Hamed Khlaif

• Doctor of Philosophy
• Professor (Full) at University of Jordan

Khlaif, H. M., Rajeh, O. N., Wreikat, B. I. & Abu-Obeid, I. M. (2020). Induce resistance against bacterial speck disease of tomato Pseudomonas syringae pv. tomato by the chemical inducer ß-aminobutyric acid. Bulg. J. Agric. Sci., 26 (2), 355-364 The ability of ß-aminobutyric acid to induce resistance tomato (Lycopersicon esculentum Mill. var. GS12)...

Different studies were done in order to investigate the occurrence of bacterial diseases on different crops grown in Jordan during different growing seasons. Surveys were made and different bacterial diseases have been recorded based on symptoms and pathogenic nature. Morphological characters, biochemical tests and PCR detections were employed in o...

Different studies were done in order to investigate the occurrence of bacterial diseases on different crops grown in Jordan during different growing seasons. Surveys were made and different bacterial diseases have been recorded based on symptoms and pathogenic nature. Morphological characters, biochemical tests and PCR detections were employed in o...

Bacterial soft rot disease is one of the most important factors affecting potato production in Jordan. Based on biochemical and physiological analyses, Jordanian isolates of soft rot from potato were identified as Pectobacterium carotovorum subspecies carotovorum (DYE 1969). Phylogenetic analysis using pmrA gene sequence data showed that isolates f...

Bacterial soft rot caused by Pectobacterium carotovorum subspecies carotovorum is among the important diseases of potato causing economic losses. A study was conducted in order to test the susceptibility of 5 different potato cultivars to the artificial inoculation with 10 7 Cfu/ml of the suspension of the causal agent Pectobacterium carotovorum su...

Two hundred and four rotted potato samples were collected from different Jordanian potato growing areas and commercial stores. The isolated bacteria were subjected to morphological observation, biochemical and physiological identification as well as PCR. Using different sets of primers, and sequence analysis, 131 bacterial isolates were identified...

Potato blackleg disease is surveyed for spreading out in different potato growing areas in Jordan including; (Rum, and Al-Mudawwara). Forty six bacterial isolates of Erwinia carotovora subsp. atroseptica (Eca), the causal agent of the disease, were isolated and identified by different biochemical, physiological and nutritional tests from 145 diseas...

One hundred clinical isolates of Pseudomonas aeruginosa were serologically classified into 7 Jordanian serotypes (labeled JO1-JO7) Odeh, 2002, M.Sc. thesis, University of Jordan). Using the slide agglutination test, 4 of them (JO4, JO5, JO6, and JO7) were serologically matched with the International Antigenic Typing Scheme (IATS) strains (IATS 20,...

16S-rDNA analysis of 30 Agrobacterium tumefaciens Jordanian isolates belonging to 1, 2, 3 and intermediate biotypes, were characterized by the restriction fragment length polymorphism analysis of PCR product. Two reference cultures of A. tumefaciens were used for comparison. The profile obtained by the analysis formed three main clusters confirmed...

Sixty-nine different bacterial isolates obtained from pome fruit (apple Malus domestica, pear Pyrus communis, and quince Cydonia oblonga) and Firethorn (Pyracantha sp.), suspected of being infected with fire blight and collected from different pome fruit growing areas in Jordan during the 1999 growing season, were biochemically, physiologically and...

SUMMARY Two experiments were carried out in different Jor- danian locations to test the effect of solarization on populations of Agrobacterium spp., including Agro- bacterium tumefaciens, the crown gall agent that was inoculated in the soil, as well as on crown gall inci- dence. The results of these experiments showed that solarization markedly dec...

Summary. Field inspection indicated that crown gall disease occurs in various fruit-tree-growing areas in Jordan, including Almafraq, Alsalt, Alshobak, Altafila, Alyadoda, Amman, Irbid, Jerash, Jordan Valley and Madaba. Twohundred tumorigenic Agrobacterium isolates were obtained from stone fruit rootstocks (bitter almond, GF677, GF305, Myrobalan, N...

Tomato stem cross sections of four-week-old seedlings (NS 268 cultivar) artificially inoculated with Agrobacterium tumefaciens showed meristematic cell transformation in the internal phloem tissues four days after inoculation. This cell division was accompanied by cell arrangement into compacted parallel rows to heal the slit caused by artificial i...