BrainMap

Denisa-Ioana (Gheorghe) Răuță

- UNIVERSITATEA NAȚIONALĂ DE ȘTIINȚĂ ȘI TEHNOLOGIE POLITEHNICA BUCUREȘTI

PhD student

Expertise & keywords

Integrated use of the next generation plant biostimulants for an enhanced sustainability of field vegetable high residue farming systems Call name: EEA Grants - Proiecte Colaborative de Cercetare
RO-NO-2019-0540 2020 - 2024

Role in this project:

Coordinating institution: Institutul National de Cercetare-Dezvoltare pentru Chimie si Petrochimie - ICECHIM Bucuresti

Project partners: Institutul National de Cercetare-Dezvoltare pentru Chimie si Petrochimie - ICECHIM Bucuresti (RO); Norwegian Institute for Water Research (NO); INSTITUTUL DE CHIMIE MACROMOLECULARA "PETRU PONI" (RO); Norgenotech AS (NO); ENPRO SOCTECH COM SRL (RO); AMIA INTERNATIONAL IMPORT EXPORT S.R.L. (RO)

Affiliation:

Project website: https://icechim.ro/project/stim4plus-en/

Abstract:

The project addresses mainly the thematic area of Biotechnology, more exactly the key topic Biotechnology for agriculture, aquaculture, forestry and biomass production. The biotechnological solutions which STIM4+ project proposes to develop are intended to compensate the negative effects of the low-input, high-residue sustainable vegetable production systems. These proposed biotechnological solutions are related to the use of the next generation plant biostimulants. Plant biostimulants represent an emerging class of agricultural input, which protect plants against abiotic stress, enhance / benefits nutrients uptake and improve yield quality . The proposed plant biostimulants to be used for an enhanced sustainability of field vegetables grown in a high residue system are including into all classes / subclasses mentioned in the new EU Regulation 1009/2019. The multi-functional Trichoderma strains-based plant biostimulants (a microbial plant biostimulants) will be included into a glycodinameric, chitosan based bioactive (micro)hydrogel formulation. Decoration of microgels with anchor peptides will be used as a (micro)hydrogel tackifier on the plant residues. The bioactive hydrogel is based on an organic plant biostimulants (chitosan), which will be used to generate a biocompatible 3D porous structure, thermo- and pH-responsive and with a hydrophilic – hydrophobic segregation feature. This hydrophilic – hydrophobic segregation (micro)hydrogels will be used for embedding hydrophobic mimetic strigolactones. Propper application technologies of such smart formulated hydrophobic molecules will be developed, to exploit strigolactones both functions, as exo-signals for a better harnessing of beneficial microbiome and as cue for deleterious organisms (e.g. to induce suicidal germination of parasitic plants). The smart formulated bioproducts / agricultural inputs and the agricultural practices intended to exploit their specific features of such bioproducts are an example of biotechnologies for agriculture. The natural strigolactones mimics will be a part of the microbial standardized extract, which we intend to produce from microalgae culture and which is another example of organic plant biostimulant. This microbial standardized extract will include natural strigolactones, polyamines and betaines. Both strigolactones and polyamines are exo- and endo-signals. As exo-signals, both strigolactones and polyamines have been demonstrated to enhance mycorrhizae hyphal branching and root colonization. As endo-signals, both strigolactones and polyamines are involved in plant stress responses. Betaine also supports plant response to stress, especially to drought. Strigolactone mimics used for laboratory screening will be synthetized based on a rational bio-design. The inorganic plant biostimulants are represented by selenium, as zerovalent nano-selenium. A large body of evidence demonstrates that selenium acts as a plant biostimulant. Selenium protects plants against abiotic stress, especially drought, enhances / benefits nutrient uptake and improves edible yield quality. Nanoselenium (zerovalent) particles show a much lower environmental impact and an improved efficiency compared to other selenium species. Application of selenium nanoparticles reduces the risk of accumulation of polyamines in the edible yield. From a food safety point-of-view, accumulation of polyamines in vegetables grown into HV mulch could have some carcinogenic effects, because polyamines were found to support proliferation of various tumor cells.

The project is an interdisciplinary one and address also other key topics as Environmental impact and risk assessment of the modern, new and emerging technologies and products. Safety and environmental impact of the new developed products will be determined by a state-of-art 3R techniques, by Norway partners. The project contributes to the objectives and the priorities of the call. It supports research cooperation between Romania and Norway and consolidate a strategic partnership.

Biogenic nano-system for targeted delivery of bioactive ingredients on dysbiosis biofilm involved in gingivitis and periodontitis Call name: P 2 - SP 2.1 - Proiect experimental - demonstrativ
PN-III-P2-2.1-PED-2019-4527 2020 - 2022

Role in this project:

Coordinating institution: Institutul National de Cercetare-Dezvoltare pentru Chimie si Petrochimie - ICECHIM Bucuresti

Project partners: Institutul National de Cercetare-Dezvoltare pentru Chimie si Petrochimie - ICECHIM Bucuresti (RO)

Affiliation:

Project website: https://icechim.ro/project/bionanogum-en/

Abstract:

BioNanoGum project proposal aims to develop an innovative biogenic nano-system for resolution of dysbiosis oral biofilms and inflammation involved in gingivitis and periodontitis, based on an innovative bacterial nanocellulose - fungal (nano)chitosan stimuli-responsive hydrogel, biogenic selenium nanoparticles (bioSeNPs), and hollow pollen shells filled with biogenic silica nanoparticles (bioSiOxNPs). Gingivitis and periodontitis affect more than 30% of globe population and can lead to teeth loss, but also other complications and severe diseases (Alzheimer, diabetes, autoimmune diseases). SeNPs, silicic acid released from SiOxNPs, and chitosan nano-structures determine (frank) resolution of dysbiosis biofilms and inflammation. However, there are also several drawbacks such as a very narrow physiological window (in the case of Se), or induced inflammation through a MAMPs similar mechanism, mediated by the Toll-like receptors (in the case of SiOxNPs). New formulations are needed in order to reduce risks of negative effects and to optimize the beneficial effects. BioNanoGum will use compounds acting complementary to SeNPs, which will lead to the reduction of Se dose. The pollen shells, obtained by Kombucha fermentation, will be used as encapsulation carriers for SiOxNPs, which allows bearing benefits from the anti-inflammatory, anti-bacterial and wound-healing effects of the silicic acid slowly released from bioSiOxNPs. The biogenic nano-system will deliver different components into a complementary manner and will act both on the resolution of pathogenic biofilms and on that of inflammation. BioNanoGum involves the niche between biotechnology and nanotechnology with health applications. This niche market has a significant growing potential, because it addresses several of the main health problems in the European Union and worldwide, from the beginning of the 21st century : an ageing population, with an increased incidence of non-communicable / chronic disease.

FILE DESCRIPTION	DOCUMENT
List of research grants as project coordinator or partner team leader
Significant R&D projects for enterprises, as project manager
R&D activities in enterprises
Peer-review activity for international programs/projects