Organic fertilization shapes the biodiversity of fungal communities associated with potato dry rot

Gleń-Karolczyk, K.; Boligłowa, E.; Antonkiewicz, Jacek

doi:10.1016/j.apsoil.2018.04.012

Cited by 21 publications

(13 citation statements)

References 30 publications

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“…The increased frequency of E. nigrum determinations was associated with the reduction of G. irregulare population, which was particularly well marked in the object without the use of seed treatments (Table 3). In the preceding study, saprophytic fungi-E. nigrum, C. cladosporioides, Penicillium spp., Mucor, and antagonistic Trichoderma and Gliocladiumrestricted the infection of potato tubers by a pathogenic fungi complex [44]. Furthermore, in the present study, independently of seed treatment, the elevated total share of saprophytes and antagonists was reflected by the improved health of broad bean seedlings.…”

Section: Biodiversity and Trophic Structure Of Microbial Populations Isolated From Pre-emergence-infested Broad Bean Seedlingssupporting

confidence: 56%

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Effect of Seed Dressing and Soil Chemical Properties on Communities of Microorganisms Associated with Pre-Emergence Damping-Off of Broad Bean Seedlings

et al. 2021

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Combating soil pathogens that disable plant emergence is among the most difficult challenges of global agriculture. Legumes, preferred in sustainable cultivation systems, are particularly sensitive to pre-emergence damping-off of seedlings. Seed dressing is therefore a very important element in the cultivation technology. The aim of this study was to compare the impact of biological (Pythium oligandrum) and chemical (carboxin + thiuram) seed dressing on the quantitative and qualitative composition of microorganisms participating in the epidemiology of this disease, under specific hydrothermal conditions and chemical properties of the soil (pH, humus, macro-, and micronutrient). Microorganism identification was done using the MALDI-TOF MS (Matrix Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry) technique. Species were assigned to frequency groups, and populations of pathogens, saprophytes, and antagonists were identified. The biodiversity of these communities was expressed with Simpson’s Reciprocal, Shannon–Wiener, and Evenness (Shannon) indices. In individual variants of seed pre-treatment, the correlations between individual edaphic factors and the suppression of pre-emergence damping-off, the number of isolates obtained from infected seedlings, and the share of individual trophic groups of fungi were assessed. The main causes of pre-emergence damping-off of broad bean seedlings are Ilyonectria destructans, Globisporangium irregulare, Fusarium equiseti, Rhizoctonia solani, and Fusarium solani. Eliminating seed treatment results in a seedling mortality rate of 33.5%–42.5%. The effectiveness of the chemical protection product is 44.2% and 25.9%. Carboxin and thiuram reduce the diversity of microorganisms involved in the pathogenesis of pre-emergence damping-off and limit the presence of antagonistic fungi. Under the influence of P. oligandrum, there was a five-fold increase in the population of antagonists. An increase in humus in the soil reduces the percentage of diseased broad bean seedlings.

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Section: Biodiversity and Trophic Structure Of Microbial Populations Isolated From Pre-emergence-infested Broad Bean Seedlingssupporting

confidence: 56%

“…Organic fertilization plays a key role in stimulating soil biological activity and creating ecosystem balance [42][43][44][45]. The relative balance in the soil between groups of parasitic, saprophytic, and antagonistic microorganisms ensures better plant health.…”

Section: Introductionmentioning

confidence: 99%

Effect of Seed Dressing and Soil Chemical Properties on Communities of Microorganisms Associated with Pre-Emergence Damping-Off of Broad Bean Seedlings

et al. 2021

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“…factors -surface treatment of fallow arable landand introduction of manure contributed to reducing the spread of wheat root rot by 24.4% and increased its yield by 14.0%. Other scientists have noted the positive effect of organic fertilizer in reducing the risk of disease as well [23,24], pointing out that the balanced supply of nutrients to plants correlates with the inhibitive biological effect on the root rot pathogen [25].…”

Section: Resultsmentioning

confidence: 99%

Agrotechnical methods ofreducing root rot for cultivating spring wheat in organic farming

Razina¹

2020

E3S Web Conf.

