Dilmurod Makhmudjanov

@botany.uz

Flora of Uzbekistan laboratory
Institute of Botany of the Academy of Sciences of the Republic of Uzbekistan

Dilmurod Makhmudjanov


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https://researchid.co/dilmurodxab

RESEARCH, TEACHING, or OTHER INTERESTS

Plant Science, Ecology, Evolution, Behavior and Systematics, Forestry
13

Scopus Publications

Scopus Publications

  • Characterization of the Wild Trees and Shrubs in the Fergana Valley: Diversity and Distribution, Threats
    Nazokat Daminova, Xian‐Han Huang, Hushbaht R. Hoshimov, Dilmurod Makhmudjanov, Farkhod I. Karimov, Hee‐Young Gil, Komiljon Sh. Tojibaev, Hyeok Jae Choi
    Ecology and Evolution, 2026
    This study aimed to investigate the floristic characteristics, biogeographic distribution, and altitudinal zonation of native trees and shrubs (over 50 cm in height) in the flora of the Fergana Valley (Uzbekistan). Field surveys at 32 sites recorded 165 species from 60 genera and 32 families, including 5 (3.03%) subendemic taxa listed in the national Red Book. Among the families, 14 are represented by a single species each, 10 families by 2–9 species each, and 5 families by 10–15 species each, while the family Rosaceae is represented by 42 species. 26 genera were each represented by a single species, while 34 genera were each represented by 2–10 species, and the genus Rosa was represented by 11 species. Among the life forms represented in the dendroflora, phanerophytes are the most dominant (135 taxa), followed by chamaephytes (30 taxa). The results of the floristic analysis revealed a clear predominance of temperate taxa across all hierarchical levels. At the species level, Central Asian and Temperate Asian elements together accounted for 87.89% of the flora, indicating the distinctly temperate nature of the regional dendroflora and underscoring the crucial role of endemic species in maintaining biodiversity. All taxa inhabit six natural habitat types. Botanical–geographic analysis of the highest species richness was found in the Chorkesar (62.42%) and Eastern Alay (52.72%) regions, while the East–Fergana region contained the lowest (11.51%). According to the results of altitudinal distribution, mountain areas harbored the highest tree and shrub diversity (112 taxa), while the high‐altitude pasture zone is the poorest (7 taxa). The highest diversity along horizontal and vertical gradients was observed in the Rosaceae family (300–3100 m), with peak species richness recorded between 1400 and 2100 m. These findings provide an important scientific reference for identifying regional biodiversity hotspots, conserving rare species, supporting future floristic and biogeographic research.
  • Phylogenetic Diversity and Community Assembly of Vascular Plants Along Environmental Gradients in the Western Pamir–Alay: A Case Study From Surkhandarya Province, Southern Uzbekistan
    Akrom Ibragimov, Bobur Karimov, Zukhuridin Juraev, Dilmurod Makhmudjanov, Shukherdorj Baasanmunkh, Ami Oh, Komiljon Sh. Tojibaev, Hyeok Jae Choi
    Ecology and Evolution, 2026
    Biodiversity plays a fundamental role in ecosystem structure, function, and stability, but its response to environmental gradients is poorly understood in Central Asia. We studied plant species richness, phylogenetic diversity, and community phylogenetic structure along elevational, temperature, and precipitation gradients in Surkhandarya province of southern Uzbekistan. Data were compiled from a 5‐year field survey (2020–2024), herbarium records (TASH, ASH, BM, E, H, LE, M, MW, TAD, MOSM), and digital records from the Plantarium database (plantarium.ru), totalling over 64,500 occurrence records. The flora comprises 2202 species across 615 genera and 96 families, including 62 endemics. Species richness and PD exhibited a left‐skewed, hump‐shaped pattern with a peak at 1000–1100 m, while high‐elevation communities were phylogenetically clustered due to environmental filtering. Mid‐elevations showed phylogenetic overdispersion, reflecting the coexistence of distantly related species. Along climatic gradients, species richness peaked at intermediate temperatures (8°C–12°C) and precipitation (400–500 mm), with phylogenetic structure similarly reflecting clustering at extremes and overdispersion at intermediate conditions. Low‐elevation communities were dominated by drought‐ and salt‐tolerant families (Poaceae, Asteraceae, Amaranthaceae), whereas mid‐elevations supported the highest family diversity. Using endemic and Red Book species records (1504 occurrences of 140 species), a proximity‐weighted conservation prioritization identified a minimal set of areas covering 7.43% of the region, with 4.56% requiring expansion beyond existing protected areas to achieve complete species representation.
