African Journal of

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12412

AJB Articles

In vitro regeneration of Tripsacum laxum Nash

September 2022

Tripsacum laxum Nash (Guatemala grass) is widely used globally as a forage crop. Its strong roots and long period of growth and utilization allow it to be harvested for many years, and given its high yield, high nutritional value, and good taste. Here the peduncles of T. laxum Nash were used as explants to induce shoots and then efficient shoot proliferation and regeneration system were established for the first time....

Author(s): Pang Jinhui, Xiong Yuping, Wu Kunlin, da Silva Jaime A. Teixeira, Zhang Xinhua, Li Yuan, Zeng Songjun and Ma Guohua

Effects of 2-chlorophenol and 2,4-dichlorophenol on mitotic chromosomes and nucleic acid content using Allium cepa and Vicia faba assays

September 2022

Chlorophenols are compounds used as intermediaries in manufacturing agricultural pesticides. Despite the efficiency on their targets, they are considered as environmental pollutant substances. This study assessed two chlorophenol substances, 2-chlorophenol and 2,4-dichlorophenol (2-CP, 2,4-DCP) for their cytogenetic, genotoxic, and nucleic acid content affects using Allium cepa and Vicia faba assay....


Prevalence of drug resistance and genetic characterization of Mycobacterium tuberculosis complex strains from pulmonary tuberculosis patients co-infected with malaria at Jamot Hospital in Yaoundé

September 2022

Tuberculosis (TB) is caused by the Mycobacterium tuberculosis complex (MTBC) and remains a major global public health concern. This study aimed to determine the prevalence of drug resistance and the genetic variation among MTBC population in pulmonary tuberculosis patients co-infected with Malaria at Jamot Hospital in Yaoundé-Cameroon. This was a 12 months cross-sectional study that enrolled 336 participants aged...

Author(s): Tiani Lionel Ulrich,, Ambassa Axel Cyriaque, Assam Jean Paul Assam, Andoseh Genevieve, Zeukeng Francis, Tchinda Cedric Fossi, Tsasse Martine Augusta Flore, Nkah Numfor Leonard, Gonsu Kamga Hortense, Kouanfack Charles, Pefura Yone Eric Walter, Djuidje Ngounoue Marceline, Bigoga Jude Daiga, Ntoumi Francine, and Beng Véronique Penlap,

Studies of Salvia officinalis leaf extract on some biochemical parameters in rats induced with overdosed-tramadol

August 2022

The aim of the study was to evaluate the effect of Salvia officinalis leaf extract in overdosed-tramadol induced rats.  Standard methods of analysis were used for the study. Fifty rats were divided into Group A (Control) - feed and water only, Group B-induced with tramadol at 50 mg/kg body weight, Group C-induced with tramadol + 150 mg/kg of S. officinalis leaf extract, Group D-tramadol + 300 mg/kg S. officinalis...

Author(s): Mokogwu A. T. H., Adjekuko C. O., Oshilonyah H. U. and Avwioro O. G.

Rhizosphere competence and abiotic stress tolerance of commercially sold Pseudomonas fluorescens biofertilizers: Implications for their bioremediation potential

August 2022

Microbial remediation research has become front and centre gaining momentum for numerous environmental biotechnological applications. Agronomical bioproducts have been widely used for many years and their availability, low costs and safety makes them potentially suitable for alternative biotechnological applications, specifically environmental remediation. In this study, the commercially available biofertilizer,...

Author(s): Schapira Jessica, Rumbold Karl, Bolhar Robert, Master Sharad and Le Bras Loic

The value-chain of cotton industry in Kenya with focus on product stewardship for timely provision of certified quality Hybrid Bt cotton seeds to farmers

August 2022

For there to be sustainable revival of Kenya’s Cotton Industry, its cotton-value needs to be analyzed, there is need to identify its weak points and implement measures to ameliorate its key constraints. Various authors have developed and analyzed the value-chain of the Cotton Industry in Kenya. This paper reviews important components of the value-chain focusing on strengthening the supply of safe, adequate and...

