Ice propagation in plants under radiation frost

Ice propagation in plants under radiation frost

Introduction
Ice propagation in plants under radiation frostInfrared differential thermal analysis (IDTA) and differential imaging chlorophyll fluorescence (DIF) are employed simultaneously to localize ice nucleation and to study the two dimensional pattern of ice propagation in leaves and mesophyll freeze dehydration as detected by a significant increase of basic chlorophyll fluorescence (F0).

Research Questions

  • Visualization of ice propagation in plant tissues
  • Localization of ice nucleation
  • Rates of ice propagation
  • Determination of protective ice barriers
  • Freeze dehydration of mesophyll cells

Publications
NEUNER G., PRAMSOHLER M.: Seasonal change of freezing and heat tolerance of PS2 compared to ice nucleation, frost and heat damage in evergreen subalpine plants. Physiologia Plantarum, 126, 196-204 (2006).
HACKER, J., NEUNER, G.: Ice propagation in plants visualized at the tissue level by IDTA (infrared differential thermal analysis). Tree Physiology, 27, 1661-1670 (2007).
HACKER, J., NEUNER, G.: Ice propagation in dehardened alpine plant species studied by infrared differential thermal analysis (IDTA). Arctic, Antarctic and Alpine Research, 40 (4), 660-670 (2008).
HACKER, J., SPINDELBÖCK, J., NEUNER, G.: Mesophyll freezing and effects of freeze dehydration visualized by simultaneous measurement of IDTA and differential imaging chlorophyll fluorescence. Plant, Cell & Environment, 31, 1725-1733 (2008).

Funding
2004-2008  FWF-Project P17188-B03 (PI: Gilbert NEUNER)

Personnel involved
Jürgen HACKER
Gilbert NEUNER

Nach oben scrollen