Interactions between <i>Brassica</i> Biofumigants and Soil Microbiota: Causes and Impacts

Tagele, Setu Bazie; Kim, Ryeong-Hui; Shin, Jae‐Ho

doi:10.1021/acs.jafc.1c03776

Cited by 15 publications

(15 citation statements)

References 149 publications

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“…In a prior study, the soil OM of mustard-eggplant treatment was 2.65 times greater than that of continually planted eggplant treatment [47]. OM was also increased after the AITC treatment in our study; TN and soil available potassium were also signi cantly improved, possibly because AITC fumigation treatment promotes population and soil-aggregate restoration [30].…”

Section: Discussionsupporting

confidence: 57%

Effects of allyl isothiocyanate fumigation on medicinal plant root knot disease control, plant survival, and the soil bacterial community

Yan

et al. 2023

Preprint

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Background Allyl isothiocyanate (AITC) is a natural product with high volatility that is used as a biofumigant to alleviate soil-borne plant diseases, and problems such as root knot nematodes (RKNs) that necessitate continuous cropping. However, little research has assessed the effects of AITC fumigation on medicinal plant. Results The current results indicated that AITC significantly reduced the population of RKNs in soil (p < 0.0001) and showed an excellent RKN disease control effect within 6 months after sowing Panax notoginseng (p < 0.0001). The seedling survival rate of 2-year-old P. notoginseng was approximately 1.7-fold higher after soil treatment with AITC (p = 0.1008). 16S rRNA sequencing indicated that the AITC treatment affected bacterial richness rather than diversity in the CC soil. Furthermore, biomarkers with statistical differences between AITC-treated and untreated CC soil showed that Pirellulales (o), Pirellulaceae (f), Pseudomonadaceae (f), and Pseudomonas (g) played important roles in the AITC-treated group. In addition, the microbiome functional phenotypes predicted using the BugBase tool suggested that AITC treatment is more conducive to improving CC soil through changes in the bacterial community structure. Crucially, our research confirmed that AITC soil treatment significantly increases soil organic matter (p = 0.0055), total nitrogen (p = 0.0054), and available potassium (p = 0.0373), which promotes the succeeding medicinal plant (Polygonatum kingianum) survival. Conclusion AITC as an ecologically friendly soil treatment method, which does not affect soil microbial diversity, but rather relative abundance. Also, it could be providing a basis for a useful agricultural soil management measure to alleviate soil sickness.

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Section: Discussionsupporting

confidence: 57%

Effects of allyl isothiocyanate fumigation on medicinal plant root knot disease control, plant survival, and the soil bacterial community

Yan

et al. 2023

Preprint

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“…Soil microbes are essential for nutrient cycling, soil fertility, crop protection, and productivity [41]. Biofumigation reshapes the soil microbiota [10,13] via introduction or activation of beneficial microbes [12,42,43]. Our findings reveal that the 1% biofumigant at 4 weeks of fumigation had no negative impact on the bacterial and fungal diversities, while improving the intra-and inter-kingdom network complexity of the soil.…”

Section: Soil Microbial Dynamics After Biofumigation Is Concentration...mentioning

confidence: 74%

An optimized biofumigant improves pepper yield without exerting detrimental effects on soil microbial diversity

Tagele

Kim

Jeong

et al. 2022

Chem. Biol. Technol. Agric.