Author(s): Obukosia Silas D., Maredia Karimbhai, Kedisso Endale Gebre, Guenthner Joe and Ouédraogo Jeremy Tinga

Association of serum MMP-9 with recurrence in patients with resectable esophageal squamous cell carcinoma after chemotherapy or concurrent radiotherapy

August 2022

Esophagectomy is a common standard treatment of localized disease. However, local recurrence frequently occurs in patients with advanced esophageal squamous cell carcinoma (ESCC) after operation, resulting in the need for using biomarkers to evaluate recurrence in patients with advanced ESCC during postoperative therapies. This study examined serum matrix metalloproteinase-9 (MMP-9) as a prognosis factor in recurrent...

Author(s): Xu Heng, Xu Xuyun, Du Mengjie, Ma Rong, Wang Qiang and Du Aonan

Assessment of Exserohilum turcicum using molecular markers for sustainable maize production in Tanzania

August 2022

The Exserohilum turcicum fungus causes the Northern leaf blight (NLB) of maize all over the world. In Tanzania, this disease is considered as a major foliar disease with yield losses of 23.9 to 62.8%. To understand the genetic variations of E. turcicum from maize fields in Tanzania, a survey was conducted in four regions, including Morogoro, Iringa, Njombe, and Mbeya. Leaf samples were collected from diseased plants...

Author(s): Onwunali Martin R. O., Mabagal Robert B. and Massawe Deogracious P.

Fatty acid profiles in Chinese Maiwa yak milk across the lactation cycle

July 2022

An experiment was conducted to determine fatty acid (FA) pro?les in Chinese Maiwa yak milk across the lactation cycle. Sixty-one healthy, similar weight, 4-7 years old, 3-6 parity Maiwa yaks with unrelated background were selected randomly from Hongyuan County, Sichuan province, in southwest of China (with the altitude over 3500 m). The yaks graze on natural pasture all year around without irrigation, fertilizer, or...

Author(s): Xie J. J., Zhu J. J., Ran R., and Jiang M. F.,

Analgesic and anti-inflammatory activities of propolis obtained from Gboko, Nigeria

July 2022

The use of propolis for the treatment of various ailments in which inflammation and pain is involved is cross-cultural. This report was designed to investigate the analgesic and anti-inflammatory activities of propolis obtained from Gboko, Benue State using hexane, ethyl acetate, and ethanol solvents. Propolis sample obtained from beehives was homogenized, extracted and dried at 40°C. The dry extract was prepared in...

Author(s): IPAV Selumun Solomon, IGOLI John Ogbaji, TOR-ANYIIN Terrumun Amom and ANYAM John Vershima

Influence of arbuscular mycorrhizal fungi and phosphorous on the growth, nutrient uptake, chlorophyll content and some metabolites of eggplant (Solanum melongena L. VAR. Yalo) under saline conditions

July 2022

The effects of arbuscular mycorrhizal fungi (AMF) and phosphorous (P) on the growth, nutrient uptake, chlorophyll content and some metabolites of eggplant (Solanum melongena L. VAR. Yalo)  were determined under saline conditions,  through a greenhouse experiment conducted for six weeks. Seedlings were planted in polythene bags previously filled with sand, 1 g of P and 50 g of AMF for all concentrations (0, 50,...

Author(s): Nouck Alphonse Ervé, Shang Erica Wiraghan, Muyang Rosaline Fosah, Choula Fridolin, Thiaze Ifouet Alice, Fotso and Taffouo Victor Desiré

Effect of different concentrations of plant growth hormones on callus induction and regeneration of Shea tree (Vitellaria paradoxa)

July 2022

The slow natural regeneration pattern of the Shea tree due to the long gestation period and intense harvest has limited the domestication and genetic improvement of this tree. These limitations have necessitated the need for an alternative method of conserving the Shea tree outside the natural habitat. The propagation of the Shea tree by the in-vitro clonal technique presents such an alternative method. The purpose of...

Author(s): Aguwa  I., Gana A. S., Salaudeen M. T., Tolorunse K. D., Nmadu J. N., Baba K. M., Osunde Z. D. and Okafor J. O.

