CEEPC/IPM/CMSC - Abstrakt prezentace

(CEEPC/IPM/CMSC 2022 - ThP-13)
Use of endophytic fungus in mitigating of cadmium toxicity

Veronika Berková 1 *, Miroslav Griga 2, Břetislav Brzobohatý 1, Martin Černý 1

  1. Department of Molecular Biology and Radiobiology, Faculty of AgriSciences, Mendel University in Brno
  2. Department of Industrial Crops, AGRITEC Plant Research Ltd., Šumperk

Abstrakt

Cadmium is a widespread toxic pollutant, a nonessential element without any known benefits for organisms. It has been estimated that human activity releases
approximately 13,000 tonnes of cadmium per year, and this pollutant may remain in the environment for up to 18 years. Unlike humans and animals, plants are sessile
organisms that cannot escape the stress and actively compete above and below ground for the habitat. Cadmium can be rapidly taken up by the roots, transported, and accumulated in the stems. For these reasons, the extensive presence of cadmium in the soil causes deterioration symptoms in the aboveground part of plants, including chlorosis, necrotic lesions, wilting, and leaf deformation. Endophytic microorganisms are low­cost and environmentally friendly technology to improve food production and reduce abiotic stress, including cadmium toxicity. These microbes show a mutualistic relationship with their host plants and colonize both the intercellular and intracellular plant compartments without significant morphological change. The endophytes can significantly promote plant growth and induce tolerance to both biotic and abiotic stressors. Furthermore, they have beneficial effects on the host plant by improving nutrient uptake and modulating the level of phytohormones, siderophores, and enzymes. Here, we employed flax and analyzed its response to the presence of endophytic fungus under different cadmium ion concentrations. We found that the presence of fungi mitigated cadmium toxicity and improved plant growth. Our
proteomics and metabolomics profiling provided the first molecular insights into this interaction and highlighted pathways underlying higher resilience in flax plants
cultivated in the presence of fungi.

* Korespondující autor: veronikamalych@gmail.com


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