27 results on '"Mamarakhimov, Oybek"'
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2. Phyto-ecological studies and distribution patterns of subfamily Polygonoideae in relation to edaphic factors across diverse ecological zones
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Gillani, Syed Waseem, Ahmad, Mushtaq, Ali, M. Ajmal, Zafar, Muhammad, Alkahtani, Jawaher, Makhkamov, Trobjon, Yuldashev, Akramjon, Mamarakhimov, Oybek, Khaydarov, Khislat, Botirova, Laziza, Kilic, Omer, Shaheen, Hamayun, Idrees, Muhammad, Sultana, Shazia, Manzoor, Muhammad, and Majeed, Salman
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- 2024
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3. Foliar epidermal and trichome micromorphological diversity among poisonous plants and their taxonomic significance
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Abid Aqsa, Ahmad Mushtaq, Zafar Muhammad, Zafar Sadia, Ramadan Mohamed Fawzy, Althobaiti Ashwaq T., Sultana Shazia, Kilic Omer, Makhkamov Trobjon, Yuldashev Akramjon, Mamarakhimov Oybek, Khaydarov Khislat, Mammadova Afat O., Komilov Komiljon, and Majeed Salman
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biodiversity ,foliar epidermis ,microanatomy ,stellate trichomes ,taxonomy ,Plant culture ,SB1-1110 - Abstract
Scanning microscopic imaging has become a valuable research tool in micromorphology with improved techniques playing an important role in analysing the ultrastructure of leaf specimens. The foliar epidermal anatomy of 25 selected poisonous plants with special emphasis on stomata and trichomes was reported using microscopic techniques, for instance, light micrographs (LMs) and scanning micrographs (SEMs). This study aimed to investigate micromorphologies of studied species that are helpful for the identification of poisonous plants. Plants were collected, pressed, dried, identified and then analysed for microscopic study. For making microscopic slides, 1 or 2 leaves were taken in a test tube and dipped in 30% nitric acid and 70% lactic acid for few minutes, and then placed on petri plates for separating the epidermis. Numerous quantitative and qualitative foliar anatomical features of adaxial and abaxial surfaces, including epidermal cell shapes, stomata size, subsidiary cell size, the pattern of the anticlinal wall, the morphology of the stomatal complex and trichome diversity, were examined. A small number of the considered species had anomocytic and anisocytic stomata; a few species had paracytic stomata, for instance, Ricinus communis, Euphorbia royleana, Buxus pilosula and Sorghum halepense; and only Ipomoea carnea had cyclocytic stomata in the studied taxa. The epidermal cells of the analysed species were irregular, while some exhibited polygonal, wavy, tetragonal and elongated cell morphologies. Overall, this study emphasises the significance of foliar micromorphology analysis as a valuable resource for identifying potentially poisonous plants and demonstrates its contribution to maintaining public welfare, thereby benefitting public health and safety.
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- 2023
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4. Exploring intraspecific pollen morphology variation in Apocynaceae: A roadmap for horticultural innovation
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Khan Muhammad Rizwan, Zafar Muhammad, Ahmad Mushtaq, Al-Ghamdi Abdullah Ahmed, Elshikh Mohamed Soliman, Makhkamov Trobjon, Mamarakhimov Oybek, Yuldashev Akramjon, Botirova Laziza, Mamadiyarov Dilshod, Sultana Shazia, Majeed Salman, Raza Jamil, and Kumar Prem
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cultivars ,exine ,morpho-palynology ,pollinia ,sem ,Plant culture ,SB1-1110 - Abstract
This study aimed to examine the pollen and pollinia morpho-structure of 18 horticultural Apocynaceous species. Advanced light and scanning electron microscopy (LM and SEM) were used to elaborate on and examine the systematic importance of pollen and pollinia micromorphology. Pollen grains were first acetolysed, which was followed by visualisation of their sculpturing features. The quantified data were subjected to statistical tools to elucidate dendrogram clustering and principal component analysis to reveal pollen/pollinia morphotypes. The size of pollen is variable, ranging from 113.45 μm in Cascabela thevetia to 23.4 μm in Alstonia scholaris. The study revealed tetrad, tetraporate, and tricolporate grains. Sculpturing (exine ornamentation) varies from reticulate perforate to reticulate. Pollinum shape was observed to be narrow oblong, obovate, orbicular, and reniform. Reticulate-psilate sculptural features were prominent among pollinia surfaces. Based on examination, it was ascertained that the minimum exine thickness in Periploca aphylla was 4.9 μm, whereas the corresponding number in Cryptolepis dubia was 1.35 μm. Taxonomic identification keys were constructed separately based on pollen/pollinia characters to identify the Apocynaceous taxa. In the presented study, seven pollen shapes were observed: from oblate to per prolate. The findings confirm that morphopollinic traits differ amongst genera of Apocynaceous species. However, these features can be used to distinguish the Apocynaceous taxa. The results show that structural characteristics of pollen and pollinia can help accurately identify Apocynaceous species.
