rss_2.0Acta Biologica Marisiensis FeedSciendo RSS Feed for Acta Biologica Marisiensis Biologica Marisiensis 's Cover Herbarium Files of Gyula Erazmus Nyárády which Got Abroad<abstract><title style='display:none'>Abstract</title><p>The herbarium of Gyula Erazmus Nyárády has been assessed to contain around 90.000 sheets. During the past thirty years, the legacy of the famed botanist still found in public institutions and private collection across Romania and Hungary has been studied and processed by Kálmán Váczy, Sándor Bartha and especially Katalin Bartók. However, nothing is known about the sheets that had ended up outside Hungary or Romania. This study proposes to fill this gap to some extent: firstly, it draws attention to sheets from Nyárády’s herbarium found in the inventory of the world’s biggest botanical gardens, museums and universities of natural science; secondly, it goes into details about the circumstances of collecting the prepared taxa, and the conclusions that can be drawn from this; it presents the reasons why some sheets got abroad; and it adds more data to reconstruct Nyárády’s social network. It also indicates that the heritage, now known to consist of around 90.000 sheets, can be completed with the sheets found abroad.</p></abstract>ARTICLE2020-06-08T00:00:00.000+00:00Mutualistic and Endophytic Microorganisms of : Description, Role and Use<abstract><title style='display:none'>Abstract</title><p><italic>Artemisia annua</italic> is an important medical plant that produces artemisinin used for its antimalarial, antibacterial and antifungal effects in modern medicine. The high demand and low artemisinin content in plants (0.01-2 %) has led to studies about alternative methods to increase yield. Biofertilizers (beneficial microbes and/or biological products that colonize roots, improve plant nutrition and growth) have been reported affecting secondary metabolism and the production of active ingredients of herbs. The purpose of this paper is to draw attention to the current status of the research on mutualistic and endophytic microorganism of <italic>A. annua</italic> that have the potential to increase the quality and quantity of the crude drugs, derived from the herb. Scientific papers in this field focus on the effects on inoculation with different microorganisms (arbuscular micorrhizal fungi, endophytic bacteria and fungi) and the isolation of endophytes from <italic>A. annua</italic>. Bioinoculants can affect biomass, artemisinin and essential oil concentration, disease resistance, nutrient status, phosphatase activity, foliar glandular trichome density, leaf chlorophyll content, guaiacol peroxidase enzyme concentration, stomatal conductance and transpiration rate, and plant growth parameters (total weight, leaf yield, height, seed yield). The endophytes isolated from the plant are potential artemisinin content and plant stress resistance enhancers.</p></abstract>ARTICLE2020-06-08T00:00:00.000+00:00Isoflavonoids − Dual Action on Estrogen Receptors<abstract><title style='display:none'>Abstract</title><p>Isoflavonoids are phytoestrogenic compounds found mainly in plants from the Fabaceae family and also in soy-based foods. Isoflavonoids exhibit (anti)estrogenic effects, acting on estrogen receptors due to the structural similarities with estrogenic hormones (17β-estradiol). The aim of our minireview is to highlight the pharmacokinetic and pharmacodynamic properties of isoflavonoids, in order to sustain the beneficial effects in different pathologies (osteoporosis associated with menopause, breast cancer, prostate cancer, protective cognitive functions) but, at the same time, to aware about the possible adverse effects on long-term administration.</p></abstract>ARTICLE2020-06-08T00:00:00.000+00:00Hemp Shives as Natural Amendments in Crops of Rapeseed () and Flax ()<abstract><title style='display:none'>Abstract</title><p>The aim of this study is to evaluate the possibility of using hemp shives as natural amendments in a phytoremediation sequence. Thus, plant growth tests were conducted for rapeseed (<italic>Brassica napus</italic>) and flax (<italic>Linum usitatissimum</italic>) in vegetation pots with sandy soil. These were seeded in a cadmium artificial contaminated environment with or without hemp shives. The efficiency of hemp shives as natural amendments was evaluated after 40 days of initiating experimental model, by evaluation of plant growth and development of plants through biometric and gravimetric measurements. Also, the concentration of assimilatory pigments was determined. In order to establish bioaccumulation capacity, degree of recovery and translocation factor, it was determined the concentration of cadmium metal ions absorbed in various parts of rapeseed and flax plants. It has been found that the development of the root system is more pronounced in the presence of hemp shives both in contamination with cadmium ions and in the absence. By determining cadmium concentrations accumulate in various parts of the plant have been shown that supplementing growth media with hemp shives, improves the bioaccumulation process of cadmium ions. According to the results, the hemp shives can be used as amendments in phytoremediation process, enhancing bioaccumulation process.