首页|Inoculations of soil by antagonistic strains modify tuberosphere bacterial communities and suppress common scab of potatoes
Inoculations of soil by antagonistic strains modify tuberosphere bacterial communities and suppress common scab of potatoes
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NSTL
Elsevier
? 2022 Elsevier B.V.Common scab of potatoes is a soil-borne disease causing considerable economic losses worldwide. Although many management practices to control this disease have been introduced, the lack of efficiency increases an interest in effective and environmentally friendly alternatives. One of the attractive approaches to manage the disease is an application of antagonistic strains into soil. The aim of this study was to develop a selection approach for suitable biocontrol agents based on their in vitro properties and demonstrate their effect on soil microbial communities and host plant nutrition. Out of 56 isolates of Actinobacteria, three isolates and a mixture of six isolates with strong inhibitory activities against common scab pathogens and high growth rates were selected for the pot experiment to assess their biocontrol activity. The microbial community composition of the tuberosphere and the nutrient content in potato leaves was determined. One isolate significantly reduced the severity of the common scab. This isolate showed strong inhibitory activity against pathogens and reached the highest number of CFU/g of vermiculite. In the pot experiment, all the isolates affected the microbial community composition, yet the most substantial changes occurred in the treatment of the most efficient isolate. Moreover, it was determined that inoculation with isolates led to alterations in host plant nutrition suggesting plant-microbe interactions. We provided insights into relationships between antagonistic isolates, common scab pathogens, host plant and microbial communities, and their role in the disease control.
ActinobacteriaBiological controlCommon scab of potatoesMicrobial community
Hrychova S.、Sagova-Mareckova M.、Patrmanova T.、Krizkova I.、Rapoport D.、Kopecky J.
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Epidemiology and Ecology of Microorganisms Crop Research Institute
Department of Microbiology Nutrition and Dietetics Faculty of Agrobiology Food and Natural Resources Czech University of Sciences
NSTL
Elsevier