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- 2023
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5. Morphogenesis and Seasonal Developmental Rhythm Under the Conditions of Introduction of Curcuma Longa L.
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Makhkamov, Trobjon, Sotiboldiyeva, Dilnoza, Mamarakhimov, Oybek, Yuldashov, Yakubjon, Botirova, Laziza, Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Beskopylny, Alexey, editor, Shamtsyan, Mark, editor, and Artiukh, Viktor, editor
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- 2023
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6. Micrometer insights into Nepeta genus: Pollen micromorphology unveiled
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Jabeen, Shaista, Zafar, Muhammad, Ahmad, Mushtaq, Ali, M. Ajmal, Elshikh, Mohamed S., Makhkamov, Trobjon, Mamarakhimov, Oybek, Yuldashev, Akramjon, Khaydarov, Khislat, Gafforov, Yusufjon, Baysunov, Babir, Mammadova, Afat O., Botirova, Laziza, Sultana, Shazia, Majeed, Salman, Rozina, Ahmad, Shabir, Abid, Aqsa, and Rahmatov, Abdurashid
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- 2024
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7. Petiole micromorphology in Brassicaceous taxa and its potential for accurate taxonomic identification
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Noor, Wajia, Zafar, Muhammad, Ahmad, Mushtaq, Althobaiti, Ashwaq T., Ramadan, Mohamed Fawzy, Makhkamov, Trobjon, Gafforov, Yusufjon, Yuldashev, Akramjon, Mamarakhimov, Oybek, Kilic, Omer, Eid, Heba F., Şahin, Talip, Sultana, Shazia, Sadia, Bibi, Usma, Anwer, and Khan, Amjad
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- 2023
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8. Prospects of Bioenergy Development in Future
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Ameen, Maria, primary, Zafar, Muhammad, additional, Ahmad, Mushtaq, additional, Sultana, Shazia, additional, Makhkamov, Trobjon, additional, Yuldashev, Akramjon, additional, Mamarakhimov, Oybek, additional, Nasirov, Muhtor, additional, Kilic, Omer, additional, Ozdemir, Fethi A., additional, and Gafforov, Yusufjon, additional
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- 2023
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9. Morphogenesis and Seasonal Developmental Rhythm Under the Conditions of Introduction of Curcuma Longa L.
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Makhkamov, Trobjon, primary, Sotiboldiyeva, Dilnoza, additional, Mamarakhimov, Oybek, additional, Yuldashov, Yakubjon, additional, and Botirova, Laziza, additional
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- 2023
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10. Identification of the major insect pests and their biological characteristics in apple orchards (Uzbekistan)
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Boltabaev Adamboy, Mamarakhimov Oybek, Tangirov Nizom, Tursunova Shoxista, Turdalieva Khurmatoy, and Alimov Atabek
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Microbiology ,QR1-502 ,Physiology ,QP1-981 ,Zoology ,QL1-991 - Abstract
The study presents biological characteristics of the major apple pests in Uzbekistan. For evaluating the key insects, field observation has been conducted. The in-situ results have identified six major apple pests in three selected research areas of the province. Thus, in this study, the biological behavior and potential harm of the determined pests on apple trees are provided. This field-based investigation helps to establish an integrated method to fight against those harmful pests and their devastating influence.
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- 2024
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11. Bioecological features and significance of the genus Bee-Eater-Merops in Uzbekistan
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Shodieva Fotima, Kholboev Fakhriddin, Mamarakhimov Oybek, Shausmanova Roza, and Solieva Dilafruz
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Microbiology ,QR1-502 ,Physiology ,QP1-981 ,Zoology ,QL1-991 - Abstract
The article presents the results of the research conducted in Uzbekistan in 2020-2023 on the bioecological characteristics and importance of European Bee-eater - Merops apiaster and Blue-cheeked Bee-eater - Merops persicus. The purpose of this study is to determine and assess the distribution, number and dynamics of M. apiaster and M. persicus in Uzbekistan, factors controlling their reproduction, nutrition, importance in nature and in bee farms, to experiment with effective methods to prevent biodamage caused by bee-eaters to bee farms and to protect them. As a result, recommendations are being developed to protect these species and prevent their bio-damaging activity. Zoological, ecological, questionnaire, statistical and comparative analysis methods were used in the research. The scientific novelty of the research is as follows: distribution characteristics of Merops species in Uzbekistan, their number and dynamics in biotopes, and abiotic and biotic factors controlling them were determined; the reproductive cycle of woodpeckers, their nesting places, the structure of their nests, the passage of reproduction stages, the efficiency of reproduction and the environmental factors affecting it were determined; changes in the nutritional composition and trophic relations of the species were determined in accordance with the reproductive and post-reproductive cycles; it has been proven that bee- eaters increase in stomach mass and accumulation of fat in the stomach and internal organs are the results of hyperphagia and lipogenesis events that occur in preparation for autumn migration; the importance of M. apiaster and M. persicus in nature and in bee farms was evaluated and their participation in various biocenotic relationships was revealed; the bioacoustic repellent “Merops – distress signal” was developed and its effectiveness in controlling the behavior of bee-eaters was proven by testing; appropriate recommendations for reducing the participation of Merops in biodamage in bee farms and their protection were developed.
