Effect of Water-Soluble Fraction of Petroleum Hydrocarbon on the Growth and Sporulation of Botryodiplodia theobromae (Pat.)
Issue:
Volume 3, Issue 5, October 2017
Pages:
83-87
Received:
10 October 2017
Accepted:
28 October 2017
Published:
20 November 2017
Abstract: The control of fungal pathogens of economic crops in soil is crucial to sustainable food production and distribution. In this study, the effect of aqueous fractions of petroleum hydrocarbons was investigated on the growth and sporulation of Botryodiplodia theobromae (Pat.), a common fungal pathogen isolated from rotten cassava tubers. The fungal isolates were subjected to graded concentrations of the water-soluble fraction (WSF) of crude oil and monitored for their effects on the mycelial growth and spore germination using standard mycological media and techniques. Results revealed that the biological effects of the chemical fraction were concentration dependent and significant at P = 0.01 and 0.05 when compared with the controls. After 5 h, the least inhibitory effect against the spore germination was observed by the 1 mL WSF concentration with 87% spore germination. The effects were significantly different (P<0.01) at WSF concentrations of 7.0-9.0 mg/mL with percentage germination values of 44%, 46% and 29% respectively. The mycelial growths were also significantly reduced with the highest inhibition being 73% at 9.0 mg/mL. The mycelial dry weight remained significantly unchanged (P>0.05) at higher concentrations. Findings from this study suggest that aqueous soluble fractions of petroleum hydrocarbons can significantly inhibit the spores and mycelium growth of B. theobromae (Pat.). Thus, they could be exploited as template for biosynthesis of potential fungicide against the test phytopathogens.
Abstract: The control of fungal pathogens of economic crops in soil is crucial to sustainable food production and distribution. In this study, the effect of aqueous fractions of petroleum hydrocarbons was investigated on the growth and sporulation of Botryodiplodia theobromae (Pat.), a common fungal pathogen isolated from rotten cassava tubers. The fungal is...
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Comparative Anti-mycobacterial Activity on Lowenstein-Jensen Slants of Selected Medicinal Plants Used in the Congolese Pharmacopeia
Gédéon Bongo,
Huruma Tuntufye,
Koto-te-Nyiwa Ngbolua,
Joseph Malakalinga,
Tshiama Claudine,
Aaron Pambu,
Fabrice Mwanza,
Clément Mbadiko,
Gisèle Makengo,
Jeff Iteku,
Dorothée Tshilanda,
Pius Mpiana,
Théophile Mbemba,
Rudovick Kazwala
Issue:
Volume 3, Issue 5, October 2017
Pages:
88-96
Received:
6 October 2017
Accepted:
28 October 2017
Published:
30 November 2017
Abstract: Tuberculosis is an infectious disease that kills approximately three million people annually worldwide. The emergence of multidrug resistant, extensively drug resistant and lengthy therapy reduces the patient compliance and therefore comprises control strategies. In this study, the leaves of Terminalia ivorensis, Carapa procera, Fagara macrophylla, Anacardium occidentale, Ficus spp. and Drepanoalpha® (a polyherbal medicine to relieve sickle cell anaemia) were extracted with petroleum ether, ethyl acetate and methanol in order to screen potential bioactive compounds in different extracts and to assess their anti-mycobacterial activity against Mycobacterium tuberculosis H37Rv and Mycobacterium tuberculosis spp. on Lowenstein-Jensen medium using a qualitative approach. The activity was determined as to whether there was growth or not. It was shown that only the methanolic extract displayed a good activity on both strains than the petroleum ether and ethyl acetate extracts. The presence of phytochemicals in plants such as alkaloids, flavonoids, tannins, saponins, anthocyanins and quinones known to be of medicinal importance pointed out a possible source for anti-mycobacterial agents to address the problem of multidrug resistance. The in vitro findings of this study provide a partial support for the use of these plants in the control of various infectious diseases as lead to drug discovery and should be reiterated and recommended for a clinical trial using an animal model.
Abstract: Tuberculosis is an infectious disease that kills approximately three million people annually worldwide. The emergence of multidrug resistant, extensively drug resistant and lengthy therapy reduces the patient compliance and therefore comprises control strategies. In this study, the leaves of Terminalia ivorensis, Carapa procera, Fagara macrophylla,...
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