Dr. M. Oliur Rahman

University of Dhaka · Department of Botany

The underdeveloped countries with large populations are facing a grave global threat in the form of cholera. Vibrio cholerae, the etiologic agent of Cholera has drawn attention recently due to antimicro-bial resistance and resulting outbreaks that necessitates establishment of novel medications to counteract virulence and viability of the pathogen....

In the present study, we have characterized the complete chloroplast (Cp) genome of Meconopsis torquata Prain (family Papaveraceae), revealing the plastome size of 153,290 bp, and a GC content of 38.72 %. The cp genome features the typical circular quadripartite structure found in flowering plants, including a pair of inverted repeat regions (25,81...

Taxonomic revision and morphometrics are two crucial facets for the proper identification, updating of taxa, and strengthening phenetic relationships of angiosperms. This study focused on the systematics and morphometrics of the subfamily Byttnerioideae Burnett (Family Malvaceae) for the first time in Bangladesh, revealing eight taxa under seven ge...

The present investigation unveiled the first complete chloroplast (cp) genome of Tribulus macropterus var. arabicus (Hosni) Al-Hemaid & J. Thomas (Zygophyllaceae), a medicinal herb, indigenous to Saudi Arabia. The cp genome, comprising a length of 158,179 bp and a GC content of 35.8%, exhibited the typical circular quadripartite arrangement of flow...

The current unveiled the first complete chloroplast (cp) genome of Fraxinus griffithii C.B. Clarke (Oleaceae), a threatened medicinal tree species in Bangladesh spanning a total length of 155,683 bp with a GC content of 37.86%. The cp genome has been submitted to GenBank under the accession number “PP669282”. The plastome represented the typical ci...

Addition to the angiosperm flora provides essential insights into the biodiversity of a region, contributing to ecological understanding and conservation planning. Gafargaon subdistrict under Mymensingh district in Bangladesh represents a diverse population of angiosperms with a multifaceted ecosystem that demands re-evaluation of the existing angi...

Taxonomic revision, morphometrics, and molecular phylogenetics are three crucial facets for the proper identification, updating of taxa, and strengthening of the phylogeny of angiosperms. The present study focused on the systematics, morphometrics, and molecular phylogenetics of the subfamily Byttnerioideae (Family Malvaceae) based on rbcL and matK...

A molecular phylogenetic investigation was undertaken for 30 species belonging to 15 genera of the palm family Arecaceae in Bangladesh to infer evolutionary relationships and molecular dating utilizing plastid-based matK and rbcL genes through multifaceted-algorithm driven approaches with Neighbor-Joining, Maximum-Likelihood, and Bayesian Inference...

Background and Aims The study aimed to evaluate the pharmacological properties of methanolic extracts of leaves and barks of Woodfordia fruticosa (L.) Kurz (family: Lythraceae) focusing on antioxidant, thrombolytic, anti‐inflammatory, antibacterial, analgesic, and antidiarrheal effects. Methods 1,1‐Diphenyl‐2‐picrylhydrazyl (DPPH) free radical sca...

Cancer is one of the leading causes of death due to its very high rate of morbidity and mortality, and there is a constant demand of effective drugs for cancer therapy. Vascular endothelial growth factor receptor-2 (VEGFR-2) plays a significant role as central modulator of angiogenesis and is targeted frequently for developing anti-angiogenic agent...

An ethnobotanical investigation was carried out in Gafargaon sub-district (upazila) under Mymensingh district, Bangladesh that unveiled a total of 79 medicinal plant species under 74 genera and 46 families which were used to treat various ailments through 106 formularies. In addition, molecular docking and dynamics simulation studies were performed...

In recent years, small molecule inhibition of LDHA (Lactate Dehydrogenase A) has evolved as an appealing option for anticancer therapy. LDHA catalyzes the interconversion of pyruvate and lactate in the glycolysis pathway to play a crucial role in aerobic glycolysis. Therefore, in the current investigation LDHA was targeted with bioactive phytochemi...

