Organic Amendments to Avocado Crops Induce Suppressiveness and Influence the Composition and Activity of Soil Microbial Communities

Bonilla, Nuria; Vida, Carmen; Martínez-Alonso, Maira; Landa, Blanca B.; Gaju, Núria; Cazorla, Francisco M.; Vicente, Antonio de

doi:10.1128/aem.03787-14

Cited by 42 publications

(39 citation statements)

References 67 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Enzyme fingerprinting using APIZYM assay. The relative activities for soil enzyme were measured by a semi-quantitative APIZYM system (Biomerieus, USA) according to the manufacturer's protocol 16,46,47 . The APIZYM kit supplied with 20 microcupules, contains dehydrated chromogenic substrates for different hydrolytic enzymes and control ( Supplementary Table S5).…”

Section: Methodsmentioning

confidence: 99%

Steel slag amendment impacts on soil microbial communities and activities of rice (Oryza sativa L.)

Das

Gwon

Khan

et al. 2020

Sci Rep

View full text Add to dashboard Cite

With the increase in iron/steel production, the higher volume of by-products (slag) generated necessitates its efficient recycling. Because the Linz-Donawitz (LD) slag is rich in silicon (Si) and other fertilizer components, we aim to evaluate the impact of the LD slag amendment on soil quality (by measuring soil physicochemical and biological properties), plant nutrient uptake, and strengthens correlations between nutrient uptake and soil bacterial communities. We used 16 S rRNA illumine sequencing to study soil bacterial community and APIZYM assay to study soil enzymes involved in C, N, and P cycling. The LD slag was applied at 2 Mg ha −1 to Japonica and indica rice cultivated under flooded conditions. The LD slag amendment significantly improved soil pH, plant photosynthesis, soil nutrient availability, and the crop yield, irrespective of cultivars. It significantly increased N, P, and Si uptake of rice straw. The slag amendment enhanced soil microbial biomass, soil enzyme activities and enriched certain bacterial taxa featuring copiotrophic lifestyles and having the potential role for ecosystem services provided to the benefit of the plant. The study evidenced that the short-term LD slag amendment in rice cropping systems is useful to improve soil physicochemical and biological status, and the crop yield. Soil enzyme activities.Labile carbon degrading enzymes such as α-glucosidase, β-glucosidase, α-galactosidase, β-galactosidase, α-mannosidase, and α-fucosidase which can degrade maltose, cellobiose, melibiose, lactose, mannose, and fructose, respectively, markedly increased in the slag amendment treatments in comparison to the unamended treatments, irrespective of rice cultivars (Fig. 1). Likewise, recalcitrant carbon degrading enzymes such as esterase, lipase, and N-acetyl-β-glucosaminidase which can degrade hemicelluloses and polysaccharide respectively, increased by the slag amendment. Notably, the increase was more in labile carbon degrading enzymes (mostly β-glucosidase, and β-galactosidase) compared to the recalcitrant carbon degrading enzymes. The LD slag amendment also noticeably increased soil enzyme activities involved in nitrogen cycling (i.e., leucine-aminopeptidase and trypsin) and phosphorus cycling (i.e., alkaline phosphomonoesterase and phosphohydrolase). Notably, the increase in soil enzyme activities was more prominent in Indica in comparison to Japonica rice variety. Among the C cycling enzyme, β-glucosidase, and β-galactosidase were dominant, whereas among the N cycling enzyme, aminopeptidase and among the P cycling enzyme, alkaline phosphomonoesterase were dominant in the paddy soil (Fig. 1).Relative abundance and diversity of rhizosphere bacterial community. The most abundant (≥ 1.0%) bacterial phyla across treatments were Proteobacteria (34-48%), Fermicutes (15-17%), Actinobacteria (7-18%), Acidobacteria (3-7%), Bacteroidetes (2-6%), Nitrospirae (2-3%), and Chloroflexi (1-4%). The LD slag amendment significantly (P < 0.05) increased the relative abundance of Proteobacteria by 28.9 and 2...

show abstract

Section: Methodsmentioning

confidence: 99%

Steel slag amendment impacts on soil microbial communities and activities of rice (Oryza sativa L.)