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- 2024
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12. Analysis of Species of Astragalus L. types distribution in flora sands
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Matvafayeva Marxamat, Atabek Alimov, Mamarakhimov Oybek Muratovich, Rustamova Rano Parpievna, and Ismailova Arofat Mirzakhidovna
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Environmental sciences ,GE1-350 - Abstract
The article presents the analysis of astragalus L. species distributed in the flora of the sands of Uzbekistan. According to the analysis pf herbarium specimens stored in the unique scientific facility of the National Herbarium of Uzbekistan (NHU), scientific resources, and the results of field-based research, it has been found for the first time that 33 varieties of psammophilous species grow in the sandy areas.
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- 2024
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13. Exploring biodiversity and ethnobotanical significance of Solanum species in Uzbekistan: unveiling the cultural wealth and ethnopharmacological uses
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Gafforov, Yusufjon, primary, Rašeta, Milena, additional, Zafar, Muhammad, additional, Makhkamov, Trobjon, additional, Yarasheva, Manzura, additional, Chen, Jia-Jia, additional, Zhumagul, Moldir, additional, Wang, Mengcen, additional, Ghosh, Soumya, additional, Abbasi, Arshad Mehmood, additional, Yuldashev, Akramjon, additional, Mamarakhimov, Oybek, additional, Alosaimi, Areej Ahmed, additional, Berdieva, Dilfuza, additional, and Rapior, Sylvie, additional
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- 2024
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14. Cleaner Biofuel Production via Process Parametric Optimization of Nonedible Feedstock in a Membrane Reactor Using a Titania-Based Heterogeneous Nanocatalyst: An Aid to Sustainable Energy Development
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Ameen, Maria, primary, Zafar, Muhammad, additional, Ahmad, Mushtaq, additional, Munir, Mamoona, additional, Abid, Islem, additional, Mustafa, Abd El-Zaher M. A., additional, Athar, Mohammad, additional, Makhkamov, Trobjon, additional, Mamarakhimov, Oybek, additional, Yuldashev, Akramjon, additional, Khaydarov, Khislat, additional, Mammadova, Afat O., additional, Botirova, Laziza, additional, and Makkamov, Zokirjon, additional
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- 2023
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15. Micromorphological Sculptural Diversity in Foliar Epidermis and Trichomes Features among Invasive Species
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Manzoor, Ribaha, primary, Zafar, Muhammad, additional, Yaqoob, Tayyaba, additional, Ahmad, Mushtaq, additional, Ramadan, Mohamed Fawzy, additional, Althobaiti, Ashwaq T, additional, Demirpolat, Azize, additional, Çobanoğlu, Duygu Nur, additional, Sultana, Shazia, additional, Makhkamov, Trobjon, additional, Mamarakhimov, Oybek, additional, Yuldashev, Akramjon, additional, Khakimova, Dilabza, additional, Nizomova, Maxsuda, additional, Ochilov, Ulugbek, additional, and Majeed, Salman, additional
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- 2023
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16. Assessing the Bioenergy Potential of Novel Non-Edible Biomass Resources via Ultrastructural Analysis of Seed Sculpturing Using Microscopic Imaging Visualization
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Ameen, Maria, primary, Zafar, Muhammad, additional, Ahmad, Mushtaq, additional, Fawzy Ramadan, Mohamed, additional, Eid, Heba F., additional, Makhkamov, Trobjon, additional, Yuldashev, Akramjon, additional, Mamarakhimov, Oybek, additional, Nizomova, Maxsuda, additional, Isaifan, Rima J., additional, Jabeen, Shaista, additional, and Majeed, Salman, additional
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- 2023
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17. Sustainable Production of Biodiesel from Novel Non-Edible Oil Seeds (Descurainia sophia L.) via Green Nano CeO2 Catalyst
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Akhtar, Maryam Tanveer, primary, Ahmad, Mushtaq, additional, Ramadan, Mohamed Fawzy, additional, Makhkamov, Trobjon, additional, Yuldashev, Akramjon, additional, Mamarakhimov, Oybek, additional, Munir, Mamoona, additional, Asma, Maliha, additional, Zafar, Muhammad, additional, and Majeed, Salman, additional
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- 2023
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18. pH results and coordination of spring waters in Gallaorol district, Uzbekistan