Synthesis of silver nanoparticles using crude leaf extracts of Acacia nilotica, Azadirachta indica, Carissa spinarum, Melia azedarach, Senna didymobotrya and Warburgia ugandensis, and their antifungal activity against Sporisorium scitamineum

July 2022

Bio-synthesised silver nanoparticles are effective in controlling several micro-organisms. They are correspondingly environmentally friendly, affordable, and easy to synthesise when compared with chemically synthesised silver nanoparticles. This study investigated the efficacy of biosynthesized silver nanoparticles against the fungus Sporisorium scitamineum, the causal agent of sugarcane smut. The reduction of silver...

Author(s): Nkhabindze Bongani Z., Wanyika Harrison N., Earnshaw Diana M. and Ateka Elijah M.,

The effect of substrates on the growth, yield, nutritional and phytochemical components of Pleurotus ostreatus supplemented with four medicinal plants

June 2022

The aim of this study was to investigate the effect of substrates on the growth, yield, nutritional, and medicinal value of Pleurotus ostreatus supplemented with four medicinal plants. A completely randomized block design was laid out with 4 treatments replicated 4 times with and without medicinal plants. T1 (sawdust), T2 (sawdust + corncobs), T3 (palm cones), and T4 (elephant stalks) were the treatments used. Croton...

Author(s): Nsoh Sirri Vera, Tacham Walter Ndam, Ngwang Mercy Veyeh and Kinge Tonjock Rosemary

Assessment of genetic diversity of local rice accessions cultivated in Guinea revealed by SNPs markers, and identification of markers associated with tolerance to iron toxicity

June 2022

Rice is the staple food in the Republic of Guinea. However, its production is seriously hampered by iron toxicity. The fight against this stress necessarily involves the search for tolerant or resistant varieties. The study aims to determine quantitative trait locus (QTL) associated with tolerance to iron toxicity and to identify genotypes tolerant or resistant to iron toxicity. Thus, 90 local rice accessions collected...

Author(s): Barry Mamadou Laho, Sawadogo Nerbéwendé, Ouédraogo Mahamadi Hamed, Sawadogo Tégawende Alphonse, Kaboré Boukaré, Camara Sawa, Barry Mamadou Billo, Bationo-Kando Pauline and Sawadogo Mahamadou

Modulation of ethoxyresorufin-o-deethylase, benzoxyresorufin-o-dealkylase and pentoxyresorufin-o-dealkylase expression by African walnut seeds lipid extract in 3-methylcholanthrene induced breast cancer in Wistar rats

June 2022

Breast cancer is prevalent among women worldwide. African walnut (Tetracarpidium conophorum) seeds extract have been shown to have medicinal properties. This study is to determine the effects of feeding T. conophorum seeds lipid extract on 3-methylcholanthrene (MC) induced breast carcinogenesis and the expression of ethoxyresorufin-O-deethylase (CYP1A1), benzoxyresorufin-O-dealkylase (CYP1B1) and...

Author(s): Uhunmwangho Esosa Samuel, Oyiborhoro Onoriode and Oluwaseun Olafusi Celestina 

The role of N-terminal module of PhyB in modulating root and hypocotyl growth length in Arabidopsis

June 2022

Phytochrome belongs to red/far-red light family of photoreceptors. It exists in two spectral forms named red light absorbing form (Pr), said to be the inactive form and far-red light absorbing form (Pfr) which is the active form. This photoreceptor is structurally divided into two modules- the amino acid (N-) terminal photosensory module and caboxylic acid (C-) terminal His kinase-like catalytic output module. Five...

Author(s): Njimona Ibrahim, and Baluška František

The effect of foliar application of zinc oxide nanoparticles and Moringa oleifera leaf extract on growth, biochemical parameters and in promoting salt stress tolerance in faba bean

June 2022

Salinity is major abiotic stress limiting plant growth worldwide. Plant adaptation to salinity stress involves diverse physiological and metabolic pathways. In this study, we assessed the effects of foliar application of zinc oxide nanoparticles (ZnONPs) and Moringa leaf extract (MLE) on salt tolerance in faba beans (cultivar, Sakha 4). Morphological, chemical, and biochemical parameters of plants grown under saline...