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Energy-saving technologies of wheat cultivation limit the buffer role of the agrotechnical method in reducing the spread of root rot. This situation calls for using increased volumes of pesticides in order to decrease harvest losses arising from actions of harmful organisms, which does not allow to produce organic food.Considering this, evaluation of the efficiency of agrotechnical methods of cultivating spring wheat aimed at enhancing phytosanitary conditions of crops is very important. The goal of our work was to evaluate the role of predecessors, methods of soil preparation,organic fertilizers, new varieties of spring wheat, and the timing of planting in limiting the spread and reducing the harmfulness of root rot. Our study has been conducted in the forest-steppe zone of Eastern Siberia. We have established that green manure in crop rotationandfallow arable land with introduction of 30 t/ha of organic manure fertilizer with a disc harrow to a depth of 10–12 cmreduce the spread and severity of root rot and increase wheat yields. In the plantings of the new variety of spring wheat Marsianka, the spread of the disease was reliably less,and the yield was higher compared to the control variety Tulunskaya 11. The optimal planting date for the average of two years was May 25, the crops planted then compared to those planted on May 30 were 9.4% less affected by the disease and gave a reliable increase in the harvest of 0.15 tons/ha. Our studies have shown that during production of organic wheat we can limit the spread andharmfulness of root rot withagrotechnical methods.

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“…Rhizosphere microbial diversity can improve a plant’s resistance to soil-borne disease [23]. Previous studies have shown that continuous cropping can decrease the structural and functional diversity of the soil microbiome [53, 54]. In agricultural production, soil quality degradation and aggravated plant diseases were the main reason that caused crop yield reduction in continuous cropped soil [55–57].…”

Section: Discussionmentioning

confidence: 99%

Characterization and variation of the rhizosphere fungal community structure of cultivated tetraploid cotton

Qiao

Zhang

et al. 2019

PLoS ONE

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Rhizosphere fungal communities exert important influencing forces on plant growth and health. However, information on the dynamics of the rhizosphere fungal community structure of the worldwide economic crop cotton (Gossypium spp.) is limited. In the present study, next-generation sequencing of nuclear ribosomal internal transcribed spacer-1 (ITS1) was performed to characterize the rhizosphere fungal communities of G. hirsutum cv. TM-1 (upland cotton) and G. barbadense cv. Hai 7124 (island cotton). The plants were grown in field soil (FS) that had been continuously cropped with cotton and nutrient-rich soil (NS) that had not been cropped. The fungal species richness, diversity, and community composition were analyzed and compared among the soil resources, cotton genotypes, and developmental stages. We found that the fungal community structures were different between the rhizosphere and bulk soil and the difference were significantly varied between FS and NS. Our results suggested that cotton rhizosphere fungal community structure variation may have been primarily influenced by the interaction of cotton roots with different soil resources. We also found that the community composition of the cotton rhizosphere fungi varied significantly during different developmental stages. In addition, we observed fungi that was enriched or depleted at certain developmental stages and genotypes in FS and NS, and these insights can lay a foundation for deep research into the dynamics of pathogenic fungi and nutrient absorption of cotton roots. This research illustrates the characteristics of the cotton rhizosphere fungal communities and provides important information for understanding the potential influences of rhizosphere fungal communities on cotton growth and health.

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Organic fertilization shapes the biodiversity of fungal communities associated with potato dry rot

Cited by 21 publications

References 30 publications

Effect of Seed Dressing and Soil Chemical Properties on Communities of Microorganisms Associated with Pre-Emergence Damping-Off of Broad Bean Seedlings

Effect of Seed Dressing and Soil Chemical Properties on Communities of Microorganisms Associated with Pre-Emergence Damping-Off of Broad Bean Seedlings

Agrotechnical methods ofreducing root rot for cultivating spring wheat in organic farming

Characterization and variation of the rhizosphere fungal community structure of cultivated tetraploid cotton

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