Sewage sludge biochar alters root colonization of mycorrhizal fungi in a soil cultivated with corn

Figueiredo, Cícero Célio de; Farias, Walda Monteiro; Coser, Thais Rodrigues; Paula, Alessandra Monteiro de; Silva, Maria Regina Sartori da; Paz‐Ferreiro, Jorge

doi:10.1016/j.ejsobi.2019.103092

Cited by 36 publications

(14 citation statements)

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“…In addition to SS such as in our case, high ash applications also enhanced mycorrhizal status in barley compared to the control and triple superphosphate application [ 37 ]. Figueiredo et al [ 38 ] and Yusif et al [ 39 ] came to a similar finding when they used SS biochar, which increased the mycorrhizal colonization of corn roots in relation to the control [ 38 ] or enhanced root colonization in tomato genotypes [ 39 ]. Even, increasing the heavy metal content in the soil, which often occurs following SS application, may increase mycorrhizal colonization of the plant roots [ 40 , 41 ].…”

Section: Discussionmentioning

confidence: 70%

The impact of sewage sludge on the fungal communities in the rhizosphere and roots of barley and on barley yield

et al. 2021

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Current problems with sewage sludge (SS) disposal could be solved by application to agricultural land considering its fertilizer properties and ability to improve soil condition. However, SS may contain heavy metals as well as pathogenic microorganisms. In this study, molecular analysis of partial 18S rRNA gene was used to study the impact of SS application into the soil on the genetic diversity of fungal communities, especially arbuscular mycorrhizal fungi in the rhizosphere and roots of barley. These samples were collected on three dates from the control soil without SS and from the soil with the addition of SS at the concentrations of 5 and 15 t ha−1. Fungal alpha diversity in the rhizosphere of barley was affected by SS differently than in barley roots. In addition, principal component analysis and cluster analysis revealed that fungal communities were strongly influenced by the SS addition into the soil, sample type, and the sampling date. This approach was complemented by an evaluation of the basic parameters of barley production and the response of these parameters to the presence of SS in the soil. The plant height increased with increasing SS concentration and the thousand seed weight significantly increased at the concentration of 5 t ha−1 SS but significantly decreased in 15 t ha−1.

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Section: Discussionmentioning

confidence: 70%

The impact of sewage sludge on the fungal communities in the rhizosphere and roots of barley and on barley yield

et al. 2021

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“…Third, biochar‐amended soil might have a greater biological C sequestration. In the present study, we found that biochar combined with N fertilization significantly increased soil microbial biomass (Table S3), which might have been due to the increased root biomass and soil pH (Yu et al ., 2018; Figueiredo et al ., 2019). Biochar amendment could enhance the microbial C use efficiency by increasing the dominance of fungi with higher C utilization capacities (Six et al ., 2006; Liu et al ., 2020), leading to greater retention of microbial residues in soil that can be adsorbed to soil minerals and then form the main precursors of stable soil organic matter (Cotrufo et al ., 2013).…”

Section: Discussionmentioning

confidence: 99%

Quantitative assessment of the effects of biochar amendment on photosynthetic carbon assimilation and dynamics in a rice–soil system

Liu

et al. 2021

New Phytologist

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Biochar amendment has been proposed as a promising means to increase carbon (C) sequestration and simultaneously benefit plant productivity. However, quantifying the assimilation and dynamics of photosynthetic C in plant-soil systems under biochar addition remains elusive.This study established two experimental factors involving biochar addition and nitrogen (N) fertilization to quantitatively assess the effect of biochar on photosynthetic C fate in a rice plant-soil system. The rice plants and soil samples were collected and analyzed after 6-h pulse labeling with 13 CO 2 at the tillering, jointing, heading and ripening stages.Biochar did not affect the proportions of photoassimilated carbon-13 ( 13 C) allocations in plant-soil systems. Nevertheless, biochar enhanced the 13 C contents in the shoot, root, and soil pools, especially when combined with N fertilization, and biochar increased the cumulative assimilated 13 C contents in the shoot, root, and soil pools by 23%, 14% and 20%, respectively, throughout the whole growth stage. Moreover, biochar addition significantly enhanced the N use efficiency (NUE) by c. 23% at the heading and ripening stages.In summary, biochar increases the content of photoassimilated C in plant-soil systems by improving plant productivity via enhancing NUE, thus resulting in a higher soil C sequestration potential.

