Isolation and characterization of Cronobacter spp. from indigenous infant flours sold in public health care centres within Abidjan, Côte d'Ivoire

Food Control ◽  
2016 ◽  
Vol 62 ◽  
pp. 224-230 ◽  
Author(s):  
Kouadio Yao ◽  
Kouadio F. N'guessan ◽  
Nanga Y. Zinzendorf ◽  
Kra A. Kouassi ◽  
Kouassi C. Kouassi ◽  
...  
2014 ◽  
Vol 95 (2) ◽  
pp. 481-485 ◽  
Author(s):  
Albert J. Auguste ◽  
Christine V. F. Carrington ◽  
Naomi L. Forrester ◽  
Vsevolod L. Popov ◽  
Hilda Guzman ◽  
...  

Pools of mosquitoes were tested for insect-specific viruses using cytopathic effect (CPE) assays on Aedes albopictus (C6/36) cells. Illumina sequencing of RNA from pool TR7094, which produced extensive CPE 2 days post-infection, yielded the complete genome sequences of a previously unknown Bunyavirus, designated Cumuto virus (CUMV), and a second virus designated Wallerfield virus (WALV). WALV shared highest amino acid identity (60.1 %) with Dezidougou virus from Côte d’Ivoire, a positive-sense, single-strand RNA, insect-specific virus belonging to the newly proposed genus Negevirus associated with mosquitoes and phlebotomine sandflies. The S, M and L segments of CUMV were most closely related to those of Gouleako virus, also from Côte d’Ivoire (amino acid identities of 36 %, 38 % and 54 % respectively). Neither virus produced CPE on vertebrate cells, or illness in newborn mice. Isolation and characterization of these viruses increase our knowledge of the geographical distribution, diversity and host range of mosquito-specific bunyaviruses and negeviruses.


Author(s):  
Daniel Kouamé Kra ◽  
Yapi Richmond Baka ◽  
David Coulibaly N’golo ◽  
Ipou Joseph Ipou

The cocoa tree, the mainexport crop in Côte d'Ivoire is frequently attacked by a disease: brown pod rot, caused by Phytophthora spp. which causes a considerable drop in production. This soil-borne pathogen attacks on so-called weeds when environmental conditions are favourable. The presence of these susceptible weed hosts can amplify this scourge of brown rot by transmitting the pathogen to the crop plant. In order to improve the yield of this crop, a study was conducted in the Nawa region to identify the weed hosts through the characterization of the pathogen. This study consisted first in the inventory of susceptible host weeds of Phytophthora spp. and second in the morphological characterization of the pathogen. Concerning the host weeds inventory we procceeded determining all symptomatic weeds located within 3 m of the cocoa plants affected by brown rot. We identified 48 susceptible host species, divided into 41 genera and 22 families and we observed brown spots on the leaves of Oplismenus burmannii and Laportea aestuans; on the leaves of Clerodendrum splendens and Xanthosoma mafaffa, brown necroses surrounded by a yellow halo were noticed. Oily brown spots were examined on the leaves of Ageratum conyzoides. On the proximal, lateral and distal parts of the pods symptoms of brown spots covered with whitish mycelia were observed. Phytophthora strains obtained from the pods and weeds on PDA culture medium were characterized by matted, white mycelial colonies with a cottony appearance. Microscopic features revealed the presence of sporocysts, oospores and chlamydospores of different shapes.


2020 ◽  
Vol 165 (3) ◽  
pp. 725-730 ◽  
Author(s):  
Christiane Essoh ◽  
Jean-Philippe Vernadet ◽  
Gilles Vergnaud ◽  
Adama Coulibaly ◽  
Adèle Kakou-N’Douba ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document