A5074772119- Plant responses to elevated CO2
- Photosynthetic Processes and Mechanisms
- Plant Stress Responses and Tolerance
- Plant Water Relations and Carbon Dynamics
- Light effects on plants
- Atmospheric chemistry and aerosols
- Bioenergy crop production and management
- Plant biochemistry and biosynthesis
- Plant Molecular Biology Research
- Plant and animal studies
- Legume Nitrogen Fixing Symbiosis
- Antioxidant Activity and Oxidative Stress
- Marine and environmental studies
- Allelopathy and phytotoxic interactions
- Ecology and Vegetation Dynamics Studies
- Soybean genetics and cultivation
- Biocrusts and Microbial Ecology
- Species Distribution and Climate Change
- Plant Growth Enhancement Techniques
- Research in Cotton Cultivation
- Seed Germination and Physiology
- Plant responses to water stress
- Plant Parasitism and Resistance
- Essential Oils and Antimicrobial Activity
- Leaf Properties and Growth Measurement
Institute of Plant Physiology and Genetics
2015-2024
Bulgarian Academy of Sciences
2015-2024
Institute of Biophysics and Biomedical Engineering
2011-2024
Planta
2022-2023
Sofia University "St. Kliment Ohridski"
2020
Fondazione Edmund Mach
2014-2017
Helmholtz Zentrum München
2014-2016
Education Labour Relations Council
2016
Institute for Sustainable Plant Protection
2011-2012
National Research Council
2011-2012
Abstract Many plants invest carbon to form isoprene. The role of isoprene in is unclear, but many experiments showed that may have a protecting from thermal damage. A more general antioxidant action has been recently hypothesized on the basis protection offered by exogenous nonemitting exposed acute ozone doses. We inhibited synthesis endogenous feeding fosmidomycin and observed Phragmites australis leaves became sensitive than those forming Photosynthesis, stomatal conductance, fluorescence...
At the whole plant level, effect of stress is usually perceived as a decrease in photosynthesis and growth. That why this review focused mainly on drought photosynthesis, its injury, mechanisms adaptation. The analysed literature shows that plants have evolved number adaptive allow photochemical biochemical systems to cope with negative changes environment, including increased water deficit. In addition, acquisition tolerance includes both phenotypic genotypic changes. approaches were made...
Climate-Smart Forestry (CSF) is an emerging branch of sustainable forest management that aims to manage forests in response climate change. Specific CSF strategies are viewed as a way forward for developing suitable responses and enhancing the provision ecosystem services. However, there currently lack comprehensive cohesive assessment implement CSF. This paper describes step-by-step process developed shared definition CSF, selecting indicators assess "climate-smartness" management....
ABSTRACT Thermotolerance induced by isoprene has been assessed during heat bursts but there is little information on the ability of endogenous to confer thermotolerance under naturally elevated temperature, interaction between isoprene‐induced and light stress, persistence this protection in leaves recovering at lower temperatures. Moderately high temperature treatment (38 °C for 1.5 h) reduced photosynthesis, stomatal conductance, photochemical efficiency photosystem II isoprene‐emitting, a...
Isoprene emission represents a significant loss of carbon to those plant species that synthesize this highly volatile and reactive compound. As tool for studying the role isoprene in physiology biochemistry, we developed transgenic tobacco plants capable emitting similar manner at rates comparable naturally species. Thermotolerance photosynthesis against transient high-temperature episodes could only be observed lines high levels isoprene; effect was very mild identified over repetitive...
Abstract Three biophysical approaches were used to get insight into increased thermostability of thylakoid membranes in isoprene-emittingplants.Arabidopsis (Arabidopsis thaliana) plants genetically modified make isoprene and Platanus orientalis leaves, which emission was chemically inhibited, used. First, the circular dichroism spectrum transition temperature main band at 694 nm higher presence isoprene, indicating that heat stability chiral macrodomains chloroplast membranes, specifically...
Summary The hypothesis was tested that isoprenoids and phenylpropanoids play a prominent role in countering photooxidative stress, following the depletion of antioxidant enzyme activity plants exposed to severe drought stress under high solar irradiance temperatures. Platanus × acerifolia , isoprene‐emitting species, drought‐stressed during summer ( WS ) compared with unstressed controls WW ). Water relations photosynthetic parameters were measured mild, moderate, conditions. Volatile...
We investigated the photosynthetic limitations occurring during dehydration and rehydration of Xerophyta humilis, a poikilochlorophyllous resurrection plant, whether volatile non-volatile isoprenoids might be involved in desiccation tolerance. Photosynthesis declined rapidly after below 85% relative water content (RWC). Raising intercellular CO(2) concentrations suggest that main limitation was photochemical, affecting energy-dependent RuBP regeneration. Imaging fluorescence confirmed both...