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Tashpulatova, Sabokhat A, primary, Mamarakhimov, Oybek M, additional, and Kamiljanova, Shakhrizoda A, additional
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- 2022
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19. NATURE MUSEUMS (ECOMUSEUM), NATURE PARKS (BOTANY, ZOO) AND PEOPLE'S ACTIVITY, THEIR OPINION
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Tashpulatova Sabokhat Akbarovna, Mamarakhimov Oybek Muratovich, and Kamiljanova Shakhrizoda Akbarovna
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Museums of nature, Ecological culture, Zoo, State Museum of Nature of Uzbekistan, Tashkent Botanical Garden, Tourism - Abstract
The research was carried out in the form of a questionnaire, for five days, using the "Telegram" messenger. According to the results of the survey, 633 people read the questionnaires, but more than 216 people (34 %) actively answered the questions. 66 % (417 people) read the questions but did not want to answer not actively. 
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- 2022
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20. THROWING WASTE FROM A CAR IS AS SIGN OF UNCULTURE (PUBLIC OPINION)
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Tashpulatova Sabokhat Akbarovna, Mamarakhimov Oybek Muratovich, and Makhkamova Malika Akhror Qizi
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Pollution of environment, household waste, soil pollution, automobile, ecological culture - Abstract
The research was carried out in the form of a questionnaire, for five days, using the "Telegram" messenger. According to the results of the survey, 589 people read the questionnaires, but more than 191 people (32 %) actively answered the questions. 68 % (398 people) read the questions but did not be an active. 
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- 2022
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21. Novel Copper Oxide Phyto-Nanocatalyst Utilized for the Synthesis of Sustainable Biodiesel from Citrullus colocynthis Seed Oil.
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Aziz, Aqsa, Ahmad, Mushtaq, Zafar, Muhammad, Gaafar, Abdel-Rhman Z., Hodhod, Mohamed S., Sultana, Shazia, Athar, Mohammad, Ozdemir, Fethi Ahmet, Makhkamov, Trobjon, Yuldashev, Akramjon, Mamarakhimov, Oybek, Nizomova, Maxsuda, Majeed, Salman, and Chaudhay, Bisha
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WATERMELONS ,OILSEEDS ,ALTERNATIVE fuels ,COPPER oxide ,FOSSIL fuels ,SUSTAINABLE chemistry - Abstract
The green chemistry method for nanocatalyst synthesis along with environmentally feasible non-edible sources are promising alternatives to fossil fuels. The current study focuses on the synthesis of copper oxide phyto-nanocatalyst and the identification of a new renewable feedstock, Citrullus colocynthis, to reduce environmental pollution. The highest biodiesel yield (95%) was obtained under optimum conditions of a 1:8 oil-to-methanol ratio and reaction temperature of 85 °C for 120 min with a 0.365 wt% catalyst concentration. The phyto-nanocatalyst was synthesized using seed oil cake after extracting oil with the salt of copper (copper oxide). The catalyst was then subjected to various analyses, namely, EDX, FT-IR, SEM, and XRD. The catalyst was proved to be efficient and effective after being reused five times and still there was a very small difference in biodiesel yield. All the analyses also show sustainable and stable results. Thus, copper oxide phyto-nanocatalyst with non-edible Citrullus colocynthis proved to be highly effective, sustainable, and a better alternative source to the future biodiesel industry. [ABSTRACT FROM AUTHOR]
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- 2023
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22. RESULTS OF CHEMICAL ANALYSIS OF «SPRING NO 6» IN GALLAOROL DISTRICT
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Mamarakhimov Oybek Muratovich, Tashpulatova Sabokhat Akbarovna, Khodiyeva Aziza Dilshod qizi
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The article contains the results of chemical analysis of the water of the spring (Spring No. 6) located in Gallaorol district of Jizzakh region. The spring water sample was examined by the analytical laboratory method, and the results of physical and chemical analysis of water, in particular, pH, SiO2, dry residue, Ca2+, Mg2+, Fe, CO32-, HCO3-, SO42-, Cl, NO2, NO3, total hardness, K, indicators such as Na, Mn, Pb, Cu, Cr, Zn, Ni, Co, As, CNS, Al were determined. And coordinates of the location of Spring No. 6 were obtained. The results of the chemical analysis were compared with the state standards of Uzbekistan, and the spring water was found to be chemically suitable for domestic and drinking purposes. 
