Articles: Department of Biological Sciences: Recent submissions

Now showing items 41-60 of 285

Mutations and Epidemiology of SARS-CoV-2 Compared to Selected Corona Viruses during the First Six Months of the COVID-19 Pandemic: A Review

Nzivo, Mirriam M.; Budambula, Nancy (2021-06)

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the causative agent of coronavirus (CoV) disease 2019 (COVID-19). This study compared the genome, mutations, and infectivity/ transmissibility of SARS-CoV-2 ...
Molecular epidemiology of Brucella species in mixed livestock‑human ecosystems in Kenya

Akoko, James M.; Pelle, Roger; Lukambagire, AbdulHamid S.; Machuka, Eunice M.; Nthiwa, Daniel M.; Mathew, Coletha; Fèvre, Eric M.; Bett, Bernard; Cook, Elizabeth A. J.; Othero, Doreen; Bonfoh, Bassirou; Kazwala, Rudovick R.; Shirima, Gabriel; Schelling, Esther; Halliday, Jo E. B.; Ouma, Collins (Nature, 2021-03)

Brucellosis, caused by several species of the genus Brucella, is a zoonotic disease that afects humans and animal species worldwide. Information on the Brucella species circulating in diferent hosts in Kenya is largely ...
Free-living nematode assemblages associated with maize residues and their ecological significance

Karuri, Hannah W.; Maina, Samuel; Nyoike, Rossa N. (2021)

Return of plant residues to the soil is a sustainable way of enhancing plant growth, health, and levels of soil quality. In Kenya, maize plant residues are the most commonly returned plant material in many agro-ecosystems. ...
Serological evidence of single and mixed infections of Rift Valley fever virus, Brucella spp. and Coxiella burnetii in dromedary camels in Kenya

Nthiwa, Daniel M. (PLOS, 2021-03)

Camels are increasingly becoming the livestock of choice for pastoralists reeling from effects of climate change in semi-arid and arid parts of Kenya. As the population of camels rises, better understanding of their role ...
Short communication: Efficacy of two commercial disinfectants on Paenibacillus larvae spores

Kiriamburi, Joseph; Muturi, Jamleck; Mugweru, Julius; Forsgren, Eva; Nilsson, Anna (2021-03)

Paenibacillus larvae is a spore-forming bacterium causing American foulbrood (AFB) in honey bee larvae. The remains of a diseased larva contains billions of extremely resilient P. larvae spores viable for decades. Burning ...
Phenomic characterization of Crotalaria germplasm for crop improvement

Muli, Joshua Kiilu; Neondo, Johnstone O.; Kamau, Peter K.; Odari, Eddy; Budambula, Nancy (Cabi, 2021-03)

Background: Diversifcation of global food systems through exploration of traditional varieties and wild edible plant species is a focal mitigation strategy for food security worldwide. The present study determined the ...
Phenotypic Diversity of Doum Palm (Hyphaene compressa), a Semi-Domesticated Palm in the Arid and Semi-Arid Regions of Kenya

Budambula, Nancy L. M.; Neondo, Johnstone; Gituru, Robert; Mweu, Cecilia; Omire, Agnes (Hindawi, 2020-12-29)

Hyphaene compressa is an economically important palm in Africa. Despite its significant role in the livelihoods of rural communities, the diversity of doum palm is poorly documented and studied. In addition, it has no ...
Isolation and Characterization of Bacteria from Lakes Olbolosat and Oloiden, Kenya

Kiama, Catherine Wachera; Njire, Moses Mucugi; Kambura, Anne Kelly; Matiru, Viviene Njeri; Wafula, Eliud Nalianya; Mugweru, Julius Ndirangu; Mugweru, Julius Ndirangu (Academic journals, 2020)

There is still unexplored reservoir of microorganisms from sediments and water within Lakes Olbolosat and Oloiden using culture dependent technique. The current study compares bacterial diversity within Lake Olbolosat a ...
The Contribution of Occult Precipitation to Nutrient Deposition on the West Coast of South Africa

Nyaga, Justine M.; Neff, Jason C.; Cramer, Michael D. (2015-05-27)

The Strandveld mediterranean-ecosystem of the west coast of South Africa supports floristically diverse vegetation growing on mostly nutrient-poor aeolian sands and extending from the Atlantic Ocean tens of kilometers ...
SPEI-based spatial and temporal evaluation of drought in Somalia

Nyaga, Justine M.; Musei, Sylus Kipngeno; Dubow, Abdi Zeila (Elsevier, 2020-09-06)

Somalia is one of the most drought prone countries both in Africa and globally. Drought events usually develop gradually unnoticed, causing tremendous effects on both agriculture and environment. This study evaluated ...
Temporal variation in physico-chemical characteristics, phytoplankton composition and biomass in Lake Solai, Kenya