</p></abstract>ARTICLE2020-06-08T00:00:00.000+00:00Ferulic Acid – A Versatile Molecule<abstract><title style='display:none'>Abstract</title><p>The review summarizes the main roles of ferulic acid (4-hydroxy-3-methoxy-cinnamic acid), a phenolic compound widespread in the vegetable world, being present in cereals (rice, wheat, oats), coffee, tomatoes, nuts or corn, but also in a range of plants used in Traditional Chinese Medicine. It plays a vital role in ensuring cell wall rigidity and also in the formation of other important organic compounds for plants. Ferulic acid has a wide variety of biological activities such as: antioxidant, anti-inflammatory, antimicrobial, antiallergic, anticancer, antithrombotic, antiviral activities, vasodilator, hepatoprotective and metal chelation actions, enzymatic activity modulation, and wound healing activity. The most important action is the antioxidant one, being studies that demonstrate that ferulic acid acts synergistically with other antioxidants. Also, the antioxidant effect of ferulic acid is enhanced by skin exposure to ultraviolet light, making it a good ingredient for sunscreen cosmetics. It is one of the most powerful natural antioxidant that has the potential to neutralize free radicals, to slow down the aging process of the skin, to accelerate skin regeneration, to heal the skin wounds and also to preserve the health and beauty of the skin.</p></abstract>ARTICLE2020-06-08T00:00:00.000+00:00The Medicinal Importance of Wild Plants from the Surroundings of Ulieş Village, Mureş County<abstract><title style='display:none'>Abstract</title><p>The village of Ulieş belongs to Râciu Commune. It is located in the south-eastern part of the Transylvanian Plain (N46°41’30” E24°23’56”) in a hilly region crossed by wide valleys. It is situated at 24 km distance from Tîrgu Mureș, in the contact area of Mădăraş Hills and Comlod Hills, on the middle stream of the Comlod River (or Lechința) and its tributaries. The paper aims were the study of the flora from the surroundings of Ulieş Village, the investigation of possible medicinal use of the encountered plants species, and the preservation of plant diversity from the area. Fieldworks were conducted in 2014-2017. A total of 415 vascular plant taxa belonging to 76 families were identified. From these, 185 species are medicinal plants with certain content of active principles. Plants containing tannins (13.51%) were in higher percentage followed by those with essential oils (12.97%), saponins (10.81%), alkaloids (8.10%), flavonoids (7.56%), coumarins (7.02%), mucilages (5.94%), iridoids (5.40%), phenolic glycosides (3.78%), anthraquinone derivatives and cardiotonic glycosides (3.24), organic acids, vitamins and provitamins (3.78%), bitter principles (2.70), bitter-aromatic principles (2.16%), etc.</p></abstract>ARTICLE2020-06-08T00:00:00.000+00:00Effects of Plant Growth Retardants on Development of Poinsettia ”Christmas Feeling” Cultivar<abstract> <title style='display:none'>Abstract</title> <p>The poinsettias were cultivated years ago as medicinal and ornamental plants, too; but in the recent time are in the light of world flower assortment surprising with new shapes and colors in the cold season. The ornamental values of these plants are given by bracts which can have the same size as foliage leaves or even larger. The tendency of floral industry consists in obtaining high quality ornamental plants with superior marketable price. In these regards, the role of plant growth retardants in regulating the growth of poinsettia is important to obtain healthy, compact bushes and extended decoration period. The aim of the paper is to evaluate the effects of plant growth retardants on poinsettia. Five treatments with different retardants were applied as drench or spray. In the experiment four replicates and a total of 144 poinsettias were used. Treatments with paclobutrazol (60 mg/l sprayed), daminozide (2500 mg/l sprayed) and chlormequat chloride (1000 mg/l sprayed), showed the best results in case of marketability.