Irina Gostin

Irina Gostin
Universitatea Alexandru Ioan Cuza | UAIC · Botany

PhD

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46
Publications
27,677
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597
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Publications

Publications (46)
Article
Full-text available
In this study, we have investigated the effects of three lipopeptides (fengycin, surfactin and mycosubtilin) produced by different strains of Bacillus subtilis against the phytopathogenic fungi Fusarium oxysporum f. sp. iridacearum, which affects the ornamental bulb plant populations of Iris sp. The antifungal effects were tested using minimum inhi...
Article
Full-text available
The emergence of pathogenic multidrug-resistant bacteria demands new approaches in finding effective antibacterial agents. Synthetic flavonoids could be a reliable solution due to their important antimicrobial activity. We report here the potent in vitro antibacterial activity of ClCl-flav-a novel synthetic tricyclic flavonoid. The antimicrobial ef...
Chapter
Air pollution is a major problem in modern society. During the last century, the interactions between plants and different types of air pollutants were investigated: many studies on the influence of environmental pollution were focused on physiological, biochemical and ultrastructural aspects. The cuticle covers the epidermis external walls from al...
Article
We report the synthesis of M0.25Cu0.25Mg0.5Fe2O4 (where M = Mn, Zn, Co, Ni) nanoparticles using the coprecipitation method in the presence of carboxymethyl cellulose (CMC) as the in-situ surfactant. The crystalline structure and surface morphology were examined by means of X-ray diffraction (XRD) and scanning electron microscopy (SEM) and it was es...
Article
Full-text available
Aims: This study reports on the inhibitory and bactericidal properties of a new synthetized flavonoid. Methods and results: Tricyclic flavonoid 1 has been synthesized through a two-step reaction sequence. The antimicrobial effects were tested using the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) assays. Al...
Article
Full-text available
In the present study, the botanical profile, chemical composition and antioxidant activity of indigenous red raspberry (Rubus idaeus L.) leaves were investigated. The microscopic characterization was determined by means of scanning electronic microscopy and transverse sections. Polyphenols, sterolic compounds and ascorbic acid were determined using...
Poster
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The plastic industry has always been considered a major consumer of energy, natural resources, especially non-renewable fossil fuels, causing significant threatens for the environment. This situation is amplified by the impacts generated during the production and utilization of plastics. The processes applied for plastic manufacturing using petrole...
Poster
Since the benefits of renewable polymers have to be evaluated in relation with the environmental aspects of production, in this study we have applied life cycle assessment (LCA) methodology to compare the environmental impacts generated, on the one hand, in the production process of bacteria-synthesized PHAs from wastewater with high value of bioch...
Article
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Bioplastics are biobased materials, usually easy biodegradable, derived from renewable resources. Evolution of bioplastics production is related to: bio starch and starch mixtures (74.5%); bioplastic products from fermentation (13%), bioplastic from petrochemicals materials (12.5%). They are seen as a viable solution to avoid some environmental imp...
Article
Full-text available
In autumn 2011 in cyprinid farms located in Iasi on the Jijia river, several infections with bacterial strains and macroscopical external cysts on the skin were diagnosed, which developed as a result of the stress induced by biotic and abiotic factors. On the examination of the cyst contents the presence of numerous spores was observed, mostly of t...
Article
Full-text available
In this study the glandular hair morphology, chemical composition and antimicrobial activity of the essential oils from three Ocimum species have been investigated (Ocimum basilicum L. var. Genovese, O. gratissimum and O. tenuiflorum). The indumentum shows little variation among the investigated species with both glandular and non-glandular hairs p...
Article
Full-text available
Histo-anatomical properties of the vegetative organs in endemic Campanula romanica Savul. were presented. The structure of the root, rhizome, stem and leaves (basal and caulinar) was analysed with emphasis to the adaptation of this rare species to the environmental conditions. Moderate xeric features were observed at the anatomical level, despite t...
Article
Full-text available
Between 2009 and 2010, in cyprinid farms located in Iasi and on the Prut River, we diagnosed several infections with bacterial strains, characteristic of mobile species ofAeromonas, and it developed as a result of the stress induced by biotic and abiotic factors. Several anamnetic investigations were carried out, as well as morpho-pathological and...
Article
Different vegetal biomass resources such as Picea abies bark, Castanea sativa chestnuts shell and Asclepias syriaca plant were considered to provide a source of natural bioactive compounds, which can be properly used in several directions such as: plant growth regulators and amendments in bioremediation. Having in mind a complex processing biomass...
Article
Full-text available
In this paper a series of polyurethane (PU) membranes modified by zinc oxide nanoparticles was prepared. The samples were synthesized from 1,6-hexamethylene diisocyanate (HDI), a mixture of polyesters consisting of poly(1,4-butylene adipate) diol (PBA, M 2000) and polycaprolactone diol (PCL, M 2000), dimethylolpropionic acid (DMPA) and 1,4-butane d...
