Response of microbial communities and enzyme activities to amendments in saline-alkaline soils

Shi, Shaohua; Tian, Lei; Nasir, Fahad; Bahadur, Ali; Batool, Asfa; Luo, Shasha; Yang, Fan; Wang, Zhichun; Tian, Chunjie

doi:10.1016/j.apsoil.2018.11.003

Cited by 122 publications

(63 citation statements)

References 46 publications

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“…Soil, as the natural medium for bacteria and fungi, provides C and N sources needed by these microbes [117,118]; however, these C and N sources are normally provided by plants, further illustrating the mutual relationship between plants and microbes. Furthermore, the soil characteristics differ due to the flora grown on it, the microbes in the soil, and soil management by humans [19,20,119].…”

Section: Why Plants Need Beneficial Microbiotamentioning

confidence: 99%

“…Furthermore, a few studies have reported that both artificial management of plant growth environment and conditions, and plant domestication affect the community structure of rhizosphere and endosphere microbiomes [27,119,146,147]. Wild plant species preserve more diversity in associated microbiota for their survival against stress resistance than the domesticated crops.…”

Section: Influences Of the Community Compositions Of Rhizosphere Phymentioning

confidence: 99%

“…Cornejo et al revealed that AMFs assisted Oenothera picensis in resisting copper stress and helped the bioremediation of copper-polluted soil [130]. Saline-sodic soils have been studied for several years to improve their soil characteristics for crop cultivation with higher productivity [19,119]. Chemical and biological ameliorations of saline-sodic soils are the most effective ways; however, both methods affect the compositions of soil microbiomes.…”

Section: Applications Of Individual Microbes For Improvement Of Crop mentioning

confidence: 99%

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Research Advances of Beneficial Microbiota Associated with Crop Plants

Tian

Lin

Tian

et al. 2020

IJMS

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Plants are associated with hundreds of thousands of microbes that are present outside on the surfaces or colonizing inside plant organs, such as leaves and roots. Plant-associated microbiota plays a vital role in regulating various biological processes and affects a wide range of traits involved in plant growth and development, as well as plant responses to adverse environmental conditions. An increasing number of studies have illustrated the important role of microbiota in crop plant growth and environmental stress resistance, which overall assists agricultural sustainability. Beneficial bacteria and fungi have been isolated and applied, which show potential applications in the improvement of agricultural technologies, as well as plant growth promotion and stress resistance, which all lead to enhanced crop yields. The symbioses of arbuscular mycorrhizal fungi, rhizobia and Frankia species with their host plants have been intensively studied to provide mechanistic insights into the mutual beneficial relationship of plant–microbe interactions. With the advances in second generation sequencing and omic technologies, a number of important mechanisms underlying plant–microbe interactions have been unraveled. However, the associations of microbes with their host plants are more complicated than expected, and many questions remain without proper answers. These include the influence of microbiota on the allelochemical effect caused by one plant upon another via the production of chemical compounds, or how the monoculture of crops influences their rhizosphere microbial community and diversity, which in turn affects the crop growth and responses to environmental stresses. In this review, first, we systematically illustrate the impacts of beneficial microbiota, particularly beneficial bacteria and fungi on crop plant growth and development and, then, discuss the correlations between the beneficial microbiota and their host plants. Finally, we provide some perspectives for future studies on plant–microbe interactions.

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Section: Why Plants Need Beneficial Microbiotamentioning

confidence: 99%

Section: Influences Of the Community Compositions Of Rhizosphere Phymentioning

confidence: 99%

Section: Applications Of Individual Microbes For Improvement Of Crop mentioning

confidence: 99%

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Research Advances of Beneficial Microbiota Associated with Crop Plants

Tian

Lin

Tian

et al. 2020

IJMS

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“…These authors [109] concluded that organic manures can "engineer" the soil ecosystem by selectively modifying the environment, thus enhancing ecosystem sustainability. The beneficial impact of increasing microbial diversity and activity, through the continuous application of organic amendments, on the restoration of saline soils was recently highlighted [110]. The effect of 10 and 20 years of continuous organic farming versus conventional farming practices on agricultural soil health was studied [111], reporting a stimulation of soil ecosystem functioning under organic management which was driven by the alteration of the soil microbial composition rather than by changes in species richness.…”

Section: Beneficial Effects Of Organic Amendmentsmentioning

confidence: 99%

“…Notably, changes in soil microbial structural and functional diversity were reported after the incorporation of a wide variety of organic amendments, including crop residues [113,114], manures [110,115], biosolids [103,116], composted waste [112,117], and digestates [106,118]. These changes were identified through the utilization of different techniques: community-level physiological profiling [64,115,119], phospholipid fatty-acid analysis [89,100,115], Sanger sequencing [109], and next-generation sequencing [64,111,117,120].…”

Section: Beneficial Effects Of Organic Amendmentsmentioning

confidence: 99%

Potential Benefits and Risks for Soil Health Derived From the Use of Organic Amendments in Agriculture

2019

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The use of organic amendments in agriculture is a common practice due to their potential to increase crop productivity and enhance soil health. Indeed, organic amendments of different origin and composition (e.g., animal slurry, manure, compost, sewage sludge, etc.) can supply valuable nutrients to the soil, as well as increase its organic matter content, with concomitant benefits for soil health. However, the application of organic amendments to agricultural soil entails a variety of risks for environmental and human health. Organic amendments often contain a range of pollutants, including heavy metals, persistent organic pollutants, potential human pathogens, and emerging pollutants. Regarding emerging pollutants, the presence of antibiotic residues, antibiotic-resistant bacteria, and antibiotic-resistance genes in agricultural amendments is currently a matter of much concern, due to the concomitant risks for human health. Similarly, currently, the introduction of microplastics to agricultural soil, via the application of organic amendments (mainly, sewage sludge), is a topic of much relevance, owing to its magnitude and potential adverse effects for environmental health. There is, currently, much interest in the development of efficient strategies to mitigate the risks associated to the application of organic amendments to agricultural soil, while benefiting from their numerous advantages.

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