From the time of the establishment until the centennial birth anniversary of the University of Dhaka in 2021, the Department of Botany has travelled nearly a path of 82 years of its development and progress. The department currently hosts nearly 10 different disciplines on plant sciences through which young pre-graduate level students start learnin...

An ethnomedicinal investigation was carried out in Sherpur Sadar and Sreebardi upazilas of Sherpur district to record, and document the traditional knowledge alongside with determining the consensus factor, citation frequency and fidelity level among the folklore medicinal practitioners. A total 51 plant species belonging to 49 genera and 38 famili...

The subfamily Sterculioideae Beilschm. of Malvaceae has been revised for Bangladesh which revealed 16 taxa belonging to five genera, such as Firmiana Marsili, Heritiera Ait., Pterygota Schott & Endl., Scaphium Schott & Endl. and Sterculia L. The genus Sterculia is unveiled with the highest number of taxa, whereas both Pterygota and Scaphium are rep...

The genus Asparagus Tourn. ex Linn. represented by five species in Bangladesh, viz., Asparagus adscendens Roxb., A. densiflorus (Kunth) J.P. Jessop, A. officinalis L., A. racemosus Willd. and A. setaceus (Kunth) J.P. Jessop is revised. Each species is described with updated nomenclature, important synonyms, phenology, specimens examined, chromosome...

Integrating greeneries into the indoor dwelling environment boosts work performance and relieves stress to add to the overall psychological well-being especially in deserted urban settings. In addition to mental soothing, thermal regulation, air purification, aesthetics, public health, and comfort, the addition of plants to indoor settings may also...

In vitro cytotoxic and anticancer activity of Argyreia nervosa (Burm. f.) Boj, Clerodendrum viscosum Vent., Moringa oleifera Lamk., Oroxylum indicum (L.) Kurz., Tinospora cordifolia (Wild.) Hook. f. & Thoms. and Vitex negundo L were investigated employing 80% methanol extracts of leaves, root bark and stem on the cancer cell lines HeLa, BHK-21, NP-...

Theobroma cacao L. (Malvaceae) is a Mesoamerican ancestral crop with enormous economical and medicinal significance. This species is enriched with a variety of bioactive phytochemicals that can provide a new regime in the discovery of effective drugs for SARS-CoV-2 Omicron variant. This variant of concern has evolved from the Indian Delta variant B...

A new variety Abrus precatorius L. var. albo-spermum Hassan, Rahman et Afroz, var. nov. is described and illustrated from Bangladesh. The new variety is closest to Abrus preactorius L., but differs by its white coloured oval shaped seeds, short gynoecium which is half the length of longer filaments and with a short style. Bangladesh J. Plant Taxon....

The Internal Transcribed Spacers (ITS) sequences of nuclear ribosomal DNA (nrDNA) are commonly used in plant molecular phylogenetics for the molecular based taxonomic identification and DNA barcoding because of shorter length and easy to amplify by using the universal primers, and further has discrimination ability to distinguish the taxon at lower...

Random amplified polymorphic DNA (RAPD) markers were employed for characterization, assessment of genetic variation and inferring relationships among six variants of Canna indica L. A total of 198 RAPD bands ranging from 200 bp to 3 kbp were generated by all the six variants. Among them, most of the bands were found to be polymorphic, four band wer...

Adenium obesum (Forssk.) Roem. & Schult. belonging to the family Apocynaceae, is remarkable for its horticultural and ornamental values, poisonous nature, and medicinal uses. In order to have understanding of cp genome characterization of highly valued medicinal plant, and the evolutionary and systematic relationships, the complete plastome / chlor...

Adenium obesum (Forssk.) Roem. & Schult. belonging to the family Apocynaceae, is remarkable for its horticultural and ornamental values, poisonous nature, and medicinal uses. In order to have understanding of cp genome characterization of highly valued medicinal plant, and the evolutionary and systematic relationships, the complete plastome / chlor...

Saraca asoca (Roxb.) Willd. (subfamily Detarioideae, family Fabaceae) is a perennial evergreen sacred medicinal tree classified under ‘vulnerable’ by the IUCN. The chloroplast (cp) genome/plastome which follows uniparental inheritance contains many useful genetic information because of its conservative rate of evolution. The assembled cp genome of...

