Detrital subsidy alters the soil invertebrate community and reduces infection of winter wheat seedlings by Fusarium wilt

Goncharov, Anton A.; Glebova, A.A.; Чернов, Т. И.; Karpukhin, M. M.; Kuznetsova, Natalia A.; Leonov, Vladislav D.; Макарова, О. Л.; Maygurova, Valentina N.; Шестеперов, А. А.; Taranets, Irina P.; Тхакахова, А. К.; Turbanova, A. A.; Tiunov, Alexei V.

doi:10.1016/j.apsoil.2021.103914

Cited by 12 publications

(9 citation statements)

References 30 publications

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“…In contrast to larger invertebrates, the mesofauna members, especially Prostigmata mites and Collembola, demonstrated a significant increase in abundance in all mulch treatments (Table 2, Figure 3i,j). This observation is in agreement with the previous results [35]. The trophic preferences of Prostigmata mites are diverse, however, in agroecosystems, most Prostigmata are mycophages and saprophages [63][64][65].…”

Section: Effect Of Mulching On Soil Food Webssupporting

confidence: 92%

“…Before statistical analyses, the data on the abundance of soil fauna and Fusarium biomass estimated at each of the four sampling events were recalculated as integral mean values of abundance (IM) [35]. IM is numerically equal to the integrated taxon abundance throughout the experiment and in the physical sense represents the amount of "work" that was performed by the group.…”

Section: Discussionmentioning

confidence: 99%

“…Surface residues, usually in the form of plant litter, strongly influence the detrital food webs [32]. Mulches were usually observed to stimulate the soil microorganisms [33,34], microfauna [35,36], earthworms [37], predatory herpetobionts [23], and arthropod populations [38]. Amount and C:N ratio of organic amendments regulate soil N availability [39].…”

Section: Introductionmentioning

confidence: 99%

“…Amount and C:N ratio of organic amendments regulate soil N availability [39]. Under laboratory conditions, different types of mulch significantly reduced the incidence of Fusarium wilt in banana plants [40] and wheat seedlings [35]. However, the current understanding of the effects of soil environmental changes induced by different amounts of crop residue mulch on regulating detrital wood webs and FHB remains poor [36].…”

Section: Introductionmentioning

confidence: 99%

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Influence of Structure of Detrital Food Webs on Fusarium Head Blight of Winter Wheat

et al. 2022

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Conventional methods for Fusarium head blight (FHB) control are ineffective. A better understanding of the mechanisms linking the abundance of Fusarium species in soil before winter wheat flowering and mycotoxin content in mature grain may help to improve the effectiveness of methods for FHB control. In this study, we established a field experiment aimed to trace the impact of three types of organic mulch with different C:N ratios on the structure of detrital food webs and the manifestation of winter wheat FHB. T2-toxin content in grain was significantly higher in N-poor treatment (52.1 ± 0.2 µg g−1) compared to N-rich treatment (40.4 ± 1.6 µg g−1). The structure of detrital food webs in the studied treatments changed significantly after mulch addition; the abundance of soil saprophages and mycophages increased up to 50%. Based on the results of mixed-effects modeling, the abundance of herpetobionts and soil mesofauna were positively associated with an increase in Fusarium biomass in grain. The increase in the content of T2-toxin in the grain was associated with an increase in the abundance of earthworms and phytophagous macrofauna in the soil. Results suggest the existence of a previously undescribed mechanism for FHB infection by transfer of pathogenic spores by soil invertebrates, while the content of mycotoxins in grain can be triggered by the grazing activity of soil phytophagous invertebrates.

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Section: Effect Of Mulching On Soil Food Webssupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of Structure of Detrital Food Webs on Fusarium Head Blight of Winter Wheat

et al. 2022

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“…3), which may be explained by large variation in management within each of these habitat types. Some springtail species effectively survive in agricultural fields 33 , where they are involved in nutrient cycling and serve as biocontrol agents by grazing on pathogenic fungi 42 and supporting arthropod predators 43 . Springtails are also commonly found in urban areas 32 .…”

Section: Global Distribution and Its Driversmentioning

confidence: 99%

Globally invariant metabolism but density-diversity mismatch in springtails

Potapov

Guerra

Hoogen

et al. 2022

Preprint

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Soil life supports the functioning and biodiversity of terrestrial ecosystems1,2. Springtails (Collembola) are among the most abundant soil animals regulating soil fertility and flow of energy through above- and belowground food webs3-5. However, the global distribution of springtail diversity and density, and how these relate to energy fluxes remains unknown. Here, using a global dataset collected from 2,470 sites, we estimate total soil springtail biomass at 29 Mt carbon (threefold higher than wild terrestrial vertebrates6) and record peak densities up to 2 million individuals per m2 in the Arctic. Despite a 20-fold biomass difference between tundra and the tropics, springtail energy use (community metabolism) remains similar across the latitudinal gradient, owing to the increase in temperature. Neither springtail density nor community metabolism were predicted by local species richness, which was highest in the tropics, but comparably high in some temperate forests and even tundra. Changes in springtail activity may emerge from latitudinal gradients in temperature, predation7,8, and resource limitation7,9,10 in soil communities. Contrasting temperature responses of biomass, diversity and activity of springtail communities suggest that climate warming will alter fundamental soil biodiversity metrics in different directions, potentially restructuring terrestrial food webs and affecting major soil functions.

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A stepwise multiple regression model to predict Fusarium wilt in lentil

Ali

Qin

Aatif

et al. 2022

Meteorological Applications

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The present study was designed to develop a disease predictive model based upon meteorological variables, that is, minimum and maximum temperatures, rainfall, and relative humidity to predict lentil wilt severity. Correlation and regression analyses were performed to determine the relationship of meteorological variables with disease severity. A significant correlation was found between all meteorological variables and lentil wilt severity. Maximum temperature showed negative correlation, while minimum temperature, rainfall, and relative humidity exhibited positive correlation with lentil wilt severity. Environmental variables and disease severity data of 2 years (2017-2018) were used to develop a disease predictive model using a stepwise multiple regression analysis. Maximum and minimum temperatures, rainfall, and relative humidity significantly contributed to disease development and explained 94.39% variability in disease severity. This model, based on 2 years data, was then validated with 5 years (2012-2016) meteorological variables and disease severity data set. Homogeneity of regression line in the multiple regression equations of 2 years (2017-2018) model and 5 years (2012-2016) model indicated that they validated each other. Lentil wilt severity was high at maximum (17-25 C) and minimum temperature (9.5-15.1 C), rainfall (4.5-6.5 mm), and relative humidity (55%-85%), respectively. The lentil wilt disease predictive model developed for four lentil varieties, namely M-85, NL-2, Mansehra-89, and NARC-08-1, during the present investigation will be useful to predict

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Detrital subsidy alters the soil invertebrate community and reduces infection of winter wheat seedlings by Fusarium wilt

Cited by 12 publications

References 30 publications

Influence of Structure of Detrital Food Webs on Fusarium Head Blight of Winter Wheat

Influence of Structure of Detrital Food Webs on Fusarium Head Blight of Winter Wheat

Globally invariant metabolism but density-diversity mismatch in springtails

A stepwise multiple regression model to predict Fusarium wilt in lentil

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