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Register a new userStudy effectiveness of some compounds induce chemical and filtrate Trichoderma viride to resist the pathogenic Fungi F. oxysporum and F. solani
دراسة فعالية بعض مركبات الاستحثاث الكيميائية و رشاحة Trichoderma viride في مقاومة الفطرين الممرضين F. Solani و Fusarium oxysporum
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أجري البحث بهدف اختبار تأثير كل من رشاحة T. viride و الكيتوزان و بنزوات الصوديوم في النمو الخيطي للفطريفن الممرضين F. solani و F. oxysporum, و معرفة تأثيرها في حماية بذور الفليفلة من هذين الفطرين، و من ثم تقدير فعالية أنزيم البيروكسيداز في نباتات الفليفلة الناتجة عن بذور تمت معاملتها بالمركبات سابقة الذكر.
The research was conducted in order to test the effect of each of the filtrate T. viride and chitosan and sodium benzoate in filamentous growth pathogenic fungi F. oxysporum and F. solani, and their impact in protecting the seeds of peppers from these two fungi, and then assess the effectiveness of peroxidase enzyme in pepper plants from seeds treated with the above-mentioned compounds.
References used
ABD-EL-KAREEM, F., EL-MOUGY, N.S., EL-GAMAL, N.G., and FATOUH, Y.O. (2006). Use of chitin and chitosan against tomato root rot disease under greenhouse conditions. Res. J. Agric. Biol. Sci. 2: 147-152
AGRIOS,G.(2005)Plant Pathology,5th,Acdemmic PreesInc :NewYork, 762
Ajith, P.S. and Lakshmidevi, N.(2011) Effects of sodium and potassium salts on Colletotrichum capsiciincitant of anthracnose on bell pepper. Journal of Agricultural Technology Vol. 7(2): 423-430
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A Study was carried out to evaluate the ability of the methanolic, hydro and oily
extractions of anise seeds (Pimpinella anisum L.) to inhibit the growth of the pathogenic
fungi Fusarium oxysporum and Aspergillus niger. The results showed a good in
hibition
ability of the alcoholic and hydro extractions on the growth of the studied fungi. The
inhibition ability differed due to the used concentrations. When the methanolic extraction
was used by concentrations (2, 4, and 6) mlg/ ml at the seventh day, the inhibition ability
was (42.5, 50.6 and 64.4)% of the fungus F. oxysporum, respectively. And was (23.6, 42.7
and 55.1)% of the fungus A. niger, respectively. Whereas when the hydro extraction was
used by the same concentrations, the inhibition ability was (59.2, 65.3 and 70)%
respectively for the fungus F. oxysporum, and (46.1, 58 and 61)% for the fungus A. niger,
respectively. The oily extraction showed high inhibition ability, where the inhibition rate
was 100% when the extraction was used by the two concentrations 50 and 75 μl for both
two studied fungi.
Fuarium oxysporum fragariae, which effects the strawberry plants
in the green house in The Syrian coast, is one of the main problems.
The study showed that the rate of infection of it between 12.1 to
17.95%. And the fungus were isolated the fungus from the roots and
crowns and soil , while is olation from stolons and leaves was not
feasible.
sixteen isolates of Fusarium oxysporum f. sp. ciceris (Foc ),
representing six provinces (Al Hasakah, Aleppo, Idlib, Hamah,
Homs and Dara) of Syria were analyzed for pathogenic
variability on a set of 10 differential cultivars of chickpea.
The effect of six bacterial isolates of Proteus genus were studied the on
causative of Fusarium axysporum f.sp ciceris in both the glasshouse and
the field.
The antagonistic activity of liquid culture filtrate of Trichodermaharzianum at
different concentrations (5, 10, 20 and 30%) was evaluated "in vitro" at 25 C° against
following plant and human pathogenic fungi: Aspergi
llusniger, Rhizopusstolonifer,
Fusariumoxysporum, F.moniliforme, Alternariaalternata and Candida albicans.
The results showed high level activity of culture filtrate inhibiting the growth of
tested fungi.
The activity was varied with the different species of fungi and the different
concentrations of culture filtrate. The highest activity was against fungus A.niger which
showed precent inhibition equal 96.3% at 30% concentration. Whereas the lowest
inhibition percentage to 77.6% was recorded for fungus A.alternata in comparison with
other fungi.
The culture filterate was not affected the radial colonies growth of R.stolonifer at 5%
and 10% concentrations, however the colonies was fragile and weak, and clearly inhibited
the spores formation.
The culture filtrate was showed high antagonistic capability against the human
pathogenic fungus C.albicans, and the radial inhibition growth was 1.38 cm at 30%
concentration.
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