Abdullahi Alanamu AbdulRahaman
@unilorin.edu.ng
Professor, Faculty of Life Sciences
University of Ilorin
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
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
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.
Nikita Patel, Swetal Patel, Abdullahi A. AbdulRahaman, and Ramar Krishnamurthy
CRC Press
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.
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.
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.
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.
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.
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.
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
MOST CITED SCHOLAR PUBLICATIONS
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