Abdullahi Alanamu AbdulRahaman

AbdulRahaman has published many articles in reputable journals, both locally and internationally. His publications included articles in journals, conference proceedings, books, and chapters in books.
He has served the Department, Faculty, and the University in various capacities (administratively and as members of various committees). He was the Acting Head of the Department between 2013 to 2015 and substantial Head of the Department from 2017 to 2021.
He is a member of many academic societies such as the Botanical Society of Nigeria (BOSON), Nigerian Society of Experimental Biology (NISEB), Society for Conservation of Phytofuel and Sciences, Linnean Society of London, Society of Biology, Society of Herbarium Curator, and American Society of Plant Taxonomists. He is the Vice President I of the Society for Conservation of Phytofuel and Sciences, and an Assistant Editor for the International Journal of Phytofuel and Sciences.

EDUCATION

Nigeria Certificate of Education (NCE) in 1992 from the Kwara State College of Education, Ilorin,
B.Sc. [Hons] Degree (Botany) in 1998 from the Department of Biological Sciences,
M.Sc. Degree (Botany) and Ph.D. Degree (Plant Biology) in 2002 and 2010 from the Departments of Botany and Plant Biology of the University of Ilorin, Ilorin, Nigeria respectively.
Higher National Diploma in Public Administration in 1996 from Kwara State Polytechnics, Ilorin,
Certificate in Data Processing in 1997 from the University of Ilorin Computer Centre

RESEARCH, TEACHING, or OTHER INTERESTS

Plant Science

Scopus Publications

Morphometric Studies of Accessions of Duranta erecta L. (Vebernaceae) Complex in Nigeria
ABDULQUADRI SAGAYA and ABDULLAHI ALANAMU ABDULRAHAMAN
UNIMAS Publisher
Studies were conducted to broaden the systematic knowledge of the genus Duranta erecta L., to contribute a better understanding of their taxonomic and evolutionary relationships. Previous studies have pointed out complexity in the taxonomy and nomenclature of the species. A total of 224 samples were collected from six geo-political zones of Nigeria, and were grouped into 38 accessions. The plants were compared using 21 morphological characters involving qualitative and quantitative characteristics. Multivariate analyses such as Principal Component Analysis (PCA) and Cluster Analysis (CA) were employed to evaluate the intraspecific variabilities. The results showed that all the plants exhibited significant differences in all the quantitative attributes with the variegated type having the longest and widest leaves ranging from 12.20 cm and 5.08 cm, respectively. The qualitative characters delimited the plants accessions into distinctive groups of eight morphological forms namely; green bush, yellow bush, variegated yellow, variegated white, variegated yellow double, plain yellow, broad green, thorny green type. The PCA showed that leaf length, leaf width, internode length and length of inflorescence were some of the quantitative characters while leaf shape, leaf colour, leaf margin, flower colour and leaf apex are some of the qualitative traits that accounted for the delimitation. Unpaired Weighted Group Multivariate Analysis (UPGMA) using the Euclidian separated the 38 accessions into two major clusters; cluster I (flower producing) and cluster II (non-flower producing) Duranta erecta. Morphological variations and field observations suggested that there could be gene flow among the accessions of Duranta erecta studied and gene flow is an important factor in population genetics, shaping the diversity of species.


Agro-technology of important medicinal plants: From farm to pharma
Nikita Patel, Swetal Patel, Abdullahi A. AbdulRahaman, and Ramar Krishnamurthy
CRC Press



