scholarly journals Conditionally rare taxa contribute but do not account for prokaryotic community changes in soils

2017 ◽  
Author(s):  
Rachel Kaminsky ◽  
Sergio E. Morales

AbstractConditionally rare taxa (CRT) are thought to greatly impact microbial community turnover across many environments, but little is known about their role in soils. Here, we investigate the contribution of CRT to whole community variation over space and time in a series of geographically distinct soils dedicated to three agricultural practices of differing intensities and sampled over a full seasonal cycle. We demonstrate that soil CRT do not account for observed total community changes, but that these rare taxa can be modified by spatiotemporal filters.

2018 ◽  
Vol 18 (1) ◽  
Author(s):  
Andrea Bagi ◽  
Even Sannes Riiser ◽  
Hilde Steine Molland ◽  
Bastiaan Star ◽  
Thomas H. A. Haverkamp ◽  
...  

2021 ◽  
Author(s):  
Sally Diatta ◽  
Hassna Mboup-Founoune ◽  
Sidy Diakhaté ◽  
Diégane Diouf

<p>Our planet is marked by significant climatic variations, particularly with the warming of temperatures and the variation in rainfall. In sub-Saharan Africa, the impacts of climate change are more pronounced because agriculture is highly dependent on climate, hence its vulnerability to climate variability (Vanluwe et al., 2011). In the context of changing environmental conditions, the use of innovative agricultural practices to contribute to plant adaptation is necessary to support food security challenges. Agroecological practices to improve crop yields and sustainable soil fertility management. Soil is the main reservoir of biodiversity as it hosts a very high diversity of interacting living species, which can be distinguished according to their size, macrofauna, mesofauna and microorganisms that constitute a particularly important component of soil (Brady and Weil, 2002), particularly for the provision of ecosystem services to humans. This work is therefore interested in studying the contribution of arbuscular mycorrhizal fungi (AMF) to the growth of millet (<em>Pennisetum glaucum</em>) under warmer temperature conditions and the behaviour of microbial community in soil of millet growing.</p><p>Millet is grown in a plant climate chamber and inoculated with a selected mycorrhizal strain.  These millet growing conditions were carried out in two different temperatures: 32°C (normal temperature) and 37°C (warmer temperature).</p><p>The results showed that in conditions of warmer temperature the inoculation induced a significant vegetative growth of millet even with a low intensity of mycorrhization and so it improves microbial nutrient mineralization mediate vegetation growth.</p><p>In soil of millet growing, a significant increase in microbial biomass with 42.7 in warmer temperature condition compared to control temperature 16.7. Results of DGGE shows also a soil abundance and SMB diversity of the total fungal community was noted under warmer temperature condition.</p><p>This study showed that climate variation may affect soil symbiosis but not the potential for promoting plant growth of fungi. The use of arbuscular mycorrhizal fungi on the one hand as a biofertilizer can be an alternative in the context of reducing chemical inputs in agriculture and developing ecologically intensive agriculture (EIA) and on the other hand an adaptive practice  to apprehend the predicted climate changes.</p>


2014 ◽  
Vol 26 (11) ◽  
pp. 3281-3286
Author(s):  
Hong Qi Wang ◽  
Yicun Zhao ◽  
Fei Hua

2010 ◽  
Vol 45 (5) ◽  
pp. 473-477 ◽  
Author(s):  
Wen-Ching Chen ◽  
Wan-Nine Tseng ◽  
Jia-Lin Hsieh ◽  
Yei-Shung Wang ◽  
San-Lang Wang

Author(s):  
Valeria Ventorino ◽  
Anna De Marco ◽  
Olimpia Pepe ◽  
Amalia Virzo De Santo ◽  
Giancarlo Moschetti

2019 ◽  
Vol 47 (3) ◽  
pp. 343-349
Author(s):  
Jeong A Kim ◽  
Zhuang Yao ◽  
Hyun-Jin Kim ◽  
Jeong Hwan Kim

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