Author(s): Sherif M. Ragab, Losenge Turoop, Steven Runo, and Steven Nyanjom,

Characterization and antimicrobial activities of lactic acid bacteria isolated from selected Nigerian traditional fermented foods

May 2022

For production and preservation of traditional fermented foods, the genera, lactic acid bacteria (LAB) have been used. This study was carried out to determine the characteristics and the antimicrobial activities of lactic acid bacteria isolated from selected Nigerian traditional fermented foods. Changes in pH and titratable acidity (TA) of the samples were investigated for a period of four days (96 h). Eleven tentative...

Author(s): Ohaegbu Chinedu Godspower, Ngene Anayochukwu Chibuike, Asuquo Unyime Inyang, Coulthard Oluwatoyin Debby and Nwachukwu Ejikeme

Preliminary verification of the adoption status of some yam (Dioscorea rotundata and Dioscorea alata) varieties in Nigeria using microsatellites markers

May 2022

The persistent low yield and farmers’ preference of their traditional yam varieties over the improved varieties necessitated this study to verify the adoption status of the released varieties in Nigeria. A total of 48 accessions of white yam (Dioscorea rotundata) were sampled from six states of Ebonyi, Enugu, Benue, Kogi, Nassarawa and Oyo within Nigeria yam-belt and were genotyped for relatedness to four released...

Author(s): Nwogha J. S., Obidiegwu J. E., Okereke R. N, Bhattacharjee R. and Oselebe H. O.

New technique for improving fish packaging hygiene and prolonged shelf life

May 2022

Zinc oxide nanoparticles (ZnO NPs) have received great attention due to their optical, physical, and antimicrobial properties. They have toxic effect against microbes without any effect on mammalians cells. They are used in several applications including extending the shelf life of food. The study aims to determine the minimum inhibitory concentrations of ZnO NPs against different aquaculture fish fungus species and...

Author(s): Elsharawy Nagwa T., Baabdullah Wafa A. and Alkaladi Ali

Commercialization of genetically modified crops in Africa: Opportunities and challenges

May 2022

Genetically modified (GM) crops offer potential for enhancing agricultural productivity for smallholder farmers in Africa. After nearly three decades of research and development collaboration and regulatory capacity strengthening, several countries in Sub-Saharan Africa (SSA) are moving towards commercializing GM crops for the benefit of smallholder farmers. South Africa approved genetically modified (GM) cotton, maize...

Author(s): Endale Gebre Kedisso, Karim Maredia, Joseph Guenthner and Muffy Koch

Efficient callus-mediated system for commercial production of sugarcane (Saccharum spp.) planting material in Ghana

May 2022

An efficient callus-mediated regeneration system was developed for high-frequency production of planting material of sugarcane genotypes LSC and B36464. Spindle leaf segments cultured on MS basal medium supplemented with 2,4-D or picloram at 1, 2, 3 or 4 mg/L resulted in callus induction. Callus induction was higher on 2,4-D amended medium compared to picloram. Nevertheless, for both auxins, callus induction improved...

Author(s): Azu Elaine, Elegba Wilfred, Asare Abigail Tweneboah, Asare Kwame, Akama Christian, Asare Patience, Annor Clement, Azure Samuel and Danso Kenneth

Physiological performance of heat stressed growing rabbits fed diets supplemented with vitamin anti-oxidants and bicarbonate buffers

April 2022

The aim of the study was to evaluate the physiological performance of heat stressed growing rabbits fed diets supplemented with vitamin anti-oxidants and bicarbonate buffers. A total of thirty (30) growing rabbits (New Zealand White crosses) of two months old were used in this study. There were six (6) rabbits per treatment in a Completely Randomized Design (CRD). The treatment groups consisted of: control, sodium...

Author(s): Anoh K. U., Ayuba D., Ozung P. O. and Udayi M. A.

Optimization of PCR protocol for ISSR marker based genetic diversity assessment of acid lime [Citrus aurantifolia (Christm.) Swingle] germplasm in Eastern Nepal

April 2022

Acid lime [Citrus aurantifolia (Christm.) Swingle] is a valuable commercial fruit crop grown in Nepal's Terai to high hills which has high economic, cultural and medicinal importance. Due to low quality planting materials and poor orchard management, production and productivity of acid lime are extremely low in Nepal. The present study aimed at optimization of Inter-Simple Sequence Repeat (ISSR)-polymerase chain...