Molecular Characterization of Potential Crop Pathogens Associated with Weeds as Endophytes in Uniilorin Plantations, Nigeria
A. A. Lateef, T. Garuba, K. A. Abdulkareem, B. U. Olayinka, G. S. Olahan, S. B. Adeyemi, and K. A. Abdulkareem
College of Science for Women
Crop diseases are usually caused by inoculum of pathogens which might exist on alternate hosts or weeds as endophytes. These endophytes, cum pathogens, usually confer some beneficial attributes to these weeds or alternate hosts from protection against herbivores, disease resistance, stress tolerance to secondary metabolites production. This study was therefore carried out to isolate potential crop pathogens which exist as endophytes on weed species in the University of Ilorin plantations. Green asymptomatic leaves were collected from 10 weed species across the plantations, and processed for their endophytic fungi isolation. Isolates were purified into pure cultures and used for molecular identification using the internal transcribed spacer (ITS) region of the ribosomal DNA. Phylogenetic analysis of the fungal sequences using MEGA software revealed 9 fungal genera belonging to 13 species, with species in the genera Curvularia, Epicoccum and Daldinia occurring in more than one weed species, while other genera such as Alternaria, Fusarium, Chaetomium, Macrophomina, Arthrinium and Phomopsis occurred in just one weed species each. Daldinia eschscholtzii was isolated in this study as an endophyte from Loudetia arundinacea for the first time. This plant is very abundant in Nigeria and Africa where it is used majorly for thatching and feeding livestocks. This also represents the first endophytic fungi from the genus Loudetia. Potential relationship between the occurrences of these fungi as endophytes and as pathogens are discussed. These discoveries represent the first large-scale molecular identification and several first reports of endophytes from these weed species. These results also represent the first records of some of these fungi in Nigeria.


A numerical approach to the taxonomy of some species of the subtribe cassiinae in Nigeria
Opeyemi Saheed Kolawole, Abdullahi Alanamu Abdulrahaman, Emmanuel Chukwudi Chukwuma, and Mahboob Adekilekun Jimoh
Firenze University Press
Twelve morphological parameters from the leaves, fruits, and pedicel of fifteen (15) species of the subtribe Cassiinae were studied using the methods of numerical taxonomy. Characters such as leaflet length, leaflet width, and leaflet length/width ratio contributed significantly in the delimitation of the species studied. While C. italica and Ch. mimosoides are the most closely related taxa, C. fistula and C. singueana appear to be the most distantly related as reflected by the cluster coefficients. Further illustrations as revealed by the dendrogram and scatter plot generated placed the 15 studied species into three groups. While we acknowledge the relevance of phylogenetic analysis in taxonomic studies as it is in recent times, we strongly support the application of numerical taxonomy to compliment findings.


Variability of selected tomato (Lycopersicon esculentum) cultivars for yield traits and storability under southern Guinea Savannah ecological vegetation
Gaurav Publications



Surface sterilization of Ocimum seeds and tissues with biosynthesized nanosilver and its effects on callus induction
AA Adebomojo and AA AbdulRahaman
IOP Publishing
Abstract Plant tissue culture is a basic and fundamental component of plant biotechnology. Nowadays, nanomaterials especially nanosilver (NS) are being used as an antimicrobial agents for surface sterilization of explants in tissue culture. In this study, biosynthesized nanosilver (BNS) was used for the surface sterilization of Ocimum seeds and tissues and its effects on callus induction were evaluated. The seeds and tissues were exposed to different concentrations of BNS (10, 50 and 100 mg/l) as well as 5% Clorox for five exposure times (5, 10, 20, 30 and 60 min) and effects on germination, callus induction and surface sterilization were determined. The BNS was found very effective on surface sterilization as 100% decontamination was achieved with no adverse effect on explant viability and callus formation but rather had stimulating effect on formation of callus. The study concluded that BNS can be used as an antimicrobial agent in surface disinfection of explants therefore extending the frontiers of the potential application of biosynthesized nanosilver in tissue culture.


Comparative biodiversity assessment of weed species in monocropping plantations of University of Ilorin, Nigeria




