A5046874106- Plant Pathogenic Bacteria Studies
- Plant Pathogens and Fungal Diseases
- Plant-Microbe Interactions and Immunity
- Plant Disease Resistance and Genetics
- Plant Pathogens and Resistance
- Legume Nitrogen Fixing Symbiosis
- Plant biochemistry and biosynthesis
- Banana Cultivation and Research
- Horticultural and Viticultural Research
University of Carthage
2020-2025
Center of Biotechnogy of Borj Cédria
2011-2013
Abstract Gummosis, caused by various Phytophthora species, poses a significant threat to citrus trees globally, leading reduced fruit production and orchard decline. The primary pathogens responsible are P . citrophthora , P. nicotianae palmivora which infect roots, trunks, fruits, thriving in wet conditions spreading through zoospores. This review highlights the economic impact of gummosis, detailing symptoms such as bark cracking, gum exudation, root decay that contribute productivity....
During recent years (2013-2015) a disease similar to citrus bacterial blast of orange (Citrus sinensis) and black pit lemon limon) has been observed in Tunisian orchards. In survey 35 infected orchards were located almost all known citrus-growing regions Tunisia (with concentration the Cap Bon region, North Tunisia). Symptoms blasted flowers buds, spotted blistered fruits, stem cankers, leaf blights plant dieback both (Figs. 1, 2). Leaf symptoms discolored areas, often at junction blade...
In the spring of 2012, symptoms a disease resembling citrus blast and black pit were observed in some orchards Tunisia. The epidemic spread rapidly following years. Twenty‐four commercial from four Tunisian regions showing characteristic bacterial diseases surveyed during 3‐year study. Eighty‐eight Pseudomonas‐ like isolates successfully obtained northeast west No recovered central region. Overall, 46 identified as Pseudomonas syringae pv. most them showed similar phenotypic genetic...
Abstract Citrus blast and black pit caused by Pseudomonas syringae pv. (Pss) is the only bacterial disease reported in Tunisian orchards. The phylogenetic relationship between Pss strains was studied based on multilocus sequence analysis (MLSA), using partial sequences of housekeeping genes rpoD , rpoB gyrB cts pfk for 14 representative strains, including reference strain LMG5496. MLSA revealed that are closely related to LMG5496 cluster phylogroup 02. Based gene, majority clustered clades...
Summary. The Sinorhizobium meliloti microsymbiont of Medicago spp. was used in an antibiosis test against Phoma medicaginis and bioprotection assays truncatula JA17 from the pathogen. Among 17 S. strains isolated root nodules M. laciniata grown Tunisian soils, six showed up to 60% growth inhibition fi ve P. infected eld-grown truncatula. Two with differing vitro effects on medicaginis, 10.16/R6 antagonist 5M6 non antagonist, were a assay inoculation caused complete stem rotting, mortality...
Since October 2011, a serious outbreak of crown gall disease was observed on 1- and 2-year-old grapevines (Vitis vinifera L.) cv. Superior Seedless in several vineyards located the region Regueb center Tunisia. Fifty isolates Agrobacterium were isolated tartrate medium from galls affected plants. To prepare template DNA, cell suspensions lysed 0.25% sodium-azide (NaN3) buffer prepared 1% Triton X-100 by heating samples at 95°C for 10 to 15 min (1). The strains differentiated using multiplex...
coagulans, 420N postharvest black spot of fresh date palm fruit, 286N Alternaria arborescens, 510 blight potato, caused by tenuissima, 1246N