Article
Full-text available
The deciduous semi-woody shrub Perovskia atriplicifolia Benth. (Lamiaceae) is native in the rocky areas of Pakistan, Afganistan, Iran, and Tibet and it is mainly known for the culinary, flavoring and ornamental qualities. The essential oils have pharmacological effects based on the antimicrobial and antimutagenic activity of their constituents. The...
Conference Paper
Perovskia atriplicifolia Benth. is a plant growing in the rocky regions of Afghanistan and Pakistan, known for its febrifuge properties, for culinary use or its decorative qualities. This species is cultivated in Europe, being also experimentally introduced in Romania as a cultivated plant in order to use its medicinal, aromatic and air purifying (...
Article
Full-text available
In the present study, we report enhanced antimicrobial properties of 29 and 23 nm silver nanoparticles (Ag NPs) obtained by electrochemical synthesis in poly(amide-hydroxyurethane) media. Antibacterial activity assessed by disk diffusion method indicates that silver nanoparticles produced inhibition zones for both Escherichia coli and Staphylococcu...
Article
Full-text available
Adonis vernalis is a pontic element and rare plant distributed in grassland communities in the South-East Europe steppe zone. Histo-anatomical and micromorphological investigations regarding root, stem and leaves was carried out in order to emphasize the adaptation of this species to the living environment. The root acquires early secondary structu...
Article
In the present study, we report enhanced antimicrobial properties of 29 and 23 nm silver nanoparticles (Ag NPs) obtained by electrochemical synthesis in poly(amide-hydroxyurethane) media. Antibacterial activity assessed by disk diffusion method indicates that silver nanoparticles produced inhibition zones for both Escherichia coli and Staphylococcu...
Article
Full-text available
The multicellular glands, the epicuticular wax and the tector hairs observed on the leaves are influenced usually by genetic constitution.The paper investigating 8 genetically related varieties: ‘Foc de Tabara’, ’Luchian’ ‘Paprika’, ‘Coup De Foudre’, ‘Independence’, ‘M-me A. Meilland’, ‘Cocktail’, ‘Laminuette’.The micromorphological studies evidenc...
Article
Full-text available
In this paper the structure of the two years old silver fir leaves from polluted and clean sites was comparatively investigated. Under the action of heavy metals (especially Pb, Cu and Zn), important accumulations of tannin and polyphenolic compounds were noticed in epidermis and hypodermis cells and in assimilatory tissues. The transfusion parench...
Conference Paper
The structure and micromorphology of the glandular trichomes, chemical composition and antimicrobial effects of the secreted essential oil of Perovskia atriplicifolia were studied. The volatile oils extraction was conducted using a Clevenger hydrodistillation system. The component separation was performed by gas chromatography using a 6890 Agilant...
Article
Full-text available
Increased preoccupations in fish culture have increased the interest regarding with the bacteria that affect fish health, growth, and survival. The majority of fish bacteriosis can only be identified by the use of microbiological and molecular techniques. In this study the Scanning electron microscope (SEM) was used for the first time in characteri...
Article
Full-text available
The structure and micromorphology of the glandular trichomes and the chemical composition of the secreted essential oil of Perovskia atriplicifolia Benth. were studied. The leaves present numerous glandular trichomes of three morphological distinct types, all of them having a unicellular foot and stalk: 1) capitate hairs with bi-cellular head, 2) p...
Article
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The Erysimum wittmanii ssp. wittmanii is an endemic biennial herbaceous species in South and East Carpathians. In this study the anatomical and micromorphological properties of this specie are investigated. Anatomical properties of root, stem and leaves were underlined. Roots acquire early in ontogenesis the secondary structure. Stems presents coll...
Article
Full-text available
The floral morphology of Adonis vernalis L. was observed with a scanning electron microscope (SEM). The investigations are important to clarify some taxonomical problems and also could provide useful diagnostic elements for the identification of this medicinal plant in powdered materials. All floral organs are initiated spirally and centripetally a...
Data
Full-text available
The paper treats A. levitomentosa reproductive structures from an anatomical point of view. The species exhibited traits that are common in the Asteraceae family but also a few peculiarities such as a possibly five-carpel ovary, free non connate anthers and filaments fused to the corolla at different levels. Early stage embryos but no seeds were ob...
Conference Paper
The objective of this study is to determine the range of variation in certain micromorphological, anatomical and biochemical characters of leaf within three spontaneous Lamiaceae species: Hyssopus officinalis L. (from Montenegro Republic), Thymus comosus Heuff. and Ocimum basilicum L. (both from Romania) The research material was collected in anthe...
Article
Full-text available
Plants growing in the industrial areas and near the major roads absorb the pollutants at their foliar surface. In this paper, histological changes induced by air pollutants (from a cement factory combined with the pollution generated by human activities) in Lotus corniculatus L., Trifolium montanum L., T. pratense L. and T. repens L. leaves were fo...
Article
Full-text available
