Results 251 to 260 of about 2,554,240 (277)

Confocal Fluorescence Lifetime Imaging of Chlorophyll Molecules in Polymer Matrices

Photochemistry and Photobiology, 1996
Abstract—Confocal fluorescence lifetime imaging has been used to establish the microscopic disposition of chlorophyll molecules in polymer matrices. This study provides a direct test of models proposed on the basis of fluorescence measurements on bulk Alms. We show that whereas chlorophyllbmolecules are uniformly distributed in nitrocellulose matrices,
Sanders, R., van Zandvoort, M.A.M.J., Draaijer, A., Levine, Y.K., Gerritsen, H.C.   +4 more
openaire   +2 more sources

Chlorophyll fluorescence imaging as a tool for analyzing the effects of chilling injury on tomato seedlings

Scientia Horticulturae, 2019
The effect of chilling injury on leaves was studied by chlorophyll fluorescence imaging, which was mainly investigated from spatial heterogeneity, histogram distribution and texture features of chlorophyll fluorescence grayscale images, as a means to ...
Zhenfen Dong, Yuheng Men, Zheng-Ming Li, Q. Zou, J. Ji   +4 more
semanticscholar   +1 more source

Distinction and characterisation of rice genotypes tolerant to combined stresses of salinity and partial submergence, proved by a high-resolution chlorophyll fluorescence imaging system.

Functional Plant Biology, 2019
Chlorophyll a fluorescence (ChlF) parameters measured with fluorescence imaging techniques were used to investigate the combined effect of salt and partial submergence stress to understand photosynthetic performance in rice (Oryza sativa L.).
B. Pradhan, K. Chakraborty, Nibedita Prusty, Deepa, A. Mukherjee, K. Chattopadhyay, R. K. Sarkar   +6 more
semanticscholar   +1 more source

Fluorescence Imaging of Photosynthetic Activity in Stressed Plants Via Chlorophyll Fluorescence

1998
Various stressors such as ozone and highly reactive oxygen species (1O2, O2-, OH, H2O2), air pollution gases (sulfur dioxide, NOX etc.), drought, heat and high-light stress as well as increased levels of UV-radiation will affect the chemical and pigment composition of leaves, their photosynthetic performance and modify their optical and fluorescence ...
Wenzel, Oliver, Lichtenthaler, Hartmut K.   +1 more
openaire   +1 more source

Chlorophyll fluorescence imaging for monitoring effects of Heterobasidion parviporum small secreted protein induced cell death and in planta defense gene expression.

Fungal Genetics and Biology, 2019
Heterobasidion parviporum Niemelä & Korhonen is a necrotrophic fungal pathogen of Norway spruce (Picea abies). The H. parviporum genome encodes numerous necrotrophic small secreted proteins (SSP) which might be important for promoting and sustaining the ...
Zilan Wen, T. Raffaello, Z. Zeng, M. Pavicic, F. Asiegbu   +4 more
semanticscholar   +1 more source

Chlorophyll Fluorescence Imaging of Heavy Metal Treated Plants

1998
Chlorophyll fluorescence has been widely applied as a powerful non-invasive technique for in vivo analysis of plant stress (1,2). In vivo heavy metal stress has also been studied by means of chlorophyll fluorescence (3). In the last years a new approach, the two-dimensional image analysis of the fluorescence signal, has been found very promising.
Massimo Ciscato, Roland Valcke
openaire   +1 more source

Rosis - An Imaging Spectrometer For Rejiote Sensing Of Chlorophyll Fluorescence

SPIE Proceedings, 1989
The "Reflective Optics System Imaging Spectrometer" (ROSIS) is a compact, programmable imaging spetrometer based on a CCD matrix detector array. The instrument has been designed specifically for the monitoring of water color and of natural chlorophyll fluorescence in order to quantitatively derive pigments, suspended matter and yellow substance ...
Roland Doerffer, Bernd Kunkel, Heinz van der Piepen   +2 more
openaire   +1 more source

Nighttime Chlorophyll Fluorescence Imaging of Dark-Adapted Plants Using a Robotic Field Phenotyping Platform.

Methods in molecular biology, 2022
M. Newcomb, N. Shakoor
semanticscholar   +1 more source

Detecting low-oxygen stress of stored apples using chlorophyll fluorescence imaging and histogram division

Postharvest Biology and Technology, 2022
Tim-Pascal Schlie, W. Dierend, Dirk Köpcke, T. Rath   +3 more
semanticscholar   +1 more source

Image Instrumentation of Chlorophyll a Fluorescence for Diagnosing Photosynthetic Injury

2002
Environmental stress factors such as air pollutants, agricultural chemicals, water deficit, chilling, and UV light can affect the health of plants (Larcher 1995; Kramer and Boyer 1995; Yunus and Iqbal 1996; De Kok and Stulen 1998). The first symptoms to appear are decreases in photosynthesis and growth.
Kenji Omasa, Kotaro Takayama
openaire   +1 more source