</p> </abstract>ARTICLE2021-12-30T00:00:00.000+00:00Hormones Can Influence Antibiotic Susceptibilities Even in Mono- and Co-Culture Conditions<abstract> <title style='display:none'>Abstract</title> <p><italic>Pseudomonas aeruginosa</italic> and <italic>Staphylococcus aureus</italic> are known as important nosocomial infectious agents also their co-infections are commonly seen in some patient groups. It is well known that host factors such as hormones have roles in modulation of growth, pathogenesis and susceptibilities to antimicrobials. In our study, the influences of norepinephrine (NE) and melatonin (MEL) on antibiotic susceptibilities were examined in mono and co-culture conditions. Methicilin resistant <italic>Staphylococcus aureus</italic> (MRSA) ATCC 43300 and <italic>Pseudomonas aeruginosa</italic> ATCC 27853 were investigated to determine the minimum inhibitory concentrations (MIC) and minimum bactericidal concentrations (MBC) of ciprofloxacin and gentamicin in the absence/presence of NE (0.0017 and 0.04μg/mL) and MEL (6 and 60 pg/mL) by microdilution method in mono and co-culture. It was found that hormones decreased (among 2-64 fold) MIC and MBC values of both antibiotics for MRSA. However, it was shown that hormones had no effect on MIC values of both antibiotics for <italic>P. aeruginosa.</italic> MIC and MBC values of both antibiotics for co-culture were found to be reduced compared to monoculture of MRSA; were found to be increased compared to monoculture of <italic>P. aeruginosa.</italic> Whereas, hormones decreased MIC values of both antibiotics in co-culture conditions. Our results suggest that both hormones decreased MIC values and it seems that hormones could influence antibiotic susceptibilities in a strain-dependent manner.</p> </abstract>ARTICLE2021-12-30T00:00:00.000+00:00Spontaneous Cormophytes from the Romanian Flora Known as Medicinal Plants in Other Countries?<abstract> <title style='display:none'>Abstract</title> <p>Romania's medicinal flora is an important source of raw material for pharmacological research and drug production. By consulting the pharmacological literature on authenticated scientific sources such as Google Scholar, 15 species of medicinal plants existing in the Romanian flora, but not used in the traditional Romanian medicine, were identified. In accordance with the World Health Organization's call on all countries to use traditional medicine in primary care, we set out to help complete the list of medicinal plants in Romania using information from traditional medicine in other countries.</p> </abstract>ARTICLE2021-12-30T00:00:00.000+00:00Evaluating the Performance of Palmer Drought Severity Index (PDSI) In Various Vegetation Regions of the Ethiopian Highlands<abstract> <title style='display:none'>Abstract</title> <p>This paper focuses on the environment of Ethiopia, a country highly sensitive to droughts severely affecting vegetation. Vegetation monitoring of Ethiopian Highlands requires visualization of environmental parameters to assess droughts negatively influencing agricultural sustainable management of crops. Therefore, this study presented mapping of several climate and environmental variables including Palmer Drought Severity Index (PDSI). The data were visualized and interpreted alongside the topographic data to evaluate the environmental conditions for vegetation. The datasets included WorldClim and GEBCO and Digital Chart of the World (DCW). Research has threefold objectives: i) environmental mapping; ii) technical cartographic scripting; iii) data processing. Following variables were visualized on seven new maps: 1) topography; 2) soil moisture; 3) T °C minimum; 4) T °C maximum; 5) Wind speed; 6) Precipitation; 7) Palmer Drought Severity Index (PDSI). New high-resolution thematic environmental maps are presented and the utility of GMT for mapping multi-source datasets is described. With varying degrees of soil moisture (mean value of 15.0), min T°C (−1.8°C to 24°C), max T°C (14.4°C to 40.2°C) and wind speed (0.1 to 6.1 m/s), the maps demonstrate the variability of the PDSI fields over the country area (from −11.7 to 2.3) induced by the complex sum of these variables and intensified by the topographic effects notable over the Ethiopian Highlands which can be used for vegetation analysis. The paper presents seven new maps and contributes to the environmental studies of Ethiopia.</p> </abstract>ARTICLE2021-12-30T00:00:00.000+00:00An Overview of Urban Park Development in Zhengzhou, China<abstract> <title style='display:none'>Abstract</title> <p>As essential elements of green spaces and social spaces in cities, urban parks significantly improve the quality of life and promote urban sustainability. Research on the development process of urban parks can be meaningful for coping with the current issues and future opportunities facing cities. This study takes Zhengzhou as the case aiming to outline the development process and characteristics of urban parks within the city. We adopted the empirical analysis to review the evolution processes and trends of Zhengzhou’s urban parks from the perspective of implementation approaches, spatial layout, and functions and uses. Results reveal four subsequent phases: the emergence phase (1949–1977), the growth phase (1978–1996), the acceleration phase (1997–2012), and the promotion phase (after 2012), according to the periods of urban development and the opportunities for green space development. The discussion includes development issues and strategies regarding land use approaches, user group needs, and public participation. The findings may help formulate adaptive and effective policies and planning tools for urban parks and provide a basis for further research on urban parks and Zhengzhou’s road to the ideal “Park City”.