Eighty years of maize breeding alters plant nitrogen acquisition but not rhizosphere bacterial community composition

2018 ◽  
Vol 431 (1-2) ◽  
pp. 53-69 ◽  
Author(s):  
Bryan D. Emmett ◽  
Daniel H. Buckley ◽  
Margaret E. Smith ◽  
Laurie E. Drinkwater
Keyword(s):  
Bacterial Community ◽  
Community Composition ◽  
Bacterial Community Composition ◽  
Maize Breeding ◽  
Plant Nitrogen ◽  
Nitrogen Acquisition ◽  
Rhizosphere Bacterial Community

scholarly journals Nutrient recovery from anaerobic digestion of food waste: impacts of digestate on plant growth and rhizosphere bacterial community composition and potential function in ryegrass

2020 ◽  
Vol 56 (7) ◽  
pp. 973-989
Author(s):  
Ai-Tian Ren ◽  
Lynette K. Abbott ◽  
Yinglong Chen ◽  
You-Cai Xiong ◽  
Bede S. Mickan
Keyword(s):  
Bacterial Community ◽  
Ammonium Nitrate ◽  
Community Composition ◽  
Bacterial Community Composition ◽  
N Cycling ◽  
Fungal Hyphae ◽  
Urea Ammonium Nitrate ◽  
C And N ◽  
Rhizosphere Bacterial Community ◽  
C And N Cycling

Abstract Global food wastage equates to about 1.3 billion tons per year, which causes serious environmental impacts. The objective of this study was to evaluate the influences of addition of digestate from food waste in comparison to a synthetic liquid urea ammonium nitrate solution on plant growth, rhizosphere bacterial community composition and diversity, and hyphal abundance of arbuscular mycorrhizal (AM) fungi. Plant and soil samples were collected at 25, 50, and 75 days after seedling emergence. Annual ryegrass growth was significantly increased by both liquid urea ammonium nitrate and digestate, and digestate was just as effective as liquid urea ammonium nitrate. Additionally, digestate (50 kg N ha−1) significantly increased AM fungal hyphae density. Liquid urea ammonium nitrate (50 kg N ha−1) significantly decreased AM fungal hyphae density compared with liquid urea ammonium nitrate (25 kg N ha−1) at DAE 75. Digestate and liquid urea ammonium nitrate applications significantly shifted the bacterial community composition and OTU richness and changed the abundance of microbial C and N-cycling genes, while application rates had no significant effect. Structural equation modeling showed that digestate and UAN addition both directly and indirectly affected bacterial, C and N cycling genes community composition; the indirect effects were related to increased soil NO3− content and reduced pH. This study showed that the use of digestate as a soil amendment can be environmentally effective and can provide a sustainable supply of nutrients that increases soil organic C. Moreover, the use of digestate can readily be incorporated into agricultural practices with potentially less impact on soil microflora diversity and function than conventional fertilizers.

scholarly journals Rhizosphere bacterial community composition responds to arbuscular mycorrhiza, but not to reductions in microbial activity induced by foliar cutting

2008 ◽  
Vol 64 (1) ◽  
pp. 78-89 ◽  
Author(s):  
Mette VestergÃ¥rd ◽  
Frédéric Henry ◽  
Juan Ignacio Rangel-Castro ◽  
Anders Michelsen ◽  
James I. Prosser ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Arbuscular Mycorrhiza ◽  
Microbial Activity ◽  
Community Composition ◽  
Bacterial Community Composition ◽  
Rhizosphere Bacterial Community

scholarly journals Agricultural Management Affects the Active Rhizosphere Bacterial Community Composition and Nitrification

mSystems ◽  
2021 ◽  
Author(s):  
Guillaume Bay ◽  
Conard Lee ◽  
Chiliang Chen ◽  
Navreet K. Mahal ◽  
Michael J. Castellano ◽  
...  
Keyword(s):  
Climate Change ◽  
Water Quality ◽  
Bacterial Community ◽  
Community Composition ◽  
Inorganic Nitrogen ◽  
Bacterial Community Composition ◽  
Agricultural Management ◽  
N Fertilizer ◽  
Low Diversity ◽  
Rhizosphere Bacterial Community

Crops in simplified, low-diversity agroecosystems assimilate only a fraction of the inorganic nitrogen (N) fertilizer inputs. Much of this N fertilizer is lost to the environment as N oxides, which degrade water quality and contribute to climate change and loss of biodiversity.

Rhizosphere bacterial community composition in natural stands of Carex arenaria (sand sedge) is determined by bulk soil community composition

2005 ◽  
Vol 37 (2) ◽  
pp. 349-357 ◽  
Author(s):  
Annelies S. de Ridder-Duine ◽  
George A. Kowalchuk ◽  
Paulien J.A. Klein Gunnewiek ◽  
Wiecher Smant ◽  
Johannes A. van Veen ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Community Composition ◽  
Bacterial Community Composition ◽  
Bulk Soil ◽  
Soil Community ◽  
Carex Arenaria ◽  
Rhizosphere Bacterial Community ◽  
Natural Stands
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