Author(s): Nabin Narayan Munankarmi, Neesha Rana, Tribikram Bhattarai, Ram Lal Shrestha, Sujan Chaudhary and Sangita Shrestha

Efficacy of Sudanese isolates of entomopathogenic fungi against the Khapra beetle Trogoderma granarium (Everts) (Coleoptera: Dermestidae)

April 2022

The current study evaluated the bio-control activity of Sudanese isolates of entomopathogenic-fungi against 3rd larval instars of Khapra beetle (Trogoderma granarium) (Everts) in Sudan and morphologically and molecularly characterized the virulent isolates. Fungi were isolated using Galleria-baiting method and tested against the larvae using immersion-technique at concentration of 1×107 conidia ml-1. Commercial...

Author(s): Ahmed Mohammed Ali Hammad, Adam Abdelkareem Geddo Abdelkareem, Azhari Omer Abdelbagi, Abd Elaziz Sulieman Ahmed Ishag&, Mark Delmege Laing, Jang-Hyun Hur

Molecular characterization of Escherichia co-resistance genes from chicken meat

April 2022

Escherichia coli multi-resistance to a variety of antimicrobials is a result of gene mutation on plasmids, integrons and transposons. The aims of this work were to: (1) detect genotype and phenotype antibiotic resistance genes in E. coli, and (2) determine whole-genome sequencing to discover E. coli gene multi-drug resistance in chicken meat. Samples were gathered, processed, and analysed bacteriologically; thereafter...

Author(s): Nagwa Thabet Elsharawy, Hind A. A. Al-Zahrani and Amr A. El-Waseif

Metabolic engineering of Neurospora crassa for increasing carotenoids synthesis

April 2022

Carotenoids are essential nutrient compounds with numerous biological functions. Neurospora crassa is a model filamentous fungus with orange pigmentation which is attributed to the accumulation of carotenoids containing neurosporaxanthin (NX) and neutral carotenoids (NC). To enhance carotenoids synthesis in N. crassa, isoprene diphosphate (IPP) and dimethylallyl diphosphate (DMAPP) were increased using the genes,...

Author(s): Sylvia E. Brown, Chun Lin, Zhengjie Liu, Hao Wen, Qin Cheng and Zichao Mao,

Liver enzyme evaluation and NAT2 polymorphism in patients on anti-tuberculosis and antiretroviral drugs at Jamot Hospital in Yaoundé-Cameroon

March 2022

Hepatotoxicity is reported frequently as an adverse reaction during tuberculosis (TB) and HIV treatment. This study aimed to investigate the incidence of antiretroviral and anti-tuberculosis drug-induced liver enzymes activities variation in TB and TB-HIV co-infected patients at Jamot Hospital in Yaoundé-Cameroon. From April 2018 to May 2019, 336 treatment-naïve TB patients were enrolled. Liver enzymes (AST,...

Author(s): Ambassa Axel Cyriaque, Tiani Lionel Ulrich, Djuidje Ngounoue Marceline, Assam Assam Jean Paul, Andoseh Généviève, Kamdem Thiomo Diane, Tchinda Fossi Cédric, Nkah Numfor Leonard, Gonsu Kamga Hortense, kouanfack Charles, Pefura Yone Eric Walter, Ntoumi Francine, and Penlap Beng Véronique,

Assessment of proximal, mineral composition and content of vitamin A and C of leaves and flowers from Lippia multiflora vegetable in Benin

March 2022

Lippia multiflora is a plant whose leaves and flowers are used as a food in Benin, so it is important to determine the nutritional properties of leaves and flowers of L. multiflora. Biochemical analyses for the determination of macronutrients, mineral salts and vitamins A and C on leaves and flowers of this leaf vegetable were done. The result indicates that the contents in leaves and flowers are, respectively:...

Author(s): Hihoto Wilfrid Djengue, Arlette Adjatin, Rock Djehoue, Zaki Bonou-gbo, Codjo Tiburce Odjo, Zinsou Com Koukpo, Arsène Jacques Fassinou, Gérard Tiko, Hyacinthe Ahissou and Alexandre Dansi

A study of the antimicrobial activity of Psidium guajava L. and Lawsonia inermis leaf extracts against some foodborne pathogens

March 2022

The study aims to determine the antibacterial activity of Psidium guajava and Lawsonia inermis leaf extracts against some foodborne pathogens. The leaf samples were collected, rinsed, dried, ground, and then stored. The leaf powder was soaked in ethanol and boiled in distilled water. Then, it was filtered. The antibacterial activity of P. guajava and L. inermis leaf extracts against Salmonella enteritidis,...