</p> </abstract>ARTICLE2021-12-30T00:00:00.000+00:00Ecosystem Services of Hospital Gardens - Based on Microclimate Analyses of Green and Blue Garden Elements<abstract> <title style='display:none'>Abstract</title> <p>The increasing urbanization process of the last decades has resulted in negative impacts and changes in the quality of the urban environment, as reflected in mortality and morbidity data (Páldy, 2018). The quality of the environment, the urban climate, the increased frequency and duration of extreme weather events, ultimately threaten human well-being. To design and build liveable cities, the quality of the urban environment must be improved, and improving micro- or local climate is an important factor in this. Increasing the proportion and quality of biologically active surfaces, i.e. the ecosystem services provided by green spaces, is one of the most effective tools for urban conditioning and enhancing human well-being. Determining the proportions of the green area, the design of vegetation, the choice of pavements and microarchitectures all determine the microclimate of an open-space. This has been confirmed by a large body of research and implemented work, but it is also important for designers to make a preliminary prediction of the impact of any intervention on the climatic conditions of the design site. These predictions will help cost-effective designing to determine which intervention will result in climate change.</p> <p>This research uses two specific examples to examine the effectiveness of each landscape designing tool and to show which designing tool produces what and how much climatic impact. For these studies, we used a climate modeling program (ENVI-MET), which runs simulations to infer the climate modifying effects of landscape planning tools.</p> <p>In the course of the research, we have shown that the local climate of hospital gardens could be significantly influenced by favorable, environmental-friend paving, a higher green cover ratio, and a well-developed and sufficiently dense tree canopy, and various water features.</p> </abstract>ARTICLE2021-07-01T00:00:00.000+00:00The Effect of Different Substrate on the Morphological Characteristics of Hungarian Cultivars<abstract> <title style='display:none'>Abstract</title> <p>The aim of this trial was to find the optimal substrate (sand, peat and 1:1 mixture of them) for germination and growing of <italic>Tagetes patula</italic> ‘Robuszta Kénsárga’, ‘Vénusz’ and ‘Tigris’, with the use of 40 seeds according to substrates and cultivars in nine groups. Germination and survival ratio, plant height, root length, flower number and –diameter were examined. Almost all seeds germinated successfully, and the highest surviving was around 80% in case of peat + sand, and the lowest (50%) when plants grown in pure sand. The latter substrate resulted the longest roots (especially in the groups of ‘Tigris’) and all cultivars (particularly ‘Vénusz’) reached the lowest height with the use of this soil. On the other hand, peat effected the shortest roots, tallest specimens, most flowers of every cultivars. In case of flower number, there were significant differences between ‘Tigris’ (with averagely 58-70 flowers) and the other two types (23-39 flowers), irrespectively of the substrates. ‘Vénusz’ developed the smallest flower heads (maximum 3.5 cm) in all cases; the other cultivars produced at least 4 cm inflorescences. The lowest plant values experienced with the use of sand and the best results on peat.</p> </abstract>ARTICLE2021-07-01T00:00:00.000+00:00Inclusion Complex of Gedunin-2-Hydroxypropyl-Β-Cyclodextrin Prepared by Kneading and Freeze-Drying Methods: Synthesis and Structural Characterization<abstract> <title style='display:none'>Abstract</title> <p>The potential application of gedunin, a pharmacologically active limonoid, is limited in medicine because it has poor aqueous solubility. This study was aimed at preparation and characterization of an inclusion complex of gedunin and 2-hydroxypropyl-β-cyclodextrin (HBD) to increase the solubility in aqueous solvents and thus enhance the possibility of pharmaceutical formulation and oral administration of gedunin. Inclusion complex of gedunin isolated from <italic>Entandrophragma angolense</italic> heartwood with 2-hydroxypropyl-β-cyclodextrin (HBD) was prepared using freeze-drying and kneading methods. The gedunin-2-hydroxypropyl-β-cyclodextrin complex (GCD) was characterized using elemental analysis, Fourier-transform infrared spectroscopy (FT-IR), <sup>1</sup>H nuclear magnetic resonance (<sup>1</sup>H-NMR) and X-ray diffraction analysis (XRD). Elemental analysis indicated that gedunin and HBD formed 1:1 stoichiometric inclusion complex. Results of FT-IR indicated that gedunin was stabilized in HBD cavity by intra-molecular hydrogen bonds and van der Waals forces. <sup>1</sup>H-NMR revealed that the entire gedunin molecule was not trapped into the core of the HBD. Nevertheless, the fraction trapped may be sufficient to enhance the apparent solubility of gedunin. XRD results showed the formation of new solid crystalline phase. The results obtained by different characterization techniques clearly indicated that both kneading and freeze-drying methods led to inclusion complex formation which may enhance oral administration of gedunin.