دورية أكاديمية
أعرض في EDS

Seasonal and long-term effects of nutrient additions and liming on the nifH gene in cerrado soils under native vegetation.

التفاصيل البيبلوغرافية
العنوان: Seasonal and long-term effects of nutrient additions and liming on the nifH gene in cerrado soils under native vegetation.
المؤلفون: Silveira R; Cell Biology Department, Institute of Biology, University of Brasília, Brasília, DF 70910-900, Brazil., Mello TRB; Department of Ecology, Institute of Biology, University of Brasília, Brasília, DF 70910-900, Brazil., Sartori MRS; Department of Ecology, Institute of Biology, University of Brasília, Brasília, DF 70910-900, Brazil., Alves GSC; Cell Biology Department, Institute of Biology, University of Brasília, Brasília, DF 70910-900, Brazil., Fonseca FCA; Cell Biology Department, Institute of Biology, University of Brasília, Brasília, DF 70910-900, Brazil., Vizzotto CS; Cell Biology Department, Institute of Biology, University of Brasília, Brasília, DF 70910-900, Brazil., Krüger RH; Cell Biology Department, Institute of Biology, University of Brasília, Brasília, DF 70910-900, Brazil., Bustamante MMDC; Department of Ecology, Institute of Biology, University of Brasília, Brasília, DF 70910-900, Brazil.
المصدر: IScience [iScience] 2021 Mar 22; Vol. 24 (4), pp. 102349. Date of Electronic Publication: 2021 Mar 22 (Print Publication: 2021).
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Cell Press Country of Publication: United States NLM ID: 101724038 Publication Model: eCollection Cited Medium: Internet ISSN: 2589-0042 (Electronic) Linking ISSN: 25890042 NLM ISO Abbreviation: iScience Subsets: PubMed not MEDLINE
أسماء مطبوعة: Original Publication: [Cambridge, MA] : Cell Press, [2018]-
مستخلص: Biological nitrogen fixation (BNF) represents the main input source of N in tropical savannas. BNF could be particularly important for Brazilian savannas (known as Cerrado) that show a highly conservative N cycle. We evaluated the effects of seasonal precipitation and nutrient additions on the nifH gene abundance in soils from a long-term fertilization experiment in a Cerrado's native area. The experiment consists of five treatments: (1) control, (2) liming, (3) nitrogen (N), (4) nitrogen + phosphorus (NP), and (5) phosphorus (P) additions. The nifH gene sequence was related to Bradyrhizobium members. Seasonal effects on N-fixing potential were observed by a decrease in the nifH relative abundance from rainy to dry season in control, N, and NP treatments. A significant reduction in nifH abundance was found in the liming treatment in both seasons. The findings evidenced the multiple factors controlling the potential N-fixing by free-living diazotrophs in these nutrient-limited and seasonally dry ecosystems.
Competing Interests: The authors declare no competing interests.
(© 2021 The Authors.)
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فهرسة مساهمة: Keywords: Global Nutrient Cycle; Microbiology; Plant Ecology
تواريخ الأحداث: Date Created: 20210419 Latest Revision: 20210421
رمز التحديث: 20240628
مُعرف محوري في PubMed: PMC8044383
DOI: 10.1016/j.isci.2021.102349
PMID: 33870141
قاعدة البيانات: MEDLINE
الوصف
تدمد:2589-0042
DOI:10.1016/j.isci.2021.102349