:05:16 Xylem structure of vascular plants 0:07:45 Part 1 – Outline of the cohesion - tension theory 0:07:48 Anatomic features of the plant water transport system 0:08:19 Experimental evidence for sap flow 0:10:06 Outline of the cohesion – tension theory 0:15:44 Description of sap flow 0:21:14 Hazards to water transport 0:21:46 Experimental evidence for cavitation 0:22:19 Hazards to water transport – spontaneous cavitation 0:27:25 Hazards to water transport – air seeding 0:33:31 Safety measures against embolism 0:45:27 Condition for dissolution of mechanically stable bubbles 0:51:33 Xylem structure of vascular plants 0:53:53 Part2 – Restoration of conductivity and possible complications 0:53:56 Restoration of conductivity – basic idea of repair scenario 0:59:43 Bubble evolution after cavitation 1:02:10 Evolution of lumen bubble after cavitation 1:04:34 Evolution of pit bubble after caviation 1:07:07 Evolution of pit bubble near restoration of conductivity 1:09:22 Complications of the repair scenario 1:14:27 Summary Dozent: Dr. Dr. Wilfried Konrad | Department of Geosciences, University of Tübingen, Germany Institute of Botany, Technical University of Dresden, Germany Vorlesungsaufzeichnung: KIT | WEBCAST http://webcast.kit.edu