</p> </abstract>ARTICLE2021-07-01T00:00:00.000+00:00Perspectives on Antiviral Drugs Development in the Treatment of COVID-19<abstract> <title style='display:none'>Abstract</title> <p>The main objective of this review is to highlight the urgent development of new antiviral drugs against SARS-CoV-2 in the context of the coronavirus pandemic. Antiviral medication against SARS-CoV-2 comprises only remdesivir as an approved drug. Scientists are making considerable efforts to identify other effective antivirals. Investments into the <italic>de novo</italic> design of new drugs against the SARS-CoV-2 virus are few. Molnupiravir proved to be effective against the SARS-CoV-2 virus and is very close to approval. Pfizer’s two new compounds (PF-07321332, oral administration and PF-07304814, systemic administration) are in the early stages of development. Two types of methods are preferred to discover new antivirals in a short period. Repositioning of approved drugs for antiviral effect conducted to some clinical results for favipiravir, lopinavir/ritonavir, danoprevir/ritonavir, umifenovir, hydroxychloroquine, camostat and nafamostat. Virtual screening of known molecules’ libraries indicated several compounds that were tested or are being tested in clinical trials. In conclusion, only a few innovative antiviral molecules are in various stages of development. However, the repositioning of many known compounds is being studied, including using virtual screening. The pharmaceutical industry is adapting and reinventing itself so that humanity can face a new pandemic in the future.</p> </abstract>ARTICLE2021-07-01T00:00:00.000+00:00Effect of Light-Emitting Diodes (LEDs) on Some Physical and Bioactive Compounds of ‘Iceberg’ Lettuce ( L.)<abstract> <title style='display:none'>Abstract</title> <p>The use of light-emitting diodes (LEDs) is a recent concerned application in the indoor crop system of the modern plant production. In our research, we evaluated the influence of four monochromic LED lights including 100% White (W), Yellow (Y), Red (R) and Blue (B) in comparison to solar lightening condition (GR) as a control. In this regard, some morphological characteristics and biochemical content of the common outdoor ‘Iceberg’ lettuce (<italic>Lactuca sativa</italic> L.) was measured. The results show that leaf length, leaf area and total head weight were significantly greater in the plants grown under B LED, while all the other physical parameters were significantly higher in the plants grown under GR environmental conditions. On the other hand, chlorophyll (Chl), carotenoids (Car), and nitrate content were also influenced by different light treatments. Plants grown under LED light treatment resulted in significantly higher chlorophyll content compared to the control. However, significantly greater carotenoid content was in the plants grown under GR condition. The highest total chlorophyll content was recorded under B and R LED, whereas the lowest was in the GR condition. The lowest nitrate content in the blade and petiole was recorded in the plants grown under Y LED, while the highest nitrate content was recorded in the GR. Based on our result, it is possible to grow and improve some quality parameters of common outdoor ‘iceberg’ lettuce under LED where the solar light is limited or unavailable. Thus, plants performed better under GR light conditions than monochromic LEDs; however, some LED lights could improve some quality parameters and biochemical contents in the ‘iceberg’ lettuce variety.</p> </abstract>ARTICLE2021-07-01T00:00:00.000+00:00Investigation of HRPF2 Gene Deletion in in Northwestern Nigeria<abstract> <title style='display:none'>Abstract</title> <p>Malaria Rapid Diagnostic Tests (RDTs) plays an important role in malaria management and control. The Pf HRP2 based RDT kit is the most widely used RDT for malaria diagnosis in Nigeria but is affected by the deletion of HRP2 gene in Plasmodium falciparum parasites. Therefore, identifying the prevalence and distribution of <italic>Plasmodium falciparum</italic> parasites with deleted Pf HRP2 is important for malaria control. Pf HRP2 gene deletion was assessed in this study by first carrying out Giemsa stained thick blood film microscopy and Pf HRP2 RDT strip test. The samples were further analyzed for molecular examination by PCR assay for multiple single–copy genes (Pf Cox3, Pf HRP2, Pf HRP3 and Pf Beta tubulin). This study found the existence of eight (8) <italic>Plasmodium falciparum</italic> isolates lacking the HRP2 gene in the samples analyzed, this necessitates the need to develop a unique RDT Kit targeting other housekeeping genes unique for <italic>Plasmodium falciparum</italic> with far greater sensitivity than the current ones as to reduce the chances of false negative RDT result as well as developing unique RDT Kits targeting both PfHRP2 and PfHRP3 genes concomitantly in order to reduce the chances of having a false positive RDT results.