Glomalin - an interesting protein part of the soil organic matter

Vlček, Vítězslav; Pohanka, Miroslav

doi:10.17221/29/2019-swr

Cited by 42 publications

(18 citation statements)

References 58 publications

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“…That author's research found that the correlation coefficient (r) between easily extractable glomalin-related soil protein (EEGRSP) and SAS was 0.58 to 0.84. In turn, Wright et al [34] found that glomalin content in soil and SAS increased after switching from plough tillage to reduced tillage.…”

Section: Discussionmentioning

confidence: 99%

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A Strip-Till One-Pass System as a Component of Conservation Agriculture

et al. 2020

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Conservation agriculture has three main pillars, i.e., minimum tillage, permanent soil cover, and crop rotation. Covering the soil surface with plant residues and minimum mechanical soil disturbance can all result from introducing a strip-till one-pass (ST-OP) system. The aim of this study was to determine the impact of the ST-OP technology on the management of plant residues, soil properties, inputs, and emissions related to crop cultivation. We compared the effect of a ST-OP system against conventional tillage (CT) using a plough, and against reduced, non-ploughing tillage (RT). Four field experiments were conducted for evaluating the covering of soil with plant residues of the previous crop, soil loss on a slope exposed to surface soil runoff, soil structure and aggregate stability, occurrence of soil organisms and glomalin content, soil moisture and soil water reserve during plant sowing, labour and fuel inputs, and CO2 emissions. After sowing plants using ST-OP, 62.7–82.0% of plant residues remained on the soil surface, depending on the previous crop and row spacing. As compared with CT, the ST-OP system increased the stability of soil aggregates of 0.25–2.0 mm diameter by 12.7%, glomalin content by 0.08 g·kg−1, weight of earthworms five-fold, bacteria and fungi counts, and moisture content in the soil; meanwhile, it decreased soil loss by 2.57–6.36 t·ha−1 year−1, labour input by 114–152 min·ha−1, fuel consumption by 35.9–45.8 l·ha−1, and CO2 emissions by 98.7–125.9 kg·ha−1. Significant favourable changes, as compared with reduced tillage (RT), were also found with respect to the stability index of aggregates of 2.0–10.0 mm diameter, the number and weight of earthworms, as well as bacteria and fungi counts.

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Section: Discussionmentioning

confidence: 99%

“…AMF occur on the roots of 80% of vascular plants [33]. Many crops are dependent on AMF mycorrhiza, for example, corn, legumes, bean and potatoes, while others like wheat, oat, or barley just benefit from it without strong dependence [34]. Glomalin concentration in soils vary widely depending on land uses [35].…”

Section: Introductionmentioning

confidence: 99%

A Strip-Till One-Pass System as a Component of Conservation Agriculture

et al. 2020

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“…Adding cow dung and biochar with high carbon will increase nutrients and soil biological activity. Mycorrhizae are obligate biotrophs that depend on host cells for their C supply, up to 85% of the carbon is transferred to the mycorrhizae and then used to form glomalin (Vlček & Pohanka, 2020). Mycorrhizae will produce a protein, glomalin, which is called GRSP, and increase production of glomalin due to increasing atmospheric CO2 because of the symbiotic association that exists between plants and mycorrhizae (Singh et al, 2013).…”

Section: Treatmentmentioning

confidence: 99%

Mycorrhizae and a soil ameliorant on improving the characteristics of sandy soil

Herawati

Syamsiyah

Mujiyo

et al. 2021

Sains Tanah J. Soil Sci. Agroclimatology

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Agricultural constraints on sandy soil are poor chemical characteristics and low biological activity resulting in the soil becoming less productive to be planted. One of the efforts to improve the quality of sandy soil are application of mycorrhizae and a soil ameliorant. The purpose of this study was to determine the effect of mycorrhizae and a soil ameliorant on soil chemical characteristics and soil biological activity. The experiment was arranged using a Complete Randomized Design that had two factors. The first factor (1) was mycorrhizae dose, without mycorrhizae (M0) and six spores of mycorrhizae/plant (M1), and the second factor (2) was types of soil ameliorant, without ameliorant (S0), cow dung (S1), rock phosphate (S2), biochar (S3), cow dung–rock phosphate (S4), cow dung–biochar (S5), and rock phosphate–biochar (S6). The results indicated that combination of six spores mycorrhizae/plant–cow dung 60 tons ha−1–biochar 25 tons ha−1 (M1S5) increased soil organic carbon (SOC) (235%), available P (675%), cation exchange capacity (CEC) (216%), total glomalin (101%), and easily extracted glomalin (69%), decreased exchangeable sodium percentage (66%), and increased absolutely for root infection and spore density than without mycorrhizae and a soil ameliorant (control). The lowest of SOC in non-mycorrhizae and rock phosphate, available P, CEC, root infection, spore density were found on the control, but the lowest of total glomalin and easily extracted glomalin were found on non-mycorrhizae–rock phosphate. The application of mycorrhizae, cow dung, and biochar improved the sandy soil characteristics.

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“…(Hossain, 2021). This relationship is based on experiments with AMF colonized and non-colonized root samples, where glomalin was only detected in roots colonized by these fungi (Vlček & Pohanka, 2020).…”

Section: Occurrence and Distribution Of Arbuscular Mycorrhizal Fungi Speciesmentioning

confidence: 99%

Mycorrhizal Association in Wheat Genotypes Submitted to Variable Irrigation in the Brazilian Cerrado

Méndez¹,

Paula²,

Ramos³

et al. 2021

JAS

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Mycorrhizal association contributes to plant growth, influencing tolerance to abiotic stresses such as water deficit. There is considerable variation in infection by arbuscular mycorrhizal fungi (AMF) in cultivars of the same crop, but there is little information regarding these differences in wheat. The objective of this work was to evaluate the influence of water deficit on the arbuscular mycorrhizal association in wheat genotypes in the Cerrado region and the association between soil attributes and mycorrhizal colonization. The experiment was conducted in a no-till system, using different water regimes. The experimental design was a randomized block with subdivided plots scheme, with 12 treatments and 3 repetitions. The plots consisted of 4 wheat genotypes and the subplots included 3 water regimes. Mycorrhizal colonization, soil microbial biomass carbon, total soil organic carbon, easily extractable glomalin-related soil protein, spore number and AMF species diversity were evaluated. Mycorrhizal colonization was not influenced by wheat genotypes, but it was favored by the higher water regime, being 44.8% higher when compared to the lower water regime. The soil moisture was positively correlated with the soil attributes with the exception of the number of AMF spores. The community of AMF associated with wheat genotypes was similar, comprising of 12 species, predominantly Claroideoglomus etunicatum and Glomus macrocarpum. The low variation among wheat genotypes for AMF diversity suggests no selective influence of the plants on the AMF community in the area of the study. Water regime was shown to be a dominant factor in mycorrhizal association.

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Glomalin - an interesting protein part of the soil organic matter

Cited by 42 publications

References 58 publications

A Strip-Till One-Pass System as a Component of Conservation Agriculture

A Strip-Till One-Pass System as a Component of Conservation Agriculture

Mycorrhizae and a soil ameliorant on improving the characteristics of sandy soil

Mycorrhizal Association in Wheat Genotypes Submitted to Variable Irrigation in the Brazilian Cerrado

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