Effects of malaria parasitaemia on some haemostatic parameters among pregnant women of African descent in Specialist Hospital Sokoto, Nigeria
Osaro Erhabor, Abdullahi Abdulrahaman, and Tosan Erhabor
IOS Press
BACKGROUND Malaria in pregnancy is a major contributor to adverse maternal and prenatal outcome. In hyper endemic areas like ours, it is a common cause of anaemia in pregnancy and is aggravated by poor socioeconomic circumstance. This study evaluated the prothrombin time and activated partial thromboplastin time of malaria parasitized pregnant women. METHOD A total of 90 pregnant women participated in the study, 60 of which were malaria positive and 30 of which were malaria negative. Participants were recruited from the antenatal Clinic of Specialist Hospital Sokoto, Nigeria. A structured interviewer-administered questionnaire was used to obtain some socio-demographic characteristics of subjects. Blood samples were collected in ethylene diamine tetra acetic acid and examined for malaria parasite and platelet count while citrated samples were used for the determination of some haemostatic parameters (prothrombin time and activated partial thromboplastin time). Data generated was analyzed using SPSS 25.0 statistical package. A p-value ⩽ 0.05 was considered significant in all statistical comparisons. RESULT There was a statistically significant decrease (p= 0.000) in the platelet counts of the parasitized subjects compared to the non-parasitized controls. We observed a significant prolongation on both the prothrombin time and activated partial thromboplastin time among the parasitized subjects compared to the non-parasitized controls (p= 0.000). CONCLUSION This study has shown that malaria in pregnancy causes a significant decrease in the platelet count and prolongation in the prothrombin (PT) and the activated partial thromboplastin time (APTT). There is need for the malaria and haemostatic parameters to be assayed routinely on pregnant women particularly those presenting to antenatal clinic with febrile illness.


Fruit morphology as taxonomic features in five varieties of capsicum annuum L. solanaceae
Daniel Andrawus Zhigila, Abdullahi Alanamu AbdulRahaman, Opeyemi Saheed Kolawole, and Felix A. Oladele
Hindawi Limited
Variations in the fruit morphological features of Capsicum annuum varieties were studied. Varieties studied include var. abbreviatum, var. annuum, var. accuminatum, var. grossum, and var. glabriusculum. The fruit morphology revealed attenuated fruit shape with rounded surfaces in var. glabriusculum, and cordate fruit shape with flexuous surface in var. annuum, abbreviatum and accuminatum. The fruit is a berry and may be green, yellow, or red when ripe. The fruit epidermal cell-wall patterns are polygonal in shape with straight and curved anticlinal walls in all the five varieties. The fruit of var. abbreviatum and var. grossum is trilocular, while that of var. accuminatum and annuum is bilocular, and that of var. glabriusculum is tetralocular. Capsicum annuum var. glabriusculum had the highest mean number of seeds (108.4) and var. annuum had the lowest number of seeds (41.3) per fruit. The fruit is conspicuously hollowed in var. glabriusculum, accuminatum, and annuum but inconspicuously hollowed in var. abbreviatum and var. grossum. These features are shown to be good taxonomic characters for delimiting the five varieties of Capsicum annuum.


Wood of gliricidia sepium as a potential source of dietary fiber
A.A. Abdulrahaman, O.O. Bamidele, and F.A. Oladele
National Library of Serbia
In recent years it has been established that several health problems common in developed societies are con- nected to a lack of dietary fiber content in the daily meal. Among such health hazards are excessive body weight and its secondary implications, such as atherosclerosis, cancers of the colon, hemorrhoids, appendicitis, colitis and diverticulosis. Therefore, due to the indispensable benefits of dietary fibers intake and the health hazards resulting from their deficiency, nutritional experts have come up with a number of new ideas for food recipes. One of these ideas is related to wood anatomy, i.e. addition of wood fiber to wheat flour to produce or bake breads of low caloric value and a high dietary fiber content. Intake by experimental rats of a feed-supplemented with insoluble wood fiber of Gliricidia sepium during four weeks revealed that wood fiber supplements were acceptable to the rats. There was no significant difference in the blood packed cell volume (PCV) between experimental and control animals. This result indicates that fiber intake did not have any side effect on the blood of experimental animals. Furthermore, incorporation of wood fibers into wheat flour did not adversely affect the physical and baking properties of bread. This study recommends use of the wood of G. sepium as a potential source of dietary fibers.


