Assessing the Impact of Rice Cultivation and Off-Season Period on Dynamics of Soil Enzyme Activities and Bacterial Communities in Two Agro-Ecological Regions of Mozambique

Ezeokoli, Obinna T.; Nuaila, Valter Nuno Antόnio; Obieze, Chinedu Christopher; Muetanene, Belo Afonso; Fraga, Irene; Tesinde, Maria Natalia; Ndayiragije, Alexis; Coutinho, João; Melo, Ana M. P.; Adeleke, Rasheed; Ribeiro‐Barros, Ana I.; Fangueiro, David

doi:10.3390/agronomy11040694

Cited by 8 publications

(4 citation statements)

References 145 publications

(168 reference statements)

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“…In fact, a positive correlation of CH 4 emission with the activity of UR was observed (r = 0.681, p < 0.01). The process starts as urea processing by microorganisms imply C consumption, thus causing the emission of CH 4 [46]. Such a process was strongly enhanced when the application of N fertilizer was preceded by the organic amendment (C-TPOW).…”

Section: Emissions Chmentioning

confidence: 99%

Direct and Residual Impacts of Olive-Mill Waste Application to Rice Soil on Greenhouse Gas Emission and Global Warming Potential under Mediterranean Conditions

et al. 2022

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The olive oil industry produces high amounts of waste, which need to be valorized in a more sustainable way as an alternative to its traditional use as an energy source, with high associated CO2 emissions. Rice (Oryza sativa L.) is one of the most important crops for global food security; however, the traditional cropping systems under flooding lead to an important decrease of soil quality, as well as relevant emissions of greenhouse gases (GHG). The aim of this study was to assess the GHG emission from rice fields amended with composted two-phase olive mill waste (C-TPOW), in Mediterranean conditions. A field experiment was carried in rice cultivated by the traditional system, either unamended (Control) or amended with C-TPOW (Compost). GHG emissions were measured over three years following a single C-TPOW application (80 Mg ha−1 only in the first year of study), so that the results found in the first and third years correspond to its direct and residual effects, respectively. Compost decreased CO2 emissions relative to Control by 13% and 20% in the first and third year after C-TPOW application, respectively. However, in the case of CH4 and N2O, increases in the total cumulative emission were recorded in Compost relative to Control throughout the study, in agreement with the highest β-glucosidase and urease activity observed in the amended soil. The values of global warming potential (GWP) and yield-scaled GWP increased by 14% and 11%, respectively, in Compost relative to Control in the first year, but no significant differences between treatments were observed three years after application for GWP and yield-scaled GWP. Therefore, the use of C-TPOW as soil amendment in rice fields could be a good option since its impact on GHG emissions seems to decrease over time, while the benefit for soil remained clear even after 3 years.

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Section: Emissions Chmentioning

confidence: 99%

Direct and Residual Impacts of Olive-Mill Waste Application to Rice Soil on Greenhouse Gas Emission and Global Warming Potential under Mediterranean Conditions

et al. 2022

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“…The construction of bacterial ecological networks can reveal information regarding community efficiency, complexity, and the role of keystone phylotypes [78]. The two networks found in this study were non-random and differ between fire regimes.…”

Section: New Insights From Miombo Bacterial Ecological Networkmentioning

confidence: 73%

Linking Bacterial Rhizosphere Communities of Two Pioneer Species, Brachystegia boehmii and B. spiciformis, to the Ecological Processes of Miombo Woodlands

António

Obieze

Jacinto

et al. 2022

Forests

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Miombo is the most extensive ecosystem in southern Africa, being strongly driven by fire, climate, herbivory, and human activity. Soils are major regulating and supporting services, sequestering nearly 50% of the overall carbon and comprising a set of yet unexploited functions. In this study, we used next-generation Illumina sequencing to assess the patterns of bacterial soil diversity in two pioneer Miombo species, Brachystegia boehmii and Brachystegia spiciformis, along a fire gradient, in ferric lixisol and cambic arenosol soils. In total, 21 phyla, 51 classes, 98 orders, 193 families, and 520 genera were found, revealing a considerably high and multifunctional diversity with a strong potential for the production of bioactive compounds and nutrient mobilization. Four abundant genera characterized the core microbiome among plant species, type of soils, or fire regime: Streptomyces, Gaiella, Chthoniobacter, and Bacillus. Nevertheless, bacterial networks revealed a higher potential for mutualistic interactions and transmission of chemical signals among phylotypes from low fire frequency sites than those from high fire frequency sites. Ecological networks also revealed the negative effects of frequent fires on the complexity of microbial communities. Functional predictions revealed the core “house-keeping” metabolisms contributing to the high bacterial diversity found, suggesting its importance to the functionality of this ecosystem.

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“…Chloroflexi are facultative anaerobic and have a recognized role as heterotrophic oligotrophs in soils, having the ability to survive on recalcitrant plant polymers [47] [48]. In the agroecosystems, Actinobacteria contribute to nutrient cycling and the degradation of organic compounds, including pesticides and herbicides [49] [50] [51] [52]. For archaea, the relative abundance revealed that, the preponderant class was Methanomicrobia followed by Methanobacteria, Thaumarchaeota and Crenarchaeota which all accounted for an average of 80% of the total archaeal sequences in the irrigated rice field.…”

Section: Relative Abundance Of Bacterial and Archaeal Communitiesmentioning

confidence: 99%

Effect of Long-Term Inorganic Fertilization on Diversity and Abundance of Bacterial and Archaeal Communities at Tillage in Irrigated Rice Field

Dondjou¹,

Fankem²,

Diédhiou³

et al. 2023

ABB

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Results of publication (only one response allowed): X are still valid.  were found to be overall invalid.Author's conduct (only one response allowed):  honest error  academic misconduct X none (not applicable in this case -e.g. in case of editorial reasons) * Also called duplicate or repetitive publication. Definition: "Publishing or attempting to publish substantially the same work more than once." HistoryExpression of Concern:  yes, date: yyyy-mm-dd X no Correction:  yes, date: yyyy-mm-dd X no Comment:The paper does not meet the standards of "Advances in Bioscience and Biotechnology".This article has been retracted to straighten the academic record. In making this decision the Editorial Board follows COPE's Retraction Guidelines. Aim is to promote the circulation of scientific research by offering an ideal research publication platform with due consideration of internationally accepted standards on publication ethics. The Editorial Board would like to extend its sincere apologies for any inconvenience this retraction may have caused.Editor guiding this retraction: Prof. Abass Alavi (EiC, ABB)

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Assessing the Impact of Rice Cultivation and Off-Season Period on Dynamics of Soil Enzyme Activities and Bacterial Communities in Two Agro-Ecological Regions of Mozambique

Cited by 8 publications

References 145 publications

Direct and Residual Impacts of Olive-Mill Waste Application to Rice Soil on Greenhouse Gas Emission and Global Warming Potential under Mediterranean Conditions

Direct and Residual Impacts of Olive-Mill Waste Application to Rice Soil on Greenhouse Gas Emission and Global Warming Potential under Mediterranean Conditions

Linking Bacterial Rhizosphere Communities of Two Pioneer Species, Brachystegia boehmii and B. spiciformis, to the Ecological Processes of Miombo Woodlands

Effect of Long-Term Inorganic Fertilization on Diversity and Abundance of Bacterial and Archaeal Communities at Tillage in Irrigated Rice Field

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