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- 2022
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23. Lophiostoma khanzada-kirgizbaeva Aluth., Gafforov & K. D. Hyde 2022, sp. nov
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Aluthmuhandiram, Janith V. S., Wanasinghe, Dhanushka N., Chethana, K. W. Thilini, Gafforov, Yusufjon, Saichana, Natsaran, Li, Xing Hong, Yan, Jiye, and Mamarakhimov, Oybek M.
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Lophiostoma khanzada-Kirgizbaeva ,Ascomycota ,Dothideomycetes ,Lophiostomataceae ,Fungi ,Lophiostoma ,Biodiversity ,Pleosporales ,Taxonomy - Abstract
Lophiostoma khanzada-kirgizbaeva Aluth., Gafforov & K.D. Hyde, sp. nov. Index Fungorum number: IF 558817; Facesoffungi number: FoF 10528, FIGURE 2. Etymology: khanzada-kirgizbaeva (Lat.) in honour of Uzbekistan mycologist Dr. Khanzada Kirgizbaeva (1937-2007) for her contribution in studying aquatic microfungi of Uzbekistan. Saprobic on unknown hosts in terrestrial habitats. Sexual morph: Ascomata 170–450 μm high × 150–400 μm diam. (x̅ = 226 × 259 μm, n = 10), scattered to gregarious, immersed, dark brown to black, surrounded by a small blackened pseudoclypeus, globose to subglobose, ostiolate. Ostioles 120–140 μm high × 20–30 μm wide (x̅ = 130 × 25 μm, n = 5), slit-like, central, with a reduced crest and a pore-like opening. Peridium 35–80 μm wide (x̅ = 54 μm, n = 20), wider at the apex, and thinner at the base, composed of two strata, outer stratum comprising several layers of dark brown to black, somewhat flattened cells of textura angularis, fusing and indistinguishable from the host tissues, inner stratum comprising several layers with lightly pigmented cells of textura angularis. Hamathecium comprising 1–1.5 μm wide, septate, branched, pseudoparaphyses, situated between and above the asci. Asci 80–150 × 10–18 μm (x̅ = 113 × 15 μm, n = 30), 8-spored, bitunicate, fissitunicate, cylindric-clavate, with a long pedicel, rounded at the apex. Ascospores 15–25 × 6–8μm (x̅ = 22 × 7 μm, n = 50), uniseriate to bi-seriate, overlapping, initially hyaline and turning dark brown at maturity, fusiform with narrow rounded ends at immature state and turns ellipsoidal at maturity, 1–3 septate, constricted at the septum, widest at the region above or below the central septum, smooth-walled, guttulate, with mucilaginous sheath present in immature ascospores. Asexual morph: Undetermined. Material examined: Uzbekistan, Jizzakh Region, Zaamin District, Zaamin National Nature Park, Supa Plateau in the Turkestan ridge of Pamir-Alay Mountains, on a dead branch of Rosa sp., 15 July 2019, Yusufjon Gafforov, YGZ75-1_1 (TASM 6158, holotype); ibid. on a dead stem of Rosa sp., YG-Z75-1_2 (TASM 6164, paratype). Notes: Lophiostoma khanzada-kirgizbaeva (TASM 6158) is phylogenetically closest to L. paramacrostomum (MFLUCC 11-0463). Our strain L. khanzada-kirgizbaeva (TASM 6158) composed of globose to subglobose ascomata while L. paramacrostomum (MFLUCC 11-0463) composed of subglobose to conical ascomata (Thambugala et al. 2015). Lophiostoma khanzada-kirgizbaeva (TASM 6158) consists of 1–3 septate, fusiform, hyaline ascospores, which turn ellipsoidal and dark brown at maturity. Lophiostoma paramacrostomum (MFLUCC 11-0463) is characterized by 1-septate, hyaline, fusiform ascospores with narrow, acute ends. The phylogenetic analysis of combined SSU, ITS, LSU, tef 1-α, rpb 2 sequence data of Lophiostomataceae species revealed our strain Lophiostoma khanzada-kirgizbaeva (TASM 6158) within the Lophiostoma clade with good statistical support (97% ML-BS/0.91 BI-PP, FIGURE 1). Hence, confirming Lophiostoma khanzada-kirgizbaeva (TASM 6158) as a new species.