Stomatal complex types, stomatal density, and the stomatal index in some species of Dioscorea
A.A. Abdulrahaman, F.O. Egbedo, and F.A. Oladele
National Library of Serbia
Dioscorea alata L. has three stomatal complex types, namely, paracytic, anisocytic, and tetracytic stomata, with percentage frequency values of 50, 18, and 32, respectively. Dioscorea bulbifera has paracytic and anisocytic stomata, with percentage frequency values of 87.60 and 12.40, respectively. Dioscorea cayenensis has anisocytic stomata, with a percent?age frequency value of 100. Dioscorea dumetorum has tetracytic and paractytic stomata, with percentage frequency values of 91.05 and 8.95, respectively. Both D. esculenta and D. rotundata have paracytic stomata, with a percentage frequency of 100. The range of variation of stomatal density is from 10 (lowest value) in D. alata and D. dumentorum to 27 (highest value) in D. bulbifera. The stomatal index also varies, from 24 in D. alata to 47 in D. cayenensis. The size of stomata in all species is small, varying in length from 0.74 ?m in D. alata to 1.79 ?m in D. dumentorum. An indented dichotomous key based on stomatal features was constructed to distinguish and identify the species.

RECENT SCHOLAR PUBLICATIONS

Phylogenetic position of Nigerian species of Curcuma longa (Zingiberaceae) in the current infrageneric classification
BB Tiamiyu, AA Lateef, A Sagaya, KA Abdulkareem, BU Olayinka, ...
Fountain Journal of Natural and Applied Sciences 13 (1), 15 - 22 2024



New records of fungal endophytes from Unilorin Sugarcane plantation using internal transcribed spacer gene sequences
AA Lateef, T Garuba, KA Abdulkareem, BU Olayinka, GS Olahan, ...
Science World Journal 19 (4), 945-950 2024



Morphometric studies of accessions of Duranta erecta L. (Vebernaceae) complex in Nigeria: morphometric studies of Duranta erecta in Nigeria.
A Sagaya, AA Abdulrahaman
2023



Sustainable Agricultural Practices of Industrially Utilized Tropical Medicinal Plants
N Patel, S Patel, SB Adeyemi, AA AbdulRahaman, KS Olorunmaiye, ...
Sustainable Uses and Prospects of Medicinal Plants, 189-225 2023



Systematic implication of GC-MS analysis of secondary metabolites in Duranta erecta L. Forms in Nigeria
A Sagaya, AA Abdulrahaman
Sri Lankan Journal of Biology 8 (1) 2023



Morphometric Studies of Accessions of Duranta erecta L.(Vebernaceae) Complex in Nigeria
A SAGAYA, AA ABDULRAHAMAN
Borneo Journal of Resource Science and Technology 13 (1), 108-119 2023



Proposing a Nigerian botanical garden design with selected plant species for sustainability, development and ecosystem services
JO Alabi, OJ Joseph, LO Alamu, FA Oladele, AA AbdulRahaman
Nigerian Journal of Horticultural Science (NJHS), 27(2): 138 – 147 27 (2 2023



Authentication of some commercial teas in Ilorin, north-central, Nigeria
A Sagaya, AA AbdulRahaman, A Adewumi
Romania Journal of Biology – Plant Biology 68 (1-2), 41 - 49 2023



Wood preservative potentials of three plant species used locally in Nigeria
A Sagaya, AA AbdulRahaman, GS Olahan, SA Adeniran
Romania Journal of Biology – Plant Biology 67 (1-2), 47 - 63 2023



THE TINY GIANT OF THE UNSEEN THAT EXPLAINS THE SEEN
AA AbdulRahaman
The Library and Publication Committee, University of Ilorin, Ilorin, Nigeria 2023



Effects of soil pollution on the germination, growth, fruiting and leaf anatomy of Abelmoschus caillei (A Chev.) Stevels Malvaceae
A Sagaya, AA Abdulrahaman, PO Oluwanisola, SB Tsoho
Science World Journal 18 (1), 64-70 2023



