General Information
on the Workshop
"Leaf Optics"

organised by Claus Buschmann

 

Botanisches Institut, Universität Karlsruhe
   

 

 

The Workshop “Leaf Optics” is intended to bring together scientists from all over the world applying in vivo spectroscopy of leaves in different fields and applications of plant sciences.

 

 

Topics: 

  • Penetration of light into the leaf
  • Detection of scattering, reflectance and fluorescence of leaves

 

Techniques:

  • Microscopy
  • contact/non-contact close distance measurements
  • remote sensing

By restricting the number to a maximum of 30 participants the opportunity for an open and informal exchange of information should be provided. The joint accommodation on the castle of Ebernburg and the pleasant surrounding during the time of vintage provides ideal conditions to make this workshop a success.

 

The first workshop was held between October 9 and 11, 2006 (see photograph of the participants). The next workshop will be announced later.

Monday, October 9

14:00 - 14:30 Claus Buschmann University of Karlsruhe, Karlsruhe, Germany): Introduction and welcome
14:30 - 14:50  Thomas Vogelmann (University of Vermont, Burlington/Vermont, U.S.A):
 Do plant leaves utilize direct and diffuse light the same?
14:50 - 15:10  Giovanni Agati (Consiglio Nazionale delle Ricerche, Sesto Fiorentino, Italy): 
Microfluorescence analysis of plant tissues
15:10 - 15:30  Jan Nauš (Palacky University, Olomouc, Czech Republic):
 The nature of light profile and its effect on the chlorophyll fluorescence rise
 in a leaf model system.
 

 Coffee Break

16:00 - 16:20

  Erhard Pfündel (formerly: University of Würzburg, Kirchberg/Jagst, Germany):
 Chlorophyll fluorescence and cellular constituents: Quantitative relationships
16:20 - 16:40  Vladimír Špunda (Ostrava University, Ostrava, Czech Republic):
 Adjustment of light harvesting studied by 77K chlorophyll a fluorescence spectra
 of intact leaves
16:40 - 17:00  Ladislav Nedbal (University Centre of Nove Hrady, Nove Hrady, Czech Republic):
 Leaf structure and function visualized by wide-field, emission and excitation
 microscopy and by two-photon microscopy (Zuzana BENEDIKTY, Ali RESHAK,
 Vassilios SARAFIS, Ladislav NEDBAL)
17:00 - 17:40

 Jemery Harbinson (University of Wageningen, Wageningen, The Netherlands):
 A mechanistic model for simulating and fitting photosystem I quantum efficiency
 – irradiance curves and its modification for use with photosystem II quantum efficiency
 - irradiance curves

18:00 Dinner (subsequently hanging of the posters)
19:00 - 19:20

 short oral presentation (ca. 3 min each)

 Craig Daughtry (US Department of Agriculture - Agricultural Research Service Beltsville,
 Maryland U.S.A.):
 Measuring leaf chlorophyll content from leaf and canopy reflectance
  
 Jemery Harbinson (University of Wageningen, Wageningen, The Netherlands):
 The cost to the plant of using non-photochemical quenching

 Martin Navrátil (Ostrava University, Ostrava, Czech Republic):
 Parameters of leaf reflectance spectra as indicator of pigment content of Norway spruce needles

 Guy Samson (Université du Québec à Trois-Rivières, Trois-Rivières, Canada):
 Detection and discrimination of nutrient deficiencies (N-P-K) by whole leaf fluorescence
 imaging in sunflower

 Michal Štroch (Ostrava University, Ostrava, Czech Republic):
 Effects of different excitation and detection spectral regions on room temperature chlorophyll
 fluorescence parameters

 Vern Vanderbilt (NASA, Moffett Field/California, U.S.A.):
 Polarization of light from leaves measured from 0.5 - 1.6 mm

 Vern Vanderbilt (NASA, Moffett Field/California, U.S.A.):
 Index of refraction of leaves measured from 0.5 - 2.3 mm

19:20 - 21:00

 Poster viewing and discussion

 Demonstration of instruments

 

Tuesday, October 10

 

08:00 - 08:30 Breakfast
08:50 - 09:30  Zoran Cerovic (Univiersity Paris-Sud XI – CNRS, Orsay, France):
 The importance of the in vivo assessment of plant phenolic compounds
09:30 - 09:50  Guy Samson (Université du Québec à Trois-Rivières, Trois-Rivières, Canada):
 Relationships between epidermal UV absorption, soluble polyphenol concentration and
 antioxidant capacity of leaves from different species and growth conditions
09:50 - 10:10  Wolfgang Bilger (University of Kiel, Kiel, Germany):
 Screening of visible light by anthocyanins in leaves
   Coffee Break
10:40 - 11:00  Anatoly Gitelson (University of Nebraska – Lincoln, Lincoln/Nebraska, U.S.A.):
 Noninvasive estimation of chlorophyll, carotenoids, and anthocyanin contents
 in higher plant leaves: Problems and solutions
11:00 - 11:20  Yiannis Manetas (University of Patras, Patras, Greece):
 Spectral properties of anthocyanic leaves: consequences for photosynthetic
 acclimation and herbivory
11:20 - 12:00  Mark Merzlyak (Moscow State University, Moscow, Russia):
 Optical properties of apple fruit: non-destructive pigment analysis, modeling,
 effects of light stress and ripening
12:00  Lunch
13:00  Autumnal Walk
17:20 - 17:40  Peter Korpiun (PA Group Scheyern (formerly: Technical University of Munich)
 Scheyern, Germany): The photoacoustic effect on leaves in frequency and time domain
17:40 - 18:00  Armin Meister (formerly: Institute of Plant Genetics and Crop Plant Research, Gatersleben,
 Germany): In vivo spectroscopy under socialist conditions
18:00 – 19:00  Dinner (subsequently: Evening at a local winegrower down in the village of Ebernburg)

 

Wednesday, October 11

 

 08:00  Breakfast
 08:50 - 09:30  Kenji Omasa (University of Tokyo, Tokyo, Japan):
 3D imaging from the cell to the canopy level
 09:30 - 09:50  Susan Ustin (University of California, Davis, Davis/California,  U.S.A.):
 Retrieval of water and dry matter content from leaf, canopy and image scales
 09:50 - 10:10

 Frank Veroustrate (Centre for Remote Sensing and Earth Observation (VITO), Mol, Belgium): 
Quantitative chlorophyll imaging at leaf level with a non-destructive field method
 (Veroustraete F., Verstraeten W.W., Kempeneers P., Reusen I. and Debruyn W.)

   Coffee Break
 10:40 - 11:00  Uwe Rascher (Forschungszentrum Jülich, Jülich, Germany):
 Hyperspectral imaging and laser induced fluorescence transients of photosynthesis from the
 single leaf to the complex canopy – quantifying the spatio-temporal variations of photosynthesis
 using non-invasive optical remote sensing
 11:00 - 11:40  Stéphane Jacquemoud (Université Paris 7, Paris, France):
 Modeling spectral, directional, and emissional leaf optical properties: past, present, future
 11:40 - 12:00  Final Discussion
 12:00  Lunch
 13:00  Departure

 

Information about the castle of Ebernburg


If you have any questions concerning the workshop, please contact the following address:

Claus Buschmann
Botanik II
Universität Karlsruhe (T.H.)
Kaiserstr. 12
76128 Karlsruhe
Germany
tel. +49/721/608-4876
fax +49/721/608-4874 (secretary)
E-Mail: Claus Buschmann ∂does-not-exist.botanik2 uni-karlsruhe de