Context Streblus asper Lour. (Moraceae) is used for the treatment of different ailments, including diabetes, and requires scientific validation. Objective The study evaluates antidiabetic effects, antioxidant potential, and cytotoxicity of leaf and bark extracts of S. asper. Materials and methods Antidiabetic effects were assessed by inducing dia...

The systematic relationships of Krameriaceae have changed considerably. The phylotranscriptomic data sets provide highly informative data for resolving deeper-level phylogenetic relationships. The phylotranscriptomic analyses to infer evolutionary relationships of Krameriaceae in the order Zygophyllales using the Minimum Evolution, Maximum Parsimon...

A taxonomic study on the flora of Dohar upazila (sub-district) under Dhaka district has been conducted that results in occurrence of 204 angiosperm taxa under 165 genera and 68 families. Magnoliopsida is represented by 158 taxa distributed in 129 genera and 53 families. In contrast, Liliopsida is constituted by 46 taxa under 36 genera and 15 famili...

Saraca asoca (Roxb.) Willd. (subfamily Detarioideae, family Fabaceae) is a perennial evergreen sacred medicinal tree classified under ‘vulnerable’ by the IUCN. The chloroplast (cp) genome / plastome which follows uniparental inheritance contains many useful genetic information because of its conservative rate of evolution. The assembled cp genome o...

Three species of Zephyranthes Herb. viz. Z. candida (Lindl.) Herb., Z. carinata Herb. and Z. tubispatha Herb. were cytotaxonomically studied to characterize and elucidate probable evolutionary relationship among them. These species were found to possess different chromosome number and karyotype formula such as 2n=38=32m+6sm in Z. candida, 2n=24=14m...

not available Bangladesh J. Plant Taxon. 27(1): 185-189, 2020 (June)

Background In the prokaryotic unicellular bacteria, Streptomyces species are the most frequent producers of bioactive secondary metabolites. Our continuous quest for new antibiotics from Actinomycetes genera put us forward for isolation of a strain Streptomyces sp. 150 from the soil samples collected at the Daegu University premises in Korea. Obje...

A leafy liverwort, Jungermannia exertifolia Steph. (Hepaticae, Jungermanniales,) has been reported from the Adampur Forest of Moulvibazar district as a new species record for Bangladesh. Jungermannia exertifolia is characterized by its flattened leaves and rhizoids arising ventrally all along the stem with alternate leaves, which are obliquely inse...

Six medicinal plants, namely Boerhavia diffusa L., Calotropis procera (Ait.) R. Br., Jatropha gossypifolia L., Leonurus sibiricus L., Plumbago zeylanica L. and Ricinus communis L. of Bangladesh having anticancerous properties were investigated with a view to knowing their seed germination time, rate and pattern. The minimum days taken for seed germ...

The present study explores detailed morphological and anatomical features of six variants of Canna indica L. Noticeable variations have been recorded in the morphology of six variants of C. indica especially on the basis of their different colours of leaves, flowers, staminodes and fruits. Root, stem and leaf anatomy of C. indica revealed little va...

Gafargaon upazila has been floristically explored to identify and assess the angiospermic flora that resulted in occurrence of 203 taxa under 174 genera and 75 families. Magnoliopsida is represented by 167 taxa under 140 genera and 62 families, while Liliopsida is constituted by 36 taxa belonging to 34 genera and 13 families. Vegetation analysis sh...

The chloroplasts genome encodes several key proteins that involves in the process of the photosynthesis and also in other metabolic processes important for growth and development, yield, biomass, and plant interactions with their environment. The present study aimed to sequencing of cp genome of Fagonia indica Burm.f (Zygophyllaceae), -a plant that...

Karyomorphological characters were investigated in four floral variants of Impatiens balsamina L. viz. white, pink, violet and red for proper characterization and inferring relationships among them. All four floral variants of I. balsamina were found to possess 2n = 14 chromosomes, and 'Simple Chromocenter Type' of interphase nuclei was observed in...