ANATOMICAL BASIS FOR UNION COMPATIBILITY AND INCOMPATIBILITY OF BUDDING AND GRAFTING IN SOME ACCESSIONS OF ANACARDIUM OCCIDENTALE (ANACARDIACEAE).
OO ABINDE, AA ABDULRAHAMAN, AA AL SAHLI, SA ADENIRAN
Annals of West University of Timisoara: Series of Biology 25 (2) 2022



Molecular Characterization of Potential Crop Pathogens Associated with Weeds as Endophytes in Uniilorin Plantations, Nigeria
AA Lateef, T Garuba, KA Abdulkareem, BU Olayinka, GS Olahan, ...
Baghdad Science Journal 19 (6), 1201-1201 2022



Agro-technology of important medicinal plants: from farm to pharma
N Patel, S Patel, AA AbdulRahaman, R Krishnamurthy
Medicinal Plants for Cosmetics, Health and Diseases, 493-506 2022



Assessment of genetic biodervisty of Nigerian cashew (Anarcadium occidentale L.) accessions using morphological and anatomical traits
SB Tsoho, AA AbdulRahaman
Jewel Journal of Scientific Research (JJSR) 7 (1), 95 - 108 2022



Cluster Analysis and Tree Crown Characteristic Index of Some Selected Tree Species for Shade And Shelter
AA Alabi, J.O., Oladele, F.A. AbdulRahaman
International Journal of Phytofuels and Allied Sciences 10 (1), 24 - 36 2022



Biofuel: the green alternative
N Patel, S Patel, AA AbdulRahaman, R Krishnamurthy
Biofuel from Microbes and Plants, 1-21 2021



The use of microstructures in the authentication of powdered drug plants
AA Abdulrahaman, AA Al Sahli, AA Tinuola, SA Adeniran, A Sagaya
Bio-Research 19 (2), 1297-1305 2021



A numerical approach to the taxonomy of some species of the Subtribe Cassiinae in Nigeria
OS Kolawole, AA Abdulrahaman, EC Chukwuma, MA Jimoh
Webbia 76 (1), 97-108 2021



Antibacterial activity of Urena lobata against uropathogens
T Garuba, N Katrodiya, N Patel, S Patel, DP Rajani, SS Chettiar, ...
Nigerian Journal of Natural Products and Medicine 25 (1), 43-46 2021

MOST CITED SCHOLAR PUBLICATIONS

Traditional preparations and uses of maize in Nigeria
AA Abdulrahaman, OM Kolawole
Ethnobotanical Leaflets 2006 (1), 23 2006
Citations: 147



Fruit morphology as taxonomic features in five varieties of Capsicum annuum L. Solanaceae
DA Zhigila, AA AbdulRahaman, OS Kolawole, FA Oladele
Hindawi Publishing Corporation Journal of Botany 2014
Citations: 107



Stomatal complex types, size, density and index in some vegetable species in Nigeria
AA AbdulRahaman, FA Oladele
Nig J Bot 16, 144-150 2003
Citations: 41



Stomatal anatomy and transpiration rate in some afforestation tree species
MO Oyeleke, AA AbdulRahaman, FA Oladele
NISEB Journal 4 (2), 83-90 2004
Citations: 39



Diagnostic Significance of Leaf Epidermal Features in the Family Cucurbitaceae
AA AbdulRahaman, RA Oyedotun, FA Oladele
Insight Botany 1 (2), 22 - 27 2011
Citations: 36



Stomatal complex types and transpiration rates in some tropical tuber species
RO Saadu, AA Abdulrahaman, FA Oladele
African Journal of Plant Science 3 (5), 107-112 2009
Citations: 33



Effects of fungal filtrates on seed germination and leaf anatomy of maize seedlings (Zea mays L., Poaceae)
T Garuba, AA AbdulRahaman, GS Olahan, KA Abdulkareem, JE Amadi
Journal of Applied Sciences and Environmental Management 18 (4), 662-667 2014
Citations: 32



Stomatal complex types, stomatal density, and the stomatal index in some species of Dioscorea
AA Abdulrahaman, FO Egbedo, FA Oladele
Archives of Biological Sciences 61 (4), 847-851 2009
Citations: 32