Author(s): Nagwa T. Elsharawy, and Afra Mohammed Baghdadi

Leaf microscopy, high performance liquid chromatography (HPLC) and gas chromatography-mass spectrometry (GC-MS) analyses of Croton zambesicus Müll.-Arg. leaf (Family: Euphorbiaceae) in Nigeria

March 2022

This study was done to get information on the chemical composition and the internal structure of the plant which could aid in its further characterization. The study is aimed at determining the epidermal leaf anatomy, HPLC of the hot water extract, chemical constituents of the oil from the leaves by GC-MS and chemo-microscopic properties of Croton zambesicus for proper identification of the plant. The leaf epidermal...

Author(s): Ugbabe G. E. and Dalyop J. D.

Agronomic performances of temporary immersion bioreactor-derived potato microtubers in a Peruvian low input cropping agriculture system

March 2022

In Peru, potato cultivation represents 25% of the agricultural gross domestic product yet only 0.2% of the agamic seed used is from certified sources. The use of temporary immersion bioreactors (TIB) has improved the quality of microtubers micropropagated along with savings in costs of production. The current study investigated the agronomic performances of Peruvian Canchan potato microtubers derived from TIB (basic...

Author(s): María de Lourdes Tapia y Figueroa, José Faustino Beraún Tapia, Elliosha Hajari, Maritza Escalona, Hervé Etienne, and José Carlos Lorenzo

Biogenic synthesis of silver nanoparticles using Azadirachta indica methanolic bark extract and their anti-proliferative activities against DU-145 human prostate cancer cells

February 2022

Phytomedicine coupled with nanotechnology has shown possibilities in treating different ailments including cancer. In the current study, silver nanoparticles (AgNPs) were biogenically synthesized using methanolic extracts of Azadirachta indica (neem) barks and tested for cytotoxic and anti-proliferative activities on normal cells (Vero E6) and human prostate cancer cells (DU-145), respectively by resazurin assay....

Author(s): Shedrack Reuben Kitimu, Peter Kirira, Judith Sokei, Dominic Ochwangi, Peter Mwitari and Naomi Maina,

Inclusion of African winged termites (Macrotermes nigeriensis) improves the nutrients and quality of fermented cassava mahewu

February 2022

Cassava mahewu is a non-alcoholic fermented beverage used by school children, but it has low contents of protein and micronutrients. This study examined the effect of inclusion of African winged-termite (AWT) on the nutritional quality and acceptability of cassava mahewu. Cassava flour was replaced with AWT at varying proportions of 100:0 (as control), 90:10, 80:20, 70:30 and 60:40% and fermented to obtain cassava...

Author(s): Paul Ndubuisi ANYIAM, Chinedu P. NWUKE, Goodluck Chibuikem ADIMUKO, Chinaza Precious NWAMADI, Elsa Maria SALVADOR, Grace Folake AJIBADE and Elizabeth Chinomso MAXWELL

Polymorphism of the heat shock protein 70 gene in indigenous chickens from different agro-climatic zones in Kenya

February 2022

Climate change leads to heat stress, which is one of the most challenging environmental conditions affecting poultry. Studying thermotolerance in poultry is crucial because it may identify genetic lines that can withstand heat stress. This study aimed to investigate polymorphisms in the heat shock protein 70 (HSP70) gene in indigenous chicken. In Kenya, we collected 277 blood samples from selected chicken ecotypes from...

Author(s): Grace Moraa Kennedy, Stephen Njuguna Kuria, Philip Murunga Panyako, Jacqueline Kasiiti Lichoti and Sheila Cecily Ommeh

In vitro propagation of two commercially important bamboo species (Bambusa tulda Roxb. and Dendrocalamus stocksii Munro.)

February 2022

Bamboo plant is an important biodegradable raw material which can play important role in rejuvenation of Indian rural economy through positively impacting agricultural, industrial, energy and in environmental sectors. Traditional methods of vegetative propagation of this plant have insufficient multiplication rate. In the present investigation, in vitro bud break and aseptic culture establishment in relation to...