Floristic study in Lalpur Upazila of Natore district has identified 216 species distributed in 173 genera and 72 families, of which Magnoliopsida (Dicotyledons) is represented by 188 species under 147 genera and 60 families, while Liliopsida (Monocotyledons) is constituted by 28 species under 26 genera and 12 families. In Magnoliopsida, Asteraceae...

Micromorphology and anatomy of six Onosma L. species, viz. O. argentata Hub.-Mor., O. neglecta Riedl, O. proballanthera Rech. f., O. rechingeri Riedl, O. sericea Willd. and O. stenoloba Hausskn. ex Riedl from Turky were investigated. Stem anatomy revealed that cuticle layer ranged from 0.6 µm in O. argentata to 1.7 µm in O. proballanthera. Parenchy...

The present study explores detailed morphoanatomical features of five species of Piper L., viz. P. betle L., P. longum L., P. nigrum L., P. retrofractum Vahl and P. sylvaticum Roxb. Each species is supplemented by detailed updated nomenclature, vernacular names, diagnostic characters, phenology, ecology and representative specimens. Maximum number...

Morphological, anatomical and cytological features of three Turkish taxa of Centaurea L., viz. C. polypodiifolia Boiss. var. polypodiifolia, C. urvillei DC. subsp. urvillei and C. urvillei subsp. armata Wagenitz were investigated. Stem anatomy revealed the presence of a thick cuticle layer outside the stem, and epidermis with dense hairs was observ...

The genus Crinum L. represented by eight species in Bangladesh is revised. The species occurring in Bangladesh are Crinum amabile Donn, C. amoenum Roxb., C. asiaticum L., C. defixum Ker-Gawl., C. jagus (Thomps.) Dandy, C. latifolium L., C. pratense Herb. and C. stenophyllum Baker. Each species is described with updated nomenclature, important synon...

An ethnobotanical study was carried out to identify ethnomedicinally important plants of Barisal district of Bangladesh, document their traditional uses, and determine the consensus factor among the Folklore Medicinal Practitioners (FMPs). A total of 106 ethnomedicinal species under 55 families have been identified from Barisal district, which are...

In this study, an ethnomedicinal plant Glycosmis pentaphylla Lour. has been investigated for its pharmacological potential including antidiabetic, antioxidant, and cytotoxic activities. In the investigation of antidiabetic activity, diabetic induced rats were received methanol extract repeatedly for consecutive 3 weeks. This treatment with the extr...

p>The essential oil from the seeds of oriental medicinal plant Poncirus trifoliata (L.) Raf. was tested for repellent and fumigant efficacy on fruit fly ( Drosophila melanogaster ) and mosquito ( Anopheles culicifacies ). The oil showed potent activity with 76.2 and 93.2% mortality in fumigant assay, and 77.1 and 93.2% repellent efficacy on fruit f...

The essential oil from the seeds of oriental medicinal plant Poncirus trifoliata (L.) Raf. was tested for repellent and fumigant efficacy on fruit fly (Drosophila melanogaster) and mosquito (Anopheles culicifacies). The oil showed potent activity with 76.2 and 93.2% mortality in fumigant assay, and 77.1 and 93.2% repellent efficacy on fruit fly at...

Mikania cordata is widely used for the treatment of cuts, wounds, and dengue fever in Bangladesh. In the present study, essential oil (12.5, 25 and 50 mg/kg) and two extracts, viz., chloroform and ethyl acetate extracts (200, 400, 800 mg/kg b.w.) were tested for peripheral and central anti-nociceptive activity by acetic acid-induced writhing and ho...