  • Assessment of plant diversity in the Surkhan-Sherabad Region, Uzbekistan by grid mapping
    Inom Juramurodov, Rustam Uralov, Dilmurod Makhmudjanov, Chunfang Lu, Feruz Akbarov, Sardor Pulatov, Bakhtiyor Karimov, Orzimat Turginov, Komiljon Tojibaev
    Journal of Arid Land, 2025
  • Central Asia revealed as a key area in evolution of Eremurus (Asphodelaceae)
    Dilmurod Makhmudjanov, Sergei Volis, Ziyoviddin Yusupov, Inom Juramurodov, Komiljon Tojibaev, Tao Deng, Hang Sun
    Plant Diversity, 2024
    Eremurus was described at the beginning of the 19th century. However, due to limited sampling and the small number of gene markers to date, its phylogeny and evolution are largely unknown. In this study, we analyzed plastomes from 27 species belonging to 2 subgenera and 3 sections of Eremurus, which are found in Central Asia (its center of diversity) and China. We also analyzed nuclear DNA ITS of 33 species, encompassing all subgenera and sections of the genus in Central Asia, southwest Asia and China. Our findings revealed that the genus was monophyletic, although both subgenera Eremurus and Henningia were found to be paraphyletic. Both plastome and nrDNA-based phylogenetic trees had three clades that did not reflect the current taxonomy of the genus. Our biogeographical and time-calibrated trees suggest that Eremurus originated in the ancient Tethyan area in the second half of the Eocene. Diversification of Eremurus occurred from the early Oligocene to the late Miocene. Paratethys Sea retreat and several orogenetic events, such as the progressive uplift of the Qinghai-Tibet Plateau and surrounding mountain belts (Altai, Pamir, Tian Shan), caused serious topographic and climate (aridification) changes in Central Asia that may have triggered a split of clades and speciation. In this transformed Central Asia, speciation proceeded rapidly driven mainly by vicariance caused by numerous mountain chains and specialization to a variety of climatic, topographic and soil conditions that exist in this region.
  • Phylogenetic relationships and biogeography in Hedysarum (Hedysareae, Fabaceae) with a focus on Central Asian taxa
    Inom Juramurodov, Dilmurod Makhmudjanov, Pei‐Liang Liu, Ziyoviddin Yusupov, Elena Nikitina, Tao Deng, Komiljon Tojibaev, Hang Sun
    Taxon, 2023
    Central Asia, especially the Tian‐Shan and Pamir‐Alay, is a biodiversity hotspot for Hedysarum (Fabaceae) with a high number of endemic species. However, to date, studies of the genus Hedysarum based on molecular data have included only a few species distributed in this region. To fill this gap, we analysed 110 Hedysarum species, 36 of which were from the Tian‐Shan and Pamir‐Alay Mountains of Central Asia. We performed phylogenetic analyses, divergence time estimates, and biogeographic analyses using both the internal transcribed spacers of nuclear ribosomal DNA (nrDNA ITS) and three plastid DNA (cpDNA) sequences (trnL‐trnF, matK, psbA‐trnH). Our phylogenetic analysis grouped the species of Hedysarum into three sections: H. sect. Hedysarum, sect. Multicaulia, and sect. Stracheya, which are largely consistent with previous phylogenetic classifications. Accordingly, most of the Central Asian species we studied (28 spp.) were placed in H. subsect. Crinifera within H. sect. Multicaulia. Our divergence time and biogeographic analyses indicate that Hedysarum likely originated in West Asia and/or East Asia during the Early Miocene or Middle Miocene and subsequently dispersed to adjacent areas of Eurasia, as well as North America via the Bering Land Bridge. The likely area of origin for H. sect. Multicaulia is West Asia, while East Asia appears to be the center of origin for H. sect. Hedysarum and sect. Stracheya. In addition, we suggest that the rapid radiation of the species of H. subsect. Crinifera occurred in the Tian‐Shan and Pamir‐Alay Mountains, as well as the Turkish‐Iranian Plateau, and that geological and climatic changes were the main causes of speciation in Hedysarum.
  • Comparative Analysis and Characterization of Ten Complete Chloroplast Genomes of Eremurus Species (Asphodelaceae)
    Dilmurod Makhmudjanov, Davlatali Abdullaev, Inom Juramurodov, Shakhzodbek Tuychiev, Ziyoviddin Yusupov, Hang Sun, Komiljon Tojibaev, Tao Deng
