The role of glomalin in mitigation of multiple soil degradation problems

Singh, Ashutosh Kumar; Zhu, Xiai; Chen, Chunfeng; Jian, Wu; Yang, Bin; Zakari, Sissou; Jiang, Xiao; Singh, Nandita; Liu, Wenjie

doi:10.1080/10643389.2020.1862561

Cited by 46 publications

(34 citation statements)

References 138 publications

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“…Another benefit attributed to 'glomalin' is soil carbon deposition and subsequent sequestration. Glomalin-related SPs are thought to represent c. 20% of the soil organic carbon and aid carbon sequestration by stabilising soil aggregates (Preger et al, 2007;Rotter et al, 2017;Singh et al, 2020). Some studies have reported that glomalin-related SPs are more recalcitrant than other forms of soil organic matter, including general AMF necromass, but the reason for this is unexplored (Rillig et al, 2001;Preger et al, 2007;Zhang et al, 2017).…”

Section: Glomalin-related Sp Extracts Contain a Complex Mixture Of Substancesmentioning

confidence: 99%

“…‘Glomalin’ abundance (commonly quantified as Bradford‐reactive SPs) has been correlated with many plant and soil health benefits, including soil aggregation, soil carbon sequestration, stabilising soil pollutants and improving plant growth under abiotic stress conditions, but there is a dearth of research providing a mechanistic explanation for these benefits (Wright & Anderson, 2000; Zhang et al ., 2017; Singh et al ., 2020). The most important benefit attributed to ‘glomalin’ is its impact on soil aggregation and soil water retention.…”

Section: What Can We Learn About Plant and Soil Health From The Extensive ‘Glomalin’ Literature?mentioning

confidence: 99%

“…‘Glomalin’ quickly became a sensation in the plant and soil health community. In the last 25 yr, hundreds of studies have ascribed numerous plant and soil health benefits to ‘glomalin’, including improving soil aggregation, soil carbon storage, soil nutrient content and distribution, soil biodiversity, heavy metal, and other pollutant chelation, and plant productivity (Rillig, 2004; Jansa et al ., 2020; Singh et al ., 2020). However, most work quantifying environmental ‘glomalin’ relies on nonspecific protein quantification of high‐temperature citrate extracts (HTCEs) (see Fig.…”

Section: Introductionmentioning

confidence: 99%

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A critical review of 25 years of glomalin research: a better mechanical understanding and robust quantification techniques are required

2021

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Arbuscular mycorrhizal fungi (AMF) are important contributors to both plant and soil health. Twentyfive years ago, researchers discovered 'glomalin', a soil component potentially produced by AMF, which was unconventionally extracted from soil and bound by a monoclonal antibody raised against Rhizophagus irregularis spores. 'Glomalin' can resist boiling, strong acids and bases, and protease treatment. Researchers proposed that 'glomalin' is a 60 kDa heat-shock protein produced by AMF, while others suggested that it is a mixture of soil organic materials that are not unique to AMF.Despite disagreements on the nature of 'glomalin', it has been consistently associated with a long list of plant and soil health benefits, including soil aggregation, soil carbon storage, and enhancing growth under abiotic stress. The benefits attributed to 'glomalin' have caused much excitement in the plant and soil health community; however, the mechanism(s) for these benefits have yet to be established.This review provides insights into the current understanding of the identity of 'glomalin', 'glomalin' quantification, and the associated benefits of 'glomalin'. We invite the community to think more critically about how glomalin-associated benefits are generated. We suggest a series of experiments to test hypotheses regarding the nature of 'glomalin' and associated health benefits.

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Section: Glomalin-related Sp Extracts Contain a Complex Mixture Of Substancesmentioning

confidence: 99%

Section: What Can We Learn About Plant and Soil Health From The Extensive ‘Glomalin’ Literature?mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A critical review of 25 years of glomalin research: a better mechanical understanding and robust quantification techniques are required

2021

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“…Mycorrhizal fungi improve soil aggregate stability thanks to the structure of the hyphal network which, as part of the soil matrix, directly contributes to the formation and maintenance of soil water-macroaggregates (Ji et al, 2019), providing a better infiltration and storage of water. In the case of AM fungi, another well-identified mechanism that improves soil aggregate stability by carbon sequestration is the release of the glycoprotein glomalin by the fungus acting as soil-superglue (Kumar Singh et al, 2020;.…”