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- 2022
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24. Paucispora xishanensis Aluth., Wanas. & K. D. Hyde 2022, sp. nov
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Aluthmuhandiram, Janith V. S., Wanasinghe, Dhanushka N., Chethana, K. W. Thilini, Gafforov, Yusufjon, Saichana, Natsaran, Li, Xing Hong, Yan, Jiye, and Mamarakhimov, Oybek M.
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Ascomycota ,Paucispora ,Dothideomycetes ,Lophiostomataceae ,Fungi ,Paucispora xishanensis ,Biodiversity ,Pleosporales ,Taxonomy - Abstract
Paucispora xishanensis Aluth., Wanas. & K.D. Hyde, sp. nov. Index Fungorum number: IF 558818; Facesoffungi number: FoF 10529; FIGURE 3. Etymology: The epithet reflects the district where the specimen was collected. Saprobic on dead twigs of an unknown host. Sexual morph: Ascomata 200–340 μm high, 370–400 μm diam. (x̅ = 291 × 379 μm, n = 10), scattered to gregarious, immersed to semi-immersed, papilla erumpent through host surface, conical, flattened at the base, uni-loculate, coriaceous, black, ostiolate. Ostioles 120–140 μm high × 40–50 μm wide (x̅ = 131 × 44 μm, n = 5), slit-like, central, with a crest-like apex, broadly papillate, with a pore-like opening, filled with hyaline periphyses. Peridium 20–60 μm wide (x̅ = 39 μm, n = 20) at sides, wider at the apex, and thinner at the base, multi-layered, composed of 10–12 layers, outer layers composed of dark brown to black cells of textura angularis, indistinguishable from the host tissues, inner layer composed of hyaline cells of textura angularis. Hamathecium 1.2–1.7 µm (x̅ = 1.4 µm, n = 30) wide, composed with numerous dense, filiform, transversely septate, branched, anastomosing, cellular pseudoparaphyses situated between and above the asci, embedded in a gelatinous matrix. Asci 60–90 × 9–13 μm (x̅ = 77×11 μm, n = 30), 2–4-spored, bitunicate, fissitunicate, cylindric-clavate, apically rounded, with an ocular chamber. Ascospores 16–22 × 7–9 μm (x̅ = 20 × 8 μm, n = 50), uniseriate, partially overlapping, initially hyaline and turn dark brown at maturity, except pale end cells, ellipsoidal, straight, 1–3 septate, constricted at the central septum, widest at the region above or below the central septum, smooth-walled, guttulate, lacking a mucilaginous sheath. Asexual morph: Undetermined. Material examined: Xishan, Kunming, Yunnan, China, Woody litter of unknown host plant, 19 July 2019. DN Wanasinghe, DW1344-4_1 (HKAS 115905, holotype); ibid. DW1344-4_2 (HKAS 115906, paratype) Notes: In our phylogenetic analysis, Paucispora xishanensis (HKAS 115905) groups basal to P. versicolor (MAFF 244508). Paucispora xishanensis (HKAS 115905) is morphologically similar to P. versicolor (MAFF 244508) and P. kunmingense (MFLU 17-0558). However, P. xishanensis (HKAS 115905) has depressed conical-shaped ascomata while P. versicolor (MAFF 244508) consists of globose to subglobose ascomata (Hirayama et al. 2014; Thambugala et al. 2015) and P. kunmingense (MFLU 17-0558) consists of globose to depressed globose ascomata (Hyde et al. 2017). Paucispora xishanensis (HKAS 115905) and P. versicolor (MAFF 244508) both consist of 2-4 spored asci (Hirayama et al. 2014; Thambugala et al. 2015), while P. kunmingense (MFLU 17-0558) consists of 4-spored asci (Hyde et al. 2017). Paucispora xishanensis (HKAS 115905) consists of initially hyaline