    Forests, 2023
    Eremurus, a perennial rhizomatous mesophytic ornamental plant and one of the largest genera of the family Asphodelaceae, is distributed mainly in southwestern and central Asia. We sequenced the complete chloroplast genomes of ten species corresponding to all sections of the genus and analyzed their basic structure and evolutionary relationships. The cp genomes showed significant similarities in size, gene sequences, gene classes, and inverted repeat regions (IRs). The complete chloroplast genome of Eremurus has a typical tetrad structure, ranging in length from 153,782 bp (E. lactiflorus) to 155,482 bp (E. aitchisonii). The length of the large single-copy region (LSC) ranges from 84,005 bp (E. lactiflorus) to 84,711 bp (E. robustus), that of the small single-copy region (SSC) ranges from 16,727 bp (E. soogdianus) to 17,824 bp (E. suworowii), and that of the inverted repeat regions (IR) ranges from 26,484 bp (E. lactiflorus) to 26,597 bp (E. inderiensis and E. soogdianus). A total of 131 genes were detected, including 85 protein-coding genes, 8 rRNA genes, and 38 tRNA genes. In addition, we found seven common and eight unique SSRs in ten Eremurus species. Among the protein-coding genes, five highly variable genes (ycf1, rps15, rps16, and rpl36) with high Pi values were detected and showed potential as DNA barcodes for the genus. Three genes (rps19, ycf1, and ndhB) had positive Ka/Ks values. Codon usage patterns were very similar across species: 33 codons had relative synonymous codon usage values of more than one, of which three ended with G, and the remaining codons ended with A and U. Phylogenetic analyses using complete cp genomes and 81 protein-coding genes confirmed previous studies with the genus as well as subgenus Eremurus monophyletic and the subgenus Henningia paraphyletic.
  • First comparative analysis of complete chloroplast genomes among six Hedysarum (Fabaceae) species
    Inom Juramurodov, Dilmurod Makhmudjanov, Ziyoviddin Yusupov, Komiljon Tojibaev
    Frontiers in Plant Science, 2023
    Hedysarum is one of the largest genera in the Fabaceae family, mainly distributed in the Northern Hemisphere. Despite numerous molecular studies on the genus Hedysarum, there is still a lack of research aimed at defining the specific characteristics of the chloroplast genome (cp genome) of the genus. Furthermore, the interrelationships between sections in the genus based on the cp genome have not yet been studied. In this study, comprehensive analyses of the complete cp genomes of six Hedysarum species, corresponding to sections Multicaulia, Hedysarum, and Stracheya were conducted. The complete cp genomes of H. drobovii, H. flavescens, and H. lehmannianum were sequenced for this study. The cp genomes of six Hedysarum species showed high similarity with regard to genome size (except for H. taipeicum), gene sequences, and gene classes, as well as the lacking IR region. The whole cp genomes of the six species were found to contain 110 genes ranging from 121,176 bp to 126,738 bp in length, including 76 protein-coding genes, 4 rRNA genes, and 30 tRNA genes. In addition, chloroplast SSRs and repetitive sequence regions were reported for each species. The six Hedysarum species shared 7 common SSRs and exhibited 14 unique SSRs. As well, three highly variable genes (clpP, accD, and atpF) with high Pi values were detected among protein-coding genes. Furthermore, we conducted phylogenetic analyses using the complete cp genomes and 76 protein-coding genes of 14 legume species, including the seven Hedysarum species. The results showed that the Hedysarum species form a monophyletic clade closely related to the genera Onobrychis and Alhagi. Furthermore, both of our phylogenetic reconstructions showed that section Stracheya is more closely related to section Hedysarum than to section Multicaulia. This study is the first comprehensive work to investigate the genome characteristics of the genus Hedysarum, which provides useful genetic information for further research on the genus, including evolutionary studies, phylogenetic relationships, population genetics, and species identification.
  • Seed macro- and micromorphology in Allium (Amaryllidaceae) and its phylogenetic significance
    Ziyoviddin Yusupov, Ibrokhimjon Ergashov, Sergei Volis, Dilmurod Makhmudjanov, Davron Dekhkonov, Furkat Khassanov, Komiljon Tojibaev, Tao Deng, Hang Sun
    Annals of Botany, 2022