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“…Colour was set by heating in a microwave for 10–60s. The solution was discarded and roots were preserved in 1:1 water:glycerol solution at 20°C (Dalpe & Seguin, 2013). Any fungal structure (hyphae, arbuscules and vesicles) observed in the roots was considered to indicate root colonization, and this was expressed as the % of root surface occupied by arbuscular mycorrhizal fungi using the gridline intersection method (Giovannetti & Mosse, 1980) under a dissecting microscope with 60× magnification (ZEISS SteREO Discovery V8, Germany).…”

Section: Methodsmentioning

confidence: 99%

“…We detected no P deficiency in silage maize (Table 3). Similarly, mycorrhizal colonization of maize roots was unchanged, or increased, when 30-60 kg P ha −1 was applied to maize fields as triple superphosphate or organic fertilizers, such as compost or sewage sludge (Figueiredo et al, 2019;Liu et al, 2019;Peine et al, 2019;Singh et al, 2020). Furthermore, P fertilizer sources and application rates had no effect on the arbuscular mycorrhizal fungi community, biomass and ribotype richness in maize fields of Quebec (Beauregard et al, 2013).…”

Section: Root Colonization With Arbuscular Mycorrhizal Fungi Not Affe...mentioning

confidence: 99%

“…the V3-V4 stage, when plant switches from kernel reserves to photosynthesis to meet its energy requirements), with an average of 20%-30% of the root surface colonized in the vegetative growth stage and as much as 60%-70% of the root colonized by the reproductive growth stages (Alvarado-Herrejón et al, 2019;Hamel & Smith, 1991;Liu et al, 2019;Tian et al, 2011). Phosphorus fertilizer application has an inconsistent effect on the maize root-mycorrhizal symbiosis under field conditions, as some researchers report no change in root colonization by arbuscular mycorrhizal fungi in soils with small or large P fertilizer inputs Oliveira et al, 2009), while others find an increase in root colonization with greater soil test P levels (Figueiredo et al, 2019) or less root colonization with an increase in soil P fertility (Hagh et al, 2016). The majority view leads us to hypothesize that if we increase the P fertilizer input to maize agroecosystems, then there will be less arbuscular mycorrhizal fungi colonization of maize roots because greater plant-available P concentration in soil will inhibit the root-mycorrhizal symbiosis.…”

Section: Introductionmentioning

confidence: 99%

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Mycorrhizal colonization associated with roots of field‐grown maize does not decline with increasing plant‐available phosphorus

Sobat

Whalen

2022

Soil Use and Management

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Maize roots are colonized by arbuscular mycorrhizal fungi, but less mycorrhizal symbiosis is expected as the plant‐available phosphorus (P) concentration of soil increases, based on greenhouse and growth bench experiments. The objective of this study was to evaluate maize root colonization by arbuscular mycorrhizal fungi in a sandy loam soil with a gradient of plant‐available P concentrations resulting from P fertilizer inputs. The field experiment received inorganic and organic P fertilizers for 3 years, and this created a 20‐fold difference in the plant‐available P concentration, from 12 to 204 mg Mehlich‐3 extractable P kg−1. The proportion of maize roots colonized with arbuscular mycorrhizal fungi increased from 26 ± 2% during vegetative growth (V8 and VT growth stages) to 46 ± 2% in the reproductive R2 and R6 stages. The P fertilizer input did not affect maize root colonization by arbuscular mycorrhizal fungi. More arbuscular mycorrhizal fungi colonization of maize roots occurred in soil with increasing plant‐available P concentrations (r = .12, p = .05, n = 237), and this was associated with greater P uptake in the maize shoots (r = .53, p < .001, n = 240). We conclude that the root‐mycorrhizal symbiosis was more strongly related to maize growth than the plant‐available P concentration under field conditions.

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Sewage sludge biochar alters root colonization of mycorrhizal fungi in a soil cultivated with corn

Cited by 36 publications

References 50 publications

The impact of sewage sludge on the fungal communities in the rhizosphere and roots of barley and on barley yield

The impact of sewage sludge on the fungal communities in the rhizosphere and roots of barley and on barley yield

Quantitative assessment of the effects of biochar amendment on photosynthetic carbon assimilation and dynamics in a rice–soil system

Mycorrhizal colonization associated with roots of field‐grown maize does not decline with increasing plant‐available phosphorus

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