</p> </abstract>ARTICLE2021-07-01T00:00:00.000+00:00Homage to George E. Palade Cell Protein Secretion in Vascular Biology: Overview and Updates<abstract> <title style='display:none'>Abstract</title> <p>This short overview and updates expresses our brain-and-heart homage to George Emil Palade, “the most influential cell biologist ever”. In his 1971 paper Palade wrote for Albert Claude, the founder of biological electron microscopic method: “Seldom has a field owed so much to a single man”. Herein, we articulate the same words for George Palade, the Teacher of many generations in cell biology research and education. Accordingly, we focus on two paradigm shifts in the cell biology, namely (i) the transition from light to transmission electron microscopy in studying cell protein secretion made by George Palade, and (ii) the transition from contractile to secretory phenotype of vascular smooth muscle cells made by Maria Daria Haust followed and developed by our research group. Altogether, we argue that one of the present challenges in vascular biology is to cultivate secreto-centric thinking and thus further focusing on how we could make the vascular muscle’s secretory pathways work for the benefit of human’s cardiovascular health.</p> </abstract>ARTICLE2021-07-01T00:00:00.000+00:00Micro-Anatomical Characterization of African Native Monotypic Genera - (DC.) Guill and Linn (Combretaceae)<abstract> <title style='display:none'>Abstract</title> <p>This study was designed to explore the micro-anatomical characteristics of leaf and petiole of two unstudied West African native monotypic genera - <italic>Anogeissus</italic> and <italic>Qusqualis</italic> in Combretaceae with a view to characterizing the taxa, providing useful research-based information for identification. The samples were prepared following standard procedures. The light microscopic study of the transverse sections of the leaves in <italic>A. leiocarpus</italic> revealed a thick upper and lower cuticle while the cuticle on both leaf surfaces in <italic>Q. indica</italic> remain thin. The midrib vascular bundle of the leaf in <italic>Q. indica</italic> is characterized by arc-shape and starch grains were observed in the parenchyma cells of the ground tissue. The uniseriate rows of lamina epidermis were oval, squared, rectangular or polygonal in <italic>Q. indica</italic> while it was rectangular or slightly oval in <italic>A. leiocarpus</italic>. Vascular bundle in the leaves and petioles of both taxa were collateral. Simple, slender and short unicellular non-glandular trichomes were also observed in the leaf and petiole micro-anatomy of both taxa. It was concluded that the micro-anatomical features of the leaves and petioles are important parameters of characterization, used in the identification of the studied taxa.</p> </abstract>ARTICLE2021-07-01T00:00:00.000+00:00 Sp. Strain MY 83295F: A Potential -DDT-Degrading Bacterium Isolated from Pesticide Contaminated Soil<abstract> <title style='display:none'>Abstract</title> <p>Although DDT has been on the ban list by the Stockholm Convention for its environmental degradation, still a wave of emerging shreds of evidence has proved its circulation in developing countries. The intensity of environmental degradation and human health problems posed by residual DDT and its metabolites become of serious ecological concern, warranting a search for novel strains with a capacity to biodegrade these environmental contaminants. A new strain of the genus <italic>Staphylococcus</italic> was isolated from pesticide-contaminated soil. The 16S rRNA and phylogenetic analyses were used to identify the isolate and the 16S rRNA partial gene sequence was deposited in the NCBI GenBank as <italic>Staphylococcus</italic> sp. strain MY 83295F. The isolate was capable of growing in up to 60 mg L<sup>−1</sup> of <italic>p,p’</italic>-DDT as the sole carbon source at an optimum pH of 6.5 and optimum temperature of 30°C within 120 h. Zn<sup>2+</sup> has demonstrated a stimulatory effect on the growth of the strain in <italic>p,p’</italic>-DDT containing medium. However, Fe, Cu, Pb, Hg, Ag, and Cr ions showed inhibitory effects on the strain’s growth in the medium. The strain could be a handy tool for the bio-cleansing of residual <italic>p,p’</italic>-DDT in the contaminated environment.</p> </abstract>ARTICLE2021-01-05T00:00:00.000+00:00en-us-1