Ultrastructural aspects of leaf epicuticular waxes were investigated in Buxus sempervirens by scanning electron microscopy. The leaves were hypostomatic and stomata were surrounded with a cuticular thickening that formed a rim. The most prominent epicuticular wax structures of B. sempervirens leaves included granules and platelets.
Article
Full-text available
Some structural parameters of Plantago lanceolata leaves, which may be considered as biomarkers, were investigated, in order to establish what modifications occur under the pollutants action. The material was represented by leaves of different ages collected from sites with different pollution degrees of the Ceahlau Mountain.External symptoms such...
Article
Full-text available
The multicellular clavate glands observed in the adaxial face of the leaf, the edge of the leaf, the rachis and stipules elaborate volatile oils whose chemic composition changes at the same time with springs' maturation. The main components are: monoterpenes, aliphatic and aromatic compounds.
Article
Full-text available
Nodal explants of Salvia officinalis were grown on Murashige and Skoog (MS) media supplemented with various concentrations of naphthyl acetic acid (NAA), indole-3-butyric acid (IBA), benzylamino purine (BAP) and kinetine to induce adventitious shoots regeneration and micropropagation. The highest rate of growth was achieved on MS media supplemented...
Book
Full-text available
Cartea reprezintă o sinteza asupra unei probleme destul de rar abordata, atât in literatura romana cat si in cea străina, aceea a markerilor biologici. Cartea este structurata pe 5 capitole si cuprinde, pe langa date din literatura de specialitate si observaţii personale ale autoarei, rezultate ale unor lucrări ştiinţifice si contracte de cercetare...
Article
Full-text available
In this paper we have studied three species of gymnosperms, spontaneous and cultivated ones - in areas adjacent to industrial platforms: Borzeşti (Bac ău county), Bicaz and Taşca (Neam ţ county), Romania. Our investigations (have focused during the period 1996 - 2005) concerning the histo-anatomical changes induced by the (gaseous and solid) atmosp...
Article
Full-text available
This study describes the microsporogenesis and the male gametophyte in Ephedra distachya L., only one species of the Ephedraceae family growing spontaneous in Romania. Ephedra distachya L. is a dioecious plant. Light microscopy (lm) is used to examine the early developmental stages of the male cones and combined light (lm) and scanning electron mic...
Article
Full-text available
Sunflower (Helianthus annuus) is annual plants native to Mexico and is valuable from economic, as well as from ornamental point of view. In this paper the edification of the primary and the secondary structure of the vegetative organs were followed during the ontogenesis. The root with primary structure is tetrarch, with four strands each of xylem...
Article
Full-text available
The authors have investigated the structure of vegetative organs of Oxalis corniculata, an adventive plant in the Romanian flora. The early passage to the secondary structure of the root, the bundle type structure of the vascular apparatus along the whole shoot and the bifacial dorsiventral structure of the leaflets lamina are emphasized. Some of t...
Article
Full-text available
In the present paper the authors have investigated the flower's structure of five species of the genus Acer: A. negundo, Acer saccharinum, A. ginalla, A. campestre, A. pseudoplatanus. Different aspects of the ontogenetic evolution, like the appearance and development of the primordia of the perianth (sepals and petals) and of the reproductive syste...
Article
Full-text available
In the present work, the authors evidence some of the particularities observed in the modified leaf of Dionaea muscipula; the upper epidermis presents a lot of multicellular digestive glands, consisting in a basal cell, located among those of the epidermis, a stalk-cell and a hemispheric multicellular massive. The ultrastructure of the glandular ce...
Article
Full-text available
The present paper shows the results of histo-anatomical research studies made on five species of parasitic plants in Romania, species within the Orobanche genus: Orobanche arenaria Borkh., O. cernua Loefl., O. major Boissen., O minor Sutton and O. purpurea Jacq. The authors investigate the structure of vegetative and reproductive organs (haustoria,...

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Project (1)
Project
A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Farming Sustainability". Deadline for manuscript submissions: 31 October 2021. Special Issue Information Dear Colleagues, Air and soil pollution is a major problem in today's society. Agroecosystems are negatively influenced by these pollutants, just like any natural ecosystem. Crop plants (especially those in intensive agriculture) may be affected by air and soil pollutants, resulting in foliar damage, a reduction in the rate of photosynthesis, a decrease in crop yield with varying degrees of contamination (in leaves, stems, roots, fruits, and seeds used by humans or in animal feed), etc.; at the same time, pollutants can affect other species living in agroecosystems, in addition to the main cultivated plant species. This Special Issue intends to collect papers investigating the effects of various air and soil pollutants (chemical and physical agents) on the structure and ultrastructure of crop plants (histological, cellular, and micromorphological modifications), and on their biochemical and physiological processes. Additionally, papers dealing with the content of heavy metals in crop plants (especially in parts of the plant intended for human or animal consumption), the influence of pollutants on secondary species in agroecosystems (such as pollinators and pests), and pollution sources for agroecosystems are welcome. Manuscript Submission Information Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website. Dr. Irina Neta Gostin Guest Editor