Das

Gwon

Khan

et al. 2020

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Community-level physiological profiling assay. Community-level physiological profiles (CLPPs) of each rhizosphere were obtained by use of Biolog EcoPlates (Biolog, Inc., Hayward, CA) as previously described (31), with some modifications. Briefly, 3-g samples of rhizospheres from different growth stages of sprouts and microgreens were transferred to individual sterile Whirl-Pak filter bags filled with 30 ml of saline solution (0.85% NaCl).…”

Section: Recovery and Enumeration Of Salmonella From Alfalfa Sprouts mentioning

confidence: 99%

Plant-Microbe and Abiotic Factors Influencing Salmonella Survival and Growth on Alfalfa Sprouts and Swiss Chard Microgreens

Reed

Ferreira

Bell

et al. 2018

Appl Environ Microbiol

View full text Add to dashboard Cite

17Microgreens, like sprouts, are relatively fast growing, and generally consumed raw. Moreover, as 18 observed in sprouts, microbial contamination from preharvest sources could also be present in 19 the production of microgreens. In this study, two Salmonella enterica serovars (Hartford and 20 Cubana) applied, at multiple inoculation levels, were evaluated for survival and growth on alfalfa of Salmonella in both alfalfa sprouts and microgreens was largely affected by inoculation level.31 Surprisingly, growing medium was found to play an important role in Salmonella survival and 32 growth in microgreens. CLPP analysis showed significant changes in the microbial community 33 metabolic diversity during sprouting for alfalfa sprouts, but few temporal changes were seen in 34 microgreens. The data suggest that the change in rhizosphere bacterial functional diversity was 35 host-dependent but independent of Salmonella contamination.

show abstract

“…The high competition-sensitivity of certain species, such as Fusarium, suggests that fungi are unable to compete with the increased microbial diversity of soils receiving organic soil amendments, which leads to a reduced disease incidence in the field. Even though there is recurring evidence that organic fertility amendments increase disease suppression, it must be clarified that no single soil additive has shown significant disease suppression against all pathogens and that a pathogen may not behave similarly with all organic fertility amendments [58][59][60]. Additionally, the increased biodiversity, in both the surrounding landscape and soil common under organic management acts as a form of biological compensation for heavy insecticide and fungicide use.…”

Section: Insecticides and Fungicidesmentioning

confidence: 99%

Organic versus Conventional Cropping Sustainability: A Comparative System Analysis

Fess

Benedito

2018

Sustainability

View full text Add to dashboard Cite

Abstract:We are at a pivotal time in human history, as the agricultural sector undergoes consolidation coupled with increasing energy costs in the context of declining resource availability. Although organic systems are often thought of as more sustainable than conventional operations, the lack of concise and widely accepted means to measure sustainability makes coming to an agreement on this issue quite challenging. However, an accurate assessment of sustainability can be reached by dissecting the scientific underpinnings of opposing production practices and crop output between cropping systems. The purpose of this review is to provide an in-depth and comprehensive evaluation of modern global production practices and economics of organic cropping systems, as well as assess the sustainability of organic production practices through the clarification of information and analysis of recent research. Additionally, this review addresses areas where improvements can be made to help meet the needs of future organic producers, including organic-focused breeding programs and necessity of coming to a unified global stance on plant breeding technologies. By identifying management strategies that utilize practices with long-term environmental and resource efficiencies, a concerted global effort could guide the adoption of organic agriculture as a sustainable food production system.

show abstract

Organic Amendments to Avocado Crops Induce Suppressiveness and Influence the Composition and Activity of Soil Microbial Communities

Cited by 42 publications

References 67 publications

Steel slag amendment impacts on soil microbial communities and activities of rice (Oryza sativa L.)

Steel slag amendment impacts on soil microbial communities and activities of rice (Oryza sativa L.)

Plant-Microbe and Abiotic Factors Influencing Salmonella Survival and Growth on Alfalfa Sprouts and Swiss Chard Microgreens

Organic versus Conventional Cropping Sustainability: A Comparative System Analysis

Contact Info

Product

Resources

About