The engineering of carbon nanotubes in the last decades resulted a variety applications electronics, electrochemistry, and biomedicine. A number reports also evidenced their valuable application agriculture as plant growth regulators nanocarriers. In this work, we explored effect seed priming with single-walled grafted Pluronic P85 polymer (denoted P85-SWCNT) on Pisum sativum (var. RAN-1) germination, early stages development, leaf anatomy, photosynthetic efficiency. We evaluated observed...
• Isoprene reduces visible damage (necrosis) of leaves caused by exposure to ozone but the mechanism is not known. Here we show that in Phragmites isoprene emission was stimulated after a 3-h high levels. The photosynthetic apparatus which inhibited fosmidomycin became more susceptible than isoprene-emitting leaves. Three days fumigation, necrotic leaf area significantly higher isoprene-inhibited Isoprene-inhibited also accumulated amounts nitric oxide (NO), as detected epifluorescence light...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 405:231-242 (2010) - DOI: https://doi.org/10.3354/meps08538 Abrupt transition of northwestern Black Sea shelf ecosystem from a eutrophic an alternative pristine state Temel Oguz1,*, Violeta Velikova2 1Institute Sciences, Middle East Technical University, PO Box 28, Erdemli 33731, Mersin, Turkey 2Permanent...
Isoprene is emitted by a significant fraction of the world's vegetation. makes leaves more thermotolerant, yet we do not fully understand how. We have recently shown that isoprene stabilizes thylakoid membranes under heat stress. Here show heat-stressed, isoprene-emitting transgenic Arabidopsis plants also produce lower pool reactive oxygen and nitrogen species, this was especially due to accumulation H2O2 in emitting plants. It remains difficult disentangle whether stressed directly reacts...
Isoprene strengthens thylakoid membranes and scavenges stress-induced oxidative species. The idea that isoprene production might also influence isoprenoid phenylpropanoid pathways under stress conditions was tested. We used transgenic tobacco to compare physiological biochemical traits of isoprene-emitting (IE) non-emitting (NE) plants exposed severe drought subsequent re-watering. Photosynthesis less affected by in IE than NE plants, higher rates were observed recovering from drought....
Particulate matter (PM) deposited on Platanus acerifolia tree leaves has been sampled in the urban areas of 28 European cities, over 20 countries, with aim testing leaf particles as indicator atmospheric PM concentration and composition. Leaves have collected close to streets characterized by heavy traffic within parks. Leaf surface density, dimensions, elemental composition compared magnetic content, discussed connection air quality data. The quantity size were mainly dependent regional...
The possible protective role of endogenous isoprene against oxidative stress caused by singlet oxygen ( 1 O 2 ) was studied in the isoprene‐emitting plant Phragmites australis . Leaves emitting and leaves which synthesis inhibited fosmidomycin were exposed to increasing concentrations generated Rose Bengal (RB) sensitizer at different light intensities. In leaves, photosynthesis H malonyldialdehyde (MDA) contents not affected low moderate intensities 800 1240 µmol m −2 s −1 , but symptoms...
ABSTRACT Isoprene and nitric oxide (NO) are two volatile molecules that produced in leaves. Both compounds were suggested to have an important protective role against stresses. We tested, isoprene‐emitting species, Populus nigra Phragmites australis , whether: (1) NO emission outside leaves is measurable affected by oxidative stresses; (2) isoprene protect stresses, both singularly combination. The of was undetectable, the compensation point very low control poplar increased dramatically...
Biogenic isoprene (2-methyl-1,3-butadiene) improves the integrity and functionality of thylakoid membranes scavenges reactive oxygen species (ROS) in plant tissue under stress conditions. On basis available physiological studies, we hypothesized that suppression production poplar by genetic engineering would cause changes chloroplast protein pattern, which turn compensate for overall performance abiotic stress. To test this hypothesis, used a stable isotope-coded protein-labeling technique...
Recent studies have demonstrated that exogenous polyamines protective effects under various stress condition. A broader understanding of the role polyamine pool fine regulation and alterations polyamine‐related physiological processes could be obtained by comparing in different genotypes. In this study, impact pre‐treatment with putrescine response to osmotic was investigated drought‐tolerant Katya drought‐sensitive Zora wheat ( Triticum aestivum ) cultivars. Photosynthetic performance, vivo...
Single-walled carbon nanotubes (SWCNTs) emerge as promising novel carbon-based nanoparticles for use in biomedicine, pharmacology and precision agriculture. They were shown to penetrate cell walls membranes physically interact exchange electrons with photosynthetic complexes vitro. Here, the first time, we studied concentration-dependent effect of foliar application copolymer-grafted SWCNTs on structural functional characteristics intact pea plants. The lowest used concentration 10 mg L−1...