Browsing by Author "Sagaya, A"

Now showing 1 - 4 of 4
  • Item
    and morpho-anatomical deformation in Corchorus olitorius and Senna occidentalis correlating with industrial effluent contaminating soil
    (Society for the Conservation of Phytofuels and Sciences, 2020) Sagaya, A; AbdulRahaman, AA; Adeniran, SA; Yusuf, AM; Oladele, FA
    Environmental pollution from food or related industries via effluent discharge is a global threat to plants and animals and may ultimately threaten the quality of human. The present study aimed at evaluating the dangerous effect of industrial effluent on the toxicity and morpho-anatomical deformations of Corchorus olitorius and Senna occidentalis. The study was a split plot complete randomized design with two factors, each comprising of four treatments and three replicates which lasted for a period of three month. Treatment details include T0 = Tap water (control), T1= 25% pollutant + 75% tap water, T2= 50% pollutant + 50% tap water, T3= 75% pollutant + 25% tap water, T4= 100% pollutant. The result showed that a significant concentration of nickel, copper, lead, cadmium, chromium and iron were detected in the pharmaceutical effluent while copper, lead, cadmium, chromium, iron and mercury were detected in the soap and detergents effluent. A significant inhibition was observed at 100% concentration of the seedling growth parameters (stem length, leaf size, number of leaves and root length) in both Corchorus olitorius and Senna occidentalis while a significant reduction in leaf size was observed with increasing concentration of the industrial effluents. Anatomically, there was no difference in the epidermal cell size and the effluents increased some stomatal parameters such as stomatal density at 25% and 50% concentrations and decrease from 75% and 100% effluent concentration. It also increases the stomatal index and size at high or low concentrations. This study has shown that the two industrial effluents contained some harmful pollutants which are dangerous to life of the plants, adversely affected germination, growth and development at higher concentrations than lower concetrations, they also modified several anatomical structure in the leaf epidermis of Corchorus olitorius and Senna occidentalis
  • Item
    Bioclimatic Modeling of Current Geographic Distribution and Future Range Shifts of Selected Edible Mushrooms in Nigeria
    (Faculty of Life Sciences, Federal University Dutsin-Ma, Nigeria, 2024-03-31) Tiamiyu, B.B; Lateef ,A.A; Ajadi, I; Adeyemi, S.B; Owolabi, P.O; Sagaya, A; Abdulsalam, M; Abdulkareem, K.A; Mustapha, O.T
    Mushrooms, as part of the fungal kingdom, are essential components in nutrient cycling and carbon retention in terrestrial ecosystems. Monitoring the impact of climate change on fungi in their natural habitat is difficult because most species reside below the soil surface. As a result of a few reported occurrence records in Nigeria, we model the species distribution of two edible mushrooms, namely, Pleurotus ostreatus and Macrolepiota procera, using MaxEnt to predict the potential future range shifts under different climate change scenarios. In this study, we have calculated high model performances based on the Area under Curve (AUC) values generated (0.778-0.873). Using this modeling approach, the two species were predicted to have an expansion of their localized fundamental niches, pointing to the influence of precipitation as an important macroclimatic predictor. Highly suitable habitats for the two species were discovered primarily in Southern Nigeria, with less habitat suitability in the North-central Zone in 2050. The predicted models in this study do not tell missing geographical information, which could be achieved through citizen science for occurrence records and biodiversity conservation. However, they may be used to explore potentialities, such as understanding the possible distribution patterns of the two mushroom species in Nigeria. This can serve as a useful baseline to enhance the utilization and conservation efforts of these macrofungi as a result of climate change, habitat loss, and rapid urbanization.
  • Item
    Morphological responses of Anacardium occidentale L. (Anacardiaceae) to lead (Pb). International Journal of Phytofuels and Allied Sciences
    (Society for the Conservation of Phytofuels and Sciences, 2020) AbdulRahaman, AA; Sagaya, A; Sholarin, AA; Adeniran, SA; Al Sahli, AA; Alaraidh, IA
    Cashew plant (Anacardium occidentale L.) seeds were pretreated with concentrated tetraoxosulphate (IV) acid (H2SO4) in three concentrations: 5%, 10% and 20% in 5, 15 and 30 minutes each and were grown in lead (Pb) (Lead (II) acetate) Pb(C2H3O2)2 contaminated soil (7 kg) in three concentrations 1000 ppm, 3000 ppm and 5000 ppm. Seed emergence was appreciated in 5% acid concentration and depressed in 10% and 20%. However, the effect of Pb was significantly observed as it delayed seed emergence in the control plants. Plant height, number of leaves and stem girth increased significantly across the months while the leaf area was depressed. The total Pb content was determined using Atomic Adsorption Spectrophotometry (AAS). The present result showed higher root Pb compared to shoot Pb, indicating limited mobility, once absorbed by the roots and that its accumulation and translocation is concentration dependent in relation to the pretreatment time interval. The result showed that the plant demonstrated a physiological response to Pb pollution, which suggests that cashew plants are indicators of heavy metal accumulation and the effect on the environment.
  • Item
    Phylogenetic Position of Nigerian Species of Curcuma longa (Zingiberaceae) in the Current Infrageneric Classification
    (The College of Natural and Applied Sciences, Fountain University, Osogbo, Nigeria, 2024) Tiamiyu, B.B; Lateef, A.A; Sagaya, A; Abdulkareem, K.A; Olayinka, B.U; Ayinla, A; Adeyemi, S.B; Amenu, S.G; Abdulrahaman, A.A; Mustapha, O.T
    Curcuma longa L. (commonly known as Tumeric) is the only species of the genus Curcuma found in Nigeria. It is of great economic importance to Nigeria, Africa, Asia, and other parts of the world, where it is widely used for ornamental and medicinal purposes, and as spices in food and beverages. However, the phylogenetic placement of the turmeric plant (C. longa) in Nigeria is far from being fully resolved, hence the need for this study. The rhizomes of turmeric were collected at the Forestry Research Institute of Nigeria, Ibadan, Oyo state. Genomic DNA was extracted, followed by the amplification of the ITS and psbA-trnH regions. Phylogenetic analysis was conducted using the Maximum likelihood method. The result resolved the phylogenetic position of Nigerian species and supported existing subgenera classification into three clades, all with high bootstrap support for the three clades. The result of this study supports the subgenera classification of the genus and further reveals the phylogenetic position of C. longa.