Pusat Pengajian Sains Kajihayat - Tesis

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    Characterization Of CTP Synthase In Zebrafish (Danio Rerio)
    (2019-08)
    Abdul Wahab, Nurul Wahidah
    CTPS is an enzyme that catalyzes the synthesis of cytidine triphosphate (CTP), one of the four basic nucleotide triphosphates that make up DNA and RNA. CTPS dysregulation has been implicated in many different diseases and cancers. It was also shown previously that CTPS can form filamentous structures called cytoophidia. This structure was found on yeast, fruit flies and human. Nevertheless the mechanism behind cytoophidia formation is still vague. To date, there are no in depth studies yet on characterizing CTPS on Danio rerio (zebrafish) and as there are two CTPS genes in zebrafish i.e ctpsla and ctpslb utilizing zebrafish as model organism can further help to understand the CTPS and its cytoophidia. In this studies, the antibody staining results shows that in developing embryos, CTPS is concentrated on the pronephric duct area and the notochord at the end tail area.
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    Fish Diversity And Population At Selected Feeder Rivers To Bukit Merah Reservoir, Perak
    (2019-08)
    Mohammad, Mohd Syaiful
    A study of fish diversity and in-situ water parameter was carried out in five selected river feeders with eight sampling stations in Bukit Merah Reservoir (BMR) from November 2012 until Jan 2014 for 14 month of time period. The study area covers the upper and lower reaches of river feeders to Bukit Merah Reservoir. The overall water quality in five selected river feeders of Bukit Merah Reservoir can be classified under Class II (selected water parameters). A total of 1946 individuals of fish were caught using cast net with 42 species belonging to 16 families recorded in this study. Cyprinidae are the most dominant fish species recorded in this study with the composition of 38.1% followed by Bagridae (11.9%) and Channidae (9.5%).
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    Cyanobacterial Diversity In Selected Tropical And Polar Environments
    (2019-04)
    Abdul Rahman, Nur Fadzliana
    Cyanobacteria are the most ancient and widespread group of photosynthetic prokaryotes and had a major role in the evolution of the plant kingdom and Earth’s atmosphere. They are primary producers in a wide variety of habitats and are able to thrive in harsh environments. This study explored the cyanobacterial communities in sediment and soil samples collected from selected areas from Antarctic (Browning Peninsula, Dee Island, Greenwich Island and Reeve Hill), Arctic (Kvartsitsletta and Polish Polar Station) and Tropical (Air Terjun River, Air Itam River, Dondang River, Jelutong River and Pinang River) regions, by identifying taxa via 16S rRNA gene amplicon sequence data. 16S rRNA gene amplicons generated from 11 samples were sequenced using illumina Miseq, with the targeted V3 and V4 regions yielding approximately 1 million reads per sample. East Antarctica (Browning Peninsula and Reeve Hill) recorded nine genera of cyanobacteria and west Antarctica (Dee Island and Greenwich Island) recorded seven genera. The two Arctic sampling sites recorded the lowest number of genera, five.
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    Mikotoksin Fusarium Nygamai Burgess & Trimboli, Penyebab Penyakit Besar Rabu Pada Padi
    (1993-12)
    Sazlina Binti Abdul Kader
    Fusarium nygamai (kultur No. P27SRP) yang digunakan dalam eksperimen ini, telah dipencil daripada batang padi yang menunjukkan gejala penyakit besar rabu di Bumbung Lima, Pulau Pinang. Kultur monokonidium F. nygamai diinokulasi pada beras steril dan dieram selama 1-4 minggu. Ekstrak mikotoksin kasar (EMK) yang dihasilkan oleh patogen setiap minggu dalam kultur beras tersebut dibioasai pada larva udang (Artemia salina).
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    Relationship Of Oil Palm Inflorescence And Evaluation Of Several Insecticides On Tirathaba Mundella Walker (Lepidoptera: Pyralidae) And Elaeidobius Kamerunicus Faust (Coleoptera: Curcul1onidae)
    (2017-07)
    Shukor, Muhammad Idrus
    Oil palm plant, (Elaies guineensis Jacq.) from family Palmae was originated from the West Africa and was brought into Malaysia by British Colony. It is now known as the “golden crop” and have become one of the most important oil producing plants in the world. Oil palm inflorescences and bunches are important diet for two insects, the fruit bunch moth, Tirathaba mundella and the pollinating weevil, Elaeidobius kamerunicus. T. mundella cause 50 % loses of fresh fruit bunch (FFB) while E. kamerunicus is an important pollinator. The objectives of this study are: (1) to find the relationship between the oil palm inflorescences and bunches stage with T. mundella and E. kamerunicus, (2) to find the efficacy and residual effect of several insecticides towards the T. mundella population and (3) to determine the effect of several insecticides towards the E. kamerunicus population.