کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8365215 | 1542619 | 2013 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Protozoa stimulate N uptake and growth of arbuscular mycorrhizal plants
ترجمه فارسی عنوان
متابولیسم جذب و رشد گیاهان مایکوریزه آربوسکولار را تحریک می کند
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
دانش خاک شناسی
چکیده انگلیسی
Roots of most terrestrial plants interact with arbuscular mycorrhizal (AM) fungi and soil protozoa with each individually increasing nitrogen (N) supply to plants and plant growth. We investigated if AM fungi and protozoa interactively affect plant N acquisition and growth. We used stable isotopes (15N, 13C) to assess plant N uptake, C fixation and C partitioning. Shifts in the microbial community structure were evaluated by analysing phospholipid fatty acids. Protozoa and AM fungi enhanced plant N uptake. Protozoa mobilized N from bacterial biomass and AM fungi increased the translocation of the mobilized N to the host plant; if both were present, plant biomass, C fixation and C allocation to roots increased twofold. Protozoa alone and in the presence of AM fungi altered microbial activity and community structure in the rhizosphere. The results indicate that plant N uptake via mycorrhizal symbiosis strongly benefits from the presence of protozoa.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Soil Biology and Biochemistry - Volume 65, October 2013, Pages 204-210
Journal: Soil Biology and Biochemistry - Volume 65, October 2013, Pages 204-210
نویسندگان
Robert Koller, Stefan Scheu, Michael Bonkowski, Christophe Robin,