    Background and Aims Macro- and micromorphology of seeds are diagnostic characteristics of importance in delimiting taxa in Allium (Amaryllidaceae). However, there is no consensus on the phylogenetic significance of testa cell characteristics and whether they reflect the different evolutionary levels recognized in Allium. Methods Seeds of 95 species (98 samples) representing 14 subgenera and 58 sections of Allium were examined using scanning electron microscopy (SEM) for such traits as periclinal wall surface area of ten testa cells, distance between testa cells (macromorphology), testa cell shapes, and arrangement and structure of anticlinal and periclinal walls (micromorphology). The data matrix was subjected to cladistic analysis. The produced phylogenetic tree was examined against the molecular tree obtained from publically available ITS sequences. Key Results The periclinal wall surface area of ten testa cells and the distance between them, examined for the first time, were found useful for delimitation of species in Allium. Based on seed macro- and micromorphology, we present a taxonomic key and a hypothetical reconstruction of the migration routes during the early stages of evolution of Allium. Conclusions The ancestors of Allium originated in an area bounded by the Caucasus, Central Asia and Iran. The seed testa morphology-based evolutionary state of a species is determined by two parameters: the shape of the periclinal walls and curvature of the anticlinal walls.
  • Hedysarum sunhangii (Fabaceae, Hedysareae), a new species from Pamir-Alay (Babatag Ridge - Uzbekistan)
    INOM JURAMURODOV, KOMILJON TOJIBAEV, ELENA NIKITINA, DILMUROD MAKHMUDJANOV, ZIYOVIDDIN YUSUPOV, TAO DENG, DAVRON DEHKANOV
    Phytotaxa, 2021
    Hedysarum sunhangii is a new species described from the Babatag Ridge in the Uzbekistan part of the South-West Pamir-Alay (Central Asia). Morphological and molecular phylogenetic analyses were utilized to determine the taxonomic position of the species in genus Hedysarum. This new species belongs to the subsect. Crinifera of the sect. Multicaulia and it resembles H. criniferum and H. nuratense, but can be distinguished by details of its 3–4 pairs of larger and elliptical or ovate shaped leaflets, standard and keel sizes.
  • Mapping and analyzing the distribution of the species in the genus tulipa (Liliaceae) in the ferghana valley of central asia
    Davron DEKHKONOV, Komiljon Sh. TOJIBAEV, Dilmurod MAKHMUDJANOV, Nu-ree NA, Shukherdorj BAASANMUNKH, Ziyoviddin YUSUPOV, Hyeok Jae CHOI, Chang-Gee JANG
    Korean Journal of Plant Taxonomy, 2021
    Tulips are bulbous geophytes that have considerable commercial value worldwide. This genus primarily originated in the Tien Shan and Pamir-Alai mountain ranges, which surround the Ferghana Valley. The Ferghana Valley is home to five sections of the genus Tulipa L, represented by 23 taxa (22 species). However, there is a lack of detailed information about the distribution of Tulipa species in the natural geographic area of the Ferghana Valley. Therefore, to address this knowledge gap, we comprehensively investigated the spatial distribution of all Tulipa species in the valley. To assess the spatial distribution, the entire area was divided into 32 squares consisting of four latitudinal and eight longitudinal zones. The results showed that latitudinal zones B and C with 15 and 13 taxa, respectively, along with five longitudinal zones (A5, B3, B4, C2, and C3) with 5 to 10 taxa were hotspots for this genus. Additionally, the spatial distributions of the species in terms of the corresponding state borders, mountain ranges, endemism, and conservation issues were assessed. The findings of this study provide comprehensive information about the distribution of Tulipa species to assist with conservation initiatives ultimately to ensure the survival of various species.
  • Phylogenomics of Allium section Cepa (Amaryllidaceae) provides new insights on domestication of onion
    Ziyoviddin Yusupov, Tao Deng, Sergei Volis, Furkat Khassanov, Dilmurod Makhmudjanov, Komiljon Tojibaev, Hang Sun
    Plant Diversity, 2021
  • Characterization of the complete plastome of Atropanthe sinensis (Solanaceae)
    Zhilin Jiang, Ziyoviddin Yusupov, Xianhan Huang, Dilmurod Makhmudjanov, Komiljon Tojibaev, Tao Deng
    Mitochondrial DNA Part B Resources, 2019
  • The complete chloroplast genome of Eremurus robustus (Asphodelaceae)
    Dilmurod Makhmudjanov, Ziyoviddin Yusupov, Davlatali Abdullaev, Tao Deng, Komiljon Tojibaev, Hang Sun
    Mitochondrial DNA Part B Resources, 2019