Mikania cordata is widely used for the treatment of cuts, wounds, and dengue fever in Bangladesh. In the present study, essential oil (12.5, 25 and 50 mg/kg) and two extracts, viz., chloroform and ethyl acetate extracts (200, 400, 800 mg/kg b.w.) were tested for peripheral and central anti-nociceptive activity by acetic acid-induced writhing and ho...

div>The genus Zephyranthes Herb. is revised along with its pollination mechanism, seed germination and vegetative propagation. Detailed taxonomy of four Zephyranthes species occurring in Bangladesh, namely, Z. atamasco (L.) Herb., Z. candida (Lindl.) Herb., Z. carinata Herb. and Z. tubispatha (L’Her.) Herb. ex Traub. was studied with their updated...

p>Three species belonging to two genera of the family Euphorbiaceae are being reported here as new records for Bangladesh, viz., Cleidiocarpon laurinum Airy Shaw, Euphorbia pycnostegia Boiss. and Euphorbia repens K. Koch. The genus Cleidiocarpon Airy Shaw is also a new generic record for Bangladesh. One cultivated species, Acalypha wilkesiana Muell...

p>This paper presents potential honey bee plants in Espiye (Giresun) which can be considered as a guide for beekeepers and researchers. A total of 149 taxa belonging to 125 genara and 48 families were recorded as pollen and nectary sources for honey bee colonies at Espiye (Giresun) region. Among the recorded taxa 58 were Phanerophytes, 57 taxa Hemi...

OBJECTIVE To isolate and characterize bioactive compound from traditionally important medicinal plant Mikania cordata, and to investigate muti-faced pharmacological activities of the isolated compound. METHODS A triterpeenoid, 16-hydroxy betulinic acid (16 HBA) was isolated from Mikania cordata leaf and the structure of the compound was determined...

The aerial parts of extensively used ethnomedicinal plant Mikania cordata (Burm. f.) Robinson growing wild in Bangladesh were investigated to isolate and characterize compounds responsible for the bioactivities of the plant. In the present study, a new derivatives of betulinic acid, 16-hydroxy betulinic acid [3β,16-dihydroxy-lup-20(29)-en-28-oic] w...

Mikania cordata is widely used for the treatment of cuts, wounds, and dengue fever in Bangladesh. In the present study, essential oil (12.5, 25 and 50 mg/kg) and two extracts, viz., chloroform and ethyl acetate extracts (200, 400, 800 mg/kg b.w.) were tested for peripheral and central anti-nociceptive activity by acetic acid-induced writhing and ho...

p>This paper presents addition of 89 taxa under 64 genera distributed in 32 families for the flora of Bangladesh which are not included in the monumental works Flora of British India, Bengal Plants and Encyclopedia of Flora and Fauna of Bangladesh. Updated nomenclature, family name, references to the work and the precise localities have been furnis...

p>Genetic variation and molecular relationships among eight taxa of Desmodium Desv. were assessed on the basis of random amplified polymorphic DNA (RAPD) markers. The banding patterns of eight taxa namely, Desmodium gangeticum (L.) DC., D. heterocarpon (L.) DC., D. heterophyllum (Willd.) DC., D. motorium (Houtt.) Merr., D. pulchellum (L.) Benth., D...

Antioxidant, cytotoxicity and antimicrobial activities of methanol extract and its different soluble partitionates of the bark and leaves of Aphanamixis polystachya (Wall.) R. N. Parker were evaluated. In the antioxidant assay by DPPH method, the crude methanolic extract of bark and chloroform soluble fraction of crude extract of leaves of A. polys...

The taxonomic status of Euryops jaberiana Abedin & Chaudhary (tribe Senecioneae, family Asteraceae), endemic to northern Saudi Arabia was evaluated based on molecular phylogenetic analyses of internal transcribed spacer sequence (ITS) of nuclear ribosomal DNA (nrDNA) in order to ascertain its position within the genus. The phylogenetic tree constru...

The present study has found a total of 189 plant species belonging to 152 genera and 74 families growing in homesteads in the south-central coastal region of Bangladesh. Despite variation of species diversity was found in different saline zones the highest numbers of species were recorded in moderately saline zone. Distribution of existing plant sp...

The present study explored molecular phylogenetic analysis of 28 species of Euphorbia L. for the identification and establishment of molecular evolutionary relationships of Euphorbia scordifolia Jacq. within the genus based on the internal transcribed spacers (ITS) sequences (ITS1-5.8S-ITS2) of nuclear ribosomal DNA (nrDNA). The sequence similarity...