GLORIA

GEOMAR Library Ocean Research Information Access

X

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • ISMAIL, Mamdoh Ewis  (3)
  • 1
    Online Resource
    Online Resource
    Identification and Pathogenicity of Phytopathogenic Bacteria Associated with Soft Rot Disease of Girasole Tuber
    Society of Land Measurements and Cadastre from Transylvania ; 2012
    In:  Notulae Scientia Biologicae Vol. 4, No. 1 ( 2012-02-22), p. 75-81
    Details
    In: Notulae Scientia Biologicae, Society of Land Measurements and Cadastre from Transylvania, Vol. 4, No. 1 ( 2012-02-22), p. 75-81
    Abstract: During 2010-2011 growing seasons six bacterial isolates were separated from naturally infected girasole plants tubers (Helianthus tuberosus L.) cv. ‘Balady’, showing soft rot, collected from experimental Farm of the Faculty of Agriculture, in El-Minia University, Egypt. Pathogenicity tests showed various virulence for the bacteria isolated from girasole tubers, found pathogenic. These organisms were characterized as rod-shaped, Gram negative, α-methyl-d-glucoside medium, reducing substances from sucrose, phos, phatase activity and deep cavities on pectate medium. Otherwise, diagnostic tests suggested that the pathogen was Erwinia carotovora ssp. carotovora. The isolated bacteria caused soft rot of wounded tubers when inoculated into tissues. The bacterial isolates were compared for their degree of pathogenicity as well as for differences in specific symptoms, induced in different hosts. The tested isolates could infect several host ranges, such as fruits of apricot, apple, olive, lemon, squash, eggplant and potato tubers, bulbs and garlic and onion cloves, roots radish, carrot, sweet potato and rape. On the other hand, no symptoms were exhibited on pods of bean and cowpea, faba bean, fruits of pepper and tomato. The extracts of experimentally diseased girasole tubers were active in pectinase and also in caboxymethyl cellulose at pH 6 compared to enzyme activities in healthy tissues. Also, the isolated bacteria increased the total and reducing sugars in infected tissues.
    Type of Medium: Online Resource
    ISSN: 2067-3264 , 2067-3205
    URL: Article
    DOI: 10.15835/nsb417269
    Language: Unknown
    Publisher: Society of Land Measurements and Cadastre from Transylvania
    Publication Date: 2012
    detail.hit.zdb_id: 2533002-0
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 2
    Online Resource
    Online Resource
    The Use of Antioxidants to Control Root Rot and Wilt Diseases of Pepper
    Society of Land Measurements and Cadastre from Transylvania ; 2010
    In:  Notulae Scientia Biologicae Vol. 2, No. 2 ( 2010-06-13), p. 46-55
    Details
    In: Notulae Scientia Biologicae, Society of Land Measurements and Cadastre from Transylvania, Vol. 2, No. 2 ( 2010-06-13), p. 46-55
    Abstract: Ten isolates of Fusarium spp. were isolated from pepper plants collected from different locations in New Valley Governorate, Egypt. Fusarium solani isolate FP2 and F. oxysporum isolate FP4 were highly pathogenic isolates but the other isolates moderate or less pathogenic to pepper plants (cv. 'Anaheim-M'). The four antioxidant compounds (coumaric acid, citric acid, propylgalate and salicylic acid each at 100 and 200 ppm) were evaluated for their in vitro and in vivo agonist to Fusarium pathogenic isolates caused root rot and wilt diseases in pepper plants. All tested antioxidant compounds reduced damping-off, root rot/wilt and area under root rot/wilt progress curve when used as seed soaking, seedling soaking, and soil drench especially at 200 ppm under greenhouse and field conditions compared with untreated plants. All chemicals increased fresh and dry weight of seedling grown in soil drenching or seed treatment with any antioxidants. At the same time, all tested chemicals significantly increase plant growth parameters i.e plant length, plant branching, and total yield per plant in case of seedling soaking or soil drench. In general, propylgalate at 200 ppm was more efficient in reducing infection with damping-off, root rot and wilt diseases as well as increasing the seedling fresh weight, dry weight, plant length, plant branching, number of pod plant-1 and pod yield plant-1. On the other hand, all tested antioxidants had less or no effect on mycelial dry weight and mycelial leaner growth. On the contrary, all chemicals much reduced spore formation in both Fusarium species at 100 or 200 ppm and the inhibitory effect of antioxidants increased with increasing their concentrations.
    Type of Medium: Online Resource
    ISSN: 2067-3264 , 2067-3205
    URL: Article
    DOI: 10.15835/nsb223699
    Language: Unknown
    Publisher: Society of Land Measurements and Cadastre from Transylvania
    Publication Date: 2010
    detail.hit.zdb_id: 2533002-0
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 3
    Online Resource
    Online Resource
    Induction of Systematic Resistance in Soybean Plants against Fusarium Wilt Disease by Seed Treatment with Benzothiadiazole and Humic Acid
    Society of Land Measurements and Cadastre from Transylvania ; 2011
    In:  Notulae Scientia Biologicae Vol. 3, No. 2 ( 2011-05-16), p. 80-89
    Details
    In: Notulae Scientia Biologicae, Society of Land Measurements and Cadastre from Transylvania, Vol. 3, No. 2 ( 2011-05-16), p. 80-89
    Abstract: The ability of benzothiadiazole (BTH), humic acid (HA) and their combination when used as seed soaking to induce systemic resistance against a pathogenic strain of Fusarium oxysporum was examined in four soybean cultivars under greenhouse conditions. Both inducers and their combination were able to protect soybean plants against damping-off and wilt diseases compared with check treatment. These results were confirmed under field conditions in two different locations i. e Minia and New Valley governorates. The tested treatments significantly reduced damping-off and wilt diseases and increased growth parameters, except number of branches plant-1, and seed yield. Application of BTH (0.25) + HA (4 g/l) was the most potent in this respect treatment. Soybean seed soaking in BTH+ HA recorded the highest activities of the testes of oxidative enzymes followed by BTH in the four soybean cultivars. Whereas, HA treatment was recorded the lowest increased of these oxidative enzymes. Also, similar results were obtained in case of total phenol but HA increased the total phenol more than BTH in all tested cultivars.
    Type of Medium: Online Resource
    ISSN: 2067-3264 , 2067-3205
    URL: Article
    DOI: 10.15835/nsb326068
    Language: Unknown
    Publisher: Society of Land Measurements and Cadastre from Transylvania
    Publication Date: 2011
    detail.hit.zdb_id: 2533002-0
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...