Influence of cement dust pollution on leaf epidermal features of Pennisetum purpureum and Sida acuta
CO Ogunkunle, AA Abdulrahaman, PO Fatoba
Environmental and Experimental Biology 11 (1), 73-79 2013
Citations: 29



Stomata, trichomes and epidermal cells as diagnostic features in six species of genus Ocimum L.(Lamiaceae)
AA Abdulrahaman, FA Oladele
Nigerian Journal of Botany 18, 214-223 2005
Citations: 28



Stomatal features and humidification potentials of Borassus aethiopum, Oreodoxa regia and Cocos nucifera
AA Abdulrahaman, FA Oladele
African Journal of Plant Science 3 (4), 059-063 2009
Citations: 26



Traditional preparations and uses of groundnut in Nigeria.
AA Abdulrahaman, BU Olayinka, ZD Andrauwus, TA Aluko, MO Adebola, ...
Annals: Food Science & Technology 15 (1) 2014
Citations: 24



Response of trichomes to water stress in two species of Jatropha
AA Abdulrahaman, FA Oladele
Insight Botany 1 (2), 15 - 21 2011
Citations: 24



Surface sterilization of Ocimum seeds and tissues with biosynthesized nanosilver and its effects on callus induction
AA Adebomojo, AA AbdulRahaman
IOP conference series: materials science and engineering 805 (1), 012024 2020
Citations: 23



Ethnobotanical study of economic trees: uses of trees as timbers and fuelwoods in Ilorin Emirate of Kwara State, Nigeria
AA Abdulrahaman, OJ Fajemiroye, FA Oladele
Ethnobotanical leaflets 2006 (1), 13 2006
Citations: 22



Combined administration of Spondias mombin and Ficus exasperata leaf extracts stall Indomethacin-mediated gastric mucosal onslaught in rats.
S Saheed, SA Olarewaju, G Taofeeq, ST Olatunde, AA Alanamu
African journal of traditional, complementary and alternative medicines 12 2015
Citations: 20



Cooling effects and humidification potentials in relation to stomatal features in some shade plants
AA AbdulRahaman, BU Olayinka, M Haruna, BT Yussuf, ...
International Journal of Applied Science and Technology (IJAST) 3 (8), 138 – 152 2013
Citations: 19



Morphometric Study of Several Species of the Genus Jatropha Linn.(Euphorbiaceae)
AA Opeyemi Saheed KOLAWOLE, ABDULRAHAMAN, ...
Notulae Scientia Biologicae 8 (2), 211 - 215 2016
Citations: 18



Stomatal complex types, stomatal density and stomatal index in some Jatropha species L.(Euphorbiaceae)
AA Abdulrahaman, FA Oladele
Nigerian Journal of Pure and Applied Sciences 23, 2160-2163 2010
Citations: 17



Aeropalynological investigation of the University of Ilorin, Ilorin, Nigeria
A Abdulrahaman, OS Aruofor, T Garuba, OS Kolawole, GS Olahan, ...
Journal of Applied Sciences and Environmental Management 19 (1), 53-63 2015
Citations: 16

GRANT DETAILS

Grant Senate Research Grant: Ecotype of Vitellaria paradoxa
Grantor University of Ilorin, Ilorin, Nigeria
Date 2010 – 2011
Duration 12 months
Present status Completed

Grant TETFund Institution-Based Research Fund (IBRF-TETFund grant): Phytotosocialogical Survey and Characterization of Weeds and their Associated Fungi in Selected Plantations of University of Ilorin, Ilorin, Nigeria
Grantor Tertiary Education Trust Fund (TETFund)
Amount N1, 300, 000 (One Million Naira, Three Hundred Thousand Naira only)
Date IBRF Award of 2016 – 2017
Duration 12 months (2018 – 2019)
Present status Completed

RESEARCH OUTPUTS (PATENTS, SOFTWARE, PUBLICATIONS, PRODUCTS)

Computerized System for Identification of some Savanna Tree Species in Nigeria NG/P/2010/336