ascospores, which turn dark brown at maturity, while P. versicolor (MAFF 244508) consists of brown to reddish-brown ascospores (Hirayama et al. 2014; Thambugala et al. 2015) and P. kunmingense (MFLU 17-0558) consists of hyaline ascospores (Hyde et al. 2017). In addition, the multilocus phylogenetic analyses also confirmed the phylogenetic placement of Paucispora xishanensis isolates HKAS 115905 and HKAS 115906 within the Paucispora clade as a phylogenetically distinct species with good statistical support (100 % ML-BS/1.00 BI-PP) (FIGURE 1)., Published as part of Aluthmuhandiram, Janith V. S., Wanasinghe, Dhanushka N., Chethana, K. W. Thilini, Gafforov, Yusufjon, Saichana, Natsaran, Li, Xing Hong, Yan, Jiye & Mamarakhimov, Oybek M., 2022, Lophiostomataceae (Dothideomycetes): Introducing Lophiostoma khanzadakirgizbaeva sp. nov. and Paucispora xishanensis sp. nov., pp. 247-262 in Phytotaxa 559 (3) on page 255, DOI: 10.11646/phytotaxa.559.3.3, http://zenodo.org/record/7021719, {"references":["Hirayama, K., Hashimoto, A. & Tanaka, K. (2014) A new species, Lophiostoma versicolor, from Japan (Pleosporales, Dothideomycetes). Mycosphere 5: 411 - 417. https: // doi. org / 10.5943 / mycosphere / 5 / 3 / 3","Thambugala, K. M., Hyde, K. D., Tanaka, K., Tian, Q., Wanasinghe, D. N., Ariyawansa, H. A., Jayasiri, S. C., Boonmee, S., Camporesi, E., Hashimoto, A., Hirayama, K., Schumacher, R. K., Promputtha, I. & Liu, Z. Y. (2015) Towards a natural classification and backbone tree for Lophiostomataceae, Floricolaceae, and Amorosiaceae fam. nov. Fungal Diversity 74: 199 - 266. https: // doi. org / 10.1007 / s 13225 - 015 - 0348 - 3","Hyde, K. D., Norphanphoun, C., Abreu, V. P., Bazzicalupo, A., Thilini Chethana, K. W., Clericuzio, M., Dayarathne, M. C., Dissanayake, A. J., Ekanayaka, A. H., He, M. - Q., Hongsanan, S., Huang, S. - K., Jayasiri, S. C., Jayawardena, R. S., Karunarathna, A., Konta, S., Kusan, I., Lee, H., Li, J., Lin, C. - G., Liu, N. - G., Lu, Y. - Z., Luo, Z. - L., Manawasinghe, I. S., Mapook, A., Perera, R. H., Phookamsak, R., Phukhamsakda, C., Siedlecki, I., Soares, A. M., Tennakoon, D. S., Tian, Q., Tibpromma, S., Wanasinghe, D. N., Xiao, Y. - P., Yang, J., Zeng, X. - Y., Abdel-Aziz, F. A., Li, W. - J., Senanayake, I. C., Shang, Q. - J., Daranagama, D. A., de Silva, N. I., Thambugala, K. M., Abdel-Wahab, M. A., Bahkali, A. H., Berbee, M. L., Boonmee, S., Bhat, D. J., Bulgakov, T. S., Buyck, B., Camporesi, E., CastanedaRuiz, R. F., Chomnunti, P., Doilom, M., Dovana, F., Gibertoni, T. B., Jadan, M., Jeewon, R., Jones, E. B. G., Kang, J. - C., Karunarathna, S. C., Lim, Y. W., Liu, J. - K., Liu, Z. - Y., Plautz, H. L., Lumyong, S., Maharachchikumbura, S. S. N., Matocec, N., McKenzie, E. H. C., Mesic, A., Miller, D., Pawlowska, J., Pereira, O. L., Promputtha, I., Romero, A. I., Ryvarden, L., Su, H. - Y., Suetrong, S., Tkalcec, Z., Vizzini, A., Wen, T. - C., Wisitrassameewong, K., Wrzosek, M., Xu, J. - C., Zhao, Q., Zhao, R. - L. & Mortimer, P. E. (2017) Fungal diversity notes 603 - 708: taxonomic and phylogenetic notes on genera and species. Fungal Diversity 87: 1 - 235. https: // doi. org / 10.1007 / s 13225 - 017 - 0391 - 3"]}
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- 2022
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25. Lophiostomataceae (Dothideomycetes): Introducing Lophiostoma khanzada-kirgizbaeva sp. nov. and Paucispora xishanensis sp. nov.
