کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4382310 1617806 2014 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Bacteria dominate ammonia oxidation in soils used for outdoor cattle overwintering
ترجمه فارسی عنوان
باکتریها اکسیداسیون آمونیاک را در خاک های مورد استفاده برای زمستان گذراندن گله های غالب تسلط می دهند
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
چکیده انگلیسی
In areas used for cattle overwintering detrimental effects normally associated with grazing are intensified. Among the alterations observed, increases on the N availability and soil pH may highly influence structure of ammonia oxidizing microbes and thus influence nitrification pattern in soil. To evaluate this assumption, we assessed the abundance and diversity of ammonia oxidizing bacteria (AOB) and archaea (AOA) in three sites with different degrees of animal impact (severe, moderate or no impact) of an overwintering pasture by means of qPCR and T-RFLP of amoA genes. In areas where no animal impact could be identified AOA was dominating over AOB. However, AOB abundance increased as the degree of animal impact enhances, becoming most dominant in the severely impacted site. Interestingly, the diversity of AOB was the highest in the severely impacted area, where AOA diversity was the lowest. Obviously the pressure imposed by altered environmental conditions created by cattle husbandry lead to the selection of AOB and AOA populations, adapted to alkaline pH and higher ammonia concentration.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Soil Ecology - Volume 77, May 2014, Pages 68-71
نویسندگان
, , , , , , ,