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Background Biofumigation is a non-chemical sustainable approach that reshapes soil microbiota to overcome challenges in way of continuous cultivation. However, the type and quantity of substrate have a significant impact on microbiota shifts and the subsequent success of biofumigation. Moreover, studies on the effects of biofumigant concentration in combination with fumigation duration on soil microbiota dynamics are very rare. Research methods We performed microcosm experiments to investigate how a biofumigant (Korean canola cultivar, HanRa) at various concentrations (0.5%, 1%, 2–4% w/w: biofumigant/soil) and fumigation periods (2–4 weeks) affects the soil bacterial and fungal communities. Subsequently, pot experiments employing two Korean canola cultivars (HanRa and YongSan) at 1% (w/w) were carried out. Results Illumina MiSeq analysis revealed that 2–4% biofumigant, regardless of incubation period, had a significant negative impact on microbial diversity and network complexity. In contrast, 1% biofumigant transformed the bacterial, fungal, and inter-kingdom networks into a highly connected and complex network without affecting microbial diversity. Bacillus, Clostridium, and Pseudomonas were the most highly stimulated bacterial genera in the biofumigated soils, whereas the abundance of Acidobacteria members was greatly reduced. The 2–4% amendments had substantially and more differentially abundant Fusarium than the 1%. Soil nutrition (e.g., pH, nitrate, ammonium, and exchangeable potassium), fruit yield, and weed suppression were enhanced in subsequent pot experiments. Of the nine soil chemical properties, phosphate and exchangeable potassium were the main factors influencing the microbial community assembly. Conclusions Optimized biofumigation-mediated increase in nitrate, ammonium, and potassium availability in the soil without causing any negative effects on soil microbial diversity indicates its potential as a preplant to improve crop productivity. This study contributes significantly to our understanding of how an optimal biofumigant can help ameliorate obstacles in continuous cropping. Graphical Abstract

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“…Chaetomium is a beneficial fungus for controlling soil-borne diseases, including ginseng diseases ( Grunewaldt-Stöcker and von Alten, 2003 ; Zhou et al., 2019 ; Li et al., 2020 ), and it also increases crop tolerance to abiotic stresses ( Liu et al., 2021b ). In canola treatment, the decline in the abundance of Gemmatimonadota, Armatimonadota, Desulfobacterota, Myxococcota, and Planctometota could be attributed to their sensitivity to ITCs released from soil biofumigants ( Tagele et al., 2021 ).…”

Section: Discussionmentioning

confidence: 99%

Soil amendment with cow dung modifies the soil nutrition and microbiota to reduce the ginseng replanting problem

et al. 2023

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Ginseng is a profitable crop worldwide; however, the ginseng replanting problem (GRP) is a major threat to its production. Soil amendment is a non-chemical method that is gaining popularity for alleviating continuous cropping obstacles, such as GRP. However, the impact of soil amendment with either cow dung or canola on GRP reduction and the associated soil microbiota remains unclear. In the present study, we evaluated the effect of soil amendment with cow dung, canola seed powder, and without amendment (control), on the survival of ginseng seedling transplants, the soil bacterial and fungal communities, and their associated metabolic functions. The results showed that cow dung increased ginseng seedling survival rate by 100 percent and had a remarkable positive effect on ginseng plant growth compared to control, whereas canola did not. Cow dung improved soil nutritional status in terms of pH, electrical conductivity, NO3−, total carbon, total phosphorus, and available phosphorus. The amplicon sequencing results using Illumina MiSeq showed that canola had the strongest negative effect in reducing soil bacterial and fungal diversity. On the other hand, cow dung stimulated beneficial soil microbes, including Bacillus, Rhodanobacter, Streptomyces, and Chaetomium, while suppressing Acidobacteriota. Community-level physiological profiling analysis using Biolog Ecoplates containing 31 different carbon sources showed that cow dung soil had a different metabolic activity with higher utilization rates of carbohydrates and polymer carbon sources, mainly Tween 40 and beta-methyl-d-glucoside. These carbon sources were most highly associated with Bacillota. Furthermore, predicted ecological function analyses of bacterial and fungal communities showed that cow dung had a higher predicted function of fermentation and fewer functions related to plant pathogens and fungal parasites, signifying its potential to enhance soil suppressiveness. Co-occurrence network analysis based on random matrix theory (RMT) revealed that cow dung transformed the soil microbial network into a highly connected and complex network. This study is the first to report the alleviation of GRP using cow dung as a soil amendment, and the study contributes significantly to our understanding of how the soil microbiota and metabolic alterations via cow dung can aid in GRP alleviation.

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Interactions between Brassica Biofumigants and Soil Microbiota: Causes and Impacts

Cited by 15 publications

References 149 publications

Effects of allyl isothiocyanate fumigation on medicinal plant root knot disease control, plant survival, and the soil bacterial community

Effects of allyl isothiocyanate fumigation on medicinal plant root knot disease control, plant survival, and the soil bacterial community

An optimized biofumigant improves pepper yield without exerting detrimental effects on soil microbial diversity

Soil amendment with cow dung modifies the soil nutrition and microbiota to reduce the ginseng replanting problem

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