- Author
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ALUTHMUHANDIRAM, JANITH V.S., primary, WANASINGHE, DHANUSHKA N., additional, THILINI CHETHANA, K.W., additional, GAFFOROV, YUSUFJON, additional, SAICHANA, NATSARAN, additional, LI, XING HONG, additional, YAN, JIYE, additional, and MAMARAKHIMOV, OYBEK M., additional
- Published
- 2022
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26. HYDROBIOLOGICAL, ALGOLOGICAL ANALYSIS AND ECOLOGICAL FEATURES OF LAKE SARBASK
- Author
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Eshmurodova Nargiza Sharofovna, Mamarakhimov Oybek Muratovich, and Usmonova Bahora
- Subjects
flora of algae, the Aral Sea basin, Lake Sarbas, species composition, ecological features, dominant, plankton, benthos, periphyton, phytobenthos - Abstract
The article presents an analysis of the data on the composition of the species of Lake Sarbas algofloras, one of the Aral basins located in the territory of the Republic of Karakalpakstan. The results of scientific research on the ecological characteristics of algae and the prospects for their use are given., {"references":["Ельмуратов А. Е. Фитопланктон южной части Аральского моря и озер Приаралья в условиях антропогенного евтрофирования (систематичес-кая часть) : Дис. … докт. биол. наук. – Ташкент, 1977. – 447 с.","Жукинский В.Н., Оксиюк О.П., Олейник Г.Н., Кошелова С.И. Принципы и опыт построения экологической классификации качества поверхностных вод суши // Гидробиол. журн. – Киев, 1981. Т. XVII. № 12. – С. 38 - 49.","Аладин Н., Плотников И. Изменения уровня Аральского моря: палеолимиологические и археологические доказательства. В сб.: Биологические и природоведческие проблемы Аральского моря и Приаралья: Труды Зоологического института РАН, том 262, часть 1. - СПб, 1995. - С. 17-47 .","Южное Приаралье - новые перспективы. Под ред. проф. В.А. Духовного и Ю. де Шуттера.- Ташкент: «Нори», 2003 - 154 с.","Мониторинг состояния физических, химических и биологических систем Аральского моря в условиях экологического кризиса / П.О. Завьялов, Е.Г. Арашкевич, С.Н. Дикарев, Т.В. Кудышкин, А.К. Курбаниязов, A.A. Ни, Ф.В. Сапожников, Д.М. Соловьев, В.М. Хан // В кн: Современные проблемы аридных и семиаридных экосистем России / Г.Г. Матишов (ред). - Ростов: ЮНЦ РАН, 2006. - С. 529-562.","Аральское море и Приаралье. Обобщение работ НИЦ МКВК по мониторингу состояния и анализу социально- экономической и социально-экономической ситуации в данном ареале с 1994 по 2018 годы. Издательство «Complex Pint», г. Ташкент, 127-129 с."]}
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- 2021
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27. Sustainable Production of Biodiesel from Novel Non-Edible Oil Seeds (Descurainia sophia L.) via Green Nano CeO 2 Catalyst.
- Author
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Akhtar, Maryam Tanveer, Ahmad, Mushtaq, Ramadan, Mohamed Fawzy, Makhkamov, Trobjon, Yuldashev, Akramjon, Mamarakhimov, Oybek, Munir, Mamoona, Asma, Maliha, Zafar, Muhammad, and Majeed, Salman
- Subjects
SUSTAINABILITY ,CERIUM oxides ,FOURIER transform infrared spectroscopy ,THIN layer chromatography ,RESPONSE surfaces (Statistics) ,FATTY acid methyl esters ,FREE fatty acids - Abstract
The current study focuses on the synthesis of Cerium oxide (CeO
2 ) nanocatalyst via Tragacanth Gum (TG) using the wet impregnation method and its application for sustainable biodiesel production from a novel, non-edible Descurainia sophia (L.) Webb ex Prantl seed oil. The D. sophia seed oil has higher oil content (36 wt%) and free fatty acid (FFA) value (0.6 mg KOH/g). Innovative analytical methods, such as X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), and Fourier transform infrared spectroscopy, were used to characterize the newly synthesized, environmentally friendly, and recyclable CeO2 -TG phytonanocatalyst (FT-IR). The results show that the CeO2 -TG phytonanocatalyst was 22 nm in diameter with a spherical shape outer morphology, while the inner structure was hexagonal. Due to low FFA content, the D. sophia seed oil was pretreated and transesterified via a single step. Using varying parameters, the optimized process variables were determined via Response Surface Methodology (RSM). The optimum process values were 8:1 methanol to oil molar ratio, 0.3 wt% catalyst concentration, 90 °C temperature, and reaction time of 210 min with 98% biodiesel yield. The recently created phytonanocatalyst was reliable and effective, with three times reusability in the transesterification reaction. Thin layer chromatography (TLC), FT-IR, gas chromatography–mass spectroscopy (GCMS), and Nuclear magnetic resonance (NMR) analyses were used to characterize the synthesized biodiesel. Physico-chemical properties of D. sophia biodiesel, i.e., Kinematic viscosity (4.23 mm2 /s), density (0.800 kg/m3 ), pour point (−7 °C), cloud point (−12 °C), and flash point (73.5 °C) agree well with international biodiesel standards (ASTM-6751, 951), (EU-14214), and China (GB/T 20828) standards. The results show that the synthesized nanocatalyst demonstrated remarkable stability, indicating a bright future for industrial biodiesel production from low-cost feedstock. [ABSTRACT FROM AUTHOR]- Published
- 2023
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