![](/images/graphics-bg.png)
Survey of bacteria in the farm of faculty of agriculture, Al-Azahr University, Assiut Governorate, Egypt
العناوين الأخرى
حصر للبكتيريا الموجودة بمزرعة كلية الزراعة-جامعة الأزهر بمحافظة أسيوط
المؤلف
al-Sayyid, Said Abbas Muhammad
المصدر
Alexandria Science Exchange Journal
العدد
المجلد 38، العدد 4 (31 ديسمبر/كانون الأول 2017)، ص ص. 956-966، 11ص.
الناشر
جامعة الإسكندرية كلية الزراعة جمعية أ. د. عبد المنعم بلبع لبحوث الأراضي و المياه
تاريخ النشر
2017-12-31
دولة النشر
مصر
عدد الصفحات
11
التخصصات الرئيسية
الملخص EN
Two hundred and fifteen soil bacteria isolates able to reduce NO-3, 210 produced nitrous oxide (N2O), even only 47 were respiratory denitrifiers .
Nitrite or NH+4 was the major product of NO-3 reduction by the non-denitrifying organisms, but typically about 5 to 10% and up to 34% of the NO-3 reduced by them was released as N2O during a 2- week incubation period.
Bacillus and Enterobacter were the most commonly observed genera of non-denitrifying N2O producers.
Fermentative NO-2reduction and N2O production by a Bacillus sp.
and a Citrobacter sp.
were characterized in pure culture studies.
Dinitrogen (N2) was not produced in detectable quantities by these organisms.
When added to autoclaved soil, they accumulated more N2O than two denitrifying pseudomonads, since the latter consume and produce N2O.
In tryptic soy broth (TSB), which allows active fermentative growth, NH+4 was apparently the major product of NO-3 reduction.
Added NH+4 did not inhibit N2O production or apparent reduction to NH+4, indicating that these processes are not essimilatory .
The effect added glucose on N2O production varied with the organism and media composition.
Nitrous oxide production from NO-2 by these organisms was shown to be at least partially a biochemical reaction.
The N2O evolved slowly in bath cultures and mostly after apparent growth ceased.
This is apparently a novel mechanism of N2O generation which differs significantly from respiratory denitrification .
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
al-Sayyid, Said Abbas Muhammad. 2017. Survey of bacteria in the farm of faculty of agriculture, Al-Azahr University, Assiut Governorate, Egypt. Alexandria Science Exchange Journal،Vol. 38, no. 4, pp.956-966.
https://search.emarefa.net/detail/BIM-952615
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
al-Sayyid, Said Abbas Muhammad. Survey of bacteria in the farm of faculty of agriculture, Al-Azahr University, Assiut Governorate, Egypt. Alexandria Science Exchange Journal Vol. 38, no. 4 (Oct. / Dec. 2017), pp.956-966.
https://search.emarefa.net/detail/BIM-952615
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
al-Sayyid, Said Abbas Muhammad. Survey of bacteria in the farm of faculty of agriculture, Al-Azahr University, Assiut Governorate, Egypt. Alexandria Science Exchange Journal. 2017. Vol. 38, no. 4, pp.956-966.
https://search.emarefa.net/detail/BIM-952615
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
رقم السجل
BIM-952615
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
![](/images/ebook-kashef.png)
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر
![](/images/kashef-image.png)