Author(s): Ajoy Kumar Choudhary, Priyanka Kumari and Sunita Kumari

Cryopreservation of plant genetic resources: A legacy for humanity

February 2022

Plant genetic resources are essential for agri-food security in the world and conservation of genetic diversity. Cryopreservation is an in vitro culture technique used for long-term plant conservation, by freezing the tissue at low temperatures usually with liquid nitrogen (-196ºC). During cryopreservation, cell division and metabolic activity of the explants are quiescent. There are different cryopreservation...

Author(s): Bibiana Tirado-Pérez and Gabriela Sandoval-Cancino

Identification of potential seed storage protein responsible for bruchid resistance in common bean landraces from Tanzania and Malawi

January 2022

Bean bruchids are among the most devastating insect pests of common bean that can inflict huge losses in storage. To identify potential resistance to these pests, screening was performed at Sokoine University of Agriculture. Two resistant landraces were identified, viz Kalubungula and KK25. Recombinant inbred (RI) KSy, KSw and ML populations were created from crosses between Soya × Kalubungula, Soworo ×...

Author(s): Caroline Ng’homange Maro, Deogracious Protas Massawe, George Muhamba Tryphone, James Robert Myers, Joel William Davis and Paul Mbogo Kusolwa 

Isolation and characterization of multidrug resistance bacteria from hospital sewage samples, Maharashtra, India

January 2022

Multiple antibiotic resistance is a major cause of clinical infections worldwide. This study determined the pattern of multidrug bacterial resistance in hospital sewage samples from the Marathwada region of India. Forty-eight isolates of bacteria were obtained from 6 locations of Aurangabad.  An antibiotic sensitivity test was carried out using the disc diffusion method. Among all the antibiotics tested, the...

Author(s): Bhaurao Bapurao Choushette and Rajendra A. Satpute

Rapid single-tube splice variants typing of the BF gene based on dual-primer RT-PCR amplification that influence resistance/susceptibility to Marek’s disease in chicken

January 2022

A new effective splice variants typing based on multiplex allele-specific dual-primer RT-PCR assay was developed in a single tube for the rapid detection of the exon 7 splice variant of the BF gene. With 2 pairs of primers, one pair was used for amplifying cDNA fragments containing exon 7 of the BF gene, the other does not contain exon 7 of the BF gene. The templates were amplified in one tube and the type of splice...

Author(s): Yuan-chang Jin, Yu-feng Li, Liang Huang, Jia-jun Zhou, Xue-fang Zhang,  Ran Ma, Meng-lin Lu, Mei-lin Hao, Gang Zeng  and Bo-ping Zeng

Diversity of Arbuscular mycorrhizal fungi in the three agroecological zones of the Central African Republic

January 2022

Arbuscular mycorrhizal fungi (AMF) are organisms that can establish symbioses with 80% of terrestrial plants. Soils were collected in three agroecological zones (AEZ) of the Central African Republic (CAR). The aim of this research is to study the diversity of AMF in the CAR. The spore extraction and enumeration, granulometric and physicochemical analyses of each soil were performed. The results showed that AEZ3 has a...

Author(s): Mathurin Djamndo DJASBE,, Hubert Dieu Béni ELIAN, Tahir Abdoulaye DIOP and Denis Omokolo NDOUMOU

Molecular and morphological identification of fungi causing canker and dieback diseases on Vangueria infausta (Burch) subsp. rotundata (Robyns) and Berchemia discolor (Klotzsch) Hemsl in lower Eastern Kenya

January 2022

Drought-tolerant multipurpose fruit trees Vangueria infausta (Burch) subsp. rotundata (Robyns) and Berchemia discolor (Klotzsch) Hemsl are native to Kenya. These fruit tree species are suitable for dryland agroforestry and support local communities with food, medicine, fodder and other necessities. Reports by the local communities indicate that the two species suffer from diebacks and cankers. The aim of this study was...