Nyaga, Justine M.; Koskei, Eunice C.; Kotut, Kiplagat; Oduor, Steve Omondi (2019-10-20)

The physico-chemical properties and phytoplankton community structure of Lake Solai were investigated between April 2018 and August 2018. Water temperature, conductivity (EC), dissolved oxygen (DO) content and pH were ...
Low foristic richness of afro‐alpine vegetation of Mount Kenya is related to its small area

Nyaga, Justine M.; Onipchenko, Vladimir G.; Kopylova, Natalia A.; Kipkeev, Alii M.; Elumeeva, Tatiana G.; Azovsky, Andrei; Dudov, Sergei V. (Springer, 2019-10-29)

Diversity patterns of tropical alpine vegetation is poorly studied. We estimated vascular plant floristic richness for two typical afro-alpine communities in Mount Kenya using a series of nested plots sized from 25 to 100 ...
Response of Selected Kenyan Rice Cultivars to Infection by Root Knot Nematode (Meloidogyne incognita)

Nyaga, Justine M.; Namu, John; Alakonya, Amos; Karuri, Hannah; Masanga, Joel; Njeri, Editah (Springer, 2019-03-22)

Meloidogyne incognita causes huge yield losses in rice which is the third most important cereal crop in Kenya. The aim of this study was to identify M. incognita-resistant rice cultivars from Kenya and relate the responses ...
In vitro anti-cancer efficacy and phyto-chemical screening of solvent extracts of Kigelia africana (Lam.) Benth

Nyaga, Justine M.; Mukavi, Justus Wambua; Mayeku, Philip Wafula; Kituyi, Sarah Naulikha (Cell press, 2021-01-25)

Background and objectives: Kigelia africana is a medicinal plant growing naturally in many parts of Africa. In Kenya, a water concoction of the plant is used to treat breast and prostate cancers. Laboratory data on its ...
Precision agriculture research in sub‑Saharan Africa countries a systematic map

Nyaga, Justine M.; Onyango, Cecilia M.; Wetterlind, Johanna; Söderström, Mats (Springer, 2021-01-15)

Precision agriculture (PA) has a huge potential for growth in sub-Saharan Africa (SSA), but it faces a number of social-economic and technological challenges. This study sought to map existing PA research and application ...
Anti-inflammatory norhopanes from the root bark of Fagaropsis angolensis (Engl.) H.M.Gardner

Nyaga, Justine M.; Mukavia, Justus; Omosa, Leonidah Kerubo; Ngnitedemb, Vaderament Nchiozem; Omoled, Ruth; Bitchagnoc, Gabin Thierry M.; Spitellere, Michael (Elsevier, 2020-06-17)

Two new norhopane derivatives namely 3β,6β,22-trihydroxy-7β,11α-di[(4-hydroxybenzoyl)oxy]-21αH-24- norhopa-4(23)-ene (1) and 3β,6β,22-trihydroxy-7β-[(4-hydroxybenzoyl)oxy]-21αH-24-norhopa-4(23)-ene (2) together with two ...
Precision Agriculture for Resource Use Efficiency in Smallholder Farming Systems in Sub-Saharan Africa: A Systematic Review

Nyaga, Justine M.; Onyango, Cecilia M.; Wetterlind, Johanna; Söderström, Mats; Piikki, Kristin (MDPI, 2021-01-21)

Opportunities exist for adoption of precision agriculture technologies in all parts of the world. The form of precision agriculture may vary from region to region depending on technologies available, knowledge levels and ...
International Journal of Environment and Climate Change

Nyaga, Justine M.; Nyaga, Samuel K.; Gathungu, Geofrey K.; Njeru, Jafford R. (2020-12-21)

Africa is under pressure from climate stresses and is highly vulnerable to the impacts of climate change. In Kenya, agriculture is the backbone of the economy making it an important contributor to food security of rural ...
Genetic diversity and use of African indigenous vegetables especially slender leaf

Muli, Joshua K.; Neondo, Johnstone O.; Kamau, Peter K.; Budambula, Nancy (Taylor and Francis, 2020-10)

African indigenous (AIVs), and traditional, vegetables play a role in food security. This review examines distribution, use, diversity, and techniques used to study AIVs with special interest on Crotalaria ...
Nematode metabolic footprints, ecological and functional indices in tropical maize-beans agro-ecosystems under different farming practices

Maina, Samuel N.; Karuri, Hannah W.; Ng'endo, Rossa N. (Elsevier, 2020-10)

Maize and beans contribute significantly to food security in Kenya. Farming practices used in production of these crops may affect nematode community assemblages and influence agricultural productivity. Information on ...

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