Section: Droughtmentioning

confidence: 99%

Mycorrhizal Symbiosis for Better Adaptation of Trees to Abiotic Stress Caused by Climate Change in Temperate and Boreal Forests

Usman¹,

Ho-Plágaro²,

Frank³

et al. 2021

Front. For. Glob. Change

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Global climate changes have serious consequences on natural ecosystems and cause diverse environmental abiotic stressors that negatively affect plant growth and development. Trees are dependent on their symbiosis with mycorrhizal fungi, as the hyphal network significantly improves the uptake of water and essential mineral nutrients by colonized roots. A number of recent studies has enhanced our knowledge on the functions of mycorrhizal associations between fungi and plant roots. Moreover, a series of timely studies have investigated the impact and benefit of root symbioses on the adaptation of plants to climate change-associated stressors. Trees in temperate and boreal forests are increasingly exposed to adverse environmental conditions, thus affecting their durable growth. In this mini-review, we focus our attention on the role mycorrhizal symbioses play in attenuating abiotic stressors imposed on trees facing climatic changes, such as high temperatures, drought, salinity, and flooding.

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“…An important approach to optimize intercropping systems could be the use of biological additives such as plant growth‐promoting rhizobacteria (PGPR) and arbuscular mycorrhizal fungi (AMF). Inoculating plant species with PGPR and AMF could facilitate acquisition of nutrients that are heavily required by plants and economically expensive to supply from synthetic fertilizers, [ 6–10 ] improve carbon sequestration, [ 11 ] and improve seed yield and yield components of black cumin and fenugreek. Biofertilizers such as PGPR are extensively used in small‐scale agricultural systems and can play an important role in improving crop productivity through modifying physical and chemical properties of soil.…”

Section: Introductionmentioning

confidence: 99%

Optimizing Intercropping Systems of Black Cumin (Nigella sativa L.) and Fenugreek (Trigonella foenum‐graecum L.) through Inoculation with Bacteria and Mycorrhizal Fungi

Rezaei‐Chiyaneh

Battaglia

Sadeghpour

et al. 2021

Advanced Sustainable Systems

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This study evaluates the effects of intercropping patterns, plant growth‐promoting rhizobacteria and arbuscular mycorrhizal fungi (AMF) on seed yield and yield components of black cumin (Nigella sativa L.) and fenugreek (Trigonella foenum‐graecum L.), as well as the essential oil and fatty acid profile of black cumin. A two‐year two‐factorial field experiment was conducted in 2015 and 2016 to investigate intercropping of black cumin and fenugreek in five ratios and biofertilizer application as AMF and bacteria. Intercropping reveals higher concentrations of nitrogen and phosphorus compared with monocropping, whereas monocropping inoculated with bacteria shows the highest seed yield of both fenugreek (151 g m−2) and black cumin (148 g m−2). Regarding the quality of black cumin, the combination of a black cumin:fenugreek‐intercropping pattern of 66:34 with bacteria fertilization is most promising, as it shows i) the maximum essential oil content, oil yield, and fixed oil content, ii) the highest contents of thymol and p‐cymene, iii) the highest content of linoleic acid, and iv) the maximum land equivalent ratio. Conclusively, bacteria fertilization and black cumin:fenugreek‐intercropping pattern of 66:34 helps improving essential oil, fixed oil quality, and quantity of black cumin, thus creating a more sustainable cultivation system for black cumin and fenugreek.

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The role of glomalin in mitigation of multiple soil degradation problems

Cited by 46 publications

References 138 publications

A critical review of 25 years of glomalin research: a better mechanical understanding and robust quantification techniques are required

A critical review of 25 years of glomalin research: a better mechanical understanding and robust quantification techniques are required

Mycorrhizal Symbiosis for Better Adaptation of Trees to Abiotic Stress Caused by Climate Change in Temperate and Boreal Forests

Optimizing Intercropping Systems of Black Cumin (Nigella sativa L.) and Fenugreek (Trigonella foenum‐graecum L.) through Inoculation with Bacteria and Mycorrhizal Fungi

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