Zuzana BenediktyovaPhoton Systems Instruments | PSI · Testing Laboratory
Zuzana Benediktyova
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6
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Publications
Publications (6)
Heat tolerance of plants related to cell membrane thermostability is commonly estimated via the measurement of ion leakage from plant segments after defined heat treatment. To compare heat tolerance of various plants, it is crucial to select suitable heating conditions. This selection is time-consuming and the optimization of conditions for all inv...
Multi-color fluorescence emission from leaf tissues is presented as a powerful reporter on plant biochemistry and physiology that can be applied both at macro- and micro-scales. The blue-green fluorescence emission is typically excited by ultraviolet (UV) excitation. However, this approach cannot be applied in investigating intact leaf interior bec...
Localized infection of a plant can be mapped by a sequence of images capturing chlorophyll fluorescence transients in actinic light. Choice of the actinic light protocol co-determines fluorescence contrast between infected leaf segment and surrounding healthy tissue. Frequently, biology cannot predict with which irradiance protocol, in which fluore...
Pathogen infection leads to defence induction as well as to changes in carbohydrate metabolism of plants. Salicylic acid and
oxylipins are involved in the induction of defence, but it is not known if these signalling molecules also mediate changes
in carbohydrate metabolism. In this study, the effect of application of salicylic acid and the oxylipi...
Oxygenic photosynthesis of higher plants requires linear electron transport that is driven by serially operating Photosystem II and Photosystem I reaction centers. It is widely accepted that distribution of these two types of reaction centers in the thylakoid membrane is heterogeneous. Here, we describe two optical microscopic techniques that can b...
![Figure 1. Dependence of [u] on the BSA concentration, t = 25 @BULLET C.](profile/Peter-Rybar/publication/8592358/figure/fig1/AS:340619005317128@1458221307630/Dependence-of-u-on-the-BSA-concentration-t-25-BULLET-C_Q320.jpg)
![Figure 2. Time course of [u] for the water solution of BSA at presence...](profile/Peter-Rybar/publication/8592358/figure/fig2/AS:669307591745558@1536586773781/Time-course-of-u-for-the-water-solution-of-BSA-at-presence-of-50-mol-l-CuSO4-t-25_Q320.jpg)
The methods of ultrasound velocity and density measurements were used to study the adiabatic compressibility of bovine serum albumin (BSA) during its oxidation by the prooxidants Cu2+ and 2,2'-azobis(2-amidinopropane) hydrochloride (AAPH). We did not find changes of compressibility of BSA in the presence of copper ions at rather high molar ratio Cu...
Projects
Projects (2)
Plants and algae live in nature in a light that often fluctuates around a mean level. The dynamics of photosynthesis have been, however, mostly studied by measuring the response of plants and algae to a dark-to-light transition or short and intense flashes of light. None of these is a good approximation of the natural light environment. We propose to study the plant dynamics in response to sinusoidally modulated light of varying frequency and amplitude. The approach and tools are inspired by the enormous success of frequency analysis in physics and engineering.