Author(s): Susan Karani, Jane Njuguna, Steven Runo, Alice Muchugi, Joseph Machua and Phoebe Mwaniki

Effect of foliar application of nitrogen-phosphorus-potassium fertilizers on nutrient uptake and protein content of maize

December 2021

The effect of foliar application of nitrogen-phosphorus-potassium (NPK) fertilizers on nutritional status and yield of maize (Zea mays L.) were investigated through a study conducted in a zonal agricultural research station of University of Agricultural Sciences, GKVK Bengaluru (India). The experiment was laid out in randomized complete block design. The treatments consisted of two levels of soil application (75 and...

Author(s): D. Nirere, S. R. Mbaraka, F. X. Rucamumihigo, F. Murorunkwere, F. R. Musana and H. Rukangantambara

Genetic diversity analysis of sorghum [Sorghum bicolor (L.) Moench] races in Ethiopia using simple sequence repeats (SSR) markers

November 2021

Sorghum [Sorghum bicolor (L.) Moench], is believed to be originated in Ethiopia and Sudan. Although, many morphological and molecular diversity studies reveal the existence of genetic variations with sorghum populations, their distribution within basic races were not considered. Hence, the present study aimed to analyze the extent and distribution of genetic variation within basic Ethiopian sorghum landraces using SSR...

Author(s): Gamachu Olani, Tileye Feyissa and Tesfaye Disasa

Statistical modeling of effective doses in hormetic dose-response relationships by reparameterization of a bilogistic model for inverted U-shaped curves

November 2021

Hormesis is a biphasic dose (concentration)-response phenomenon characterized by low dose stimulatory and high dose inhibitory effects exerted by stressors on living organisms. Recently, there has been increased interest in the phenomenon and statistical models for its exploration in toxicological studies. The bilogistic model of Beckon et al. is one of such models for modeling biphasic dose-response relationships in...

Author(s): Christian O. Nweke, Oluchukwu R. Nwangwu, Chukwudi J. Ogbonna and Reuben N. Okechi

Advances on the application of non-coding RNA in crop improvement

November 2021

Thanks to committed plant breeding researchers over the few decades, many problems associated with food supply and qualities have been improved. Food security is an exceptionally serious worldwide issue via world climate change, the increase in human population, and the use of plants for bioethanol production in current years. Improved tolerance to abiotic and biotic stress, resistance to herbicides, improved yield, and...

Author(s): Diriba Guta Dekeba

Spatial and regional directory of wild Auricularia species found in the forest of Southwest Nigeria

October 2021

The African forest, which was and still is the heart of biodiversity, is fast losing its bio-components due to natural disasters and human encroachment. A catalogue of the bio-components of the African forest is imminent so that conservation programs can be established to safeguard rare germplasm(s) from extinction. The population density of wild Auricularia (Mushroom) of Southwestern Nigeria was the focus of this...

Author(s): Victor S. Ekun, Clementina O. Adenipekun, Omena B. Ojuederie and Peter M. Etaware

Antioxidant effects of ginger, garlic and onion aqueous extracts on 2-thiobarbituric acid reactive substances (2-TBARS) and total volatile basic nitrogen (TVB-N) content in chevon and pork during frozen storage

October 2021

The study investigated the effect of 10% aqueous extracts of ginger, garlic and onion on the quality and shelf life of frozen chevon and pork as reflected by changes in values of 2-thiobartituric acid reactive substances (2-TBARS) and total volatile basic nitrogen (TVB-N) over a 14 day storage under frozen conditions.  The pH, 2-TBARS and TVB-N of chevon and pork were measured from frozen storage at -20°C after...

Author(s): Lesten Eliez Chisomo Chatepa, Kingsley George Masamba and Jonathan Tanganyika

Antioxidative and anti-aging activities of Abeliophyllum distichum Nakai extracts fermented with lactobacillus plantarum and lactobacillus brevis

October 2021

Abeliophyllum distichum Nakai is a deciduous shrub that belongs to Oleaceae Abeliophyllum and grows only in Korea. In this study, the antioxidative activity, cytotoxicity, anti-aging activity, and levels of acteoside and isoacteoside were compared between non-fermented and fermented (using Lactobacillus plantarum and Lactobacillus brevis) extracts of A. distichum Nakai. The cytotoxicity of these extracts, along with...

Author(s): KiBeom Lee, Ju Hyun Park and Yun Sung Kim  

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