Biological indicators for evaluating soil quality improvement in a soil degraded by erosion processes

Oneţ, Aurelia; Dincă, Lucian; Grenni, Paola; Laslo, Vasile; Teușdea, Alin Cristian; Vasile, D.; Enescu, Raluca; Crisan, Vlad

doi:10.1007/s11368-018-02236-9

Cited by 41 publications

(28 citation statements)

References 48 publications

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“…Nevertheless, its effect was not clear in fungi a-diversity in soil and bacteria and fungi a-diversity in roots. In a recent study dedicated to assessing the quality of different soil samples degraded by erosion using biological indicators, a seaweed extract biostimulant based on Macrocystis pyrifera (8 mL) enhanced the hydrogenase activity (mg TPF/10 g) of the soil sample (10 g) having the lowest activity by 32% in comparison with the control [65]. Furthermore, a seaweed extract biostimulant Plants 2020, 9, 359 9 of 23 based on Lessonia nigrescens and Lessonia flavicans applied at 40 g·kg −1 of replant soil on Malus hupehensis Rehd.…”

Section: Effect Of Seaweed Extract On the Beneficial Microbiome Of Plmentioning

confidence: 99%

Trends in Seaweed Extract Based Biostimulants: Manufacturing Process and Beneficial Effect on Soil-Plant Systems

Boukhari

Barakate

Bouhia

et al. 2020

Plants

191

129

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The time when plant biostimulants were considered as “snake oil” is erstwhile and the skepticism regarding their agricultural benefits has significantly faded, as solid scientific evidences of their positive effects are continuously provided. Currently plant biostimulants are considered as a full-fledged class of agri-inputs and highly attractive business opportunity for major actors of the agroindustry. As the dominant category of the biostimulant segment, seaweed extracts were key in this growing renown. They are widely known as substances with the function of mitigating abiotic stress and enhancing plant productivity. Seaweed extracts are derived from the extraction of several macroalgae species, which depending on the extraction methodology lead to the production of complex mixtures of biologically active compounds. Consequently, plant responses are often inconsistent, and precisely deciphering the involved mechanism of action remains highly intricate. Recently, scientists all over the world have been interested to exploring hidden mechanism of action of these resources through the employment of multidisciplinary and high-throughput approaches, combining plant physiology, molecular biology, agronomy, and multi-omics techniques. The aim of this review is to provide fresh insights into the concept of seaweed extract (SE), through addressing the subject in newfangled standpoints based on current scientific knowledge, and taking into consideration both academic and industrial claims in concomitance with market’s requirements. The crucial extraction process as well as the effect of such products on nutrient uptake and their role in abiotic and biotic stress tolerance are scrutinized with emphasizing the involved mechanisms at the metabolic and genetic level. Additionally, some often overlooked and indirect effects of seaweed extracts, such as their influence on plant microbiome are discussed. Finally, the plausible impact of the recently approved plant biostimulant regulation on seaweed extract industry is addressed.

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Section: Effect Of Seaweed Extract On the Beneficial Microbiome Of Plmentioning

confidence: 99%

Trends in Seaweed Extract Based Biostimulants: Manufacturing Process and Beneficial Effect on Soil-Plant Systems

Boukhari

Barakate

Bouhia

et al. 2020

Plants

191

129

View full text Add to dashboard Cite

show abstract

“…Ji et al (2017) reported that the P solubility was higher after a seaweed biostimulant application but without affecting the microbial communities. The positive action of seaweed biostimulants indicated greater activity of hydrogenase (Onet et al, 2019), invertase, urease, proteinase, and phosphatase . These enzymes, involved in the carbon, nitrogen, and phosphor cycles, explain the better nutrition status of the plants.…”

Section: Biostimulants Derived From Seaweedmentioning

confidence: 99%

Plant Microbiota Beyond Farming Practices: A Review

Delitte

Caulier

Bragard

et al. 2021

Front. Sustain. Food Syst.

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Plants have always grown and evolved surrounded by numerous microorganisms that inhabit their environment, later termed microbiota. To enhance food production, humankind has relied on various farming practices such as irrigation, tilling, fertilization, and pest and disease management. Over the past few years, studies have highlighted the impacts of such practices, not only in terms of plant health or yields but also on the microbial communities associated with plants, which have been investigated through microbiome studies. Because some microorganisms exert beneficial traits that improve plant growth and health, understanding how to modulate microbial communities will help in developing smart farming and favor plant growth-promoting (PGP) microorganisms. With tremendous cost cuts in NGS technologies, metagenomic approaches are now affordable and have been widely used to investigate crop-associated microbiomes. Being able to engineer microbial communities in ways that benefit crop health and growth will help decrease the number of chemical inputs required. Against this background, this review explores the impacts of agricultural practices on soil- and plant-associated microbiomes, focusing on plant growth-promoting microorganisms from a metagenomic perspective.

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“…It is generally believed that climate change affects soil erosion in both direct and indirect ways. The direct impacts are mainly realized through precipitation, in terms of the amount of precipitation, the intensity, and its temporal and spatial distribution [ 2 , 10 ], while the indirect impacts are mainly caused by the joint action of meteorological factors such as air temperature and wind speed, which influences vegetation, soil moisture content, and soil microorganisms [ 10 , 11 , 12 ]. Hence, it may be said that climate change has both positive and negative effects on soil erosion.…”

Section: Introductionmentioning

confidence: 99%

Grid-Scale Impact of Climate Change and Human Influence on Soil Erosion within East African Highlands (Kagera Basin)

Yang

et al. 2021

IJERPH

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Under global climate change and pressure from human activities, soil erosion is becoming a major concern in the quest for regional sustainable development in the Kagera basin (KB). However, few studies in this region have comprehensively considered the impact of climate change and human influence on soil erosion, and the associated processes are unclear. Based on the premise of quantifying climate change, human influence, and soil erosion, this study undertook a neighborhood analysis as the theoretical support, for a grey relation analysis which was conducted to realize the qualitative assessment of the influence of climate change and human activities on soil erosion. The results show that 90.32% of the KB saw climate change as having a greater influence on soil erosion than human influence, with the remaining area 9.68% seeing human influence having a greater impact than climate change, mainly as a result of the effect of rangeland and farmland. The average soil erosion rate of the KB shows a very low level (10.54 t ha−1 yr−1), with rangeland and farmland being the main land use/land cover (LULC) types that see soil loss, followed by forest, wetland, and built-up areas. The climate change trends of the KB show the most dramatic changes in the northeast and southwest, gradually decreasing towards the line crossing from the Birunga National Park (Rwanda) to the Keza district (Tanzania). The human influence intensity (HII) shows a high level in the KB (21.93), where it is higher in the west and lower in the east of the basin.

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Biological indicators for evaluating soil quality improvement in a soil degraded by erosion processes

Cited by 41 publications

References 48 publications

Trends in Seaweed Extract Based Biostimulants: Manufacturing Process and Beneficial Effect on Soil-Plant Systems

Trends in Seaweed Extract Based Biostimulants: Manufacturing Process and Beneficial Effect on Soil-Plant Systems

Plant Microbiota Beyond Farming Practices: A Review

Grid-Scale Impact of Climate Change and Human Influence on Soil Erosion within East African Highlands (Kagera Basin)

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